从别的网页上抓取部分内容实现我自己的功能

mrslikelin 2012-08-21 02:57:54

我想从另一个网站中抓取新闻列表到我的网站中，我现在能得到目标源代码，并在TEXTBOX文本中显示，怎么处理这段内容只保留我想要的HTML片段内容？

也就是说我想再别的网页上抓取人民币汇率那么一部分内容放在我自己的网页上，现在整个网页是抓出来了我想的是怎么去抓我想要的那一部分内容

...全文

168 7 打赏收藏转发到动态举报

写回复

用AI写文章

7 条回复

切换为时间正序

请发表友善的回复…

发表回复

huayy 2012-08-27

打赏
举报

如果不知道正则，也可以通过两个指定的字符，取字符中的中间值。

Function GetKey(ByVal HTML, ByVal Start, ByVal Last)
Dim body1 = Split(HTML, Start)
Dim body2 = Split(body1(1), Last)
GetKey = body2(0)
End Function

qvbzyx 2012-08-27

打赏
举报

using System;

using System.Net;

using System.Text;

using System.IO;





    public class Test

    {

        // Specify the URL to receive the request.

        public static void Main (string[] args)

        {

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create (args[0]);



            // Set some reasonable limits on resources used by this request

            request.MaximumAutomaticRedirections = 4;

            request.MaximumResponseHeadersLength = 4;

            // Set credentials to use for this request.

            request.Credentials = CredentialCache.DefaultCredentials;

            HttpWebResponse response = (HttpWebResponse)request.GetResponse ();



            Console.WriteLine ("Content length is {0}", response.ContentLength);

            Console.WriteLine ("Content type is {0}", response.ContentType);



            // Get the stream associated with the response.

            Stream receiveStream = response.GetResponseStream ();



            // Pipes the stream to a higher level stream reader with the required encoding format. 

            StreamReader readStream = new StreamReader (receiveStream, Encoding.UTF8);



            Console.WriteLine ("Response stream received.");

            Console.WriteLine (readStream.ReadToEnd ());

            response.Close ();

            readStream.Close ();

        }

    }



/*

The output from this example will vary depending on the value passed into Main 

but will be similar to the following:



Content length is 1542

Content type is text/html; charset=utf-8

Response stream received.

<html>

...

</html>



*/