CN109325160B - Webpage snapshot generating method and device - Google Patents
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Abstract
The embodiment of the invention provides a method and a device for generating a webpage snapshot, wherein the method is used for acquiring a webpage snapshot display request, the webpage snapshot display request is used for requesting to display a snapshot of a first webpage, the first webpage comprises at least one display area, identification of blocks corresponding to the display areas respectively is acquired, display information in the blocks is acquired from a block chain database according to the identification of the blocks, and the snapshot corresponding to the first webpage is generated; the webpage is stored in a partitioned mode by adopting a block chain technology, so that the generated webpage snapshot has the anti-tampering characteristic, and the authenticity of the webpage snapshot is ensured; furthermore, the method also reduces the waste of storage resources and improves the performance of the snapshot generating system.
Description
Technical Field
The embodiment of the invention relates to the technical field of internet, in particular to a method and a device for generating a webpage snapshot.
Background
When a user clicks a 'web snapshot' link in the search engine, the search engine displays the web content captured and stored in the server cache at that time, which is called 'web snapshot'. Because web page snapshots are stored in the servers of the search engine, web page snapshots are often viewed faster than web pages that are accessed directly. In the web page snapshot, the searched keywords are displayed in bright colors, and a user can click the keywords which are displayed in the bright colors to directly find the occurrence positions of the keywords, so that the user can conveniently and quickly find required information, and the searching efficiency is improved.
At present, methods for generating and displaying web page snapshots mainly include two ways. One is to use web crawlers to capture and store web page information at a certain frequency and display related web page snapshots according to keywords searched by users. The other is that the E-commerce transaction type website captures and stores the webpage information in real time during commodity transaction and displays the webpage snapshot during transaction at that time when needed.
However, the inventors have found that at least the following problems exist in the above two ways: after the web page snapshot is generated by adopting the two modes, the web page snapshot has the risk of being tampered, so that the information of the web page snapshot displayed to a user is inconsistent with the information generated when the web page snapshot is generated.
Disclosure of Invention
The invention provides a method and a device for generating a webpage snapshot.
In a first aspect, the present invention provides a method for generating a web page snapshot, including:
acquiring a webpage snapshot display request, wherein the webpage snapshot display request is used for requesting to display a snapshot of a first webpage, and the first webpage comprises at least one display area;
acquiring the identification of the block corresponding to each display area, wherein each block stores the display information of the corresponding display area;
and acquiring the display information in each block from a block chain database according to the identification of each block, and generating a snapshot corresponding to the first webpage.
Optionally, the block includes a block body, and display information of a display area corresponding to the block is stored in the block body;
the obtaining, according to the identifier of each block, display information in each block from a block chain database, and generating a snapshot corresponding to the first webpage includes:
acquiring display information stored in the block body of each block from a block chain database according to the identification of each block;
and merging the display information stored in the block body of each block according to the display mode corresponding to the first webpage to obtain the snapshot of the first webpage.
Optionally, the block further includes a block header, where the block header is used to indicate an effective time period corresponding to the display information, and the web page snapshot display request is specifically used to request to display a snapshot of the first web page at the first time;
the obtaining of the identifier of the block corresponding to each display area includes:
acquiring the identification of the block corresponding to each display area at the first moment;
merging the display information stored in the block blocks of the blocks according to the display mode corresponding to the first webpage to obtain the snapshot of the first webpage, including:
and merging the display information stored in the block body of each block according to the block head of each block and the display mode corresponding to the first webpage to obtain the snapshot of the first webpage at the first moment.
Optionally, after obtaining the display information stored in the block body of each block from the block chain database according to the identifier of each block, the method further includes:
acquiring a block head of each block from a block chain database;
the merging the display information stored in the block body of each block according to the block head of each block and the display mode corresponding to the first webpage to obtain the snapshot of the first webpage at the first moment includes:
determining whether the storage content in the corresponding block body is the display information of the display area corresponding to the block at the first moment according to the effective time period indicated by the block head of each block;
if so, merging the display information stored in the block body of each block according to the display mode corresponding to the first webpage to obtain the snapshot of the first webpage at the first moment.
Optionally, the obtaining the identifier of the block corresponding to the distribution of each display area at the first time includes:
and acquiring the identification of the block corresponding to each display area at the first moment according to the stored association relationship, wherein the association relationship is used for indicating the identification of at least one block corresponding to each display area and the effective time period corresponding to each block.
Optionally, before the acquiring the request for displaying the web page snapshot, the method further includes:
acquiring a first storage request, wherein the first storage request is used for requesting to store display information of a first display area of the first webpage, and the first display area is one of the at least one display area;
applying for a block from a block chain database, and storing the display information of the first display area into a block body of the block.
Optionally, after acquiring the first storage request, the method further includes:
obtaining an effective time period corresponding to the display information of the first display area;
after applying for a block from the block chain database, the method further comprises:
storing information indicating the valid period into a block header of the block;
and storing the association relation between the first display area and the identification of the block and the valid time period.
Optionally, after acquiring the first storage request, the method further includes:
judging whether a second storage request is acquired within a preset time before the current moment, wherein the second storage request is the same as the first storage request;
if not, the application for a block from the block chain database is executed.
In a second aspect, the present invention provides an apparatus for generating a web page snapshot, including:
the system comprises a first acquisition module, a second acquisition module and a display module, wherein the first acquisition module is used for acquiring a webpage snapshot display request, the webpage snapshot display request is used for requesting to display a snapshot of a first webpage, and the first webpage comprises at least one display area;
the second obtaining module is used for obtaining the identification of the block corresponding to each display area, wherein each block stores the display information of the corresponding display area;
and the generating module is used for acquiring the display information in each block from a block chain database according to the identification of each block and generating a snapshot corresponding to the first webpage.
Optionally, the block includes a block body, and display information of a display area corresponding to the block is stored in the block body; the generation module is specifically configured to:
acquiring display information stored in the block body of each block from a block chain database according to the identification of each block;
and merging the display information stored in the block body of each block according to the display mode corresponding to the first webpage to obtain the snapshot of the first webpage.
Optionally, the block further includes a block header, where the block header is used to indicate an effective time period corresponding to the display information, and the web page snapshot display request is specifically used to request to display a snapshot of the first web page at the first time;
the second obtaining module is specifically configured to obtain an identifier of a block corresponding to each display area at the first time;
the generating module is specifically configured to merge the display information stored in the block blocks of each block according to the block header of each block and the display mode corresponding to the first webpage, so as to obtain a snapshot of the first webpage at the first time.
Optionally, the generating module is further configured to obtain a block header of each block from a block chain database; the generation module is specifically configured to:
determining whether the storage content in the corresponding block body is the display information of the display area corresponding to the block at the first moment according to the effective time period indicated by the block head of each block;
if so, merging the display information stored in the block body of each block according to the display mode corresponding to the first webpage to obtain the snapshot of the first webpage at the first moment.
Optionally, the second obtaining module is specifically configured to obtain, according to a stored association relationship, an identifier of a block corresponding to each display area at the first time, where the association relationship is used to indicate an identifier of at least one block corresponding to each display area and an effective time period corresponding to each block.
Optionally, the system further comprises a storage module;
the first obtaining module is further configured to obtain a first storage request, where the first storage request is used to request to store display information of a first display area of the first webpage, and the first display area is one of the at least one display area;
the storage module is used for applying for a block from a block chain database and storing the display information of the first display area into a block body of the block.
Optionally, the second obtaining module is further configured to obtain an effective time period corresponding to the display information of the first display area;
the storage module is further configured to:
storing information indicating the valid period into a block header of the block;
and storing the association relation between the first display area and the identification of the block and the valid time period.
Optionally, the storage module is further configured to:
judging whether a second storage request is acquired within a preset time before the current moment, wherein the second storage request is the same as the first storage request;
if not, the application for a block from the block chain database is executed.
In a third aspect, the present invention provides a device for generating a web page snapshot, including: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executes the computer-executable instructions stored in the memory, so that the at least one processor executes the method for generating the web page snapshot according to any one of the first aspect.
In a fourth aspect, the present invention provides a computer-readable storage medium, in which computer-executable instructions are stored, and when a processor executes the computer-executable instructions, the method for generating a web page snapshot according to any one of the first aspect is implemented.
The method includes the steps of obtaining a web page snapshot display request, wherein the web page snapshot display request is used for requesting to display a snapshot of a first web page, the first web page comprises at least one display area, obtaining identification of blocks corresponding to the display areas respectively, obtaining display information in the blocks from a block chain database according to the identification of the blocks, and generating the snapshot corresponding to the first web page; the webpage is stored in a partitioned mode by adopting a block chain technology, so that the generated webpage snapshot has the anti-tampering characteristic, and the authenticity of the webpage snapshot is ensured; furthermore, the method also reduces the waste of storage resources and improves the performance of the snapshot generating system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an architecture diagram of a web page snapshot generating system according to an embodiment of the present invention;
fig. 2 is a first flowchart of a method for generating a web page snapshot according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of first screen data of a webpage corresponding to a certain clothing item;
fig. 4 is a flowchart of a method for generating a web page snapshot according to an embodiment of the present invention;
FIG. 5 is a block diagram illustrating an embodiment of the present invention;
fig. 6 is a flowchart three of a method for generating a web page snapshot according to an embodiment of the present invention;
fig. 7 is an interaction flowchart of a method for generating a web page snapshot according to an embodiment of the present invention;
fig. 8 is a first schematic structural diagram of a device for generating a web page snapshot according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a device for generating a web page snapshot according to an embodiment of the present invention;
fig. 10 is a schematic hardware structure diagram of a device for generating a web page snapshot according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 1 is an architecture diagram of a web page snapshot generating system according to an embodiment of the present invention, and as shown in fig. 1, the web page snapshot generating system according to the embodiment of the present invention includes: the system comprises a terminal, a server, a snapshot device and a block chain database. The terminal device is an electronic device for a user to browse a webpage or perform e-commerce transaction, and includes but is not limited to: desktop computer, notebook computer, panel computer, cell-phone, intelligent wearing equipment etc.. Specifically, a client of a browser or an e-commerce platform may be installed on the terminal device, and a user may browse a web page through the browser, or perform e-commerce transaction through the client.
The server may be a web server or a server of an e-commerce platform. The block chain database is used for storing the webpage by adopting a block chain storage technology, the specific storage mode can be that the server can divide the display information in the webpage into different areas, when the display information of a certain area is changed, the webpage server can send the changed display information to the snapshot device, the snapshot device applies for a block from the block chain database, and the display information is stored in the block. The snapshot device is a device for generating a web page snapshot for a certain web page.
The following describes the generation process of the web page snapshot with reference to two specific application scenarios.
One possible application scenario is as follows: the server is a web page server, correspondingly, a web page browser is arranged on the terminal equipment, and a user can access the web page server through the web page browser to browse a web page. In the scene, when a user needs to check a webpage snapshot corresponding to a webpage in the process of browsing the webpage, the terminal equipment sends a snapshot display request to the snapshot device; the snapshot device can acquire each block storing the webpage display information from the block chain database, merge the display information stored in each block to obtain a snapshot of the webpage, and send the snapshot to the terminal device for display.
Another possible application scenario is: the background server of the server e-commerce platform corresponds to the terminal equipment, a client corresponding to the e-commerce platform is arranged on the terminal equipment, and a user can access the e-commerce platform through the client to realize e-commerce transaction. In the scene, when a user needs to check a snapshot of certain commodity information at a certain historical moment, the terminal equipment sends a snapshot display request to the snapshot device; the snapshot device can acquire each block storing the commodity display information corresponding to the historical moment from the block chain database, combine the display information stored in each block to obtain a webpage snapshot of the historical moment corresponding to the commodity, and send the snapshot to the terminal device for display.
The method for generating the web page snapshot provided by the embodiment of the invention can be executed by the snapshot device in fig. 1. It should be noted that the snapshot apparatus may be in the form of software and/or hardware. In some embodiments of the present invention, the snapshot device and/or the blockchain database may be provided separately from the server, in some embodiments, the snapshot device and/or the blockchain database may also be implemented centrally in the server, and in some embodiments, the snapshot device and/or the blockchain database may also be provided in the server of the search engine.
The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 2 is a flowchart of a method for generating a web page snapshot according to an embodiment of the present invention, where an execution main body of the embodiment is the snapshot apparatus in fig. 1. As shown in fig. 2, the method of this embodiment may include:
s201: the method comprises the steps of obtaining a webpage snapshot display request, wherein the webpage snapshot display request is used for requesting to display a snapshot of a first webpage, and the first webpage comprises at least one display area.
The first webpage can be any webpage which can be accessed by a user through a browser or an e-commerce platform.
In this embodiment, the web page is divided into different display areas, and the display information of the different display areas is pre-stored in different blocks by using a block chain storage technology.
The method for dividing different areas of the web page is not particularly limited in the present invention, and the method may be divided according to the classification of text blocks in the web page, or according to the change frequency of data in different areas of the web page, or of course, other area division methods may be adopted. Whatever partitioning method is used, the goals can be: and according to the divided display areas, when the block chain storage technology is adopted for block storage, the storage of repeated data can be reduced as much as possible.
The following description will be given by taking as an example a manner of dividing according to the change frequency of data of different areas in a web page: such as: e-commerce shows class page and can divide into first screen data and non-first screen data, in the first screen data, can divide into again according to data change frequency or cycle: a main picture list of the goods, introduction information of the goods name, promotion information, etc. The data are reasonably stored in blocks, so that storage resources can be better saved.
Taking clothing articles as an example, fig. 3 is a schematic diagram of the first screen data of a webpage corresponding to a certain clothing article, as shown in fig. 3, in the first screen data of a clothing display page, the change frequency of the main product figure list and the commodity name introduction information is low, and the change frequency of the promotion information, the size information and the color information is high. Therefore, an optional area division method may be that the commodity main map list and the commodity name profile information are stored in one block in the block chain as one display area, and the promotion information, the size information and the color information are respectively stored in different blocks in the block chain as separate display areas, so that the same content is stored only in one copy and occupies the storage space of one block chain, and storage resources are saved.
It should be noted that the above-mentioned area dividing method is only an example, and the present invention is not limited thereto. In addition, the presentation area in the embodiment of the present invention should be understood as a logical area, i.e., a logical area for presenting some data, which does not correspond to a physical area of a certain shape in a page. For example, the color information may correspond to a display area, and the size information may correspond to a display area.
In addition, the size of the display area in the embodiment of the present invention is not specifically limited, and may be optimized or refined into a reasonable size of the display area according to the business needs.
After the webpage is divided into areas according to business requirements, the display information of different display areas of the webpage can be stored in different blocks in the block chain database. In an alternative manner of storage, the storage may,
when the display information of a certain display area is changed, a block is newly generated for the display area, and the latest display information of the display area is stored into the newly generated block. So that each change information for each presentation area can be stored in the blockchain database.
After the block chain database stores the web pages in blocks, with reference to fig. 1, a user browses the web pages or the e-commerce platform through terminal equipment, and when the user needs to access a snapshot of a certain web page, the terminal equipment can directly send a web page snapshot display request to the snapshot device. Certainly, the terminal device may also send a web page snapshot display request to the server, and the server forwards the web page snapshot display request to the snapshot apparatus.
S202: and acquiring the identification of the block corresponding to each display area, wherein each block stores the display information of the corresponding display area.
After receiving a web page snapshot display request, the snapshot device acquires the identification of the block corresponding to each display area according to at least one display area included in a requested first web page. Wherein the block is a block in a block chain database, and the block stores the display information of the corresponding display area. That is, through S202, it can be determined in which blocks in the block chain the presentation information of each presentation area of the first web page is stored.
The identification of the block corresponding to each display area may be obtained in various ways, and this embodiment is not limited in particular. In an optional implementation manner, the identifier of the block corresponding to each display area may be obtained according to a correspondence relationship between each display area and the identifier of each block, which is stored in advance in the snapshot apparatus.
S203: and acquiring the display information in each block from a block chain database according to the identification of each block, and generating a snapshot corresponding to the first webpage.
In this embodiment, after obtaining the identifier of the block corresponding to each display area, the snapshot apparatus may obtain the display information in each block from the block chain database, and generate the snapshot corresponding to the first webpage.
During specific implementation, acquiring display information stored in the block body of each block from a block chain database according to the identification of each block; and merging the display information stored in each block according to the display mode corresponding to the first webpage to obtain a snapshot of the first webpage.
The display mode corresponding to the first web page may be, for example, position information of different display areas in the web page, that is, the display information stored in the blocks corresponding to the display areas is merged according to the position information of the display areas in the web page to obtain a snapshot of the first web page.
For example, referring to fig. 3, assuming that the commodity main map list and the commodity name profile information are the first display area, the promotion information is the second display area, the color information is the third display area, and the size information is the fourth display area, after the display information of each display area is obtained from the blocks corresponding to the four display areas in the block chain database, the obtained display information of the four display areas may be merged according to the position information between the display areas shown in fig. 3, and the web page snapshot shown in fig. 3 is obtained by restoring.
The embodiment is different from the prior art in that the webpage information is captured aperiodically or in real time to generate and store the webpage snapshots, but the data in the webpage is divided into different display areas, the display information of each area is stored in different blocks of the block chain database in advance, and when the webpage snapshots need to be displayed, the display information corresponding to each display area is obtained from the block chain database and merged, and the snapshots corresponding to the webpage are obtained by restoration. On one hand, due to the decentralized storage mode of the block chain technology, the webpage snapshot generated by the embodiment has the tamper-proof characteristic, and the authenticity of the webpage snapshot is ensured; on the other hand, in the embodiment, when the web page data is stored in the partitioned area, only one copy of the same content is stored, that is, the same content occupies a block chain storage space, which reduces the waste of storage resources and improves the performance of the snapshot generating system compared with the prior art in which a large number of repeated web page snapshots need to be stored.
The method for generating the web page snapshot, provided by the embodiment of the invention, includes the steps of obtaining a web page snapshot display request, wherein the web page snapshot display request is used for requesting to display a snapshot of a first web page, the first web page comprises at least one display area, obtaining an identifier of a block corresponding to each display area, obtaining display information in each block from a block chain database according to the identifier of each block, and generating the snapshot corresponding to the first web page; the webpage is stored in a partitioned mode by adopting a block chain technology, so that the generated webpage snapshot has the anti-tampering characteristic, and the authenticity of the webpage snapshot is ensured; furthermore, the method also reduces the waste of storage resources and improves the performance of the snapshot generating system.
The above embodiment may be applied to the first application scenario corresponding to fig. 1, and when the terminal device requests to display the web page snapshot, it is not necessary to specify the time corresponding to the web page snapshot, for example: after a user retrieves a keyword through a search engine, the user requests to open a scene of a certain web page snapshot, and generally the web page snapshot is a web page snapshot after the web page is updated for the last time.
In some scenarios, for example, in the second application scenario corresponding to fig. 1, when the terminal device requests to display a web snapshot, it may request to display a web snapshot corresponding to a certain historical time, for example: the user wants to inquire the commodity webpage snapshot corresponding to the order placing time of the E-commerce platform, and in the scene, the webpage snapshot requested to be displayed by the terminal equipment is not the latest information of the webpage but the information corresponding to a certain historical time. For this scenario, the following is a detailed description of two aspects from web page storage and web page snapshot generation, respectively.
The process of storing a web page using blockchain techniques is described in detail below with reference to a specific embodiment.
Fig. 4 is a second flowchart of a method for generating a web page snapshot according to an embodiment of the present invention, as shown in fig. 4, the method according to the embodiment may include:
s401: and acquiring a first storage request, wherein the first storage request is used for requesting to store the display information of the first display area of the first webpage.
The first webpage may include at least one display area, and the first display area is one of the at least one display area.
Specifically, with reference to fig. 1, when the information of the web page is changed by the web page server or the e-commerce platform server, a first storage request is sent to the snapshot apparatus, where the first storage request is used to request to store the display information of the first display area of the web page.
Optionally, in this embodiment, after S401, the method may further include: and judging whether a second storage request is acquired within a preset time length before the current moment, wherein the second storage request is the same as the first storage request.
The second storage request is the same as the first storage request, that is, the second storage request and the first storage request both request to store the display information of the first display area of the first webpage, and the display information requested to be stored by the second storage request and the display information requested to be stored by the first storage request are the same. For example, referring to fig. 3, if the size information of the current webpage is "size 1 and size 2", the first storage request is used to request that the size information of the webpage is set to "size 3 and size 4", and the second storage request is used to request that the size information of the webpage is also set to "size 3 and size 4", it means that the first storage request and the second storage request are the same.
It can be understood that, in actual operation, the same webpage may be cooperatively maintained by multiple people, and therefore, the same storage request may be received twice or more times for the presentation information of the same presentation area within a preset time period. Therefore, in this embodiment, after receiving the first storage request, the deduplication determination is performed on the first storage request, and if the same second storage request has been received before, the first storage request is no longer processed. If the same second storage request has not been received before, the following process continues.
It should be noted that, in the embodiment of the present invention, the preset time period is not specifically limited, and may be set according to actual situations.
S402: and obtaining an effective time period corresponding to the display information of the first display area.
S403: applying for a block from a block chain database, storing the display information of the first display area into a block body of the block, and storing information for indicating the valid time period into a block header of the block.
It should be noted that, in the embodiment of the present invention, specific information stored in the block header is not specifically limited, as long as the stored information in the block header can be used to indicate a valid time period corresponding to the presentation information. In an optional implementation manner, the valid time period corresponding to the presentation information may be directly written into the block header; in another optional implementation manner, a preset character string may be further stored in the block header, and a correspondence between the preset character string and the valid time period is recorded in the snapshot apparatus. Of course, other ways to indicate the valid period in the block header may also be used, which are not listed here.
S404: and storing the association relation between the first display area and the identification of the block and the valid time period.
Specifically, after the snapshot device obtains the first storage request, the snapshot device may further obtain an effective time period corresponding to the display information requested to be stored. The present invention is not limited to the embodiment, which is a representative manner of the valid time period. For example, the valid time period corresponding to the presentation information may be represented by a start presentation time, may also be represented by an end presentation time, and may also be represented by a start presentation time and an end presentation time. Assuming that the color information in fig. 3 is updated to red at 9:00 and is updated to blue at 10:00, the starting presentation time and the ending presentation time corresponding to the color information being red are 9:00 and 10:00, respectively.
Furthermore, the snapshot apparatus may apply for a block from the block chain database, and fig. 5 is a schematic structural diagram of a block according to an embodiment of the present invention, as shown in fig. 5, where the block includes a block header and a block body. In an alternative embodiment, as shown in fig. 5, the presentation information of the first presentation area may be stored in the block body of the block, and the valid time period corresponding to the presentation information of the first presentation area may be stored in the block header of the block.
Optionally, the block header may further include: merkle Tree (Merkle Tree) root hash of the previous block, Merkle Tree root hash of the present block, timestamp, etc. The information in the block header may be obtained according to the definition of the existing block chaining technology, which is not described in detail in the embodiment of the present invention.
Through the above process, the data updated for each time for different areas of the web page can be stored in different blocks of the block chain database. For example, in conjunction with the web page structure shown in fig. 3, it is assumed that the snapshot apparatus acquires a storage request at 9:00 to request to update the color information to "color 1", so that a block 1 is generated in the blockchain database, and the block of the block 1 stores "color 1"; acquiring a storage request again at 10:00 for requesting to update the color information to be "color 2", so that a block 2 is generated in the block chain database, and the block body of the block 2 stores "color 2"; a third storage request is obtained at 11:00 to request that the color information of the web page be updated to "color 3", and therefore, a tile 3 is generated in the blockchain database, and the color 3 is stored in the block body of the tile 3. To this end, tile 1, tile 2, and tile 3 in the blockchain database store 3 times more cases of the color information of the web page.
Further, after the snapshot apparatus stores the display information of the first display area in the new block, the first display area may be associated with the new block, and the association relationship may further record an effective time period corresponding to the display information stored in the new block. In this way, when the snapshot apparatus needs to display a snapshot at a certain historical time, the display information of the first display area at the historical time may be obtained from the block associated with the first display area corresponding to the historical time according to the association relationship.
Based on the embodiment shown in fig. 4, the following describes a generation process of a web page snapshot in detail with reference to a specific embodiment.
Fig. 6 is a flowchart of a third method for generating a web page snapshot according to an embodiment of the present invention, as shown in fig. 6, the method according to the embodiment may include:
s601: the method comprises the steps of obtaining a webpage snapshot display request, wherein the webpage snapshot display request is specifically used for requesting to display a snapshot of a first webpage at a first moment.
S602: and acquiring the identification of the block corresponding to each display area at the first moment.
The first time is a certain historical time before the current time, that is, the user may request to display a snapshot of the certain historical time before the current time through the terminal device.
It can be understood that, if the terminal device requests to display the snapshot of the first web page at a certain historical time, the snapshot apparatus needs to respectively obtain the display information corresponding to each display area of the first web page at the historical time.
In an optional implementation manner, the snapshot apparatus may obtain, according to a stored association relationship, an identifier of a block corresponding to each of the display areas at the historical time, where the association relationship is used to indicate the identifier of at least one block corresponding to each of the display areas and an effective time period corresponding to each of the blocks.
S603: and acquiring the display information stored in the block body of each block from a block chain database according to the identification of each block, and acquiring the block head of each block.
S604: and determining whether the storage content in the corresponding block is the display information of the display area corresponding to the block at the first moment according to the effective time period indicated by the block head of each block.
S605: if so, merging the display information stored in the block body of each block according to the display mode corresponding to the first webpage to obtain the snapshot of the first webpage at the first moment.
The specific implementation process of S603 to S605 in this embodiment can refer to the embodiment shown in fig. 2, and this embodiment is not described in detail. Unlike the embodiment shown in fig. 2, in this embodiment, the valid time period corresponding to the presentation information is obtained from the block header of each block while the presentation information is obtained from the block body of each block. And further, whether the display information stored in the corresponding block is the display information at the first moment can be further confirmed according to the valid time period. Through the process of verifying the display information in the block according to the effective time period indicated by the block header, the accuracy of the generated webpage snapshot can be further improved.
According to the method for generating the web page snapshot, a web page snapshot display request is obtained, the web page snapshot display request is used for requesting to display a snapshot of a first web page at a first moment, the first web page comprises at least one display area, identification of blocks corresponding to the display areas at the first moment is obtained, display information in the blocks is obtained from a block chain database according to the identification of the blocks, the snapshot of the first web page at the first moment is generated, and the snapshot of the web page at a certain historical moment is obtained; the webpage is stored in a partitioned mode by adopting a block chain technology, so that the generated webpage snapshot has the anti-tampering characteristic, and the authenticity of the webpage snapshot is ensured; furthermore, the method also reduces the waste of storage resources and improves the performance of the snapshot generating system.
Fig. 7 is an interaction flowchart of a method for generating a web page snapshot according to an embodiment of the present invention, and as shown in fig. 7, the method according to the embodiment includes:
s701: the server sends a storage request to the snapshot device, wherein the storage request is used for requesting to store the display information of the first display area of the first webpage.
S702: and the snapshot device acquires the effective time period corresponding to the display information of the first display area.
S703: the snapshot device applies for a block from a block chain database, stores the display information of the first display area into a block body of the block, and stores information indicating the valid time period into a block header of the block.
S704: the snapshot device stores the association relationship between the first display area and the identification of the block and the valid time period.
S705: the method comprises the steps that terminal equipment sends a webpage snapshot display request to a snapshot device, wherein the webpage snapshot display request is used for requesting to display a snapshot of a first webpage at a first moment.
S706: and the snapshot device acquires the identification of the block corresponding to each display area at the first moment according to the stored association relation.
S707: the snapshot device obtains the display information stored in the block body of each block from the block chain database according to the identifier of each block, and obtains the block header of each block from the block chain database.
S708: the snapshot device determines whether the storage content in the corresponding block body is the display information of the display area corresponding to the block at the first moment according to the effective time period indicated by the block head of each block.
S709: if so, the snapshot device merges the display information stored in the block body of each block according to the display mode corresponding to the first webpage to obtain the snapshot of the first webpage at the first moment.
S710: and the snapshot device sends the snapshot of the first webpage at the first moment to the terminal equipment for displaying.
The specific implementation manner of this embodiment is similar to that of the embodiment shown in fig. 4 and fig. 6, and is not described herein again.
Fig. 8 is a schematic structural diagram of a device for generating a web page snapshot according to an embodiment of the present invention, as shown in fig. 8, a device 800 for generating a web page snapshot according to the embodiment includes: a first acquisition module 801, a second acquisition module 802 and a generation module 803.
The first obtaining module 801 is configured to obtain a web page snapshot display request, where the web page snapshot display request is used to request to display a snapshot of a first web page, and the first web page includes at least one display area.
A second obtaining module 802, configured to obtain an identifier of a block corresponding to each display area, where each block stores display information of a corresponding display area.
The generating module 803 is configured to obtain, according to the identifier of each block, display information in each block from a block chain database, and generate a snapshot corresponding to the first webpage.
The apparatus of this embodiment may be used to implement the method embodiment shown in fig. 2, and the implementation principle and technical effect are similar, which are not described herein again.
Fig. 9 is a schematic structural diagram of a device for generating a web page snapshot according to an embodiment of the present invention, as shown in fig. 9, on the basis of the embodiment shown in fig. 8, the device of the present embodiment further includes: a storage module 804.
Optionally, the block includes a block body, and display information of a display area corresponding to the block is stored in the block body; the generating module 803 is specifically configured to: acquiring display information stored in the block body of each block from a block chain database according to the identification of each block; and merging the display information stored in the block body of each block according to the display mode corresponding to the first webpage to obtain the snapshot of the first webpage.
Optionally, the block further includes a block header, where the block header is used to indicate an effective time period corresponding to the display information, and the web page snapshot display request is specifically used to request to display a snapshot of the first web page at the first time; the second obtaining module 802 is specifically configured to obtain identifiers of blocks corresponding to the display areas at the first time; the generating module 803 is specifically configured to merge the display information stored in the block blocks of each block according to the block header of each block and the display mode corresponding to the first webpage, so as to obtain a snapshot of the first webpage at the first time.
Optionally, the generating module 803 is further configured to obtain a block header of each block from a block chain database; the generating module 803 is specifically configured to: determining whether the storage content in the corresponding block body is the display information of the display area corresponding to the block at the first moment according to the effective time period indicated by the block head of each block; if so, merging the display information stored in the block body of each block according to the display mode corresponding to the first webpage to obtain the snapshot of the first webpage at the first moment.
Optionally, the second obtaining module 802 is specifically configured to obtain, according to a stored association relationship, an identifier of a block corresponding to each display area at the first time, where the association relationship is used to indicate an identifier of at least one block corresponding to each display area and an effective time period corresponding to each block.
Optionally, the first obtaining module 801 is further configured to obtain a first storage request, where the first storage request is used to request to store display information of a first display area of the first webpage, and the first display area is one of the at least one display area; the storage module 804 is configured to apply for a block from a block chain database, and store the display information of the first display area in a block body of the block.
Optionally, the second obtaining module 802 is further configured to obtain an effective time period corresponding to the display information of the first display area; the storage module 804 is further configured to: storing information indicating the valid period into a block header of the block; and storing the association relation between the first display area and the identification of the block and the valid time period.
Optionally, the storage module 804 is further configured to: judging whether a second storage request is acquired within a preset time before the current moment, wherein the second storage request is the same as the first storage request; if not, the application for a block from the block chain database is executed.
The apparatus of the present embodiment may be used to implement the method embodiments shown in fig. 4 to fig. 7, which have similar implementation principles and technical effects, and are not described herein again.
Fig. 10 is a schematic hardware structure diagram of a device for generating a web page snapshot according to an embodiment of the present invention. As shown in fig. 10, the apparatus 1000 for generating a web page snapshot provided in this embodiment includes: at least one processor 1001 and memory 1002. The web page snapshot generating apparatus 1000 further includes a communication section 1003. The processor 1001, the memory 1002, and the communication unit 1003 are connected by a bus 1004.
In a specific implementation process, the at least one processor 1001 executes the computer-executable instructions stored in the memory 1002, so that the at least one processor 1001 executes the method for generating the web page snapshot in any one of the method embodiments. The communication unit 1003 is used for communicating with a terminal device and/or a server.
For a specific implementation process of the processor 1001, reference may be made to the above method embodiments, which have similar implementation principles and technical effects, and details of this embodiment are not described herein again.
In the embodiment shown in fig. 10, it should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose processors, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.
The memory may comprise high speed RAM memory and may also include non-volatile storage NVM, such as at least one disk memory.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer execution instruction is stored in the computer-readable storage medium, and when a processor executes the computer execution instruction, the method for generating a web page snapshot in any of the above method embodiments is implemented.
The computer-readable storage medium described above may be implemented by any type of volatile or non-volatile memory device or combination thereof, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk. Readable storage media can be any available media that can be accessed by a general purpose or special purpose computer.
An exemplary readable storage medium is coupled to the processor such the processor can read information from, and write information to, the readable storage medium. Of course, the readable storage medium may also be an integral part of the processor. The processor and the readable storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the readable storage medium may also reside as discrete components in the apparatus.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (14)
1. A method for generating a web page snapshot is characterized by comprising the following steps:
acquiring a webpage snapshot display request, wherein the webpage snapshot display request is used for requesting to display a snapshot of a first webpage, and the first webpage comprises at least one display area;
acquiring the identification of the block corresponding to each display area, wherein each block stores the display information of the corresponding display area;
acquiring display information in each block from a block chain database according to the identification of each block, and generating a snapshot corresponding to the first webpage;
the block comprises a block body, and display information of a display area corresponding to the block is stored in the block body; the block further comprises a block header, wherein the block header is used for indicating an effective time period corresponding to the display information, and the webpage snapshot display request is specifically used for requesting to display a snapshot of a first webpage at a first moment;
the obtaining of the identifier of the block corresponding to each display area includes:
acquiring the identification of the block corresponding to each display area at the first moment;
the obtaining, according to the identifier of each block, display information in each block from a block chain database, and generating a snapshot corresponding to the first webpage includes:
acquiring display information stored in the block body of each block from a block chain database according to the identification of each block;
and merging the display information stored in the block body of each block according to the block head of each block and the display mode corresponding to the first webpage to obtain the snapshot of the first webpage at the first moment.
2. The method of claim 1, wherein after obtaining the presentation information stored in the block body of each block from the block chain database according to the identifier of each block, the method further comprises:
acquiring a block head of each block from a block chain database;
the merging the display information stored in the block body of each block according to the block head of each block and the display mode corresponding to the first webpage to obtain the snapshot of the first webpage at the first moment includes:
determining whether the storage content in the corresponding block body is the display information of the display area corresponding to the block at the first moment according to the effective time period indicated by the block head of each block;
if so, merging the display information stored in the block body of each block according to the display mode corresponding to the first webpage to obtain the snapshot of the first webpage at the first moment.
3. The method according to claim 1, wherein the obtaining the identifier of the block corresponding to the distribution of each display area at the first time comprises:
and acquiring the identification of the block corresponding to each display area at the first moment according to the stored association relationship, wherein the association relationship is used for indicating the identification of at least one block corresponding to each display area and the effective time period corresponding to each block.
4. The method of claim 1, wherein before the obtaining the request for displaying the web page snapshot, the method further comprises:
acquiring a first storage request, wherein the first storage request is used for requesting to store display information of a first display area of the first webpage, and the first display area is one of the at least one display area;
applying for a block from a block chain database, and storing the display information of the first display area into a block body of the block.
5. The method of claim 4, wherein after the obtaining the first storage request, further comprising:
obtaining an effective time period corresponding to the display information of the first display area;
after applying for a block from the block chain database, the method further comprises:
storing information indicating the valid period into a block header of the block;
and storing the association relation between the first display area and the identification of the block and the valid time period.
6. The method of claim 4, wherein after the obtaining the first storage request, further comprising:
judging whether a second storage request is acquired within a preset time before the current moment, wherein the second storage request is the same as the first storage request;
if not, the application for a block from the block chain database is executed.
7. An apparatus for generating a web page snapshot, comprising:
the system comprises a first acquisition module, a second acquisition module and a display module, wherein the first acquisition module is used for acquiring a webpage snapshot display request, the webpage snapshot display request is used for requesting to display a snapshot of a first webpage, and the first webpage comprises at least one display area;
the second obtaining module is used for obtaining the identification of the block corresponding to each display area, wherein each block stores the display information of the corresponding display area;
the generating module is used for acquiring the display information in each block from a block chain database according to the identification of each block and generating a snapshot corresponding to the first webpage;
the block comprises a block body, and display information of a display area corresponding to the block is stored in the block body; the block further comprises a block header, wherein the block header is used for indicating an effective time period corresponding to the display information, and the webpage snapshot display request is specifically used for requesting to display a snapshot of a first webpage at a first moment;
the second obtaining module is specifically configured to obtain an identifier of a block corresponding to each display area at the first time;
the generation module is specifically configured to:
acquiring display information stored in the block body of each block from a block chain database according to the identification of each block;
and merging the display information stored in the block body of each block according to the block head of each block and the display mode corresponding to the first webpage to obtain the snapshot of the first webpage at the first moment.
8. The apparatus of claim 7, wherein the generating module is further configured to obtain a block header of each block from a block chain database; the generation module is specifically configured to:
determining whether the storage content in the corresponding block body is the display information of the display area corresponding to the block at the first moment according to the effective time period indicated by the block head of each block;
if so, merging the display information stored in the block body of each block according to the display mode corresponding to the first webpage to obtain the snapshot of the first webpage at the first moment.
9. The apparatus according to claim 7, wherein the second obtaining module is specifically configured to obtain, according to a stored association relationship, an identifier of a block corresponding to each of the display areas at the first time, where the association relationship is used to indicate an identifier of at least one block corresponding to each of the display areas and an effective time period corresponding to each of the blocks.
10. The apparatus of claim 7, further comprising a storage module;
the first obtaining module is further configured to obtain a first storage request, where the first storage request is used to request to store display information of a first display area of the first webpage, and the first display area is one of the at least one display area;
the storage module is used for applying for a block from a block chain database and storing the display information of the first display area into a block body of the block.
11. The apparatus of claim 10,
the second obtaining module is further configured to obtain an effective time period corresponding to the display information of the first display area;
the storage module is further configured to:
storing information indicating the valid period into a block header of the block;
and storing the association relation between the first display area and the identification of the block and the valid time period.
12. The apparatus of claim 10, wherein the storage module is further configured to:
judging whether a second storage request is acquired within a preset time before the current moment, wherein the second storage request is the same as the first storage request;
if not, the application for a block from the block chain database is executed.
13. A web page snapshot generating apparatus, comprising: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the method for generating a web page snapshot of any one of claims 1-6.
14. A computer-readable storage medium, wherein a computer-executable instruction is stored in the computer-readable storage medium, and when a processor executes the computer-executable instruction, the method for generating a web page snapshot according to any one of claims 1 to 6 is implemented.
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