CN106897052B - APK file compression method and device - Google Patents
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000006835 compression Effects 0.000 title claims description 60
- 238000007906 compression Methods 0.000 title claims description 60
- 238000012545 processing Methods 0.000 claims abstract description 16
- 230000006837 decompression Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004590 computer program Methods 0.000 description 2
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- 238000004891 communication Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
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Abstract
The invention provides a method and a device for compressing an APK file, wherein the method comprises the following steps: acquiring a packaged file to be pushed to a client, wherein the packaged file is a plurality of APK files and/or increment upgrade packages; uniformly processing all the acquired files, and merging the files to obtain merged data; compressing the merged data to generate a new compressed file and storing the new compressed file in a cloud server; when a downloading request or an upgrading request message sent by a client is received, the new compressed file is provided for the client; the data volume of the compressed APK file is smaller, so that a user can save certain download flow when downloading the APK file and the APK incremental data packet, the download waiting time is shortened, and the download efficiency is improved.
Description
Technical Field
The invention relates to the technical field of network communication, in particular to an APK file compression method and device.
Background
Various software installed in the smart phone is downloaded and installed through an application store, a browser and the like. When a user downloads or upgrades an application, there are often situations that all applications belonging to the same series need to be downloaded or updated, for example, an office series of APKs, or a plurality of applications launched by the same company, and at this time, the user needs to download all applications of the same series one by one and then install them, so that the user needs to consume more mobile phone traffic and wait for a longer time, thereby reducing the downloading efficiency.
Disclosure of Invention
In view of the above, the present invention is proposed to provide an APK file compression method and apparatus that overcomes the above problems or at least partially solves or alleviates the above problems.
According to an aspect of the present invention, there is provided an APK file compression method, including:
acquiring a packaged file to be pushed to a client, wherein the packaged file is a plurality of APK files and/or increment upgrade packages;
uniformly processing all the acquired files, and merging the files to obtain merged data;
compressing the merged data to generate a new compressed file and storing the new compressed file in a cloud server;
and when a downloading request or an upgrading request message sent by a client is received, providing the new compressed file to the client.
Further, still include:
and after the information is stored in the cloud server, the pushing information of software installation or upgrading is sent to the client.
Further, the merging all the acquired files includes:
identifying the content format of each file;
merging the decompressed data with the same content format into a unit to be compressed;
wherein the merged data includes at least one of the units to be compressed.
Further, the compressing the merged data to generate new compressed data includes:
selecting a corresponding compression algorithm according to the content format of the file contained in the unit to be compressed;
compressing the unit to be compressed according to the selected compression algorithm to generate compressed data corresponding to the unit to be compressed;
wherein the new compressed data includes packed data of all APKs included in the merged data.
Further, still include:
extracting metadata information in a packaged file containing all APKs;
repackaging the metadata information and the new compressed data into a compressed file.
Further, the metadata information includes: directory information and header information of the packaged files containing all APKs.
Further, still include:
acquiring compression parameters of the new compressed file during compression;
and storing the compression parameters into the metadata information so as to decompress the new compressed file according to the compression parameters in the metadata information.
Further, still include:
and comparing the high-version software installation package with the current software installation package in advance, calculating a difference file between the high-version software installation package and the current software installation package by adopting a preset algorithm, and generating an increment upgrading package aiming at the high-version software installation package.
According to another aspect of the present invention, there is provided an APK file compression apparatus, including:
the system comprises an acquisition module, a processing module and a display module, wherein the acquisition module is used for acquiring a packaged file to be pushed to a client, and the packaged file is a plurality of APK files and/or increment upgrade packages;
the merging module is used for uniformly processing all the acquired files and merging the acquired files to obtain merged data;
the compression module is used for compressing the merged data to generate a new compressed file and storing the new compressed file in the cloud server;
and the file providing module is used for providing the new compressed file to the client when receiving a downloading request or an upgrading request message sent by the client.
Further, still include:
and the message sending module is used for sending push information of software installation or upgrading to the client after the message is stored in the cloud server.
Further, the merging module is further configured to identify a content format of each file; merging the decompressed data with the same content format into a unit to be compressed; wherein the merged data includes at least one of the units to be compressed.
Further, the compression module is further configured to select a corresponding compression algorithm according to a content format of a file included in the unit to be compressed; compressing the unit to be compressed according to the selected compression algorithm to generate compressed data corresponding to the unit to be compressed; wherein the new compressed data includes packed data of all APKs included in the merged data.
Further, the compression module is also used for extracting metadata information in the packaged file containing all APKs;
repackaging the metadata information and the new compressed data into a compressed file.
Further, the metadata information includes: directory information and header information of the packaged files containing all APKs.
Further, the compression module is further configured to obtain compression parameters of the new compressed file during compression; and storing the compression parameters into the metadata information so as to decompress the new compressed file according to the compression parameters in the metadata information.
Further, the obtaining module is further configured to compare the high-version software installation package with the current software installation package in advance, calculate a difference file between the high-version software installation package and the current software installation package by using a predetermined algorithm, and generate an incremental upgrade package for the high-version software installation package.
The invention has the beneficial effects that:
the data volume of the compressed APK file is smaller, so that a user can save certain downloading flow when downloading the APK file and the APK incremental data packet, the downloading waiting time is shortened, and the downloading efficiency is improved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic flow diagram of an embodiment of the method of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of the apparatus of the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The invention is further described with reference to the following figures and detailed description of embodiments.
First, the method according to the embodiment of the present invention will be described in detail with reference to fig. 1.
As shown in fig. 1, fig. 1 is a schematic flowchart of a method according to an embodiment of the present invention, where an execution subject of the method provided in this embodiment may be a file processing apparatus, and the apparatus may specifically be a server device, such as a cloud device, and the method may specifically include the following steps:
step 101: the cloud server acquires a packed file to be pushed to a client; the packaging file is a plurality of APKs and/or APK increment upgrade packages;
specifically, APK is an abbreviation of Android package, namely, Android installation package (APK). APK is a file format like Symbian Sis or Sisx. The APK file is directly transmitted to the Android simulator or the Android mobile phone to be executed, and then installation can be carried out. The APK file is the same as sis, and the project compiled by android sdk is packaged into an installer file with the format of APK.
When a user downloads or upgrades an application, there are often situations that all applications belonging to the same series need to be downloaded or updated, for example, an office series of APKs, or a plurality of associated applications launched by the same company, and therefore, a packaged file acquired by the cloud server and needing to be pushed to the client may be a software installation package of a plurality of APKs, or a plurality of APK incremental upgrade packages, or a software installation package of at least one APK and at least one APK incremental data package;
the generation process of the APK incremental data packet comprises the following steps: the method comprises the steps of comparing a high-version software installation package with a current software installation package in advance, calculating a difference file between the high-version software installation package and the current software installation package by adopting a preset algorithm (such as a difference algorithm), and generating an APK increment upgrading package aiming at the high-version software installation package.
In the embodiment of the method of the present invention, the client may be any terminal device, such as a mobile phone, an ipad, and the like, which is available for a user to use and can install various application software. The cloud server has data storage and processing functions, for example, a plurality of APKs and APK increment upgrade packages are stored in data of the cloud server, and can actively push software installation messages or upgrade messages to the client, and also can provide corresponding APKs and APK increment upgrade packages to the client according to download request messages or upgrade messages of the client.
Step 102: uniformly processing all the acquired files, and merging the files to obtain merged data;
specifically, if an APK software installation package or an APK incremental data package is in a compressed format, decompression needs to be performed by using a passed decompression algorithm before merging, and each APK software installation package or APK incremental data package obtains a corresponding group of files after decompression; if an APK software installation package or APK delta data package itself is in an uncompressed format, no processing is required.
And for all the files in the non-compressed format (including all the groups of files subjected to the decompression processing), identifying the content format of each file, and combining the decompressed data with the same content format into a unit to be compressed, wherein the identification of the content format can be realized by identifying the file extension and the file header. The method for identifying the file extension is high in identification speed, but the accuracy is lower than that of the method for identifying the file header. For example, the extensions are.zip and.jar are both zip formats. The header is the PK beginning and the representation is in zip format. All formats may employ lzma2/lzma as the compression algorithm. And after the format content is identified, merging processing is carried out to obtain a merged data packet, wherein the merged data packet comprises at least one unit to be compressed. For example, the application installation package contains two content formats of decompressed data, one is in a zip format; the other is a PNG (Portable Network graphics) format.
Step 103: compressing the merged data to generate a new compressed file and storing the new compressed file in a cloud server;
specifically, according to the content format of the file included in the unit to be compressed, a corresponding compression algorithm is selected, and according to the selected compression algorithm, the unit to be compressed is compressed to generate compressed data corresponding to the unit to be compressed, that is, new compressed data, where the new compressed data includes packed data of all APKs included in the merged data. Wherein the process of compressing comprises: extracting metadata information in all APK files or APK incremental data packets, sorting and combining a plurality of metadata information, and then compressing the metadata information and the combined data again to generate a new compressed file, wherein the metadata information comprises: directory information and file header information, wherein the directory information mainly records the position of each file before merging, each file corresponds to one file header information, and the file header information is mainly used for distinguishing other files.
In addition, the compression parameters of the new compressed file during compression can be acquired during the compression processing; and saving the compression parameters into the metadata information so as to decompress the new compressed file according to the compression parameters in the metadata information. This is because with existing decompression algorithms, the compressed data may be mostly solved completely (i.e., the content is identical), but some parts are unlikely to be recovered, just as the original packet is. Although there is no effect from the operating architecture, there is still a possibility of error. In order to ensure that the decompressed data decoded from the compressed data is completely the same as the original packet and that no error occurs, the embodiment of the present invention records the compression parameters of the new compressed data during compression by using the above process and stores the compression parameters into the metadata information.
Step 104: sending push information of software installation or upgrading to a client;
step 105: and when a downloading request or an upgrading request message sent by a client is received, providing the new compressed file to the client.
An embodiment of the apparatus of the present invention will be described in detail with reference to fig. 2.
As shown in fig. 2, fig. 2 is a schematic structural diagram of an embodiment of the apparatus of the present invention, which may specifically include:
an obtaining module 201, configured to obtain a packaged file to be pushed to a client, where the packaged file is a plurality of APK files and/or an incremental upgrade package; the obtaining module is further used for comparing the high-version software installation package with the current software installation package in advance, calculating a difference file between the high-version software installation package and the current software installation package by adopting a preset algorithm, and generating an increment upgrading package aiming at the high-version software installation package.
The merging module 202 is configured to uniformly process all the obtained files, and merge the obtained files to obtain merged data; specifically, the merging module 202 identifies the content format of each file; merging the decompressed data with the same content format into a unit to be compressed; the merged data includes at least one unit to be compressed.
The compression module 203 is configured to compress the merged data, generate a new compressed file, and store the new compressed file in the cloud server; specifically, the compression module 203 selects a corresponding compression algorithm according to the content format of the file contained in the unit to be compressed; compressing the unit to be compressed according to the selected compression algorithm to generate compressed data corresponding to the unit to be compressed; wherein the new compressed data includes packed data of all APKs included in the merged data.
The compression module 203 is further configured to extract metadata information in the packaged file containing all APKs; repackaging the metadata information and the new compressed data into a compressed file. And acquiring compression parameters of the new compressed file during compression; and storing the compression parameters into the metadata information so as to decompress the new compressed file according to the compression parameters in the metadata information. Wherein the metadata information includes: directory information and header information of the packaged files containing all APKs.
And the file providing module 204 is configured to, when a request download or upgrade message sent by the client is received, provide the new compressed file processed by the compression module 203 to the client.
As a preferred embodiment of the apparatus of the present invention, the apparatus may further include:
the message sending module 205 is configured to send, after being stored in the cloud server, push information of software installation or upgrade to the client.
It should be noted that, for the specific implementation process of the apparatus, the method has been described in detail, and thus is not described herein again.
In summary, embodiments of the present invention provide a method and an apparatus for compressing an APK file, where compared with the prior art, the data size of the compressed APK file is smaller, so that a user can save a certain download traffic when downloading the APK file and the APK incremental data packet, thereby shortening the download waiting time and improving the download efficiency.
The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
Reference herein to "one embodiment," "an embodiment," or "one or more embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. Moreover, it is noted that instances of the word "in one embodiment" are not necessarily all referring to the same embodiment.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Moreover, it should also be noted that the language used in the specification has been principally selected for readability and instructional purposes, and may not have been selected to delineate or circumscribe the inventive subject matter. Accordingly, many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the appended claims. The present invention has been disclosed in an illustrative rather than a restrictive sense, and the scope of the present invention is defined by the appended claims.
Claims (14)
1. A method for compressing APK files, comprising:
acquiring a packaged file to be pushed to a client, wherein the packaged file is a plurality of APK files and/or increment upgrade packages;
uniformly processing all the acquired files, and merging the files to obtain merged data; wherein, the content format of each file is identified; merging the decompressed data with the same content format into a unit to be compressed; wherein the merged data comprises at least one unit to be compressed; the processing includes decompression;
compressing the merged data to generate a new compressed file and storing the new compressed file in a cloud server;
and when a downloading request or an upgrading request message sent by a client is received, providing the new compressed file to the client.
2. The method of claim 1, further comprising:
and after the information is stored in the cloud server, the pushing information of software installation or upgrading is sent to the client.
3. The method according to claim 1, wherein the compressing the merged data to generate new compressed data comprises:
selecting a corresponding compression algorithm according to the content format of the file contained in the unit to be compressed;
compressing the unit to be compressed according to the selected compression algorithm to generate compressed data corresponding to the unit to be compressed;
wherein the new compressed data includes packed data of all APKs included in the merged data.
4. The method of claim 3, further comprising:
extracting metadata information in a packaged file containing all APKs;
repackaging the metadata information and the new compressed data into a compressed file.
5. The method of claim 4,
the metadata information includes: directory information and header information of the packaged files containing all APKs.
6. The method of any of claim 5, further comprising:
acquiring compression parameters of the new compressed file during compression;
and storing the compression parameters into the metadata information so as to decompress the new compressed file according to the compression parameters in the metadata information.
7. The method of claim 1, further comprising:
and comparing the high-version software installation package with the current software installation package in advance, calculating a difference file between the high-version software installation package and the current software installation package by adopting a preset algorithm, and generating an increment upgrading package aiming at the high-version software installation package.
8. An apparatus for APK file compression, comprising:
the system comprises an acquisition module, a processing module and a display module, wherein the acquisition module is used for acquiring a packaged file to be pushed to a client, and the packaged file is a plurality of APK files and/or increment upgrade packages;
the merging module is used for uniformly processing all the acquired files and merging the acquired files to obtain merged data; wherein, the content format of each file is identified; merging the decompressed data with the same content format into a unit to be compressed; wherein the merged data comprises at least one unit to be compressed; the processing includes decompression;
the compression module is used for compressing the merged data to generate a new compressed file and storing the new compressed file in the cloud server;
and the file providing module is used for providing the new compressed file to the client when receiving a downloading request or an upgrading request message sent by the client.
9. The apparatus of claim 8, further comprising:
and the message sending module is used for sending push information of software installation or upgrading to the client after the message is stored in the cloud server.
10. The apparatus according to claim 8, wherein the compression module is further configured to select a corresponding compression algorithm according to a content format of a file included in the unit to be compressed; compressing the unit to be compressed according to the selected compression algorithm to generate compressed data corresponding to the unit to be compressed; wherein the new compressed data includes packed data of all APKs included in the merged data.
11. The apparatus of claim 10, wherein the compression module is further configured to extract metadata information in a packaged file containing all APKs;
repackaging the metadata information and the new compressed data into a compressed file.
12. The apparatus of claim 11,
the metadata information includes: directory information and header information of the packaged files containing all APKs.
13. The apparatus of claim 11, wherein the compression module is further configured to obtain compression parameters of the new compressed file during compression; and storing the compression parameters into the metadata information so as to decompress the new compressed file according to the compression parameters in the metadata information.
14. The apparatus of claim 8, wherein the obtaining module is further configured to compare the high-version software installation package with the current software installation package in advance, calculate a difference file between the high-version software installation package and the current software installation package by using a predetermined algorithm, and generate an incremental upgrade package for the high-version software installation package.
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| CN107908404A (en) * | 2017-11-17 | 2018-04-13 | 深圳市泉眼网络科技有限公司 | program packaging method, system and terminal device |
| CN109120687B (en) * | 2018-08-09 | 2020-07-24 | 深圳市腾讯网络信息技术有限公司 | Data packet transmitting method, device, system, equipment and storage medium |
| CN111966647A (en) * | 2020-08-21 | 2020-11-20 | 苏州浪潮智能科技有限公司 | Cloud storage method and device for small files, server and storage medium |
| CN113794589B (en) * | 2021-08-31 | 2023-11-07 | 新华三技术有限公司成都分公司 | Packaging method of AC firmware, upgrading method of AP and AC |
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| US20070288556A1 (en) * | 2002-05-17 | 2007-12-13 | Anton Richard N | System and Method for Encoding and Decoding Data Files |
| CN1584875B (en) * | 2004-06-01 | 2011-08-10 | 北京九州软件有限公司 | Ergodic compressing and decompressing method for batched computer document |
| CN101478370B (en) * | 2009-01-20 | 2012-05-23 | 中兴通讯股份有限公司 | File compression method and apparatus based on file system |
| CN106445608A (en) * | 2010-01-27 | 2017-02-22 | 中兴通讯股份有限公司 | Software installation pack installing method and installing device |
| CN101984405A (en) * | 2010-10-11 | 2011-03-09 | 中兴通讯股份有限公司 | Method of software version upgrade and terminal and system |
| CN102375753B (en) * | 2011-10-08 | 2014-06-18 | 宇龙计算机通信科技(深圳)有限公司 | Mobile terminal application presetting method and mobile terminal |
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| CN103699408A (en) * | 2013-12-12 | 2014-04-02 | 乐视网信息技术（北京）股份有限公司 | Software updating method and equipment |
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