java 天猫模拟登陆_爬虫登录 最好是天猫爬虫登录 有经验的大神请赐教

public String Post(string url, stringpostData)

{try{#region 登录

string loginurl = "http://10.16.230.26:8080/login.aspx?ReturnUrl=%2flogout.aspx";byte[] loginByteArray = Encoding.UTF8.GetBytes(postData); //转化

CookieContainer myCookieContainer = newCookieContainer();//新建一个CookieContainer来存放Cookie集合

HttpWebRequest myHttpWebRequest =(HttpWebRequest)WebRequest.Create(loginurl);//新建一个HttpWebRequest

myHttpWebRequest.ContentType = "application/x-www-form-urlencoded";

myHttpWebRequest.ContentLength=loginByteArray.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();//Send the data.

myRequestStream.Write(loginByteArray, 0, loginByteArray.Length); //写入参数

myRequestStream.Close();//把数据写入HttpWebRequest的Request流

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= newStreamReader(myResponseStream, Encoding.UTF8);//把数据从HttpWebResponse的Response流中读出

myStreamReader.Close();

myResponseStream.Close();#endregion

byte[] byteArray = Encoding.UTF8.GetBytes(postData); //转化//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.Headers.Add("Accept-Language: zh-cn");

myHttpWebRequest.Headers.Add("UA-CPU: x86");

myHttpWebRequest.Headers.Add("Accept-Encoding: gzip, deflate");

myHttpWebRequest.UserAgent= "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Embedded Web Browser from: /; InfoPath.2; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022)";

myHttpWebRequest.ContentType= "application/x-www-form-urlencoded";

myHttpWebRequest.ContentLength=byteArray.Length;

myHttpWebRequest.Method= "POST";

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

myRequestStream=myHttpWebRequest.GetRequestStream();//Send the data.

myRequestStream.Write(byteArray, 0, byteArray.Length); //写入参数

myRequestStream.Close();

myHttpWebResponse=(HttpWebResponse)myHttpWebRequest.GetResponse();

myHttpWebResponse.Cookies=myCookieContainer.GetCookies(myHttpWebRequest.RequestUri);

myResponseStream=myHttpWebResponse.GetResponseStream();

myStreamReader= newStreamReader(myResponseStream, Encoding.UTF8);string outdata =myStreamReader.ReadToEnd();

myStreamReader.Close();

myResponseStream.Close();returnoutdata;

}catch(Exception ex)

{returnString.Empty;

}

}