using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web;
using System.Net;
using System.IO;
using System.Data;
namespace HTTPHELPER{
public class ELOGN_LOGIN {
public static CookieContainer container = null;
//存储验证码cookie #region 登录 public string requestM(string uName,string passwd,string vaildate) {
HttpWebRequest request = null;
HttpWebResponse response = null;
try {
request = (HttpWebRequest)HttpWebRequest.Create("https://secure.elong.com/passport/ajax/elongLogin");
request.Method = "Post";
request.ContentType = "application/x-www-form-urlencoded;
charset=UTF-8";
request.UserAgent = "Mozilla/5.0 (Windows NT 10.0;
WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36";
request.AllowAutoRedirect = true;
request.CookieContainer = container;
//获取验证码时候获取到的cookie会附加在这个容器里面 request.KeepAlive = true;
//建立持久性连接 //整数据 string postData = string.Format("userName={
0}
&passwd={
1}
&validateCode={
2}
&rememberMe=true", uName, passwd, vaildate);
ASCIIEncoding encoding = new ASCIIEncoding();
byte[] bytepostData = encoding.GetBytes(postData);
request.ContentLength = bytepostData.Length;
//发送数据 using结束代码段释放 using (Stream requestStm = request.GetRequestStream()) {
requestStm.Write(bytepostData, 0, bytepostData.Length);
}
//响应 response = (HttpWebResponse)request.GetResponse();
string text = string.Empty;
using (Stream responseStm = response.GetResponseStream()) {
StreamReader redStm = new StreamReader(responseStm, Encoding.UTF8);
text = redStm.ReadToEnd();
}
return text;
}
catch (Exception ex) {
var msg = ex.Message;
return msg;
}
}
#endregion #region 获取验证码 public Stream getCodeStream(string codeUrl) {
//验证码请求 HttpWebRequest request = (HttpWebRequest)WebRequest.Create(codeUrl);
request.Method = "GET";
request.ContentType = "application/x-www-form-urlencoded";
request.UserAgent = "Mozilla/5.0 (Windows NT 6.1;
WOW64;
rv:5.0.1) Gecko/20100101 Firefox/5.0.1";
request.Accept = "image/webp,*/*;
q=0.8";
request.CookieContainer = new CookieContainer();
//!Very Important.!!! container = request.CookieContainer;
var c = request.CookieContainer.GetCookies(request.RequestUri);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
response.Cookies = container.GetCookies(request.RequestUri);
Stream stream = response.GetResponseStream();
return stream;
}
}
#endregion}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using HTTPHELPER;
namespace WindowsFormsApplication8{
public partial class ELONG_LOGIN_FORM : Form {
public ELONG_LOGIN_FORM() {
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e) {
ELOGN_LOGIN elongLogin = new ELOGN_LOGIN();
var rmsg = elongLogin.requestM(txtuserName.Text,txtPassword.Text,txtVaildata.Text);
MessageBox.Show(rmsg);
}
private void ELONG_LOGIN_FORM_Load(object sender, EventArgs e) {
ReflshPicImage();
//更新验证码 }
//更新验证码 public void ReflshPicImage() {
string codeUrl = "https://secure.elong.com/passport/getValidateCode";
ELOGN_LOGIN agent = new ELOGN_LOGIN();
Stream stmImage = agent.getCodeStream(codeUrl);
picValidate.Image = Image.FromStream(stmImage);
}
private void btnReValidate_Click(object sender, EventArgs e) {
ReflshPicImage();
//更新验证码 }
private void picValidate_Click(object sender, EventArgs e) {
ReflshPicImage();
//更新验证码 }
}
}