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  • c#向某网址Post信息,并得到Cookies

    using System.Net;
    using System.IO;
    using System.Text;
    [STAThread]
    static void Main(string[] args)
    {

    string url="http://hi.baidu.com/yimeng3025/test.asp";

    string indata="aa=zhuye";
    string outdata="";
    CookieContainer myCookieContainer=new CookieContainer();
    字串8

    //新建一个CookieContainer来存放Cookie集合
    HttpWebRequest myHttpWebRequest=(HttpWebRequest)WebRequest.Create(url);
    //新建一个HttpWebRequest
    myHttpWebRequest.ContentType="application/x-www-form-urlencoded";
    myHttpWebRequest.ContentLength=indata.Length;
    myHttpWebRequest.Method="POST";
    myHttpWebRequest.CookieContainer=myCookieContainer;
    //设置HttpWebRequest的CookieContainer为刚才建立的那个myCookieContainer
    Stream myRequestStream=myHttpWebRequest.GetRequestStream();
    StreamWriter myStreamWriter=new StreamWriter(myRequestStream,Encoding.GetEncoding("gb2312"));
    myStreamWriter.Write(indata);
    //把数据写入HttpWebRequest的Request流
    myStreamWriter.Close();
    myRequestStream.Close();
    //关闭打开对象
    HttpWebResponse myHttpWebResponse=(HttpWebResponse)myHttpWebRequest.GetResponse();
    字串9

    //新建一个HttpWebResponse
    myHttpWebResponse.Cookies=myCookieContainer.GetCookies(myHttpWebRequest.RequestUri);
    //获取一个包含url的Cookie集合的CookieCollection
    Stream myResponseStream=myHttpWebResponse.GetResponseStream();
    StreamReader myStreamReader=new StreamReader(myResponseStream,Encoding.GetEncoding("gb2312"));
    outdata=myStreamReader.ReadToEnd();
    //把数据从HttpWebResponse的Response流中读出
    myStreamReader.Close();
    myResponseStream.Close();
    Console.WriteLine(outdata);
    //显示"登录"

    //拿到了Cookie,再进行请求就能直接读取到登录后的内容了
    myHttpWebRequest=(HttpWebRequest)WebRequest.Create(url);
    myHttpWebRequest.CookieContainer=myCookieContainer;//*
    //刚才那个CookieContainer已经存有了Cookie,把它附加到HttpWebRequest中则能直接通过验证
    myHttpWebResponse=(HttpWebResponse)myHttpWebRequest.GetResponse();
    字串1


    myHttpWebResponse.Cookies=myCookieContainer.GetCookies(myHttpWebRequest.RequestUri);
    myResponseStream=myHttpWebResponse.GetResponseStream();
    myStreamReader=new StreamReader(myResponseStream,Encoding.GetEncoding("gb2312"));
    outdata=myStreamReader.ReadToEnd();
    myStreamReader.Close();
    myResponseStream.Close();
    Console.WriteLine(outdata);
    //再次显示"登录"
    //如果把*行注释调,就显示"没有登录"
    }

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  • 原文地址:https://www.cnblogs.com/kenter/p/1599604.html
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