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Code
using System;
using System.Net;
using System.IO;
using System.Text;
class Test
{
[STAThread]
static void Main(string[] args)
{
//
// TODO: 在此处添加代码以启动应用程序
//
string url = "http://localhost/csdn2/1.asp";
// <%
// if request("aa")="zhuye" then session("ok")="ok"
// if session("ok")="ok" then
// response.write("登录")
// else
// response.write("没有登录")
// end if
// %>
string indata = "aa=zhuye";
string outdata = "";
CookieContainer myCookieContainer = new CookieContainer();
//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();
//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();
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"
}
}
注释写得很明确了,不多罗嗦了。
补充:如果是以get方式登录的话,直接修改url就可以了,indate可以不写任何东西。(不要去修改
myHttpWebRequest.Method为GET),比如把asp文件修改为
if request.querystring("aa")="zhuye" then session("ok")="ok",只要修改url为
string url="http://localhost/csdn2/1.asp?aa=zhuye";即可。