CN103647841B - Method for analyzing and downloading network file address of thin client - Google Patents

Abstract

The invention provides a network file address analysis and downloading method for a thin client. The method is to analyze whether the remote file address input by the user is valid, return the file information and download it to the user network file download storage space. Using the present invention to resolve network addresses is simple and highly reliable; the method described in the present invention can inform the user of the real information of the network address before downloading, preventing downloading of wrong files, downloading webpage links, downloading wrong webpages, and downloading files from excessive influence High-intensity work of the server, etc.; the method of the present invention directly downloads remote files to the user's network disk, which is more efficient than the user's first downloading to the local area and then uploading to the server; when the user logs out of the present invention, the server will still automatically download the file. Reduce user waiting time.

Description

A network file address resolution and download method for thin client

technical field

The invention relates to a network file address resolution and download method for a thin client, belonging to the technical field of network storage.

Background technique

In recent years, with the development of computer networks and thin client terminals, under the requirements of meeting user needs, improving the security of user data, reducing costs, and being easy to deploy and maintain, based on "thin client + network + cloud computing server "The model has become inevitable. In this mode, users put forward better requirements for the authenticity of the required remote file address, the transmission of remote files, and the efficiency of downloading to the user's storage server.

Contents of the invention

Aiming at the deficiencies of the prior art, the invention provides a network file address resolution and download method for thin clients. The method is to analyze whether the remote file address input by the user is valid, return the file information and download it to the user network file download storage space.

Technical scheme of the present invention is as follows:

A network file address resolution and download method for a thin client, including remote address resolution and a file download program, specifically as follows:

The steps of parsing the remote address and returning the address information method are as follows: 1)-8):

1) Log in to the network disk and read the file information stored by the logged-in user;

2) Click the network file download button to prompt the user to input the network address of the network file;

3) After the web server receives the network address entered by the user, it gets an array ARRAY, which contains all the headers sent by the server in response to an HTTP request;

4) The server judges whether the HTTP response is successful. If it is successful, that is, ARRAY[0] is 200 or 302 or 302MovedTemporarily, proceed to the next step; otherwise, the user will be prompted that this address is not a valid address, that is, this address cannot be opened, and skip to step 8 );

5) Obtain the file type ARRAY[Content-Type] and URL pointing address ARRAY[Location] or ARRAY[location]. If the string "application" exists in the file type or the pointing address exists, it means that there is a downloadable file in this address. This pointing address is the source address of the file required by the user, go to step 7); otherwise, go to the next step;

6) Determine whether there is a string "text/html" in the file type, and there is no pointing address, if not, inform the user that the input file is unknown; if so, inform the user that the input address is not a download address, it may be a web page link, and prompt whether Download this link, if downloaded, go to the next step, otherwise, skip to step 8);

7) Obtain the size of the file. If the file is smaller than the set file size, set the file size to ensure the normal operation of the server. For example, if it is less than 20M, return to the source address and start the file download program; otherwise, it prompts that the file is large, and download it using the download tool ;

8) Analysis ends;

The steps of the file download procedure are as steps 9)-14):

9) start;

10) Open the file at the source address with a read-only method;

11) Create a new file in the user network file download storage area, and the file name is the file name obtained from the source address;

12) Read the content pointing to the address file, and write to the newly created file until the end of reading the source file;

13) Determine whether the downloaded file name is url-encoded, if so, rename the file name to the original original file name; if not, go to the next step;

14) End.

Selected according to the present invention, the thin client is a client of an embedded Linux operating environment, provides input and output devices, and embeds a web browser.

Preferably, according to the present invention, the server end is a cloud computing server cluster, which is constructed by multiple servers, and provides users with corresponding storage areas and web management services.

The advantages of the present invention are:

(1) Using the present invention to resolve network addresses is simple and highly reliable;

(2) The method described in the present invention can inform the user of the real information of the network address before downloading, preventing downloading of wrong files, downloading webpage links, downloading wrong webpages, downloading too large files and affecting the high-intensity work of the server, etc.;

(3) The method described in the present invention directly downloads the remote file to the user's network disk, which is more efficient than the user first downloading to the local and then uploading to the server;

(4) In the present invention, after the user logs out, the server will still automatically download the file, reducing the user's waiting time.

Description of drawings

What Fig. 1 shows is the step figure of the server of the present invention to resolve the network address, wherein,

1. The user enters the url;

2. The server responds to an http request;

3. Whether the response is successful;

4. The file type exists application or has a pointing address;

5. Get the source address of the file;

6. Obtain whether the file size is less than 20M (variable);

7. Whether to download;

8. Start the server download program;

9. The file type exists text/html;

10. This is only a network link;

11. The type of the file is unknown;

12. The address entered by the user is unknown (the address is entered incorrectly);

13. The remote file is too large, it is recommended to use a downloader to download the file.

Figure 2 shows the address resolution interaction process between the web browser and the server, wherein,

14. Log in according to the account number and password network disk;

15. Respond to the login of the server to obtain the information of the user's storage space;

16. User file display;

17. To download remote files, prompt the user to enter the network address;

18. The server responds to all headers of the http request;

19. Obtain all the information of the address, analyze and get the real source address of the file;

20. Return the analysis result;

21. Start the download program, and download the file to the user network file storage space according to the resolved address;

22. After the download is complete, end the current download.

detailed description

The present invention will be described in detail below in conjunction with examples and accompanying drawings, but is not limited thereto.

Embodiment 1,

A network file address resolution and download method for a thin client, including remote address resolution and a file download program, specifically as follows:

The steps of parsing the remote address and returning the address information method are as follows: 1)-8):

1) Log in to the network disk and read the file information stored by the logged-in user;

2) Click the network file download button to prompt the user to input the network address of the network file;

3) After the web server receives the network address entered by the user, it gets an array ARRAY, which contains all the headers sent by the server in response to an HTTP request;

4) The server judges whether the HTTP response is successful. If it is successful, that is, ARRAY[0] is 200 or 302 or 302MovedTemporarily, proceed to the next step; otherwise, the user will be prompted that this address is not a valid address, that is, this address cannot be opened, and skip to step 8 );

5) Obtain the file type ARRAY[Content-Type] and URL pointing address ARRAY[Location] or ARRAY[location]. If the string "application" exists in the file type or the pointing address exists, it means that there is a downloadable file in this address. This pointing address is the source address of the file required by the user, go to step 7); otherwise, go to the next step;

6) Determine whether there is a string "text/html" in the file type, and there is no pointing address, if not, inform the user that the input file is unknown; if so, inform the user that the input address is not a download address, it may be a web page link, and prompt whether Download this link, if downloaded, go to the next step, otherwise, skip to step 8);

7) Obtain the size of the file. If the file is smaller than the set file size, set the file size to ensure the normal operation of the server. For example, if it is less than 20M, return to the source address and start the file download program; otherwise, it prompts that the file is large, and download it using the download tool ;

8) Analysis ends;

The steps of the file download procedure are as steps 9)-14):

9) start;

10) Open the file at the source address with a read-only method;

11) Create a new file in the user network file download storage area, and the file name is the file name obtained from the source address;

12) Read the content pointing to the address file, and write to the newly created file until the end of reading the source file;

13) Determine whether the downloaded file name is url-encoded, if so, rename the file name to the original original file name; if not, go to the next step;

14) End.

The thin client is a client of an embedded Linux operating environment, which provides input and output devices and is embedded in a web browser.

The server end is a cloud computing server cluster, which is constructed by multiple servers and provides users with corresponding storage areas and web management services.

The results of parsing the following web pages using the above method:

Network address http://www.ygb.sdu.edu.cn/uploads/soft/2_131011091704.xls

Source address http://www.ygb.sdu.edu.cn/uploads/soft/2_131011091704.xls

Network address http://xl.7edown.com:20000/green/Adult%20PDF%20Password% 20Recovery.rar Source address http://xl.7edown.com:20000/green/Adult%20PDF%20Password% 20Recovery.rar , the download file name is Adult+PDF+Password+Recovery.rar

Network address http://download.feixin.10086.cn/download/ OSDownloadToComputer.action?id=138

Source address http://f.10086.cn/Mobiledownload/Android/Fetion_Android_V5.2.3_g.apk

Network address http://www.kugou.com/topic/download.php

Source address http://downmini.kugou.com/kugou7535.exe

The download file name is kugou7535.exe

Network address http://pinyin.sogou.com/softdown.php?v=6.7&type=c&ref= indexbanner source address http://download.ime.sogou.com/1381890266/sogou_pinyin_67f.exe?st=IGGpjFdR_bXXJIw51wNFYg&e=1382176944&fn =sogou_pinyin_67f.exe

Network address http://blog.sina.com.cn/s/blog_7f5a00410101ceht.html

Hint this is a web page

Network address http://www.sdu.edu.cn/

Hint this is a web page

网络地址http://xa.ctfs.ftn.qq.com/ftn_handler/ 509b3eb130b6923baf7038817d60acb978a95bcce2262fab018dc1d19d7e0bbc461086e61ce2b 2f58b6264b4b2529797f54e77610137eb79b038fae015035aee/%E4%B8%93%E5%88%A9%E5%88% 86%E5%B7%A5%E7%BB% 86%E5%88%99.docx

Prompt that this address is wrong and does not exist.

Claims (4)

1. a kind of network file address resolution and download method for thin client, it is characterized in that, the method comprises parsing remote address and file download, specifically as follows: The steps of parsing the remote address and returning the address information method are as follows: 1)-8): 1) Log in to the network disk and read the file information stored by the logged-in user; 2) Click the network file download button to prompt the user to input the network address of the network file; 3) After the web server receives the network address entered by the user, it gets an array ARRAY, which contains all the headers sent by the server in response to an HTTP request; 4) The server judges whether the HTTP response is successful. If it is successful, that is, ARRAY[0] is 200 or 302 or 302 MovedTemporarily, proceed to the next step; otherwise, the user will be prompted that this address is not a valid address, that is, this address cannot be opened, and skip to the step 8); 5) Obtain the file type ARRAY[Content-Type] and URL pointing address ARRAY[Location] or ARRAY[location]. If the string "application" exists in the file type or the pointing address exists, it means that there is a downloadable file in this address. This pointing address is the source address of the file required by the user, go to step 7); otherwise, go to the next step; 6) Determine whether the file type has the string "text/html" and no address, if not, inform the user that the downloaded file is unknown; if so, inform the user that the address entered is not a download address, it may be a web page link, and prompt whether Download this link, if downloaded, go to the next step, otherwise, skip to step 8); 7) Obtain the size of the file. If the file is smaller than the set file size, the set file size is used to ensure the normal operation of the server, return to the source address, and execute the steps of file download; otherwise, it prompts that the file is large, and download it using the download tool; 8) Analysis ends; The steps of file download are as steps 9)-14): 9) start; 10) Open the file at the source address with a read-only method; 11) Create a new file in the user network file download storage area, and the file name is the file name obtained from the source address; 12) Read the content pointing to the address file, and write to the newly created file until the end of reading the source file; 13) Determine whether the downloaded file name is url-encoded, if so, rename the file name to the original original file name; if not, go to the next step; 14) End. 2. a kind of network file address resolution and download method for thin client according to claim 1, it is characterized in that, described thin client is the client of embedded Linux operating environment, provides input and output equipment, embedded web browser. 3. A kind of network file address resolution and downloading method for thin client according to claim 1, it is characterized in that, described server end is cloud computing server cluster, is built by a plurality of servers, provides user with corresponding Storage area and web management service. 4. A network file address resolution and download method for thin clients according to claim 1, wherein the set file size is 20M.