站外提交表单

一、需要获取网站的cookie，用HttpWebRequest和HttpWebResponse即可获取

二、用抓包工具将需要提交站点的postDate的格式抓取下来，将其转化为参数

三、用HttpWebRequest和HttpWebResponse，将站点的header进行重写，并做模拟提交

四、用Stream获取登陆后站点的信息

 

示例代码：

Http.cs：

using System;using System.Collections.Generic;using System.IO;using System.Net;using System.Text;namespace LoginSdoDemo{ class Http { public static string GetHtml(string URL) { WebRequest wrt; wrt = WebRequest.Create(URL); wrt.Credentials = CredentialCache.DefaultCredentials; WebResponse wrp; wrp = wrt.GetResponse(); return new StreamReader(wrp.GetResponseStream(), Encoding.Default).ReadToEnd(); } public static string GetHtml(string URL, out string cookie) { HttpWebRequest wrt; wrt = (HttpWebRequest)HttpWebRequest.Create(URL); wrt.Credentials = CredentialCache.DefaultCredentials; wrt.CookieContainer = new CookieContainer(); HttpWebResponse wrp; wrp = (HttpWebResponse)wrt.GetResponse(); string html = new StreamReader(wrp.GetResponseStream(), Encoding.Default).ReadToEnd(); cookie = wrp.Headers.Get("Set-Cookie"); return html; } public static string GetHtml(string URL, string postData, string cookie, out string header) { return GetHtml("https://esales.9you.com/", URL, postData, cookie, out header); } public static string GetHtml(string server, string URL, string postData, string cookie, out string header) { byte[] byteRequest = Encoding.Default.GetBytes(postData); return GetHtml(server, URL, byteRequest, cookie, out header); } public static string GetHtml(string server, string URL, byte[] byteRequest, string cookie, out string header) { byte[] bytes = GetHtmlByBytes(server, URL, byteRequest, cookie, out header); Stream getStream = new MemoryStream(bytes); StreamReader streamReader = new StreamReader(getStream, Encoding.Default); string getString = streamReader.ReadToEnd(); streamReader.Close(); getStream.Close(); return getString; } public static byte[] GetHtmlByBytes(string server, string URL, byte[] byteRequest, string cookie,out string header) { long contentLength; HttpWebRequest httpWebRequest; HttpWebResponse webResponse; Stream getStream; httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(URL); CookieContainer co = new CookieContainer(); co.SetCookies(new Uri(server), cookie); httpWebRequest.CookieContainer = co; httpWebRequest.ContentType = "application/x-www-form-urlencoded"; httpWebRequest.Accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*"; httpWebRequest.Referer = "https://esales.9you.com/"; httpWebRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 1.1.4322)"; httpWebRequest.Method = "Post"; httpWebRequest.ContentLength = byteRequest.Length; Stream stream; stream = httpWebRequest.GetRequestStream(); stream.Write(byteRequest, 0, byteRequest.Length); stream.Close(); webResponse = (HttpWebResponse)httpWebRequest.GetResponse(); header = webResponse.Headers.ToString(); getStream = webResponse.GetResponseStream(); contentLength = httpWebRequest.ContentLength; byte[] outBytes = new byte[contentLength]; outBytes = ReadFully(getStream); getStream.Close(); return outBytes; } public static byte[] ReadFully(Stream stream) { byte[] buffer = new byte[128]; using (MemoryStream ms = new MemoryStream()) { while (true) { int read = stream.Read(buffer, 0, buffer.Length); if (read <= 0) return ms.ToArray(); ms.Write(buffer, 0, read); } } } public static string GetHtml(string URL, string cookie, out string header) { return GetHtml(URL, cookie, out header, "https://esales.9you.com/"); } public static string GetHtml(string URL, string cookie, out string header, string server) { HttpWebRequest httpWebRequest; HttpWebResponse webResponse; Stream getStream; StreamReader streamReader; string getString = ""; httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(URL); httpWebRequest.Accept = "*/*"; httpWebRequest.Referer = "https://esales.9you.com/"; CookieContainer co = new CookieContainer(); co.SetCookies(new Uri(server), cookie); httpWebRequest.CookieContainer = co; httpWebRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 1.1.4322)"; httpWebRequest.Method = "GET"; webResponse = (HttpWebResponse)httpWebRequest.GetResponse(); header = webResponse.Headers.ToString(); getStream = webResponse.GetResponseStream(); streamReader = new StreamReader(getStream, Encoding.GetEncoding("gb2312")); getString = streamReader.ReadToEnd(); streamReader.Close(); getStream.Close(); return getString; } }}

以久游esales系统为例，实现的自动登陆：

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;using System.IO;using System.Net;using mshtml;namespace LoginSdoDemo{ public partial class Form1 : Form { public Form1() { InitializeComponent(); //checkcode.ImageLocation = "https://esales.9you.com/seccode.php"; } private void button2_Click(object sender, EventArgs e) { string aspcookie = ""; string cookie = webBrowser1.Document.Cookie; string html = Http.GetHtml("https://esales.9you.com/", out aspcookie); aspcookie = aspcookie.Split(';')[0]; richTextBox1.AppendText("获得的Cookie：" + aspcookie+"/r/n"); //string lt = Getlt(html); string header = ""; string url1 = "https://esales.9you.com/loginQueryresult.php"; string postData = "spid=ywt****&spoper=&password=jjkjy****&dynpass=&checkcode=" + textBox3.Text; html = Http.GetHtml(url1, postData, cookie, out header); //login richTextBox1.AppendText(html); if (html.IndexOf("login2.asp") > 0) { MessageBox.Show("用户名或密码错误"); return; } html = Http.GetHtml("https://esales.9you.com/list.php", cookie, out header); richTextBox1.AppendText(html); if (html.IndexOf("login2.asp") > 0) { MessageBox.Show("登录失败。请重试"); return; } } private string Getlt(string html) { string str = html.Substring(html.IndexOf("?lt")); str = str.Substring(4); return str.Substring(0, str.IndexOf("&")); } private void button1_Click(object sender, EventArgs e) { string strId = "ywt****";//用户名 string strPassword = "jjkjy****";//密码 //string strsubmit = "YES"; ASCIIEncoding encoding = new ASCIIEncoding(); string postData = "spid=" + strId + "&spoper=&password=" + strPassword + "&dynpass=&checkcode=" + textBox3.Text; //postData += ("&Accept=" + strsubmit); byte[] data = encoding.GetBytes(postData); // Prepare web request... HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create("https://esales.9you.com/loginQueryresult.php"); myRequest.Method = "POST"; myRequest.ContentType = "application/x-www-form-urlencoded"; myRequest.ContentLength = data.Length; Stream newStream = myRequest.GetRequestStream(); // Send the data. newStream.Write(data, 0, data.Length); newStream.Close(); // Get response HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse(); StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.GetEncoding("gb2312")); string content = reader.ReadToEnd(); //Response.Write(content); richTextBox1.Text = content; } private void Form1_Load(object sender, EventArgs e) { } private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) { HTMLDocument html = (HTMLDocument)this.webBrowser1.Document.DomDocument; //下面代码中，获取图片的方式有很多，因为比较简单，我就不列举了，直接用ID来做为例子的 IHTMLControlElement img = (IHTMLControlElement)webBrowser1.Document.Images["seccode_1"].DomElement; IHTMLControlRange range = (IHTMLControlRange)((HTMLBody)html.body).createControlRange(); range.add(img); range.execCommand("Copy", false, null); img = null; range = null; html = null; if (Clipboard.ContainsImage()) { this.checkcode.Image = Clipboard.GetImage(); } else { MessageBox.Show("执行不成功"); } Clipboard.Clear(); checkcode.Image.Save(DateTime.Now.ToString("yyyyMMddHHmmss.Jpeg"), System.Drawing.Imaging.ImageFormat.Jpeg); } }}

窗体代码：

namespace LoginSdoDemo{ partial class Form1 { /// <summary> /// Required designer variable. /// </summary> private System.ComponentModel.IContainer components = null; /// <summary> /// Clean up any resources being used. /// </summary> /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param> protected override void Dispose(bool disposing) { if (disposing && (components != null)) { components.Dispose(); } base.Dispose(disposing); } #region Windows Form Designer generated code /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { this.button1 = new System.Windows.Forms.Button(); this.button2 = new System.Windows.Forms.Button(); this.label1 = new System.Windows.Forms.Label(); this.label2 = new System.Windows.Forms.Label(); this.richTextBox1 = new System.Windows.Forms.RichTextBox(); this.textBox1 = new System.Windows.Forms.TextBox(); this.textBox2 = new System.Windows.Forms.TextBox(); this.checkcode = new System.Windows.Forms.PictureBox(); this.textBox3 = new System.Windows.Forms.TextBox(); this.webBrowser1 = new System.Windows.Forms.WebBrowser(); ((System.ComponentModel.ISupportInitialize)(this.checkcode)).BeginInit(); this.SuspendLayout(); // // button1 // this.button1.Location = new System.Drawing.Point(33, 11); this.button1.Name = "button1"; this.button1.Size = new System.Drawing.Size(75, 21); this.button1.TabIndex = 0; this.button1.Text = "未登录"; this.button1.UseVisualStyleBackColor = true; this.button1.Click += new System.EventHandler(this.button1_Click); // // button2 // this.button2.Location = new System.Drawing.Point(656, 14); this.button2.Name = "button2"; this.button2.Size = new System.Drawing.Size(75, 21); this.button2.TabIndex = 3; this.button2.Text = "登录"; this.button2.UseVisualStyleBackColor = true; this.button2.Click += new System.EventHandler(this.button2_Click); // // label1 // this.label1.AutoSize = true; this.label1.Location = new System.Drawing.Point(321, 14); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(41, 12); this.label1.TabIndex = 2; this.label1.Text = "用户名"; // // label2 // this.label2.AutoSize = true; this.label2.Location = new System.Drawing.Point(492, 18); this.label2.Name = "label2"; this.label2.Size = new System.Drawing.Size(29, 12); this.label2.TabIndex = 3; this.label2.Text = "密码"; // // richTextBox1 // this.richTextBox1.Location = new System.Drawing.Point(2, 42); this.richTextBox1.Name = "richTextBox1"; this.richTextBox1.Size = new System.Drawing.Size(332, 441); this.richTextBox1.TabIndex = 4; this.richTextBox1.Text = ""; // // textBox1 // this.textBox1.Location = new System.Drawing.Point(370, 14); this.textBox1.Name = "textBox1"; this.textBox1.Size = new System.Drawing.Size(100, 21); this.textBox1.TabIndex = 1; // // textBox2 // this.textBox2.Location = new System.Drawing.Point(541, 16); this.textBox2.Name = "textBox2"; this.textBox2.PasswordChar = '*'; this.textBox2.Size = new System.Drawing.Size(100, 21); this.textBox2.TabIndex = 2; // // checkcode // this.checkcode.Location = new System.Drawing.Point(118, 11); this.checkcode.Name = "checkcode"; this.checkcode.Size = new System.Drawing.Size(100, 25); this.checkcode.TabIndex = 5; this.checkcode.TabStop = false; // // textBox3 // this.textBox3.Location = new System.Drawing.Point(224, 9); this.textBox3.Name = "textBox3"; this.textBox3.Size = new System.Drawing.Size(76, 21); this.textBox3.TabIndex = 6; // // webBrowser1 // this.webBrowser1.Location = new System.Drawing.Point(370, 43); this.webBrowser1.MinimumSize = new System.Drawing.Size(20, 20); this.webBrowser1.Name = "webBrowser1"; this.webBrowser1.Size = new System.Drawing.Size(381, 440); this.webBrowser1.TabIndex = 7; this.webBrowser1.Url = new System.Uri("https://esales.9you.com/", System.UriKind.Absolute); this.webBrowser1.DocumentCompleted += new System.Windows.Forms.WebBrowserDocumentCompletedEventHandler(this.webBrowser1_DocumentCompleted); // // Form1 // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(763, 485); this.Controls.Add(this.webBrowser1); this.Controls.Add(this.textBox3); this.Controls.Add(this.checkcode); this.Controls.Add(this.textBox2); this.Controls.Add(this.textBox1); this.Controls.Add(this.richTextBox1); this.Controls.Add(this.label2); this.Controls.Add(this.label1); this.Controls.Add(this.button2); this.Controls.Add(this.button1); this.Name = "Form1"; this.Text = "纵横天下模拟登录"; this.Load += new System.EventHandler(this.Form1_Load); ((System.ComponentModel.ISupportInitialize)(this.checkcode)).EndInit(); this.ResumeLayout(false); this.PerformLayout(); } #endregion private System.Windows.Forms.Button button1; private System.Windows.Forms.Button button2; private System.Windows.Forms.Label label1; private System.Windows.Forms.Label label2; private System.Windows.Forms.RichTextBox richTextBox1; private System.Windows.Forms.TextBox textBox1; private System.Windows.Forms.TextBox textBox2; private System.Windows.Forms.PictureBox checkcode; private System.Windows.Forms.TextBox textBox3; private System.Windows.Forms.WebBrowser webBrowser1; }}

 

注：该程序需要引用一组com组件

Microsoft HTML Object Library