Home > Cloud Computing > Cloud Applications

Upload files to the embedded Web server on the goAhead.

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞
Summary: describes in detail how to upload (upload) files to the server on goAhead2.5. Development Environment: Host: WindowsXP; Virtual Machine: Ubuntu9.10; Cross Compiler: arm-uclibc-gcc (arm-linux-gcc-4.3.2 can be compiled successfully )---------------

Summary: describes in detail how to upload (upload) files to the server on goAhead 2.5.

Development Environment:

Host Machine: Windows XP;

Virtual Computer: Ubuntu 9.10;

Cross Compiler:Rm-Uclibc-gcc (arm-linux-gcc-4.3.2 can be compiled smoothly)

-----------------------------------

1. Description

Recently, I debugged the web file upload function to the server. However, during debugging, the handler function always failed to obtain the file path, so I had to find many articles on the Internet, however, the principle and implementation method of front-end File Upload are mostly mentioned, but the server-side processing implementation is not provided (implemented using the C function ). In addition, due to lack of understanding about the web, it took some time to study web programs.

2. How to upload files using goAhead

In general, it is easier to implement the file upload function on the goAhead. Because there is a ready-made code available, just port it a little.

2.1 Implementation Principle

Use html form to submit File Upload requests. The core of the web server processes the file data received by the Post client (note that the post is binary data). Finally, the web server writes the received file data in binary format to the Local Storage System of the server.

2.2 front-end design

The front-end design is relatively simple, that is, to design a form, the type attribute isFile, I am adding such a form on the asptest. asp web page of wwwdemo that comes with the goAhead-2.5.

  1. <Html>
  2. Nc., 1999-2010. All Rights ReservEd.->
  3. <Head>
  7. <Link Rel="Stylesheet" Href="/Style/normal_ws.css" Type="TExT/css">
  8. <%Language=Javascript%>
  10. Function uploadFileSubmit ()
  11. {
  12. // Alert (document. getElementById ("document. softupDate"));
  13. Return;
  14. }
  16. Head>
  18. <Body>
  20. <H1>ASP/JavaScript? Test H1>
  21. <H2>Expanded ASP data:<% AspTest ("Peter Smith", "112 Merry Way"); %> H2>
  23. <P>
  24. <% Var z ;\
  25. For (Z=0; Z<5;ZZ= Z + 1 )\
  26. {\
  27. If (z<= 2 )\
  28. Write(Z + "isLessThan 3<Br>");\
  29. ELsE if (Z= 3 )\
  30. Write (z + "is equal to 3<Br>");\
  31. Else \
  32. Write (z + "is greater than 3<Br>");\
  33. }\
  34. %>
  35. P>
  40. <Span Style="ColOr: # 3333ff ;">
  41. <H1>GoForm upload file test H1>
  42. <Form Id="Softupdate" Action=/Goform/formUploadFileTestMethod=POST Enctype="Multipart/form-data">
  43. <Table>
  44. Select file:<Td> <Input Id="Fileupload" Type="File" Name="Fileupload" Size=60 Value=""> Td>
  45. <Td> <Input Id="FileuploadSuBmit" Type="Submit" Name="Update" Value="Update" OnClick="UploadFileSubmit ()"> Td>
  46. Table>
  47. Form>
  50. Span>
  52. Body>
  53. Html>

The enctype parameter is used to set the form's MIME encoding method. When uploading a file (or containing a text box at the same time), you must set its attribute to "multipart/form-data "; formUploadFileTest is a processing function defined by the web server to write the uploaded file data received by the web server to the storage system.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
get the permalink apache embedded web server qt embedded web server embedded web server project python embedded web server php upload multiple files to server how to upload web page to server

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More