CN109739892B - Method and system for carrying out hierarchical expansion on data acquisition requests in Internet - Google Patents

Method and system for carrying out hierarchical expansion on data acquisition requests in Internet Download PDF

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Publication number
CN109739892B
CN109739892B CN201811614715.0A CN201811614715A CN109739892B CN 109739892 B CN109739892 B CN 109739892B CN 201811614715 A CN201811614715 A CN 201811614715A CN 109739892 B CN109739892 B CN 109739892B
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mobile terminal
network connection
attribute
data
level
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CN109739892A (en
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不公告发明人
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Shenzhen Qianhai net new technology Co.,Ltd.
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Shenzhen Qianhai Net New Technology Co ltd
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Priority to CN202110027516.5A priority Critical patent/CN112800096A/en
Priority to CN201811614715.0A priority patent/CN109739892B/en
Priority to CN202110027505.7A priority patent/CN112732769A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/24—Querying
    • G06F16/245—Query processing
    • G06F16/2457—Query processing with adaptation to user needs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/60—Protecting data
    • G06F21/62—Protecting access to data via a platform, e.g. using keys or access control rules
    • G06F21/6218—Protecting access to data via a platform, e.g. using keys or access control rules to a system of files or objects, e.g. local or distributed file system or database

Abstract

The invention discloses a method and a system for carrying out hierarchical expansion on data acquisition requests in the Internet, wherein the method comprises the following steps: the mobile terminal sends a network connection request, a network address of the mobile terminal and an identifier of the mobile terminal to an authentication server in the Internet; the authentication server sends a random character string and a first hash value to a content server in the Internet; the content server generates a second hash value, and when the second hash value is equal to the first hash value, the metadata set is sent to the mobile terminal; the authentication server sends the first attribute and the second attribute of the network connection request of the mobile terminal to a content server; the content server retrieves to obtain a plurality of data files according to the first attribute and the second attribute of the network connection request.

Description

Method and system for carrying out hierarchical expansion on data acquisition requests in Internet
Technical Field
The present invention relates to the field of internet, and more particularly, to a method and system for performing hierarchical expansion on data acquisition requests in the internet.
Background
Currently, a content server in the internet is used to store a plurality of data files in the internet and provide a mobile terminal or a user of a legitimate user in the internet with access to a specific data file. As more and more users are on the internet, different users will typically have different needs and may require the internet to provide different services. However, there is no scheme for performing hierarchical processing on the access request of the user according to the user level or the authentication level of the user in the prior art.
Disclosure of Invention
According to an aspect of the present invention, there is provided a method for performing hierarchical expansion on a data acquisition request in the internet, the method comprising:
the mobile terminal sends a network connection request, a network address of the mobile terminal and an identifier of the mobile terminal to an authentication server in the internet, wherein the network connection request comprises: authentication data and network connection duration;
when an authentication server receives a network connection request, a network address of a mobile terminal and an identifier of the mobile terminal from the mobile terminal, and in the case that authentication data in the network connection request is not verified, generating a random string based on the identifier of the mobile terminal and a first combined string based on the random string and the network address of the mobile terminal, performing hash calculation on the first combined string using a first hash function to generate a first hash value, the authentication server transmitting a first response message indicating that the network connection request, the network address of the mobile terminal and the identifier of the mobile terminal have been received to the mobile terminal, and the authentication server transmitting the random string and the first hash value to a content server within the internet; the first response message further includes a network address of the content server;
in response to receiving the first response message, the mobile terminal transmitting a data acquisition request and a network address of the mobile terminal to a content server, the content server generating a second combined character string based on the random character string received from the authentication server and the network address of the mobile terminal received from the mobile terminal, hash-calculating the second combined character string using a second hash function to generate a second hash value, the content server searching according to a search condition in the data acquisition request transmitted from the mobile terminal to determine all data files associated with the search condition when the second hash value is equal to the first hash value without receiving a verification result associated with the mobile terminal from the authentication server, and composing metadata of each of the all data files associated with the search condition into a set, transmitting the set of metadata to the mobile terminal without transmitting any of all data files associated with a retrieval condition to the mobile terminal;
the mobile terminal receives the metadata set, stores the metadata set in a first storage, analyzes the metadata set to determine metadata of each data file, determines the storage size of each data file according to the metadata of each data file, determines the total storage size of all the data files related to the retrieval condition according to the storage size of each data file, and determines a reserved storage space in a second storage according to the total storage size and an expansion coefficient; when the mobile terminal determines that the residual storage space in the second storage is larger than the reserved storage space, sending a second response message for indicating that the storage space of the mobile terminal is available to the authentication server;
when an authentication server sends the random character string and the first hash value to a content server in the Internet, the authentication server acquires authentication data and network connection duration in the network connection request, analyzes the authentication data to determine whether the authentication data comprises fingerprint information input by a user of the mobile terminal, acquires fingerprint information pre-stored by the user of the mobile terminal from an authentication database in the authentication server according to an identifier of the mobile terminal under the condition that the authentication data comprises the fingerprint information input by the user, and sets a first attribute of the network connection request of the mobile terminal to be a private level when the fingerprint information input by the user is the same as the fingerprint information pre-stored by the user; when the authentication data does not comprise fingerprint information input by a user or the fingerprint information input by the user is different from fingerprint information stored in advance by the user, setting a first attribute of a network connection request of the mobile terminal to be a public level;
the authentication server acquires video information and audio information in the authentication data, determines the time synchronization degree of the video information and the audio information, and determines the resolution of the video information when the time synchronization degree of the video information and the audio information is greater than a synchronization threshold;
setting a second attribute of the network connection request of the mobile terminal to a high expansion level when the resolution of the video information is greater than a high resolution threshold, setting the second attribute of the network connection request of the mobile terminal to a medium expansion level when the resolution of the video information is less than or equal to the high resolution threshold and greater than a low resolution threshold, and setting the second attribute of the network connection request of the mobile terminal to a low expansion level when the resolution of the video information is less than or equal to the low resolution threshold;
the authentication server sends the first attribute and the second attribute of the network connection request of the mobile terminal to a content server;
the content server acquires a first attribute of a network connection request of the mobile terminal, establishes network connection between the mobile terminal and a public content library in the content server when the first attribute is a network connection request of a public level, and establishes network connection between the mobile terminal and a private content library in the content server when the first attribute is a network connection request of a private level;
the content server acquires a second attribute of a network connection request of the mobile terminal, when the second attribute is at a high expansion level, the second attribute performs high-level expansion on a retrieval condition in the data acquisition request, and increases the network connection duration by a first time length, so that the mobile terminal can perform data retrieval by using the retrieval condition subjected to high-level expansion within the network connection duration increased by the first time length through the established network connection to acquire a plurality of data files;
when the second attribute is a medium expansion level, performing medium level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a second time length, so that the mobile terminal can perform data retrieval by using the retrieval condition subjected to the medium level expansion within the network connection duration increased by the second time length through the established network connection to acquire a plurality of data files;
and when the second attribute is at a low expansion level, performing low-level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a third time length, so that the mobile terminal can perform data retrieval by using the retrieval condition subjected to low-level expansion within the network connection duration increased by the third time length through the established network connection to acquire a plurality of data files.
The network address of the mobile terminal is an IPv4 address or an IPv6 address; the identifier of the mobile terminal is capable of uniquely identifying the mobile terminal within the internet.
Generating the random string based on the identifier of the mobile terminal includes: randomly transforming the position of each character included in the identifier of the mobile terminal to generate a random string
The content server generating a second combined character string based on the random character string received from the authentication server and the network address of the mobile terminal received from the mobile terminal includes:
the content server character-connects the random character string received from the authentication server with the network address of the mobile terminal received from the mobile terminal to generate a second combined character string
The first memory is a volatile memory and the second memory is a non-volatile memory;
according to another aspect of the present invention, there is provided a system for hierarchically expanding data acquisition requests in the internet, the system comprising:
a mobile terminal for transmitting a network connection request, a network address of the mobile terminal and an identifier of the mobile terminal to an authentication server in the internet, the network connection request including: authentication data and network connection duration; in response to receiving the first response message, the mobile terminal sends a data acquisition request and a network address of the mobile terminal to the content server;
an authentication server that, upon receiving a network connection request, a network address of a mobile terminal, and an identifier of the mobile terminal from the mobile terminal, generates a random string based on the identifier of the mobile terminal and a first combined string based on the random string and the network address of the mobile terminal without verifying authentication data in the network connection request, performs hash calculation using a first hash function on the first combined string to generate a first hash value, transmits a first response message indicating that the network connection request, the network address of the mobile terminal, and the identifier of the mobile terminal have been received to the mobile terminal, and transmits the random string and the first hash value to a content server within the internet; the first response message further includes a network address of the content server;
a content server generating a second combined character string based on the random character string received from the authentication server and the network address of the mobile terminal received from the mobile terminal, performing a hash calculation on the second combined string using a second hash function to generate a second hash value, when the second hash value is equal to the first hash value, the content server, without receiving a verification result associated with the mobile terminal from an authentication server, searching according to the searching condition in the data acquisition request sent by the mobile terminal to determine all data files associated with the searching condition, the metadata of each data file in all the data files associated with the retrieval condition form a metadata set, and the metadata set is sent to the mobile terminal without sending any data file in all the data files associated with the retrieval condition to the mobile terminal;
the mobile terminal receives the metadata set, stores the metadata set in a first memory, analyzes the metadata set to determine metadata of each data file, determines the storage size of each data file according to the metadata of each data file, determines the total storage size of all data files associated with the retrieval condition according to the storage size of each data file, and determines a reserved storage space in a second memory according to the total storage size and an expansion coefficient; when the mobile terminal determines that the residual storage space in the second storage is larger than the reserved storage space, sending a second response message for indicating that the storage space of the mobile terminal is available to the authentication server;
when an authentication server sends the random character string and the first hash value to a content server in the Internet, the authentication server acquires authentication data and network connection duration in the network connection request, analyzes the authentication data to determine whether the authentication data comprises fingerprint information input by a user of the mobile terminal, acquires fingerprint information pre-stored by the user of the mobile terminal from an authentication database in the authentication server according to an identifier of the mobile terminal under the condition that the authentication data comprises the fingerprint information input by the user, and sets a first attribute of the network connection request of the mobile terminal to be a private level when the fingerprint information input by the user is the same as the fingerprint information pre-stored by the user; when the authentication data does not comprise fingerprint information input by a user or the fingerprint information input by the user is different from fingerprint information stored in advance by the user, setting a first attribute of a network connection request of the mobile terminal to be a public level;
the authentication server acquires video information and audio information in the authentication data, determines the time synchronization degree of the video information and the audio information, and determines the resolution of the video information when the time synchronization degree of the video information and the audio information is greater than a synchronization threshold;
setting a second attribute of the network connection request of the mobile terminal to a high expansion level when the resolution of the video information is greater than a high resolution threshold, setting the second attribute of the network connection request of the mobile terminal to a medium expansion level when the resolution of the video information is less than or equal to the high resolution threshold and greater than a low resolution threshold, and setting the second attribute of the network connection request of the mobile terminal to a low expansion level when the resolution of the video information is less than or equal to the low resolution threshold;
the authentication server sends the first attribute and the second attribute of the network connection request of the mobile terminal to a content server;
the content server acquires a first attribute of a network connection request of the mobile terminal, establishes network connection between the mobile terminal and a public content library in the content server when the first attribute is a network connection request of a public level, and establishes network connection between the mobile terminal and a private content library in the content server when the first attribute is a network connection request of a private level;
the content server acquires a second attribute of a network connection request of the mobile terminal, when the second attribute is at a high expansion level, the second attribute performs high-level expansion on a retrieval condition in the data acquisition request, and increases the network connection duration by a first time length, so that the mobile terminal can perform data retrieval by using the retrieval condition subjected to high-level expansion within the network connection duration increased by the first time length through the established network connection to acquire a plurality of data files;
when the second attribute is a medium expansion level, performing medium level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a second time length, so that the mobile terminal can perform data retrieval by using the retrieval condition subjected to the medium level expansion within the network connection duration increased by the second time length through the established network connection to acquire a plurality of data files;
and when the second attribute is at a low expansion level, performing low-level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a third time length, so that the mobile terminal can perform data retrieval by using the retrieval condition subjected to low-level expansion within the network connection duration increased by the third time length through the established network connection to acquire a plurality of data files.
The network address of the mobile terminal is an IPv4 address or an IPv6 address; the identifier of the mobile terminal is capable of uniquely identifying the mobile terminal within the internet.
Generating the random string based on the identifier of the mobile terminal includes: randomly transforming the position of each character included in the identifier of the mobile terminal to generate a random string
The content server generating a second combined character string based on the random character string received from the authentication server and the network address of the mobile terminal received from the mobile terminal includes:
the content server character-connects the random character string received from the authentication server with the network address of the mobile terminal received from the mobile terminal to generate a second combined character string
The first memory is a volatile memory and the second memory is a non-volatile memory;
drawings
A more complete understanding of exemplary embodiments of the present invention may be had by reference to the following drawings in which:
fig. 1 is a flowchart of a method for performing hierarchical expansion of data acquisition requests in the internet according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a system for performing hierarchical expansion on a data acquisition request in the internet according to an embodiment of the present invention; and
fig. 3 is a diagram illustrating determining an extension level of a network connection request according to an embodiment of the invention.
Detailed Description
Fig. 1 is a flow diagram of a method 100 for hierarchically expanding data acquisition requests within the internet, in accordance with an embodiment of the present invention.
In step 101, a mobile terminal sends a network connection request, a network address of the mobile terminal and an identifier of the mobile terminal to an authentication server in the internet, wherein the network connection request includes: authentication data and network connection duration. The authentication server is used for verifying authentication data in a network connection request of the mobile terminal, and the internet comprises a plurality of mobile terminals. The network address of the mobile terminal is an IPv4 address or an IPv6 address. The identifier of the mobile terminal is capable of uniquely identifying the mobile terminal within the internet. When a mobile terminal wishes to establish a network connection with a content service within the internet, a network connection request, a network address of the mobile terminal and an identifier of the mobile terminal are sent to an authentication server within the internet. And pre-storing the network address of the authentication server in the mobile terminal, or broadcasting the network address of the authentication server to all mobile terminals in the Internet.
In step 102, after the authentication server receives a network connection request, a network address of a mobile terminal and an identifier of the mobile terminal from the mobile terminal, in a case where authentication data in the network connection request is not verified, generating a random character string based on the identifier of the mobile terminal and a first combined character string based on the random character string and the network address of the mobile terminal, performing hash calculation on the first combined character string using a first hash function to generate a first hash value, the authentication server transmitting a first response message indicating that the network connection request, the network address of the mobile terminal and the identifier of the mobile terminal have been received to the mobile terminal, and the authentication server transmitting the random character string and the first hash value to a content server within the internet; the first response message further includes a network address of the content server.
Generating the random string based on the identifier of the mobile terminal includes: the position of each character(s) included in the identifier of the mobile terminal is randomly transformed to generate a random string. Alternatively, the identifier of the mobile terminal is input into a random string generator to generate a random string by the random string generator. Or, at least one or two random characters are added between any two adjacent characters in a plurality of characters included in the identifier of the mobile terminal to generate a random character string. Alternatively, at least 5, 10 or 15 random characters are added at the beginning or end of the identifier of the mobile terminal to generate a random string.
The generating a first combined string based on the random string and the network address of the mobile terminal includes: the random character string and the network address of the mobile terminal are character-connected to generate a first combined character string. The network address of the mobile terminal is an IPv6 or IPv4 address. The generating a first combined string based on the random string and the network address of the mobile terminal includes: the random string and each digit in the network address of the mobile terminal are character-connected (in order) to generate a first combined string. For example, if the random string is dfakkeddsa and the network address of the mobile terminal is 117.136.38.25, the first combined string is dfakkeddsa 1171363825.
In step 103, in response to receiving the first response message, the mobile terminal sends a data acquisition request and a network address of the mobile terminal to a content server, the content server generates a second combined character string based on the random character string received from the authentication server and the network address of the mobile terminal received from the mobile terminal, performs hash calculation on the second combined character string using a second hash function to generate a second hash value, the content server performs retrieval according to the retrieval conditions in the data acquisition request sent by the mobile terminal to determine all data files associated with the retrieval conditions when the second hash value is equal to the first hash value without receiving a verification result associated with the mobile terminal from the authentication server, and composes metadata of each data file of all data files associated with the retrieval conditions into a metadata set, the metadata collection is transmitted to the mobile terminal without transmitting any of all data files associated with a retrieval condition to the mobile terminal.
And the mobile terminal sends a data acquisition request and the network address of the mobile terminal to the content server according to the network address of the content server. The content server generating a second combined character string based on the random character string received from the authentication server and the network address of the mobile terminal received from the mobile terminal includes: the content server character-connects the random character string received from the authentication server and the network address of the mobile terminal received from the mobile terminal to generate a second combined character string. Or the network address of the mobile terminal is an IPv6 or IPv4 address. The content server character-connects each number (in order) in the random character string received from the authentication server and the network address of the mobile terminal received from the mobile terminal to generate a second combined character string. For example, if the random string is dfakkeddsa and the network address of the mobile terminal is 117.136.38.25, the second combined string is dfakkeddsa 1171363825.
The first hash function and the second hash function are the same hash function. The data acquisition request includes: a search condition, wherein the search condition comprises at least one original search formula. The content server, in the case that a verification result associated with the mobile terminal is not received from an authentication server, searches according to a search condition in a data acquisition request sent by the mobile terminal to determine that all data files associated with the search condition include: and the content server searches in a public content library of the content server according to the search condition in the data acquisition request sent by the mobile terminal to determine all data files associated with the search condition under the condition that the verification result associated with the mobile terminal is not received from the authentication server.
In step 104, the mobile terminal receives the metadata set and stores the metadata set in a first memory, parses the metadata set to determine metadata of each data file, determines a storage size of each data file according to the metadata of each data file, determines a total storage size of all data files associated with the retrieval condition according to the storage size of each data file, and determines a reserved storage space in a second memory according to the total storage size and an expansion coefficient; and when the mobile terminal determines that the residual storage space in the second storage is larger than the reserved storage space, sending a second response message for indicating that the storage space of the mobile terminal is available to the authentication server.
The first memory is a random access memory, the first memory is a volatile memory, and the first memory is a memory of the mobile terminal. The second memory is a flash memory or a flash memory, the second memory being a non-volatile memory. The metadata (of each data file) includes: summary information and storage size. The expansion coefficient is 1.05.
The metadata further includes a file type; wherein the file types include: a video file type, an audio file type, a text file type, and/or a program file type. And counting the file type of each data file in all the data files associated with the retrieval condition to determine the number of the data files of each file type. When the number of data files of the video file type is greater than 1/2 of the total number of all data files associated with the retrieval condition, the expansion coefficient is 1.1. When the number of data files of the audio file type is greater than 1/2 of the total number of all data files associated with the retrieval condition, the expansion coefficient is 1.15. When the number of data files of the text file type is larger than 1/2 of the total number of all data files associated with the retrieval condition, the expansion coefficient is 1.2. When the number of data files of the program file type is larger than 1/2 of the total number of all data files associated with the retrieval condition, the expansion coefficient is 1.25. In other cases, the expansion coefficient is 1.05. The default value of the expansion coefficient is 1.05. The mobile terminal determining the reserved storage space in the second memory according to the total storage size and the expansion coefficient comprises: the mobile terminal takes the product of the total storage size and the expansion coefficient as a reserved storage space in a second memory.
In step 105, while the authentication server sends the random character string and the first hash value to a content server in the internet, the authentication server obtains authentication data and network connection duration in the network connection request, analyzes the authentication data to determine whether the authentication data includes fingerprint information input by a user of the mobile terminal, obtains fingerprint information pre-stored by the user of the mobile terminal from an authentication database in the authentication server according to an identifier of the mobile terminal when it is determined that the authentication data includes the fingerprint information input by the user, and sets a first attribute of the network connection request of the mobile terminal to a private level when the fingerprint information input by the user is the same as the fingerprint information pre-stored by the user; and when the authentication data does not comprise the fingerprint information input by the user or the fingerprint information input by the user is determined to be different from the fingerprint information pre-stored by the user, setting the first attribute of the network connection request of the mobile terminal to be a public level.
The authentication data includes video information and audio information. The authentication data further comprises fingerprint information. For example, the authentication data includes video information and audio information, or the authentication data includes fingerprint information, video information, and audio information. In which a user inputs fingerprint information through a fingerprint input device of a mobile terminal. Wherein the user inputs video information through a camera of the mobile terminal. Wherein a user inputs audio information through a microphone of the mobile terminal. The authentication database in the authentication server comprises fingerprint information pre-stored by each user in a plurality of users which are authenticated in the Internet. And in the authentication database, the fingerprint information of each authenticated user is identified by using the identifier of the mobile terminal of each authenticated user.
In step 106, the authentication server obtains the video information and the audio information in the authentication data, determines the time synchronization degree of the video information and the audio information, and determines the resolution of the video information when the time synchronization degree of the video information and the audio information is greater than a synchronization threshold.
Determining a degree of temporal synchronization of the video information and the audio information comprises: determining whether each video frame of the video information is synchronized with corresponding sound sampling point(s) in the audio information in time, determining video frames synchronized with corresponding sound sampling point(s) in time in all video frames of the video information as synchronized video frames, and taking the ratio of the number of synchronized video frames to the total number of all video frames of the video information as the time synchronization degree of the video information and the audio information. Or, determining whether a plurality of video frames of each second of the video information are synchronized with a plurality of corresponding sound sampling points in the audio information in time, determining the seconds of all the seconds of the video information which are synchronized with the corresponding sound sampling points in time as synchronized seconds, and taking the ratio of the number of the synchronized seconds to the total number of seconds of the video information as the time synchronization degree of the video information and the audio information. Or, determining whether each subtitle scene in all subtitle scenes of the video information corresponds to corresponding sound in the audio information, determining a subtitle scene corresponding to the corresponding sound in all subtitle scenes of the video information as a synchronous subtitle scene, and taking a ratio of the number of the synchronous subtitle scenes to the total number of all subtitle scenes of the video information as a time synchronization degree of the video information and the audio information.
Wherein the subtitle scene includes a plurality of words; the subtitle scene is a basic unit of a subtitle displayed in video information. The subtitle scene is all words in the video information each time a subtitle is presented. Wherein the data format of the degree of time synchronization is a percentage. The synchronization threshold is 50%, 60%, 70%, 80%, 90%, or 95%.
The video information and audio information in the authentication data are a segment of audio video input by the user using an input device of the mobile terminal for authentication. The audio video is used for reading a specific text paragraph or reading a plurality of texts by a user. The specific character paragraph or reading a plurality of characters is sent to the mobile terminal by the authentication server in advance, and the user can generate video information and audio information for authentication by reading the specific character paragraph or reading a plurality of characters. And when the time synchronization degree of the video information and the audio information is less than or equal to a synchronization threshold value, determining that the verification result of the authentication data of the network connection request is failed, and sending a third response message for indicating that the verification result is failed to the mobile terminal.
In step 107, when the resolution of the video information is greater than the high resolution threshold, the second attribute of the network connection request of the mobile terminal is set to a high expansion level, when the resolution of the video information is less than or equal to the high resolution threshold and greater than the low resolution threshold, the second attribute of the network connection request of the mobile terminal is set to a medium expansion level, and when the resolution of the video information is less than or equal to the low resolution threshold, the second attribute of the network connection request of the mobile terminal is set to a low expansion level. For example, the high resolution threshold is 1280 × 720. The low resolution threshold is 720 x 480. It should be appreciated that the high resolution threshold is greater than the low resolution threshold, and that the high resolution threshold and the low resolution threshold may be any reasonable values.
In step 108, the authentication server transmits the first attribute and the second attribute of the network connection request of the mobile terminal to the content server.
The content server acquires a first attribute of a network connection request of the mobile terminal, establishes network connection between the mobile terminal and a public content library in the content server when the first attribute is a network connection request of a public level, and establishes network connection between the mobile terminal and a private content library in the content server when the first attribute is a network connection request of a private level.
The content server acquires a second attribute of the network connection request of the mobile terminal, when the second attribute is at a high expansion level, the second attribute performs high-level expansion on the retrieval condition in the data acquisition request, and increases the network connection duration by a first time length, so that the mobile terminal can perform data retrieval by using the retrieval condition subjected to high-level expansion within the network connection duration increased by the first time length through the established network connection to acquire a plurality of data files.
And when the second attribute is a medium expansion level, performing medium level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a second time length, so that the mobile terminal can perform data retrieval by using the retrieval condition subjected to the medium level expansion within the network connection duration increased by the second time length through the established network connection to acquire a plurality of data files.
And when the second attribute is at a low expansion level, performing low-level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a third time length, so that the mobile terminal can perform data retrieval by using the retrieval condition subjected to low-level expansion within the network connection duration increased by the third time length through the established network connection to acquire a plurality of data files.
The public content repository is a subset of the private content repository. The content server sets a sliding time window that slides over time. The content server stores the data files obtained (from the data source server) within the sliding time window in the private content repository, but not in the public content repository. The content server stores the data files obtained outside the sliding time window (from the data source server) in a private content repository and also in a public content repository. The sliding time window includes a plurality of natural days, for example, 7 natural days, 10 natural days, 15 natural days, 20 natural days, 30 natural days, 60 natural days, 90 natural days, or 180 natural days.
The sliding time window over time includes: when the lapse of time advances by one natural day, the sliding time window slides by one natural day in the time advancing direction. For example, when the sliding time window is 10 natural days, and the current time is any time of the 11 th day in 2018, 11 th day, the sliding time window ranges from (1 st day in 2018, 11 th day in 2018 to 10 th day in 2018, 11 th month, 11 th day, i.e., the content server stores the data files acquired (from the data source server) from the 11 th day in 2018, 1 th day in 2018 to 10 th day in 2018, 11 th month, 10 in the private content repository, but not in the public content repository. When the time advances to 2018, 11, 12 days (for example, any time of 2018, 11, 12 days), the sliding time window ranges from 2018, 11, 2 days in 2018, 11 days in 2018, i.e., the content server stores the data files acquired (from the data source server) from 2018, 11, 1 days in 2018, 11, 10 days in 2018, in the private content repository, but not in the public content repository.
Further, the content server stores the data files obtained outside the sliding time window, i.e., 11/1/2018 (from the data source server), in the private content repository, and also in the public content repository. The content server stores a plurality of new data files acquired within the last 1 month into the private content repository, but not into the public content repository. The content server stores a plurality of new data files acquired within the last 1 week into the private content repository, but not into the public content repository. The content server stores a plurality of new data files acquired within the last 2 months in the private content repository, but not in the public content repository. The common content repository is managed by a first virtual machine in the content server and the common content repository runs in the first virtual machine in the content server. Establishing a network connection between the mobile terminal and a public content repository in a content server includes establishing a network connection between the mobile terminal and a first virtual machine in the content server to enable the mobile terminal to access the public content repository. The private content library is managed by a second virtual machine in the content server and is run in the second virtual machine in the content server. Establishing a network connection between the mobile terminal and a private content library in a content server comprises establishing a network connection between the mobile terminal and a second virtual machine in the content server so that the mobile terminal can access the private content library.
The first length of time is 90%, 80%, 70%, or 60% of the length of time of the network connection duration in the network connection request sent by the mobile terminal. The second length of time is 50%, 40% or 30% of the length of time of the network connection duration in the network connection request sent by the mobile terminal. The third time duration is 20%, 10% or 5% of the time duration of the network connection duration in the network connection request sent by the mobile terminal. Performing high-level expansion on the retrieval conditions in the data acquisition request comprises: and determining the number N of original retrieval formulas included in the retrieval condition in the data acquisition request, and adding N extended retrieval formulas to the retrieval condition to perform high-level extension. Wherein the search condition after high-level expansion comprises N original search expressions and N expanded search expressions. Performing mid-level expansion on the retrieval condition in the data acquisition request comprises: determining the number N of original searching formulas included in the searching condition in the data acquisition request, and adding the number N of the original searching formulas to the searching condition
Figure BDA0001925577190000101
Figure BDA0001925577190000102
The extension indexes are extended at an intermediate level. Wherein the search condition expanded by the middle level comprises N original search formulas
Figure BDA0001925577190000103
An extended search formula. Performing low-level expansion on the retrieval condition in the data acquisition request comprises: determining the number N of original searching formulas included in the searching condition in the data acquisition request, and adding the number N of the original searching formulas to the searching condition
Figure BDA0001925577190000104
An extended index to perform low level extensions. Wherein the search condition subjected to the low-level expansion comprises N original search expressions and
Figure BDA0001925577190000105
Figure BDA0001925577190000106
an extended search formula. Wherein
Figure BDA0001925577190000107
Is to round up N/2.
The expanded search formula is obtained by performing synonym expansion or near synonym expansion on the keywords in the original search formula. Obtaining an extended search formula by expanding a limited range in the original search formula; for example, the limited range in the original search expression is the digest, and the extended search expression is obtained by expanding the digest in the original search expression to the full text.
And when the first attribute is a network connection request of a public level, establishing network connection between the mobile terminal and a public content library in a content server. The content server acquires a second attribute of the network connection request of the mobile terminal, when the second attribute is at a high expansion level, the second attribute performs high-level expansion on the retrieval condition in the data acquisition request, and increases the network connection duration by a first time length, so that the mobile terminal can perform data retrieval in a public content library by using the retrieval condition subjected to high-level expansion within the network connection duration increased by the first time length through the established network connection to acquire a plurality of data files. And when the second attribute is a medium expansion level, performing medium level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a second time length, so that the mobile terminal can perform data retrieval in a public content library by using the retrieval condition subjected to the medium level expansion within the network connection duration increased by the second time length through the established network connection to acquire a plurality of data files. And when the third attribute is at a low expansion level, performing low-level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a third time length, so that the mobile terminal can perform data retrieval in a public content library by using the retrieval condition subjected to low-level expansion within the network connection duration increased by the third time length through the established network connection to acquire a plurality of data files.
And when the first attribute is a network connection request of a private level, establishing network connection between the mobile terminal and a private content library in a content server. The content server acquires a second attribute of the network connection request of the mobile terminal, when the second attribute is at a high expansion level, the second attribute performs high-level expansion on the retrieval condition in the data acquisition request, and increases the network connection duration by a first time length, so that the mobile terminal can perform data retrieval in a private content library by using the retrieval condition subjected to high-level expansion within the network connection duration increased by the first time length through the established network connection to acquire a plurality of data files. And when the second attribute is the medium expansion level, performing medium level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a second time length, so that the mobile terminal can perform data retrieval in the private content library by using the retrieval condition subjected to the medium level expansion within the network connection duration increased by the second time length through the established network connection to acquire a plurality of data files. And when the third attribute is at a low expansion level, performing low-level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a third time length, so that the mobile terminal can perform data retrieval in the private content library by using the retrieval condition subjected to low-level expansion within the network connection duration increased by the third time length through the established network connection to acquire a plurality of data files.
Fig. 2 is a schematic structural diagram of a system 200 for hierarchically expanding data acquisition requests in the internet according to an embodiment of the present invention. The system 200 includes: a mobile terminal 201, an authentication server 202 and a content server 203. Where the mobile terminal 201 is on the user side of the internet. The authentication server 202 and the content server 203 are on the server side 204 of the internet.
A mobile terminal 201 for transmitting a network connection request, a network address of the mobile terminal 201, and an identifier of the mobile terminal 201 to an authentication server 202 in the internet, the network connection request including: authentication data and network connection duration; in response to receiving the first response message, mobile terminal 201 transmits a data acquisition request and a network address of mobile terminal 201 to content server 203.
An authentication server 202 that, upon receiving a network connection request, a network address of the mobile terminal 201, and an identifier of the mobile terminal 201 from the mobile terminal 201, generates a random character string based on the identifier of the mobile terminal 201 and a first combined character string based on the random character string and the network address of the mobile terminal 201 without verifying authentication data in the network connection request, performs hash calculation using a first hash function on the first combined character string to generate a first hash value, the authentication server 202 transmits a first response message indicating that the network connection request, the network address of the mobile terminal 201, and the identifier of the mobile terminal 201 have been received to the mobile terminal 201, and the authentication server 202 transmits the random character string and the first hash value to a content server 203 within the internet; the first response message also includes the network address of the content server 203.
A content server 203 generating a second combined character string based on the random character string received from the authentication server 202 and the network address of the mobile terminal 201 received from the mobile terminal 201, performing a hash calculation on the second combined string using a second hash function to generate a second hash value, when the second hash value is equal to the first hash value, the content server 203, without receiving the verification result associated with the mobile terminal 201 from the authentication server 202, searches are performed according to the search condition in the data acquisition request sent by the mobile terminal 201 to determine all data files associated with the search condition, and composes the metadata of each of all the data files associated with the retrieval condition into a metadata set, and transmits the metadata set to the mobile terminal 201 without transmitting any of all the data files associated with the retrieval condition to the mobile terminal 201.
Further comprising the mobile terminal 201 receiving the metadata set and storing the metadata set in a first memory, parsing the metadata set to determine metadata of each data file, determining a storage size of each data file according to the metadata of each data file, determining a total storage size of all data files associated with the retrieval condition according to the storage size of each data file, and the mobile terminal 201 determining a reserved storage space in a second memory according to the total storage size and an expansion coefficient; when the mobile terminal 201 determines that the remaining memory space in the second memory is greater than the reserved memory space, a second response message indicating that the memory space of the mobile terminal 201 is available is sent to the authentication server 202.
While the authentication server 202 sends the random character string and the first hash value to the content server 203 in the internet, the authentication server 202 acquires authentication data and network connection duration in the network connection request, analyzes the authentication data to determine whether the authentication data includes fingerprint information input by the user of the mobile terminal 201, acquires fingerprint information pre-stored by the user of the mobile terminal 201 from an authentication database in the authentication server 202 according to an identifier of the mobile terminal 201 under the condition that the authentication data includes the fingerprint information input by the user, and sets a first attribute of the network connection request of the mobile terminal 201 to a private level when the fingerprint information input by the user is the same as the fingerprint information pre-stored by the user; when it is determined that the authentication data does not include the fingerprint information input by the user or the fingerprint information input by the user is not identical to the fingerprint information pre-stored by the user, the first attribute of the network connection request of the mobile terminal 201 is set to a common level.
The authentication server 202 obtains the video information and the audio information in the authentication data, determines the time synchronization degree of the video information and the audio information, and determines the resolution of the video information when the time synchronization degree of the video information and the audio information is greater than a synchronization threshold.
Setting a second attribute of the network connection request of the mobile terminal 201 to a high expansion level when the resolution of the video information is greater than a high resolution threshold, setting the second attribute of the network connection request of the mobile terminal 201 to a medium expansion level when the resolution of the video information is less than or equal to the high resolution threshold and greater than a low resolution threshold, and setting the second attribute of the network connection request of the mobile terminal 201 to a low expansion level when the resolution of the video information is less than or equal to the low resolution threshold.
The authentication server 202 transmits the first attribute and the second attribute of the network connection request of the mobile terminal 201 to the content server 203.
The content server 203 acquires a first attribute of the network connection request of the mobile terminal 201, establishes network connection between the mobile terminal 201 and a public content library in the content server 203 when the first attribute is a network connection request of a public level, and establishes network connection between the mobile terminal 201 and a private content library in the content server 203 when the first attribute is a network connection request of a private level.
The content server 203 acquires a second attribute of the network connection request of the mobile terminal 201, performs high-level expansion on the retrieval condition in the data acquisition request when the second attribute is at a high expansion level, and increases the network connection duration by a first time length, so that the mobile terminal 201 can perform data retrieval by using the retrieval condition subjected to the high-level expansion within the network connection duration increased by the first time length through the established network connection to acquire a plurality of data files.
When the second attribute is a medium expansion level, performing medium level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a second time length, so that the mobile terminal 201 can perform data retrieval by using the retrieval condition subjected to the medium level expansion within the network connection duration increased by the second time length through the established network connection to acquire a plurality of data files;
when the second attribute is a low expansion level, performing low-level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a third time length, so that the mobile terminal 201 can perform data retrieval by using the retrieval condition subjected to low-level expansion within the network connection duration increased by the third time length through the established network connection to acquire a plurality of data files.
Wherein the authentication server 202 is configured to verify authentication data in the network connection request of the mobile terminal 201. A plurality of mobile terminals 201 are included in the internet. The network address of the mobile terminal 201 is an IPv4 address or an IPv6 address. The identifier of the mobile terminal 201 is capable of uniquely identifying the mobile terminal 201 within the internet. When the mobile terminal 201 desires to establish a network connection with a content service within the internet, a network connection request, a network address of the mobile terminal 201, and an identifier of the mobile terminal 201 are transmitted to the authentication server 202 within the internet. The network address of the authentication server 202 is stored in the mobile terminal 201 in advance, or the network address of the authentication server 202 is broadcasted to all the mobile terminals 201 in the internet.
Generating the random string based on the identifier of the mobile terminal 201 includes: the position of each character(s) comprised by the identifier of the mobile terminal 201 is randomly transformed to generate a random string. Alternatively, the identifier of the mobile terminal 201 is input into a random string generator to generate a random string by the random string generator. Alternatively, (at least one) (two) random characters are added between any two adjacent characters of a plurality of characters included in the identifier of the mobile terminal 201 to generate a random character string. Alternatively, at least 5, 10 or 15 random characters are added at the beginning or end of the identifier of the mobile terminal 201 to generate a random string.
The generating of the first combined character string based on the random character string and the network address of the mobile terminal 201 includes: the random string and the network address of the mobile terminal 201 are character-connected to generate a first combined string. The network address of the mobile terminal 201 is an IPv6 or IPv4 address. The generating of the first combined character string based on the random character string and the network address of the mobile terminal 201 includes: the random string is character-connected (in order) with each digit in the network address of the mobile terminal 201 to generate a first combined string. For example, if the random string is dfakkeddsa and the network address of the mobile terminal 201 is 117.136.38.25, the first combined string is dfakkeddsa 1171363825.
The mobile terminal 201 transmits a data acquisition request and a network address of the mobile terminal 201 to the content server 203 according to the network address of the content server 203. The content server 203 generating a second combined character string based on the random character string received from the authentication server 202 and the network address of the mobile terminal 201 received from the mobile terminal 201 includes: the content server 203 character-connects the random character string received from the authentication server 202 and the network address of the mobile terminal 201 received from the mobile terminal 201 to generate a second combined character string.
Or, the network address of the mobile terminal 201 is an IPv6 or IPv4 address. The content server 203 character-connects each number (in order) in the random character string received from the authentication server 202 and the network address of the mobile terminal 201 received from the mobile terminal 201 to generate a second combined character string. For example, if the random string is dfakkeddsa and the network address of the mobile terminal 201 is 117.136.38.25, the second combined string is dfakkeddsa 1171363825. The first hash function and the second hash function are the same hash function.
The data acquisition request includes: a search condition, wherein the search condition comprises at least one original search formula. The content server 203, in the case of not receiving the verification result associated with the mobile terminal 201 from the authentication server 202, performs a search according to the search condition in the data acquisition request sent by the mobile terminal 201 to determine that all data files associated with the search condition include: the content server 203 searches the public content library of the content server 203 according to the search condition in the data acquisition request sent by the mobile terminal 201 to determine all data files associated with the search condition without receiving the verification result associated with the mobile terminal 201 from the authentication server 202.
The first memory is a random access memory, the first memory is a volatile memory, and the first memory is a memory of the mobile terminal 201. The second memory is a flash memory or a flash memory, the second memory being a non-volatile memory. The metadata (of each data file) includes: summary information and storage size. The expansion coefficient is 1.05. The metadata further includes a file type; wherein the file types include: a video file type, an audio file type, a text file type, and/or a program file type. And counting the file type of each data file in all the data files associated with the retrieval condition to determine the number of the data files of each file type.
When the number of data files of the video file type is greater than 1/2 of the total number of all data files associated with the retrieval condition, the expansion coefficient is 1.1. When the number of data files of the audio file type is greater than 1/2 of the total number of all data files associated with the retrieval condition, the expansion coefficient is 1.15. When the number of data files of the text file type is larger than 1/2 of the total number of all data files associated with the retrieval condition, the expansion coefficient is 1.2. When the number of data files of the program file type is larger than 1/2 of the total number of all data files associated with the retrieval condition, the expansion coefficient is 1.25. In other cases, the expansion coefficient is 1.05. The determining, by the mobile terminal 201, the reserved storage space in the second storage according to the total storage size and the expansion coefficient includes: the mobile terminal 201 takes the product of the total memory size and the expansion factor as the reserved memory space in the second memory.
The authentication data includes video information and audio information. The authentication data further comprises fingerprint information. In which a user inputs fingerprint information through a fingerprint input device of the mobile terminal 201. Wherein the user inputs video information through the camera of the mobile terminal 201. Wherein a user inputs audio information through a microphone of the mobile terminal 201. The authentication database in the authentication server 202 includes fingerprint information pre-stored by each of a plurality of users who have undergone identity authentication in the internet. In the authentication database, the fingerprint information of each authenticated user is identified by the identifier of the mobile terminal 201 of each authenticated user.
Determining a degree of temporal synchronization of the video information and the audio information comprises: determining whether each video frame of the video information is synchronized with corresponding sound sampling point(s) in the audio information in time, determining video frames synchronized with corresponding sound sampling point(s) in time in all video frames of the video information as synchronized video frames, and taking the ratio of the number of synchronized video frames to the total number of all video frames of the video information as the time synchronization degree of the video information and the audio information. Or, determining whether a plurality of video frames of each second of the video information are synchronized with a plurality of corresponding sound sampling points in the audio information in time, determining the seconds of all the seconds of the video information which are synchronized with the corresponding sound sampling points in time as synchronized seconds, and taking the ratio of the number of the synchronized seconds to the total number of seconds of the video information as the time synchronization degree of the video information and the audio information. Or, determining whether each subtitle scene in all subtitle scenes of the video information corresponds to corresponding sound in the audio information, determining a subtitle scene corresponding to the corresponding sound in all subtitle scenes of the video information as a synchronous subtitle scene, and taking a ratio of the number of the synchronous subtitle scenes to the total number of all subtitle scenes of the video information as a time synchronization degree of the video information and the audio information.
Wherein the subtitle scene includes a plurality of words; the subtitle scene is a basic unit of a subtitle displayed in video information. The subtitle scene is all words in the video information each time a subtitle is presented. Wherein the data format of the degree of time synchronization is a percentage. The synchronization threshold is 50%, 60%, 70%, 80%, 90%, or 95%. The high resolution threshold is 1280 × 720; the low resolution threshold is 720 x 480.
The public content repository is a subset of the private content repository. The content server 203 sets a sliding time window that slides over time. The content server 203 stores the data files obtained within the sliding time window (from the data origin server) in the private content repository, but not in the public content repository. The content server 203 stores the data files obtained outside the sliding time window (from the data origin server) in the private content repository and also in the public content repository. The sliding time window includes a plurality of natural days, for example, 7 natural days, 10 natural days, 15 natural days, 20 natural days, 30 natural days, 60 natural days, 90 natural days, or 180 natural days.
The sliding time window over time includes: when the lapse of time advances by one natural day, the sliding time window slides by one natural day in the time advancing direction. For example, when the sliding time window is 10 natural days and the current time is any time of the 11 th day in 2018, (the range of) the sliding time window is from the 1 st day in 2018, the 11 th day in 2018 to the 10 th day in 2018, that is, the content server 203 stores the data files acquired (from the data source server) from the 1 st day in 2018, the 11 th day in 2018 to the 10 th day in 2018, in the private content repository, but not in the public content repository.
When the time advances to 2018, 11, 12 days (for example, any time of 2018, 11, 12 days), the sliding time window ranges from 2018, 11, 2 days in 2018, 11 days in 2018, i.e., the content server 203 stores the data files acquired (from the data source server) from 2018, 11, 1 days in 2018, 11, 10 days in 2018, in the private content repository, but not in the public content repository. Further, the content server 203 stores the data file acquired outside the sliding time window, i.e., 11/1/2018 (from the data source server), in the private content repository, and also in the public content repository.
The content server 203 stores a plurality of new data files acquired within the last 1 month into the private content repository, but not into the public content repository. The content server 203 stores a plurality of new data files acquired within the last 1 week in the private content repository, but not in the public content repository. The content server 203 stores a plurality of new data files acquired within the last 2 months in the private content repository, but not in the public content repository. The common content repository is managed by a first virtual machine in the content server 203 and runs in the first virtual machine in the content server 203.
Establishing a network connection between the mobile terminal 201 and a public content repository in the content server 203 comprises establishing a network connection between the mobile terminal 201 and a first virtual machine in the content server 203 to enable the mobile terminal 201 to access the public content repository. The private content repository is managed by a second virtual machine in the content server 203 and runs in the second virtual machine in the content server 203. Establishing a network connection between the mobile terminal 201 and the private content repository in the content server 203 comprises establishing a network connection between the mobile terminal 201 and a second virtual machine in the content server 203 to enable the mobile terminal 201 to access the private content repository.
The first length of time is 90%, 80%, 70%, or 60% of the length of time of the network connection duration in the network connection request sent by mobile terminal 201. The second time duration is 50%, 40% or 30% of the time duration of the network connection duration in the network connection request sent by the mobile terminal 201. The third time duration is 20%, 10% or 5% of the time duration of the network connection duration in the network connection request sent by the mobile terminal 201. Performing high-level expansion on the retrieval conditions in the data acquisition request comprises: and determining the number N of original retrieval formulas included in the retrieval condition in the data acquisition request, and adding N extended retrieval formulas to the retrieval condition to perform high-level extension. Wherein the search condition after high-level expansion comprises N original search expressions and N expanded search expressions.
Performing mid-level expansion on the retrieval condition in the data acquisition request comprises: determining the number N of original searching formulas included in the searching condition in the data acquisition request, and adding the number N of the original searching formulas to the searching condition
Figure BDA0001925577190000161
The extension indexes are extended at an intermediate level. Wherein the search condition expanded by the middle level comprises N original search formulas
Figure BDA0001925577190000162
An extended search formula. Performing low-level expansion on the retrieval condition in the data acquisition request comprises: determining the number N of original searching formulas included in the searching condition in the data acquisition request, and adding the number N of the original searching formulas to the searching condition
Figure BDA0001925577190000163
An extended index to perform low level extensions. Wherein the search condition subjected to the low-level expansion comprises N original search expressions and
Figure BDA0001925577190000164
an extended search formula. The expanded search formula is obtained by performing synonym expansion or near synonym expansion on the keywords in the original search formula. Obtaining an extended search formula by expanding a limited range in the original search formula; for example, the limited range in the original search expression is the digest, and the extended search expression is obtained by expanding the digest in the original search expression to the full text.
The video information and audio information in the authentication data are a segment of audio video input by the user using the input device of the mobile terminal 201 for authentication. The audio video is used for reading a specific text paragraph or reading a plurality of texts by a user. The specific text paragraph or reading multiple texts is sent to the mobile terminal 201 by the authentication server 202 in advance, so that the user can generate video information and audio information for authentication by reading the specific text paragraph or reading multiple texts. When the time synchronization degree of the video information and the audio information is less than or equal to the synchronization threshold, it is determined that the verification result of the authentication data of the network connection request is a failure, and a third response message indicating that the verification result is a failure is sent to the mobile terminal 201.
And when the first attribute is a network connection request of a public level, establishing network connection between the mobile terminal 201 and a public content library in a content server 203. The content server 203 acquires a second attribute of the network connection request of the mobile terminal 201, performs high-level expansion on the retrieval condition in the data acquisition request when the second attribute is at a high expansion level, and increases the network connection duration by a first time length, so that the mobile terminal 201 can perform data retrieval in a common content repository by using the retrieval condition subjected to the high-level expansion within the network connection duration increased by the first time length through the established network connection to acquire a plurality of data files. When the second attribute is the middle extension level, performing middle level extension on the retrieval condition in the data acquisition request, and increasing the network connection duration by a second time length, so that the mobile terminal 201 can perform data retrieval in the common content repository by using the retrieval condition subjected to the middle level extension within the network connection duration increased by the second time length through the established network connection to acquire a plurality of data files. When the third attribute is a low expansion level, performing low-level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a third time length, so that the mobile terminal 201 can perform data retrieval in a common content repository by using the retrieval condition subjected to low-level expansion within the network connection duration increased by the third time length through the established network connection to acquire a plurality of data files.
And when the first attribute is a network connection request of a private level, establishing network connection between the mobile terminal 201 and a private content library in the content server 203. The content server 203 acquires a second attribute of the network connection request of the mobile terminal 201, performs high-level expansion on the retrieval condition in the data acquisition request when the second attribute is at a high expansion level, and increases the network connection duration by a first time length, so that the mobile terminal 201 can perform data retrieval in a private content library by using the retrieval condition subjected to the high-level expansion within the network connection duration increased by the first time length through the established network connection to acquire a plurality of data files. When the second attribute is the middle extension level, performing middle level extension on the retrieval condition in the data acquisition request, and increasing the network connection duration by a second time length, so that the mobile terminal 201 can perform data retrieval in the private content library by using the retrieval condition subjected to the middle level extension within the network connection duration increased by the second time length through the established network connection to acquire a plurality of data files. When the third attribute is a low expansion level, performing low-level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a third time length, so that the mobile terminal 201 can perform data retrieval in the private content repository by using the retrieval condition subjected to the low-level expansion within the network connection duration increased by the third time length through the established network connection to acquire a plurality of data files.
Fig. 3 is a diagram illustrating determining an extension level of a network connection request according to an embodiment of the invention. The authentication server acquires authentication data and network connection duration in the network connection request, analyzes the authentication data to determine whether the authentication data comprises fingerprint information input by a user of the mobile terminal, acquires fingerprint information pre-stored by the user of the mobile terminal from an authentication database in the authentication server according to an identifier of the mobile terminal under the condition that the authentication data comprises the fingerprint information input by the user, and sets a first attribute of the network connection request of the mobile terminal to be a private level when the fingerprint information input by the user is the same as the fingerprint information pre-stored by the user; and when the authentication data does not comprise the fingerprint information input by the user or the fingerprint information input by the user is determined to be different from the fingerprint information pre-stored by the user, setting the first attribute of the network connection request of the mobile terminal to be a public level.
And the authentication server acquires the video information and the audio information in the authentication data, determines the time synchronization degree of the video information and the audio information, and determines the resolution of the video information when the time synchronization degree of the video information and the audio information is greater than a synchronization threshold. At the determined extension level 303 of the network connection request, when the resolution of the video information is greater than the high resolution threshold, the second attribute of the network connection request of the mobile terminal is set to a high extension level, when the resolution of the video information is less than or equal to the high resolution threshold and greater than the low resolution threshold, the second attribute of the network connection request of the mobile terminal is set to a medium extension level, and when the resolution of the video information is less than or equal to the low resolution threshold, the second attribute of the network connection request of the mobile terminal is set to a low extension level. For example, the high resolution threshold is 1280 × 720. The low resolution threshold is 720 x 480. It should be appreciated that the high resolution threshold is greater than the low resolution threshold, and that the high resolution threshold and the low resolution threshold may be any reasonable values.
The first attribute and the second attribute of the network connection request of the mobile terminal are transmitted to the content server 304. The content server obtains 304 a first attribute of the network connection request of the mobile terminal, establishes a network connection between the mobile terminal and a public content library 301 in the content server 304 when the first attribute is a network connection request of a public level, and establishes a network connection between the mobile terminal and a private content library 302 in the content server when the first attribute is a network connection request of a private level.
The content server 304 acquires a second attribute of the network connection request of the mobile terminal, performs high-level expansion on the retrieval condition in the data acquisition request when the second attribute is at a high expansion level, and increases the network connection duration by a first time length, so that the mobile terminal can perform data retrieval by using the retrieval condition subjected to the high-level expansion within the network connection duration increased by the first time length through the established network connection to acquire a plurality of data files.
And when the second attribute is a medium expansion level, performing medium level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a second time length, so that the mobile terminal can perform data retrieval by using the retrieval condition subjected to the medium level expansion within the network connection duration increased by the second time length through the established network connection to acquire a plurality of data files.
And when the second attribute is at a low expansion level, performing low-level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a third time length, so that the mobile terminal can perform data retrieval by using the retrieval condition subjected to low-level expansion within the network connection duration increased by the third time length through the established network connection to acquire a plurality of data files.
The public content repository 301 is a subset of the private content repository 302. The content server 304 sets a sliding time window that slides over time. The content server 304 stores the data files obtained (from the data origin server) within the sliding time window in the private content repository 302 and not in the public content repository 301. The content server 304 stores the data files obtained outside the sliding time window (from the data origin server) in the private content repository 302 and also in the public content repository 301. The sliding time window includes a plurality of natural days, for example, 7 natural days, 10 natural days, 15 natural days, 20 natural days, 30 natural days, 60 natural days, 90 natural days, or 180 natural days.
The sliding time window over time includes: when the lapse of time advances by one natural day, the sliding time window slides by one natural day in the time advancing direction. For example, when the sliding time window is 10 natural days and the current time is any time of the 11 th day in 2018, (the range of) the sliding time window is from the 1 st day in 2018, 11 th day in 2018 to the 10 th day in 2018, that is, the content server 304 stores the data files acquired (from the data source server) from the 1 st day in 2018, 11 th day in 2018 to the 10 th day in 2018, 11 th day in 2018 in the private content repository 302, but not in the public content repository 301. When the time advances to 2018, 11, 12 days (for example, any time of 2018, 11, 12 days), the sliding time window ranges from 2018, 11, 2 days in 2018, 11 days in 2018, i.e., the content server 304 stores the data files acquired (from the data source server) from 2018, 11, 1 days in 2018, 11, 10 days in 2018, in the private content repository 302, but not in the public content repository 301.
Further, the content server 304 stores the data files acquired outside the sliding time window, i.e., 11/1/2018 (from the data source server), in the private content repository 302 and also in the public content repository 301. The content server 304 stores a plurality of new data files acquired within the last 1 month into the private content repository 302, but not into the public content repository 301. The content server 304 stores a number of new data files acquired within the last 1 week into the private content repository 302 and not into the public content repository 301. The content server 304 stores a plurality of new data files acquired within the last 2 months in the private content repository 302, but not in the public content repository 301. The common content repository 301 is managed by a first virtual machine in the content server 304, and the common content repository 301 runs in the first virtual machine in the content server 304. Establishing a network connection with the public content repository 301 in the content server 304 comprises establishing a network connection with the mobile terminal with a first virtual machine in the content server 304 to enable the mobile terminal to access the public content repository 301. The private content library 302 is managed by a second virtual machine in the content server 304, and the private content library 302 runs in the second virtual machine in the content server 304. Establishing a network connection with the private content repository 302 in the content server 304 includes establishing a network connection with the mobile terminal with a second virtual machine in the content server 304 to enable the mobile terminal to access the private content repository 302.
The first length of time is 90%, 80%, 70%, or 60% of the length of time of the network connection duration in the network connection request sent by the mobile terminal. The second length of time is 50%, 40% or 30% of the length of time of the network connection duration in the network connection request sent by the mobile terminal. The third time duration is 20%, 10% or 5% of the time duration of the network connection duration in the network connection request sent by the mobile terminal. Performing high-level expansion on the retrieval conditions in the data acquisition request comprises: and determining the number N of original retrieval formulas included in the retrieval condition in the data acquisition request, and adding N extended retrieval formulas to the retrieval condition to perform high-level extension. Wherein the search condition after high-level expansion comprises N original search expressions and N expanded search expressions. Performing mid-level expansion on the retrieval condition in the data acquisition request comprises: determining the number N of original searching formulas included in the searching condition in the data acquisition request, and adding the number N of the original searching formulas to the searching condition
Figure BDA0001925577190000191
Figure BDA0001925577190000192
The extension indexes are extended at an intermediate level. Wherein the search condition expanded by the middle level comprises N original search formulas
Figure BDA0001925577190000193
An extended search formula. Performing low-level expansion on the retrieval condition in the data acquisition request comprises: determining said numberAdding the number N of original searching formulas included in the searching condition in the acquisition request to the searching condition
Figure BDA0001925577190000194
An extended index to perform low level extensions. Wherein the search condition subjected to the low-level expansion comprises N original search expressions and
Figure BDA0001925577190000195
Figure BDA0001925577190000196
an extended search formula. Wherein
Figure BDA0001925577190000197
Is to round up N/2.
The expanded search formula is obtained by performing synonym expansion or near synonym expansion on the keywords in the original search formula. Obtaining an extended search formula by expanding a limited range in the original search formula; for example, the limited range in the original search expression is the digest, and the extended search expression is obtained by expanding the digest in the original search expression to the full text.
And when the first attribute is a network connection request of a public level, establishing network connection between the mobile terminal and a public content library 301 in a content server 304. The content server 304 acquires a second attribute of the network connection request of the mobile terminal, performs high-level expansion on the retrieval condition in the data acquisition request when the second attribute is at a high expansion level, and increases the network connection duration by a first time length, so that the mobile terminal can perform data retrieval in the common content repository 301 by using the retrieval condition subjected to the high-level expansion within the network connection duration increased by the first time length through the established network connection to acquire a plurality of data files. When the second attribute is the middle extension level, performing middle level extension on the retrieval condition in the data acquisition request, and increasing the network connection duration by a second time length, so that the mobile terminal can perform data retrieval in the common content repository 301 by using the retrieval condition subjected to the middle level extension within the network connection duration increased by the second time length through the established network connection to acquire a plurality of data files. And when the third attribute is a low expansion level, performing low-level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a third time length, so that the mobile terminal can perform data retrieval in the common content repository 301 by using the retrieval condition subjected to the low-level expansion within the network connection duration increased by the third time length through the established network connection to acquire a plurality of data files.
And when the first attribute is a network connection request of a private level, establishing network connection between the mobile terminal and a private content library 302 in a content server 304. The content server 304 acquires a second attribute of the network connection request of the mobile terminal, performs high-level expansion on the retrieval condition in the data acquisition request when the second attribute is at a high expansion level, and increases the network connection duration by a first time length, so that the mobile terminal can perform data retrieval in the private content library 302 by using the retrieval condition subjected to the high-level expansion within the network connection duration increased by the first time length through the established network connection to acquire a plurality of data files. When the second attribute is the middle extension level, performing middle level extension on the retrieval condition in the data acquisition request, and increasing the network connection duration by a second time length, so that the mobile terminal can perform data retrieval in the private content library 302 by using the retrieval condition subjected to the middle level extension within the network connection duration increased by the second time length through the established network connection to acquire a plurality of data files. And when the third attribute is a low expansion level, performing low-level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a third time length, so that the mobile terminal can perform data retrieval in the private content library 302 by using the retrieval condition subjected to the low-level expansion within the network connection duration increased by the third time length through the established network connection to acquire a plurality of data files.

Claims (10)

1. A method of hierarchically expanding data acquisition requests within the internet, the method comprising:
the mobile terminal sends a network connection request, a network address of the mobile terminal and an identifier of the mobile terminal to an authentication server in the internet, wherein the network connection request comprises: authentication data and network connection duration;
when an authentication server receives a network connection request, a network address of a mobile terminal and an identifier of the mobile terminal from the mobile terminal, and in the case that authentication data in the network connection request is not verified, generating a random string based on the identifier of the mobile terminal and a first combined string based on the random string and the network address of the mobile terminal, performing hash calculation on the first combined string using a first hash function to generate a first hash value, the authentication server transmitting a first response message indicating that the network connection request, the network address of the mobile terminal and the identifier of the mobile terminal have been received to the mobile terminal, and the authentication server transmitting the random string and the first hash value to a content server within the internet; the first response message further includes a network address of the content server;
in response to receiving the first response message, the mobile terminal transmitting a data acquisition request and a network address of the mobile terminal to a content server, the content server generating a second combined character string based on the random character string received from the authentication server and the network address of the mobile terminal received from the mobile terminal, hash-calculating the second combined character string using a second hash function to generate a second hash value, the content server searching according to a search condition in the data acquisition request transmitted from the mobile terminal to determine all data files associated with the search condition when the second hash value is equal to the first hash value without receiving a verification result associated with the mobile terminal from the authentication server, and composing metadata of each of the all data files associated with the search condition into a set, transmitting the set of metadata to the mobile terminal without transmitting any of all data files associated with a retrieval condition to the mobile terminal;
the mobile terminal receives the metadata set, stores the metadata set in a first storage, analyzes the metadata set to determine metadata of each data file, determines the storage size of each data file according to the metadata of each data file, determines the total storage size of all the data files related to the retrieval condition according to the storage size of each data file, and determines a reserved storage space in a second storage according to the total storage size and an expansion coefficient; when the mobile terminal determines that the residual storage space in the second storage is larger than the reserved storage space, sending a second response message for indicating that the storage space of the mobile terminal is available to the authentication server;
when an authentication server sends the random character string and the first hash value to a content server in the Internet, the authentication server acquires authentication data and network connection duration in the network connection request, analyzes the authentication data to determine whether the authentication data comprises fingerprint information input by a user of the mobile terminal, acquires fingerprint information pre-stored by the user of the mobile terminal from an authentication database in the authentication server according to an identifier of the mobile terminal under the condition that the authentication data comprises the fingerprint information input by the user, and sets a first attribute of the network connection request of the mobile terminal to be a private level when the fingerprint information input by the user is the same as the fingerprint information pre-stored by the user; when the authentication data does not comprise fingerprint information input by a user or the fingerprint information input by the user is different from fingerprint information stored in advance by the user, setting a first attribute of a network connection request of the mobile terminal to be a public level;
the authentication server acquires video information and audio information in the authentication data, determines the time synchronization degree of the video information and the audio information, and determines the resolution of the video information when the time synchronization degree of the video information and the audio information is greater than a synchronization threshold;
setting a second attribute of the network connection request of the mobile terminal to a high expansion level when the resolution of the video information is greater than a high resolution threshold, setting the second attribute of the network connection request of the mobile terminal to a medium expansion level when the resolution of the video information is less than or equal to the high resolution threshold and greater than a low resolution threshold, and setting the second attribute of the network connection request of the mobile terminal to a low expansion level when the resolution of the video information is less than or equal to the low resolution threshold;
the authentication server sends the first attribute and the second attribute of the network connection request of the mobile terminal to a content server;
the content server acquires a first attribute of a network connection request of the mobile terminal, establishes network connection between the mobile terminal and a public content library in the content server when the first attribute is a network connection request of a public level, and establishes network connection between the mobile terminal and a private content library in the content server when the first attribute is a network connection request of a private level;
the content server acquires a second attribute of a network connection request of the mobile terminal, when the second attribute is at a high expansion level, the second attribute performs high-level expansion on a retrieval condition in the data acquisition request, and increases the network connection duration by a first time length, so that the mobile terminal can perform data retrieval by using the retrieval condition subjected to high-level expansion within the network connection duration increased by the first time length through the established network connection to acquire a plurality of data files;
when the second attribute is a medium expansion level, performing medium level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a second time length, so that the mobile terminal can perform data retrieval by using the retrieval condition subjected to the medium level expansion within the network connection duration increased by the second time length through the established network connection to acquire a plurality of data files;
and when the second attribute is at a low expansion level, performing low-level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a third time length, so that the mobile terminal can perform data retrieval by using the retrieval condition subjected to low-level expansion within the network connection duration increased by the third time length through the established network connection to acquire a plurality of data files.
2. The method of claim 1, the network address of the mobile terminal being an IPv4 address or an IPv6 address; the identifier of the mobile terminal is capable of uniquely identifying the mobile terminal within the internet.
3. The method of claim 1, generating a random string based on an identifier of the mobile terminal comprising: and randomly transforming the position of each character included in the identifier of the mobile terminal to generate a random character string.
4. The method of claim 2, the content server generating a second combined string based on the random string received from the authentication server and the network address of the mobile terminal received from the mobile terminal comprising:
the content server character-connects the random character string received from the authentication server and the network address of the mobile terminal received from the mobile terminal to generate a second combined character string.
5. The method of claim 4, the first memory being a volatile memory and the second memory being a non-volatile memory.
6. A system for hierarchically expanding data retrieval requests within an internet, the system comprising:
a mobile terminal for transmitting a network connection request, a network address of the mobile terminal and an identifier of the mobile terminal to an authentication server in the internet, the network connection request including: authentication data and network connection duration; in response to receiving the first response message, the mobile terminal sends a data acquisition request and a network address of the mobile terminal to the content server;
an authentication server that, upon receiving a network connection request, a network address of a mobile terminal, and an identifier of the mobile terminal from the mobile terminal, generates a random string based on the identifier of the mobile terminal and a first combined string based on the random string and the network address of the mobile terminal without verifying authentication data in the network connection request, performs hash calculation using a first hash function on the first combined string to generate a first hash value, transmits a first response message indicating that the network connection request, the network address of the mobile terminal, and the identifier of the mobile terminal have been received to the mobile terminal, and transmits the random string and the first hash value to a content server within the internet; the first response message further includes a network address of the content server;
a content server generating a second combined character string based on the random character string received from the authentication server and the network address of the mobile terminal received from the mobile terminal, performing a hash calculation on the second combined string using a second hash function to generate a second hash value, when the second hash value is equal to the first hash value, the content server, without receiving a verification result associated with the mobile terminal from an authentication server, searching according to the searching condition in the data acquisition request sent by the mobile terminal to determine all data files associated with the searching condition, the metadata of each data file in all the data files associated with the retrieval condition form a metadata set, and the metadata set is sent to the mobile terminal without sending any data file in all the data files associated with the retrieval condition to the mobile terminal;
the mobile terminal receives the metadata set, stores the metadata set in a first memory, analyzes the metadata set to determine metadata of each data file, determines the storage size of each data file according to the metadata of each data file, determines the total storage size of all data files associated with the retrieval condition according to the storage size of each data file, and determines a reserved storage space in a second memory according to the total storage size and an expansion coefficient; when the mobile terminal determines that the residual storage space in the second storage is larger than the reserved storage space, sending a second response message for indicating that the storage space of the mobile terminal is available to the authentication server;
when an authentication server sends the random character string and the first hash value to a content server in the Internet, the authentication server acquires authentication data and network connection duration in the network connection request, analyzes the authentication data to determine whether the authentication data comprises fingerprint information input by a user of the mobile terminal, acquires fingerprint information pre-stored by the user of the mobile terminal from an authentication database in the authentication server according to an identifier of the mobile terminal under the condition that the authentication data comprises the fingerprint information input by the user, and sets a first attribute of the network connection request of the mobile terminal to be a private level when the fingerprint information input by the user is the same as the fingerprint information pre-stored by the user; when the authentication data does not comprise fingerprint information input by a user or the fingerprint information input by the user is different from fingerprint information stored in advance by the user, setting a first attribute of a network connection request of the mobile terminal to be a public level;
the authentication server acquires video information and audio information in the authentication data, determines the time synchronization degree of the video information and the audio information, and determines the resolution of the video information when the time synchronization degree of the video information and the audio information is greater than a synchronization threshold;
setting a second attribute of the network connection request of the mobile terminal to a high expansion level when the resolution of the video information is greater than a high resolution threshold, setting the second attribute of the network connection request of the mobile terminal to a medium expansion level when the resolution of the video information is less than or equal to the high resolution threshold and greater than a low resolution threshold, and setting the second attribute of the network connection request of the mobile terminal to a low expansion level when the resolution of the video information is less than or equal to the low resolution threshold;
the authentication server sends the first attribute and the second attribute of the network connection request of the mobile terminal to a content server;
the content server acquires a first attribute of a network connection request of the mobile terminal, establishes network connection between the mobile terminal and a public content library in the content server when the first attribute is a network connection request of a public level, and establishes network connection between the mobile terminal and a private content library in the content server when the first attribute is a network connection request of a private level;
the content server acquires a second attribute of a network connection request of the mobile terminal, when the second attribute is at a high expansion level, the second attribute performs high-level expansion on a retrieval condition in the data acquisition request, and increases the network connection duration by a first time length, so that the mobile terminal can perform data retrieval by using the retrieval condition subjected to high-level expansion within the network connection duration increased by the first time length through the established network connection to acquire a plurality of data files;
when the second attribute is a medium expansion level, performing medium level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a second time length, so that the mobile terminal can perform data retrieval by using the retrieval condition subjected to the medium level expansion within the network connection duration increased by the second time length through the established network connection to acquire a plurality of data files;
and when the second attribute is at a low expansion level, performing low-level expansion on the retrieval condition in the data acquisition request, and increasing the network connection duration by a third time length, so that the mobile terminal can perform data retrieval by using the retrieval condition subjected to low-level expansion within the network connection duration increased by the third time length through the established network connection to acquire a plurality of data files.
7. The system of claim 6, the network address of the mobile terminal is an IPv4 address or an IPv6 address; the identifier of the mobile terminal is capable of uniquely identifying the mobile terminal within the internet.
8. The system of claim 6, wherein generating the random string based on the identifier of the mobile terminal comprises: and randomly transforming the position of each character included in the identifier of the mobile terminal to generate a random character string.
9. The system of claim 7, the content server generating a second combined string based on the random string received from the authentication server and the network address of the mobile terminal received from the mobile terminal comprising:
the content server character-connects the random character string received from the authentication server and the network address of the mobile terminal received from the mobile terminal to generate a second combined character string.
10. The system of claim 9, the first memory being a volatile memory and the second memory being a non-volatile memory.
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