C# 模拟登录（带验证码），求助啊！高手们请赐教 :(
小弟刚入门，想写个HttpWebRequest类型的自动登录工具，然后获取网页的内容，但是搞了一个星期都不行，高手们能不能帮下忙看看是错在哪呢？
网站登录页：http://laishangdai.com/member/common/login/
网站验证码连接：http://laishangdai.com/Member/common/verify?t=0.49116053992461844
抓包后真实地址是：http://laishangdai.com/Member/common/actlogin/
我具体的方法是：
（1）先用HttpWebRequest打开网站，保存好cookies
（2）然后再附带上cookies获取验证码
（3）最后是带上cookies、验证码、postData发送后登录
但是怎么也登录不成功，只返回“{"status":0,"message":"\u9a8c\u8bc1\u7801\u9519\u8bef!"}” 这种信息，郁闷呀。。。。
带上函数：
public static string GetCookiesHasCode(string strLoginURL, string strRefererURL, string strHttpLogin, string encodingcode, string cookieHeader)
{
ASCIIEncoding encoding = new ASCIIEncoding();
byte[] data = encoding.GetBytes(strHttpLogin);//一定要经过encoding才能发送
try
{
// Prepare web request...
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(strLoginURL);
myRequest.Method = "POST";
myRequest.Proxy = null;
myRequest.Timeout = 500;
myRequest.ContentType = "application/x-www-form-urlencoded";
myRequest.ContentLength = data.Length;
myRequest.Referer = strRefererURL;
myRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 2.0.50727)";
myRequest.KeepAlive = true;
myRequest.AllowAutoRedirect = true;
myRequest.Accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-excel, application/msword, application/x-shockwave-flash, */*";
myRequest.Headers.Add("cookie:" + cookieHeader);
CookieContainer myCookieContainer = new CookieContainer();
myRequest.CookieContainer = myCookieContainer;
Stream newStream = myRequest.GetRequestStream();
// Send the data.
newStream.Write(data, 0, data.Length);
newStream.Close();
// Get response
HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
// Get cookies
string mycookieHeader = myRequest.CookieContainer.GetCookieHeader(new Uri(strLoginURL));
myResponse.Close();
return mycookieHeader;
}
catch (Exception e)
{
return e.Message;
}
}
public void GetCodeImg(string vacodeURL, string referUrl, string cookieHeader, string acc)
{
try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(vacodeURL);
request.Timeout = 500;
request.ServicePoint.ConnectionLimit = 100;
request.ReadWriteTimeout = 500;
request.Proxy = null;
request.Method = "GET";
request.Headers.Add("cookie:" + cookieHeader);
request.Referer = referUrl;
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
if (response.StatusCode != HttpStatusCode.OK)
return;
Stream resStream = response.GetResponseStream();
this.pictureBox1.Image = new Bitmap(resStream);
response.Close();
resStream.Close();
}
catch
{
return;
}
既然你喜欢string的cookieprivate void button1_Click(object sender, EventArgs e)
{
pictureBox1.Image = doGetImg("http://laishangdai.com/Member/common/verify?t=0.7488636498533732", out cookie);
}
string cookie = string.Empty;
public static Image doGetImg(string Url, out string bCookie)
{
bCookie = string.Empty;
try
{
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(Url.ToString());
myRequest.ServicePoint.Expect100Continue = true;
myRequest.Method = "GET";
myRequest.Timeout = 30000;
myRequest.KeepAlive = true;
myRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0)";
myRequest.ContentType = "application/x-www-form-urlencoded";
//gzip, deflate
HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
bCookie = myResponse.Headers["Set-Cookie"];
return Bitmap.FromStream(myResponse.GetResponseStream());
}
catch //(Exception ex)
{
return null;
}
}
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Net;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Formatters.Binary;
using System.Text;
using System.Windows.Forms;
namespace CsdnTest1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
TestCookie sc = new TestCookie();
private void button1_Click(object sender, EventArgs e)
{
pictureBox1.Image = doGetImg("http://laishangdai.com/Member/common/verify?t=0.7488636498533732", sc);
}
private void button2_Click(object sender, EventArgs e)
{
string poststr = "sUserName=" + textBox1.Text.Trim() + "&sPassword=" + textBox2.Text.Trim() + "&sVerCode=" + textBox4.Text.Trim() + "&Keep=0";
byte[] data = System.Text.Encoding.UTF8.GetBytes(poststr);
textBox3.Text = doPost("http://laishangdai.com/Member/common/actlogin/", data, sc, "utf-8", "http://laishangdai.com/member/common/login/");
}
public static string doPost(string Url, byte[] postData, TestCookie bCookie, String encodingFormat, String referer)
{
try
{
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(Url.ToString());
myRequest.CookieContainer = bCookie.mycookie;
myRequest.Method = "POST";
myRequest.Timeout = 30000;
myRequest.KeepAlive = true;
if (referer != "")
myRequest.Referer = referer;
myRequest.Headers["Cache-control"] = "no-cache";
myRequest.Headers["Accept-Language"] = "zh-cn";
myRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; Trident/4.0; GTB7.4; GTB7.1; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; InfoPath.2)";
myRequest.ContentType = "application/x-www-form-urlencoded";
myRequest.Accept = "*/*";
myRequest.ContentLength = postData.Length;
Stream newStream = myRequest.GetRequestStream();
newStream.Write(postData, 0, postData.Length);
newStream.Close();
HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
bCookie.upcookie(myResponse.Cookies);
StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.GetEncoding(encodingFormat));
string outdata = reader.ReadToEnd();
reader.Close();
if (!outdata.Contains("基础连接已经关闭: 连接被意外关闭") && !outdata.Contains("无法连接到远程服务器") && !outdata.Contains("基础连接已经关闭: 接收时发生错误。"))
return outdata;
else
return "基础连接已经关闭: 连接被意外关闭";
}
catch (Exception ex)
{
if (!ex.Message.Contains("基础连接已经关闭: 连接被意外关闭") && !ex.Message.Contains("无法连接到远程服务器") && !ex.Message.Contains("基础连接已经关闭: 接收时发生错误。"))
return ex.Message;
else
return "基础连接已经关闭: 连接被意外关闭";
}
}
public static Image doGetImg(string Url, TestCookie bCookie)
{
try
{
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(Url.ToString());
myRequest.ServicePoint.Expect100Continue = true;
myRequest.CookieContainer = bCookie.mycookie;
myRequest.Method = "GET";
myRequest.Timeout = 30000;
myRequest.KeepAlive = true;//modify by yang
myRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0)";
myRequest.ContentType = "application/x-www-form-urlencoded";
HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
bCookie.upcookie(myResponse.Cookies);
return Bitmap.FromStream(myResponse.GetResponseStream());
}
catch
{
return null;
}
}
public class TestCookie
{
public CookieContainer mycookie = new CookieContainer();//定义cookie容器
public Object obj = new Object();
public byte[] byt = new byte[1];
public void upcookie(CookieCollection cookie)
{
for (int i = 0; i < cookie.Count; i++)
{
mycookie.Add(cookie[i]);
}
obj = mycookie;
byt = ObjectToBytes(obj);
}
/**/
/// <summary>
/// 将一个object对象序列化，返回一个byte[]
/// </summary>
/// <param name="obj">能序列化的对象</param>
/// <returns></returns>
public static byte[] ObjectToBytes(object obj)
{
using (MemoryStream ms = new MemoryStream())
{
IFormatter formatter = new BinaryFormatter();
formatter.Serialize(ms, obj);
return ms.GetBuffer();
}
}
/**/
/// <summary>
/// 将一个序列化后的byte[]数组还原
/// </summary>
/// <param name="Bytes"></param>
/// <returns></returns>
public object BytesToObject(byte[] Bytes)
{
using (MemoryStream ms = new MemoryStream(Bytes))
{
IFormatter formatter = new BinaryFormatter();
return formatter.Deserialize(ms);
}
}
public CookieContainer getcookie()
{
return mycookie;
}
}
}
}
