C# 设置http代理访问
开始写Blog读取工具时一直是直接访问,访问方式也比较简单:
WebRequest _HWR = WebRequest.CreateDefault(new System.Uri(URL)); WebResponse _HRS = _HWR.GetResponse() ; Stream ReceiveStream = _HRS.GetResponseStream(); 但是最近打开工程一看,代码运行不正常,调试了一下,原来客户端代理被ITS封掉了 ,只得去查找设置代理访问的方法,原来代码很简单,只需要加入下面代码即可。
WebProxy _WP = new WebProxy(ProxyName,ProxyPort); _WP.BypassProxyOnLocal = true; ICredentials credentials = new NetworkCredential(UserName,UserKey,DomainName); _WP.Credentials = credentials; WebRequest _HWR = WebRequest.CreateDefault(new System.Uri(URL)); _HWR.Proxy = _WP; WebResponse _HRS = _HWR.GetResponse() ; 当然,MSDN上对于_HWR.Proxy = _WP;还有另外一个使用方式 GlobalProxySelection.Select = _WP;其实也就是设置全局的代理服务,不需要再一一设置,抓取页面数据就比较简单了。
Encoding encode = System.Text.Encoding.Default; StreamReader sr = new StreamReader( ReceiveStream, encode ); string HTMLContent = ; Char[] read = new Char[256]; int count = sr.Read( read, 0, 256 ); while (count > 0) { String str = new String(read, 0, count); HTMLContent += str; count = sr.Read(read, 0, 256); }
OK,这样就完成了代码设置我们的代理,直接通过程序来访问IE内容了~~
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全部代码:
private string LoadHTML(string ProxyName,int ProxyPort,string UserName,string UserKey, string DomainName,string URL) { //读取HTML内容 WebProxy _WP = new WebProxy(ProxyName,ProxyPort); _WP.BypassProxyOnLocal = true; ICredentials credentials = new NetworkCredential(UserName,UserKey,DomainName); _WP.Credentials = credentials; //GlobalProxySelection.Select = _WP; WebRequest _HWR = WebRequest.CreateDefault(new System.Uri(URL)); _HWR.Proxy = _WP; WebResponse _HRS = _HWR.GetResponse() ; Stream ReceiveStream = _HRS.GetResponseStream(); Encoding encode = System.Text.Encoding.Default; StreamReader sr = new StreamReader( ReceiveStream, encode ); string HTMLContent = ; Char[] read = new Char[256]; int count = sr.Read( read, 0, 256 ); while (count > 0) { String str = new String(read, 0, count); HTMLContent += str; count = sr.Read(read, 0, 256); } return HTMLContent; }
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