抓取別的網頁的內容代码,CSharp代码库,德仔网

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【CSharp】抓取別的網頁的內容
作者:Dezai.CN / 发布于2011/7/7/ 762
<div><span style="color: rgb(0,0,255)">string</span><span style="color: rgb(0,0,0)"> content </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">string</span><span style="color: rgb(0,0,0)">.Empty;
</span><span style="color: rgb(0,0,255)">string</span><span style="color: rgb(0,0,0)"> str </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(128,0,0)">"</span><span style="color: rgb(128,0,0)">http://www.baidu.com/</span><span style="color: rgb(128,0,0)">"</span><span style="color: rgb(0,0,0)">;
WebRequest wrq </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> WebRequest.Create(str);
WebResponse wrs </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> wrq.GetResponse();
</span><span style="color: rgb(0,0,255)">using</span><span style="color: rgb(0,0,0)"> (StreamReader dr </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">new</span><span style="color: rgb(0,0,0)"> StreamReader(wrs.GetResponseStream(), Encoding.GetEncoding(</span><span style="color: rgb(128,0,0)">"</span><span style="color: rgb(128,0,0)">gb2312</span><span style="color: rgb(128,0,0)">"</span><span style="color: rgb(0,0,0)">)))
{
content </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> dr.ReadToEnd();</span><span style="color: rgb(0,128,0)">//</span><span style="color: rgb(0,128,0)">这就是全部内容
</span><span style="color: rgb(0,128,0)">//</span><span style="color: rgb(0,128,0)">得到内容后根据正则获取你所需要的东西。要先分析他的html</span><span style="color: rgb(0,128,0)">
</span><span style="color: rgb(0,0,0)">}
</span><span style="color: rgb(0,0,255)">using</span><span style="color: rgb(0,0,0)"> (StreamWriter sw </span><span style="color: rgb(0,0,0)">=</span><span style="color: rgb(0,0,0)"> </span><span style="color: rgb(0,0,255)">new</span><span style="color: rgb(0,0,0)"> StreamWriter(Server.MapPath(</span><span style="color: rgb(128,0,0)">"</span><span style="color: rgb(128,0,0)">default.htm</span><span style="color: rgb(128,0,0)">"</span><span style="color: rgb(0,0,0)">), </span><span style="color: rgb(0,0,255)">false</span><span style="color: rgb(0,0,0)">, Encoding.GetEncoding(</span><span style="color: rgb(128,0,0)">"</span><span style="color: rgb(128,0,0)">gb2312</span><span style="color: rgb(128,0,0)">"</span><span style="color: rgb(0,0,0)">)))
{
sw.WriteLine(content);

}
}
</span></div>
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