HttpWebRequest百度搜索问题

Question

string loginStr=string.Empty;
string getDate=string.Empty,postDate=string.Empty;
byte[] sendByte;
HttpWebRequest request=null;
HttpWebResponse response=null;
CookieContainer container=new CookieContainer();
CookieCollection collection=null;
Stream stream;
string cookieStr=string.Empty;
StreamReader streamReader;
string returnStr=string.Empty;
try{
loginStr=@"http://www.baidu.com/";
getDate=@"wd=aaaaaaaaaa";
sendByte=Encoding.UTF8.GetBytes(getDate);
request=(HttpWebRequest)WebRequest.Create(loginStr);
request.Method="GET";
request.ContentType="application/x-www-form-urlencoded";
request.ContentLength=sendByte.Length;
request.AllowAutoRedirect=false;
request.CookieContainer=container;
//request.CookieContainer.SetCookies(new Uri("http://www.baidu.com"),);
request.KeepAlive=true;
stream=request.GetRequestStream();
stream.Write(sendByte,0,sendByte.Length);
stream.Close();





response=(HttpWebResponse)request.GetResponse();
response.Cookies=request.CookieContainer.GetCookies(request.RequestUri);
collection=response.Cookies;
cookieStr=request.CookieContainer.GetCookieHeader(request.RequestUri);
streamReader=new StreamReader(response.GetResponseStream(),Encoding.GetEncoding("gb2312"));
returnStr=streamReader.ReadToEnd();
response.Close();
streamReader.Close();
}catch(Exception)
{
returnStr="22";
}
return returnStr;

}
大家帮我看看怎么看看哪里错了

Answer 1

string loginStr = string.Empty;
string getDate = string.Empty, postDate = string.Empty;
byte[] sendByte;
HttpWebRequest request = null;
HttpWebResponse response = null;
CookieContainer container = new CookieContainer();string cookieStr = string.Empty;
StreamReader streamReader;
string returnStr = string.Empty;loginStr = @"http://www.baidu.com/s?";
getDate = @"wd=aaaaaaaaaa";
loginStr += getDate;
sendByte = System.Text.UnicodeEncoding.GetEncoding("GB2312").GetBytes(getDate);
request = (HttpWebRequest)WebRequest.Create(loginStr);
request.Method = "GET";response = (HttpWebResponse)request.GetResponse();streamReader = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding("gb2312"));
returnStr = streamReader.ReadToEnd();
response.Close();
streamReader.Close();

Answer 2

谢谢 net_lover ，还有是不是，用GET提交的也可以改成用POST提交，如果改成POST要怎么改。

Answer 3

Post的例子
http://dotnet.aspx.cc/article/00000000-0000-0000-0000-00000000000c/read.aspx

Answer 4

悲剧，哪里错了
public string PostHtml(string targetURL,string postDate,string requestEncoding,string responseEncoding)
{
this.targetURL=targetURL;
this.postDate=postDate;
this.requestEncoding=requestEncoding;
this.responseEncoding=responseEncoding;


try
{
this.encoding=Encoding.GetEncoding(this.requestEncoding);
this.postBytes=this.encoding.GetBytes(this.postDate);


this.request=(HttpWebRequest)WebRequest.Create(this.targetURL);
this.request.CookieContainer=this.container;


this.request.ProtocolVersion=HttpVersion.Version10;
this.request.UserAgent="Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.2; Trident/4.0; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; InfoPath.2; CIBA; .NET4.0C; .NET4.0E)";
this.request.Accept="image/gif, image/jpeg, image/pjpeg, image/pjpeg, application/xaml+xml, application/vnd.ms-xpsdocument, application/x-ms-xbap, application/x-ms-application, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*";
this.request.Timeout=100000;



this.request.KeepAlive=true;
this.request.ContentType="application/x-www-form-urlencoded; charset=UTF-8";
//this.request








//this.request.ContentType="application/x-www-form-urlencoded";
this.request.ContentLength=this.postBytes.Length;
this.request.Method="POST";

Stream requestStream=this.request.GetRequestStream();
requestStream.Write(this.postBytes,0,this.postBytes.Length);
requestStream.Close();

this.response=(HttpWebResponse)this.request.GetResponse();
Stream responseStream=this.response.GetResponseStream();
this.encoding=Encoding.GetEncoding(this.responseEncoding);
StreamReader responseStreamReader=new StreamReader(responseStream,this.encoding);
this.returnStr=responseStreamReader.ReadToEnd();
responseStreamReader.Close();
responseStream.Close();




//request.AllowAutoRedirect=true;
//request.KeepAlive = true;
//request.Headers.Add("Accept-Language", "zh-cn");





}catch(Exception e)
{
returnStr=e.Message;
}
return this.returnStr;
}void Button1Click(object sender, System.EventArgs e)
{
//this.textBox1.Text=AutoLogin.PostData("s?wd=aaaaaaaaaaaaa","POST","http://www.baidu.com/");
//this.pictureBox1.Image=AutoLogin.GetImage(@"http://reg.qq.com/");
AutoLogin test=new AutoLogin();
MessageBox.Show(test.PostHtml(this.textBox1.Text,this.textBox2.Text,this.textBox3.Text,this.textBox4.Text));
//MessageBox.Show(AutoLogin.loginHtml());
}测试对象是： http://user.qukanshu.com/userlogin.php?jumpurl=http%3A//book.qukanshu.com/

Answer 5

this.textBox1.Text="http://user.qukanshu.com/api/userlogin.php"; this.textBox2.Text="username=账号&password=密码";