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這個軟件的原理是用HttpWebRequest提交帶驗證碼的網站。

蹇収33.png

要用post提交帶驗證碼的地址。先用HttpWebRequest進行請求以得到cookie，并保存起來在后面獲取驗證碼的時候使用.

該軟件是用C#編寫的，以下是程序源碼：

using System;
using System.Drawing;
using System.IO;
using System.Net;
using System.Text;
using System.Windows.Forms;

namespace 用POST提交帶驗證碼的網站
{
    public partial class FrmMain : Form
    {
        public FrmMain()
        {
            InitializeComponent();
        }

//用于保存cookie
CookieContainer cc = new CookieContainer();

        //獲取cookie
        private void GetCookie()
        {
            try
            {
                //要post提交的地址。先用HttpWebRequest進行請求以得到cookie，并保存起來在后面獲取驗證碼的時候使用
                Uri uri = new Uri("http://61.142.253.40:8085/Login.aspx");
                HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(uri);
                HttpWebResponse response = (HttpWebResponse)request.GetResponse();

                //將當前cookie存儲到CookieContainer中
                cc.Add(response.Cookies);
                response.Close();
            }
            catch { }
        }

        //讀取驗證碼圖片
        private void GetImage()
        {
            try
            {
                //驗證碼地址
                Uri uri = new Uri("http://61.142.253.40:8085/CheckCode.aspx");
                HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(uri);

                //設置前面請求時保存下來的cookie，以保證兩個請求是相同的，才不會出現驗證碼不同步的問題
                request.CookieContainer = cc;
                HttpWebResponse response = (HttpWebResponse)request.GetResponse();

//得到驗證碼數據流
Stream resStream = response.GetResponseStream();

                //初始化Bitmap圖片并在pictureBox1控件中顯示
                Bitmap image = new Bitmap(resStream);
                this.pictureBox1.Image = image;
            }
            catch { }
        }

        /// <summary>
        /// 提交數據
        /// </summary>
        /// <param name="userName">用戶名</param>
        /// <param name="passWord">密碼</param>
        /// <param name="code">驗證碼</param>
        /// <returns>提交數據后的返回值</returns>
        private string SubmitData(string userName, string passWord, string code)
        {
            try
            {
                string url = string.Format("http://61.142.253.40:8085/Ajax.aspx?action=Login&Name={0}&Password={1}&ucode={2}", userName, passWord, code);
                HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;

//設置cookie，保證請求同步
request.CookieContainer = cc;

                //獲取響應
                HttpWebResponse response = request.GetResponse() as HttpWebResponse;
                if (response.StatusCode == HttpStatusCode.OK)
                {
                    //注意這里要根據網站編碼格式變換
                    using (StreamReader sr = new StreamReader(response.GetResponseStream(), Encoding.GetEncoding("UTF-8")))
                    {
                        return sr.ReadToEnd();
                    }
                }
                else
                {
                    return response.StatusCode.ToString();
                }
            }
            catch
            {
                return null;
            }

}

private void Form1_Load(object sender, EventArgs e)
{

}

        private void btnSubmit_Click(object sender, EventArgs e)
        {
           txtResult.Text = SubmitData(txtUser.Text, txtPassword.Text, txtCode.Text);
        }

        private void lbWebSite_Click(object sender, EventArgs e)
        {
            try
            {
                System.Diagnostics.Process.Start("http://www.weixq.cn");
                System.Diagnostics.Process.Start("http://www.jfkjw.com");
            }
            catch { }
        }

        private void lbQQ_Click(object sender, EventArgs e)
        {
            try
            {
                System.Diagnostics.Process.Start("http://wpa.qq.com/msgrd?v=3&uin=240452625&site=qq&menu=yes");
            }
            catch { }
        }

        private void btnRefresh_Click(object sender, EventArgs e)
        {
            FrmMain_Load(null, null);
        }

        private void FrmMain_Load(object sender, EventArgs e)
        {
            //獲取cookie和驗證碼圖片
            GetCookie();
            GetImage();
        }
    }
}