正则表达式获取远程网页

最新推荐文章于 2023-02-28 22:51:37 发布

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最新推荐文章于 2023-02-28 22:51:37 发布

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原文链接：http://www.cnblogs.com/wanghafan/archive/2012/02/09/2344276.html

[一篮饭特稀原创，转载请注明出处http://www.cnblogs.com/wanghafan/archive/2012/02/09/2344276.html]

--简单例子:

View Code

1 using System.Text;
2 using System.Text.RegularExpressions;
3 
4 string str = "&lt;img&gt;123456789&lt;/img&gt;";
5 string regexStr = @"&lt;img&gt;([^&lt;]*)&lt;/img&gt;"; 
6 Match mc = Regex.Match(str, regexStr, RegexOptions.IgnoreCase);
7 Response.Write(mc.Groups[1].Value);

--天气例子：

View Code

 1 using System.Text;
 2 using System.Text.RegularExpressions;
 3 
 4 string str = GetRequestString("http://www.ntxnw.com.cn/tq.asp?s_type=00", 8000, 1, Encoding.GetEncoding("GB2312"));
 5 string regexStr = XXXXXXXXXXXXXXXXXXXXXX;
 6 Match mc = Regex.Match(str, regexStr, RegexOptions.IgnoreCase);
 7 this.divContent.InnerHtml=mc.Groups[1].Value;
 8          /// <summary>
 9 /// 获取指定远程网页内容
10 /// </summary>
11 /// <param name="strUrl">所要查找的远程网页地址</param>
12 /// <param name="timeout">超时时长设置，一般设置为8000</param>
13 /// <param name="enterType">是否输出换行符，0不输出，1输出文本框换行</param>
14 /// <param name="EnCodeType">编码方式</param>
15 /// <returns></returns>
16 /// 也可考虑 static string
17         public string GetRequestString(string strUrl, int timeout, int enterType, System.Text.Encoding EnCodeType)
18         {
19             string strResult;
20             try
21             {
22                 HttpWebRequest myReq = (HttpWebRequest)HttpWebRequest.Create(strUrl);
23                 myReq.Timeout = timeout;
24                 HttpWebResponse HttpWResp = (HttpWebResponse)myReq.GetResponse();
25                 Stream myStream = HttpWResp.GetResponseStream();
26                 StreamReader sr = new StreamReader(myStream, EnCodeType);
27                 StringBuilder strBuilder = new StringBuilder();
28                 while (-1 != sr.Peek())
29                 {
30                     strBuilder.Append(sr.ReadLine());
31                     if (enterType == 1)
32                     {
33                         strBuilder.Append("\r\n");
34                     }
35                 }
36                 strResult = strBuilder.ToString();
37             }
38             catch (Exception err)
39             {
40                 strResult = "请求错误：" + err.Message;
41             }
42             return strResult;
43         }