Home > Developer > .Net Core

Example of Web Page Content captured by ASP. NET

Source: Internet
Author: User
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

Asp.net requires three types of webpage content capturing: WebRequest, WebResponse, and StreamReader.

The namespace of WebRequest and WebResponse is:

System. Net

The namespace of StreamReader is:

System. IO

ASP. NET captures the core code of webpage content

 
 
    
  
  
  1. WebRequest request = WebRequest.Create("http://www.cftea.com/");  
    2. 
  
  
  2. WebResponse response = request.GetResponse();  
    3. 
  
  
  3. StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding("gb2312"));  
    4.

The Create method of the WebRequest class is a static method, and the parameter is the URL of the webpage to be crawled;

Encoding specifies the Encoding. Encoding has global common Encoding such as ASCII, UTF32, and UTF8, but does not have the gb2312 Encoding attribute. Therefore, we use GetEncoding to obtain gb2312 Encoding.

Example

 
 
    
  
  
  1. <% @ Page Language ="C #"%>
    2. 
  
  
  2. <% @ Import Namespace ="System. Net"%>
    3. 
  
  
  3. <% @ Import Namespace ="System. IO"%>
    4. 
  
  
  4. <! DOCTYPE html PUBLIC"-// W3C // dtd xhtml 1.0 Transitional // EN" Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <Script runat ="Server">
    5. 
  
  
  5. VoidPage_Load (ObjectSender, EventArgs e)
    6. 
  
  
  6. {
    7. 
  
  
  7. Try 
    8. 
  
  
  8. {
    9. 
  
  
  9. WebRequest request = WebRequest. Create ("Http://www.cftea.com /");
    10. 
  
  
  10. WebResponse response = request. GetResponse ();
    11. 
  
  
  11. StreamReader reader =NewStreamReader (response. GetResponseStream (), Encoding. GetEncoding ("Gb2312"));
    12. 
  
  
  12. 
  
  
  13. Tb. Text = reader. ReadToEnd ();
    14. 
  
  
  14. 
  
  
  15. Reader. Close ();
    16. 
  
  
  16. Reader. Dispose ();
    17. 
  
  
  17. Response. Close ();
    18. 
  
  
  18. }
    19. 
  
  
  19. Catch(Exception ex)
    20. 
  
  
  20. {
    21. 
  
  
  21. Tb. Text = ex. Message;
    22. 
  
  
  22. }
    23. 
  
  
  23. }
    24. 
  
  
  24. </Script> Http://www.w3.org/1999/xhtml">
    25. 
  
  
  25. <Head runat ="Server">
    26. 
  
  
  26. <Title> capture webpage content-Qianyi Network </title>
    27. 
  
  
  27. </Head>
    28. 
  
  
  28. <Body>
    29. 
  
  
  29. <Form id ="Form1"Runat ="Server">
    30. 
  
  
  30. <Div>
    31. 
  
  
  31. <Asp: TextBox ID ="Tb"Runat ="Server"Width ="500"Height ="300"TextMode ="MultiLine"> </Asp: TextBox>
    32. 
  
  
  32. </Div>
    33. 
  
  
  33. </Form>
    34. 
  
  
  34. </Body>
    35. 
  
  
  35. </Html>
    36. 
  
  
  36.  
    37.

In this way, ASP. NET captures webpage content.

  1. Differences between Bind and Eval in ASP. NET: two types of binding
  2. Simple common ASP. NET Code 2)
  3. Simple common ASP. NET code 1)
  4. ASP. NET tips: Use of unmanaged COM components
  5. Another implementation of concatenating strings in ASP. NET: Response. Write

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:
asp net web api authentication token example how to set default page in asp net web config how to create web page in asp net set default page in asp net web config asp net home page curl web page content asp page example
Related Article
asp.net Core Data protection (the data Protection cluster sce...
asp.net core-authorize characteristics
Micro-service Monitoring zipkin+asp.net core
Combine ASP NET Core and SQL Server with Docker Compose
ASP. net mvc creates 404 jump instances (not 302 and 200), mv...

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