CN106844766A - The method and device of a kind of compressed file decompression - Google Patents

Abstract

The invention discloses a method for decompressing a compressed file. The network disk server obtains the file information of the file to be decompressed; the network disk server calls the decompression application programming interface to perform the decompression operation on the above-mentioned file to be decompressed according to the above file information, and obtains unzip files. By obtaining the file information of the file to be decompressed, the above-mentioned file to be decompressed is stored on the above-mentioned network disk server, and the above-mentioned network disk server can decompress the file to be decompressed by calling the decompression application programming interface, so as to realize the decompression operation on the network disk server. Unzip the compressed file on . In addition, the invention also discloses a device for decompressing compressed files, which has the advantages of one-to-one correspondence with the above method.

Description

Method and device for decompressing compressed files

technical field

The invention relates to the field of cloud storage, in particular to a method and device for decompressing compressed files.

Background technique

With the continuous development of network technology and cloud technology, the application of cloud technology is becoming more and more extensive.

Cloud storage is one of the applications of cloud technology, which can store files to the network disk server, that is, users can upload various files or data to the cloud server for corresponding storage. Cloud storage can ensure that files will never be lost, and data synchronization can also be performed. There are various kinds of files stored in the cloud, including compressed files, such as Zip compressed files. After storing the compressed file on the network disk server, the user may need to view the compressed file, and further, may also need to decompress the compressed file for subsequent operations.

However, in the prior art, the compressed file cannot be decompressed on the network disk server, so how to decompress the compressed file on the network disk server is an urgent problem in the art.

Contents of the invention

The purpose of the present invention is to provide a method and device for decompressing compressed files, aiming to solve the problem that the network disk server cannot decompress compressed files in the prior art.

In order to solve the above-mentioned technical problems, the present invention provides a method for decompressing compressed files, the method comprising:

The network disk server obtains the file information of the file to be decompressed;

According to the file information, the network disk server invokes a decompression application programming interface to perform a decompression operation on the file to be decompressed to obtain the decompressed file.

Optionally, the network disk server calls a decompression application programming interface to decompress the file to be decompressed according to the file information, and the obtained decompressed file includes:

The network disk server loops through the objects to be decompressed contained in the file to be decompressed, and judges the category of the current object to be decompressed, and the object to be decompressed is a file or a folder;

When the object to be decompressed is a folder, create a folder, and perform a decompression operation on the object to be decompressed to obtain decompressed folder data;

When the object to be decompressed is a file, a decompression operation is performed on the object to be decompressed to obtain decompressed file data.

Optionally, according to the file information, the network disk server calls the decompression application programming interface to decompress the file to be decompressed, and after obtaining the decompressed file, it also includes:

The network disk server stores the file data and the folder data in a specified storage queue.

Optionally, after the network disk server stores the file data and the folder data in a specified storage queue, it also includes:

The network disk server loops through the specified storage queue, finds out the preset first folder ID information of the folder where the file data is located, and finds out the preset second folder ID information corresponding to the folder data. folder ID information, and store the first folder ID information and the second file ID information in a database;

According to the first preset storage format, the file data is stored in the database, so as to obtain the directory structure relationship of the decompressed files.

Optionally, after storing the folder data in the database according to the second preset storage format to obtain the directory structure relationship of the decompressed files, the method further includes:

The network disk server obtains the user's file list viewing instruction;

According to the file list viewing instruction, the directory structure relationship is read from the database, so that the user can view the corresponding file list.

Optionally, the decompression application programming interface is Java zip API.

In addition, the present invention also provides a device for decompressing compressed files, which device includes:

The network disk server obtains the module, which is used to obtain the file information of the file to be decompressed;

The network disk server decompression module is used to call the decompression application programming interface to decompress the file to be decompressed according to the file information to obtain the decompressed file.

Optionally, the network disk server decompression module includes:

The traversal judging unit is used to loop through the objects to be decompressed contained in the file to be decompressed, and judge the category of the current object to be decompressed, and the object to be decompressed is a file or a folder;

Create a decompression unit for creating a folder when the object to be decompressed is a folder, and perform a decompression operation on the object to be decompressed to obtain decompressed folder data;

The decompression unit is configured to perform a decompression operation on the object to be decompressed to obtain decompressed file data when the object to be decompressed is a file.

Optionally, also include:

The network disk server storage module is configured to store the file data and the folder data in a designated storage queue.

Optionally, also include:

The network disk server searches for a storage module, which is used to loop through the specified storage queue, find out the preset first folder ID information of the folder where the file data is located, and find out the preset folder data corresponding to the folder. Set the second folder ID information, and store the first folder ID information and the second file ID information into the database;

The first storage module of the network disk server is configured to store the file data in the database according to the first preset storage format, so as to obtain the directory structure relationship of the decompressed files.

In the method and device for decompressing compressed files provided by the present invention, the network disk server obtains the file information of the file to be decompressed; the above-mentioned network disk server calls the decompression application programming interface to decompress the above-mentioned file to be decompressed according to the above file information Operation to get the decompressed file. By obtaining the file information of the file to be decompressed, the above-mentioned file to be decompressed is stored on the above-mentioned network disk server, and the above-mentioned network disk server can decompress the file to be decompressed by calling the decompression application programming interface, so as to realize the decompression operation on the network disk server. Unzip the compressed file on .

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only For some embodiments of the present invention, those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic flow chart of a specific implementation of the compressed file decompression method provided by the embodiment of the present invention;

Fig. 2 is the Zip file decompression code segment that the embodiment of the present invention provides;

Fig. 3 is the file table data dictionary provided by the embodiment of the present invention;

Fig. 4 is the folder table data dictionary provided by the embodiment of the present invention;

FIG. 5 is a schematic flowchart of a specific implementation of the directory structure generation flowchart provided by the embodiment of the present invention;

Fig. 6 generates code fragments for the directory structure provided by the embodiment of the present invention;

Fig. 7 is a structural block diagram of an apparatus for decompressing compressed files provided by an embodiment of the present invention.

detailed description

In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1, Fig. 1 is a schematic flow chart of a specific implementation of the compressed file decompression method provided by the embodiment of the present invention, the decompression method includes the following steps:

Step 101: the network disk server obtains the file information of the file to be decompressed;

It should be noted that the above-mentioned file to be decompressed is stored on the above-mentioned network disk server. The above-mentioned file information may include information that characterizes each file included in the above-mentioned file to be decompressed, and the overall information of the above-mentioned file to be decompressed. For example, the file information may include name information, storage path information, and The name information of each file included and so on.

The format of the above-mentioned file to be decompressed, that is, the compressed file can be arbitrary, for example, it is in Zip format.

It can be understood that, before performing the decompression operation, the network disk server can obtain in advance the specific information of the compressed file stored on the network disk server and needs to be decompressed, so that the subsequent decompression process can perform corresponding operations.

Step 102: According to the file information, the network disk server invokes a decompression application programming interface to decompress the file to be decompressed to obtain the decompressed file.

It can be understood that the above-mentioned decompression application programming interface can be specifically Java zip API, and at this time the above-mentioned file to be decompressed is a Zip compressed file, and the above-mentioned network disk server can use the Java Zip compressed file to operate the corresponding API, and use the corresponding decompression technology to realize the decompression work of the file; the above decompression application programming interface can also be specifically other types of API, and the corresponding decompression process will be different at this time, and will not be repeated here.

The file decompression process may be to decompress each file in the file to be decompressed, and store the decompressed files to a specified storage path.

Since the object to be decompressed in the file to be decompressed may be a file or a folder, the decompression operation will be different for different objects to be decompressed, so when decompressing all the entities in the decompressed file, first judge the object to be decompressed category, and then perform the corresponding decompression operation.

In some embodiments of the present invention, the file decompression process may be specifically: the network disk server loops through the objects to be decompressed contained in the file to be decompressed, and judges the type of the object to be decompressed currently, and the object to be decompressed is determined. The object to be decompressed is a file or a folder; when the object to be decompressed is a folder, a folder is created, and the object to be decompressed is decompressed to obtain decompressed folder data; when the object to be decompressed is When extracting a file, perform a decompression operation on the object to be decompressed to obtain decompressed file data.

Specifically, when it is determined that the currently traversed object to be decompressed is a file, the object to be decompressed can be directly decompressed, and the decompressed file data can be written to the disk; and when it is judged that the currently traversed object to be decompressed When the object is a folder, you can create a folder first, and the creation of the folder can be based on the file information obtained before decompression. For example, the file information indicates that the name of the object folder to be decompressed is A, and the name of the created folder is It should also be A, and the corresponding decompression operation will be performed after the file is created.

When the above-mentioned file to be decompressed is a Zip compressed file, and the decompression application programming interface is specifically the Java zip API, the decompression process can utilize the ZipFile class and the ZipEntry class to realize the decompression operation of the Zip compressed file, and the cyclic traversal of the files to be decompressed can be specifically Implemented by while loop. The implementation code for decompressing the Zip file using the Java language can be specifically referred to in FIG. 2 . FIG. 2 is a code fragment for decompressing the Zip file provided by the embodiment of the present invention.

After the file to be decompressed is decompressed, the decompressed file data is obtained, and finally a decompressed folder corresponding to the file to be decompressed can be obtained, which is independent of the file to be decompressed, for example, the file to be decompressed is A.Zip , the name of the folder obtained after decompression can be A. At this time, the A folder and the A.Zip compressed file are independent of each other, that is, there is an extra A folder after decompression.

After the decompression of all the objects to be decompressed is completed, all the decompressed entity files can be stored in the designated storage queue, so in some embodiments of the present invention, the network disk server calls the decompressed file according to the file information. The application programming interface performs a decompression operation on the file to be decompressed, and after obtaining the decompressed file, it further includes: the network disk server storing the file data and the folder data in a designated storage queue.

It should be noted that, the above specified storage queue may specifically be a Java List collection.

Storing the decompressed file data and folder data in the queue can facilitate the generation of subsequent directory structure relationships.

After the decompressed file entities are stored in the queue, the file entities in the queue can be traversed to obtain the relationship between each entity, that is, the directory hierarchy relationship.

Therefore, in some embodiments of the present invention, after the network disk server stores the file data and the folder data in the specified storage queue, it further includes: the network disk server performs the specified storage queue Loop through, find out the preset first folder ID information of the folder where the file data is located, find out the preset second folder ID information corresponding to the folder data, and store the first folder storing the ID information and the second file ID information in a database; storing the file data in the database according to a first preset storage format, so as to obtain the directory structure relationship of the decompressed files.

It should be noted that the above designated storage queue may be a queue defined with a first-in-first-out policy, and the decompressed folder object and the folder object where the file to be decompressed are located can be stored in the queue.

The above-mentioned loop traversal can be implemented using a while loop. The process can be specifically: store the folder object where the file to be decompressed is located in the queue, and loop through the objects in the queue. You can first traverse the first element folder of the queue, that is, traverse the file All subfolders under the folder. Then find the decompressed file in the sub-file, and then judge whether the current sub-file is a folder, if so, store the folder object in the queue, and store the folder information in the database, and the ID corresponding to the folder The information is stored in the database, and the above-mentioned folder information can include information such as the folder name, the saving path, and the folder to which it belongs; if not, it indicates that the current sub-file is a file, and the file can be stored in the database, and will be corresponding to the file. The ID information is stored in the database together. Using the traversal loop to find out the hierarchical relationship between each file entity, and then obtain the directory structure relationship of the decompressed file.

It should be noted that the above first folder ID information may refer to folder information where the decompressed file object is located. The above-mentioned second folder ID information may refer to the folder information of the decompressed folder object.

It can be understood that the corresponding relationship between the folder object and the corresponding ID can be established in advance. Specifically, a Map object can be defined, and the key-value pair of the Map object can be the folder object-corresponding ID. Further, the ID can be stored in the Map object, and the required ID can also be read from the Map object.

The above-mentioned first preset storage format may refer to the format when the file data is stored in the database, that is, the storage format of the file data is preset, for example, the file data may be stored in the file table, and the file name, file description, Information such as the file size and the folder ID corresponding to the file is stored in the file table.

For the extracted folder data, the folder can be stored in the folder table. Information such as folder name, folder size, and folder description can be stored in the folder table.

In order to better store the decompressed data, the file table and folder table can be pre-designed, and the corresponding file table data dictionary and folder table data dictionary need to be defined in advance, that is, each field is pre-defined, such as id, nam, size... and other fields. For specific definitions, please refer to FIG. 3 and FIG. 4 . FIG. 3 is the file table data dictionary provided by the embodiment of the present invention, and FIG. 4 is the folder table data dictionary provided by the embodiment of the present invention.

In order to better introduce the generation process of the directory structure relationship, below in conjunction with Fig. 5 and Fig. 6, the compressed file is a Zip file, and the programming implementation language is a corresponding introduction to the generation process of the directory structure relationship of Java, and Fig. 5 is an embodiment of the present invention A schematic flowchart of a specific implementation of the provided directory structure generation flowchart, and FIG. 6 is a code fragment for directory structure generation provided by an embodiment of the present invention.

As shown in Figure 5, first you need to obtain the Zip file zipFile to be decompressed and its parent folder rootFolder; then perform the decompression operation of the Zip file, and store all the decompressed file objects in the collection filelist; then pre-define Map<File ,String>idMap, which defines the key-value pair as folder object-corresponding ID, defines a queue Queue<File>queue for storing folder objects, and the queue follows the first-in-first-out strategy; queue.enqueue(rootFolder), rootFolder Join the team, idMap.put(rootFolder, rootId), rootFolder and its corresponding ID, that is, store the folder at the head of the team in the queue, and obtain the ID corresponding to the corresponding folder; then judge queue.isEmpty()? , that is to judge whether the current queue is empty, if it is empty, it means that the current hierarchical relationship has been read, and the process will end, if it is not empty, it will enter the next step;

Then read the data, and store the read ID into the database, that is, File fr=queue.dequeue(), String id=idMap.get(fr); , to judge whether frsub is the file just decompressed; judge whether the traversal is over, if the traversal is over, then return whether the queue is empty, if the traversal is not over, then judge whether the current file is the file just decompressed, that is, judge the current decompressed file Does the file already exist, ie fileList.contains(frsub)? ; If it does not exist, judge whether the current file is a file or a folder, that is, frsub.isDirectory()? ;When it is a file, store the file information in the file table, that is, saveFile(user,frsub,id); when it is a folder, store the folder information in the folder table, that is, queue.enqueue(frsub), Serializable ,key=saveDir(user,frsub,id),idMap.put(frsub,key.toString()).

It can be understood that the above is only a general description of the process of generating the directory structure. For specific implementation, please refer to the accompanying drawings and corresponding code segments, and details will not be repeated here.

After the decompressed file information and folder information are stored in the database, the hierarchical relationship between each file and folder can be obtained, that is, the directory hierarchical relationship of the decompressed file, that is, the required information can be read from the database. Directory structure relationship.

Therefore, in some embodiments of the present invention, after storing the file data in the database according to the first preset storage format to obtain the directory structure relationship of the decompressed file, it further includes: the network disk service The terminal obtains the user's file list viewing instruction; according to the file list viewing instruction, the directory structure relationship is read from the database, so that the user can view the corresponding file list.

It can be understood that after receiving the user's file list viewing instruction, that is, when the user wants to view the file list of the decompressed file, the corresponding directory structure relationship can be read from the database, and then the corresponding directory structure relationship can be displayed to the user.

In the method for decompressing a compressed file provided in the embodiment of the present invention, the network disk server obtains the file information of the file to be decompressed; the above-mentioned network disk server calls the decompression application programming interface to perform the decompression operation on the above-mentioned file to be decompressed according to the above-mentioned file information, to get the unzipped file. By obtaining the file information of the file to be decompressed, the above-mentioned file to be decompressed is stored on the above-mentioned network disk server, and the above-mentioned network disk server can decompress the file to be decompressed by calling the decompression application programming interface, so as to realize the decompression operation on the network disk server. Unzip the compressed file on . It can be seen that this method realizes the process of decompressing compressed files on the network disk server.

The compressed file decompression device provided by the embodiment of the present invention is introduced below. The compressed file decompression device described below and the compressed file decompression method described above can be referred to in correspondence.

Fig. 7 is the structural block diagram of the compressed file decompression device provided by the embodiment of the present invention, with reference to Fig. 7 compressed file decompression device can comprise:

The network disk service end acquisition module 701 is used to obtain the file information of the file to be decompressed;

The network disk server decompression module 702 is configured to call the decompression application programming interface to decompress the file to be decompressed according to the file information to obtain the decompressed file.

Optionally, the network disk server decompression module includes:

The traversal judging unit is used to loop through the objects to be decompressed contained in the file to be decompressed, and judge the category of the current object to be decompressed, and the object to be decompressed is a file or a folder;

Create a decompression unit for creating a folder when the object to be decompressed is a folder, and perform a decompression operation on the object to be decompressed to obtain decompressed folder data;

The decompression unit is configured to perform a decompression operation on the object to be decompressed to obtain decompressed file data when the object to be decompressed is a file.

Optionally, also include:

The network disk server storage module is configured to store the file data and the folder data in a designated storage queue.

Optionally, also include:

The network disk server searches for a storage module, which is used to loop through the specified storage queue, find out the preset first folder ID information of the folder where the file data is located, and find out the preset folder data corresponding to the folder. Set the second folder ID information, and store the first folder ID information and the second file ID information into the database;

The first storage module of the network disk server is configured to store the file data in the database according to the first preset storage format, so as to obtain the directory structure relationship of the decompressed files.

The compressed file decompression device provided by the embodiment of the present invention obtains the file information of the file to be decompressed, and the above-mentioned file to be decompressed is stored on the above-mentioned network disk server, and the above-mentioned network disk server can be treated by calling the decompression application programming interface Decompress the file and perform the decompression operation to realize the decompression of the compressed file on the network disk server. It can be seen that the device realizes the process of decompressing compressed files on the network disk server.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same or similar parts of each embodiment can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and for the related information, please refer to the description of the method part.

Professionals can further realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software or a combination of the two. In order to clearly illustrate the possible For interchangeability, in the above description, the composition and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

The steps of the methods or algorithms described in connection with the embodiments disclosed herein may be directly implemented by hardware, software modules executed by a processor, or a combination of both. Software modules can be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other Any other known storage medium.

The method and device for decompressing compressed files provided by the present invention have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of the present invention, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (10)

1. a kind of method that compressed file is decompressed, it is characterised in that including：

Dropbox service end obtains the fileinfo for treating decompressing files；

The Dropbox service end calls decompression application programming interface to treat that decompressing files enters to described according to the fileinfo Row decompression operations, obtain decompressing files.

2. the method for claim 1, it is characterised in that the Dropbox service end calls solution according to the fileinfo Pressure application programming interface treats that decompressing files carries out decompression operations to described, and obtaining decompressing files includes：

The Dropbox service end is circulated traversal to the object to be decompressed for treating to be included in decompressing files, and judgement is currently treated The classification of object is decompressed, the object to be decompressed is file or folder；

When described when it is file to decompress object, establishment file folder, and decompression operations are carried out to the object to be decompressed, draw Folder data after decompression；

When the number of files for carrying out decompression operations to the object to be decompressed when it is file to decompress object, drawing after decompression According to.

3. method as claimed in claim 2, it is characterised in that in the Dropbox service end according to the fileinfo, call Decompression application programming interface treats that decompressing files carries out decompression operations to described, obtains also including after decompressing files：

The Dropbox service end stores to specified storage queue the file data and the folder data.

4. method as claimed in claim 3, it is characterised in that in the Dropbox service end by the file data and the text Also include after part folder data storage to specified storage queue：

The Dropbox service end is circulated traversal to the specified storage queue, finds out file where the file data Default first file id information, finds out the corresponding default second file id information of the folder data, and by institute State the first file id information and the second file ID information Store to database；

According to the first default storage format, the file data is stored to database, to draw the catalogue of the decompressing files Structural relation.

5. method as claimed in claim 4, it is characterised in that described according to the first default storage format, by the file Data storage to database, also to include after the bibliographic structure relation for drawing the decompressing files：

The listed files that the Dropbox service end obtains user checks instruction；

Instruction is checked according to the listed files, the bibliographic structure relation is read from the database, so that the user View corresponding listed files.

6. the method as described in claim 1 to 5, it is characterised in that the decompression application programming interface is Java zip API。

7. the device that a kind of compressed file is decompressed, it is characterised in that including：

Dropbox service end acquisition module, the fileinfo of decompressing files is treated for obtaining；

Dropbox service end decompression module, for according to the fileinfo, calling decompression application programming interface to be treated to described Decompressing files carries out decompression operations, obtains decompressing files.

8. device as claimed in claim 7, it is characterised in that the Dropbox service end decompression module includes：

Ergodic judgement unit, for being circulated the object to be decompressed for treating to be included in decompressing files traversal, judges to work as Before object to be decompressed classification, the object to be decompressed be file or folder；

Decompression units are created, for when root when decompressing object and being file, establishment file to be pressed from both sides, and treats that decompression is right to described As carrying out decompression operations, the folder data after decompression is drawn；

Decompression units, for carrying out decompression operations to the object to be decompressed when it is file to decompress object when described, draw solution File data after pressure.

9. device as claimed in claim 8, it is characterised in that also include：

Dropbox service end memory module, for the file data and the folder data to be stored to specified storage queue.

10. device as claimed in claim 9, it is characterised in that also include：

Dropbox service end finds memory module, for being circulated traversal to the specified storage queue, finds out the number of files According to the default first file id information of place file, corresponding default second file of the folder data is found out Id information, and by the first file id information and the second file ID information Store to database；

The memory module of Dropbox service end first, for according to the first default storage format, the file data being stored to data Storehouse, to draw the bibliographic structure relation of the decompressing files.