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站外登录的问题

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悬赏园豆:20 [已解决问题] 解决于 2010-08-13 08:45

参考这个 实现站外登录博客园:http://www.cnblogs.com/anjou/archive/2007/10/15/923770.html#1067574

返回的login.aspx 页面 html内容显示的是登录状态,可打开浏览器还是未登录,请问这个是什么原因?相关代码


CookieContainer cookieContainer
= new CookieContainer();

///////////////////////////////////////////////////
// 1.打开 MyLogin.aspx 页面,获得 GetVeiwState & EventValidation
///////////////////////////////////////////////////
// 设置打开页面的参数
string URI = "http://passport.cnblogs.com/login.aspx";
HttpWebRequest request
= WebRequest.Create(URI) as HttpWebRequest;
request.Method
= "GET";
request.KeepAlive
= false;

// 接收返回的页面
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
System.IO.Stream responseStream
= response.GetResponseStream();
System.IO.StreamReader reader
= new System.IO.StreamReader(responseStream, Encoding.UTF8);
string srcString = reader.ReadToEnd();

// 获取页面的 VeiwState
string viewStateFlag = "id=\"__VIEWSTATE\" value=\"";
int i = srcString.IndexOf(viewStateFlag) + viewStateFlag.Length;
int j = srcString.IndexOf("\"", i);
string viewState = srcString.Substring(i, j - i);

// 获取页面的 EventValidation
string eventValidationFlag = "id=\"__EVENTVALIDATION\" value=\"";
i = srcString.IndexOf(eventValidationFlag) + eventValidationFlag.Length;
j
= srcString.IndexOf("\"", i);
string eventValidation = srcString.Substring(i, j - i);


///////////////////////////////////////////////////
// 2.自动填充并提交 MyLogin.aspx 页面
///////////////////////////////////////////////////
// 提交按钮的文本
string submitButton = "登 录";

// 用户名和密码
string userName = "11";
string password = "22";

// 将文本转换成 URL 编码字符串
viewState = System.Web.HttpUtility.UrlEncode(viewState);
eventValidation
= System.Web.HttpUtility.UrlEncode(eventValidation);
submitButton
= System.Web.HttpUtility.UrlEncode(submitButton);

// 要提交的字符串数据。格式形如:user=uesr1&password=123
string formatString = "tbUserName={0}&tbPassword={1}&btnLogin={2}&__VIEWSTATE={3}&__EVENTVALIDATION={4}";
string postString = string.Format(formatString, userName, password, submitButton, viewState, eventValidation);

// 将提交的字符串数据转换成字节数组
byte[] postData = Encoding.ASCII.GetBytes(postString);

// 设置提交的相关参数
request = WebRequest.Create(URI) as HttpWebRequest;
request.Method
= "POST";
request.KeepAlive
= false;
request.ContentType
= "application/x-www-form-urlencoded";
request.CookieContainer
= cookieContainer;
request.ContentLength
= postData.Length;

// 提交请求数据
System.IO.Stream outputStream = request.GetRequestStream();
outputStream.Write(postData,
0, postData.Length);
outputStream.Close();

// 接收返回的页面
response = request.GetResponse() as HttpWebResponse;
responseStream
= response.GetResponseStream();
reader
= new System.IO.StreamReader(responseStream, Encoding.UTF8);
srcString
= reader.ReadToEnd();

///////////////////////////////////////////////////
// 3.打开 Default.aspx 页面
///////////////////////////////////////////////////
// 设置打开页面的参数
URI = "http://passport.cnblogs.com/login.aspx";
request
= WebRequest.Create(URI) as HttpWebRequest;
request.Method
= "GET";
request.KeepAlive
= false;
request.CookieContainer
= cookieContainer;

// 接收返回的页面
response = request.GetResponse() as HttpWebResponse;
responseStream
= response.GetResponseStream();
reader
= new System.IO.StreamReader(responseStream, Encoding.UTF8);
srcString
= reader.ReadToEnd();

 

 

clound的主页 clound | 菜鸟二级 | 园豆:481
提问于:2010-08-07 11:15
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最佳答案
0

外部登陆,你收到成功登陆的信息后应该存一下cookie吧?

收获园豆:20
Dozer | 初学一级 |园豆:30 | 2010-08-07 12:16
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