通过HttpWebRequest实现模拟登陆

2022-11-01 13:52:08

1>通过HttpWebRequest模拟登陆

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Net.Security;

using System.Security.Cryptography.X509Certificates;

using System.DirectoryServices.Protocols;

using System.ServiceModel.Security;

using System.Net;

using System.IO;

using System.IO.Compression;

using System.Text.RegularExpressions;

namespace BaiduCang

{

    /// <summary>

    /// 有关HTTP请求的辅助类

    /// </summary>

    public class HttpWebResponseUtility

    {

        private static readonly string DefaultUserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";

        /// <summary>

        /// 创建GET方式的HTTP请求

        /// </summary>

        /// <param name="url">请求的URL</param>

        /// <param name="timeout">请求的超时时间</param>

        /// <param name="userAgent">请求的客户端浏览器信息，可以为空</param>

        /// <param name="cookies">随同HTTP请求发送的Cookie信息，如果不需要身份验证可以为空</param>

        /// <returns></returns>

        public static HttpWebResponse CreateGetHttpResponse(string url, int? timeout, string userAgent, CookieCollection cookies)

        {

            if (string.IsNullOrEmpty(url))

            {

                throw new ArgumentNullException("url");

            }

            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;

            request.Method = "GET";

            request.UserAgent = DefaultUserAgent;

            if (!string.IsNullOrEmpty(userAgent))

            {

                request.UserAgent = userAgent;

            }

            if (timeout.HasValue)

            {

                request.Timeout = timeout.Value;

            }

            if (cookies != null)

            {

                request.CookieContainer = new CookieContainer();

                request.CookieContainer.Add(cookies);

            }

            return request.GetResponse() as HttpWebResponse;

        }

        /// <summary>

        /// 创建POST方式的HTTP请求

        /// </summary>

        /// <param name="url">请求的URL</param>

        /// <param name="parameters">随同请求POST的参数名称及参数值字典</param>

        /// <param name="timeout">请求的超时时间</param>

        /// <param name="userAgent">请求的客户端浏览器信息，可以为空</param>

        /// <param name="requestEncoding">发送HTTP请求时所用的编码</param>

        /// <param name="cookies">随同HTTP请求发送的Cookie信息，如果不需要身份验证可以为空</param>

        /// <returns></returns>

        public static HttpWebResponse CreatePostHttpResponse(string url, IDictionary<string, string> parameters, int? timeout, string userAgent, Encoding requestEncoding, CookieCollection cookies)

        {

            if (string.IsNullOrEmpty(url))

            {

                throw new ArgumentNullException("url");

            }

            if (requestEncoding == null)

            {

                throw new ArgumentNullException("requestEncoding");

            }

            HttpWebRequest request = null;

            //如果是发送HTTPS请求

            if (url.StartsWith("https", StringComparison.OrdinalIgnoreCase))

            {

                ServicePointManager.ServerCertificateValidationCallback = new RemoteCertificateValidationCallback(CheckValidationResult);

                request = WebRequest.Create(url) as HttpWebRequest;

                request.ProtocolVersion = HttpVersion.Version10;

            }

            else

            {

                request = WebRequest.Create(url) as HttpWebRequest;

            }

            request.Method = "POST";

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

            request.AllowAutoRedirect = false;

            if (!string.IsNullOrEmpty(userAgent))

            {

                request.UserAgent = userAgent;

            }

            else

            {

                request.UserAgent = DefaultUserAgent;

            }

            if (timeout.HasValue)

            {

                request.Timeout = timeout.Value;

            }

            if (cookies != null)

            {

                request.CookieContainer = new CookieContainer();

                request.CookieContainer.Add(cookies);

            }

            //如果需要POST数据

            if (!(parameters == null || parameters.Count == 0))

            {

                StringBuilder buffer = new StringBuilder();

                int i = 0;

                foreach (string key in parameters.Keys)

                {

                    if (i > 0)

                    {

                        buffer.AppendFormat("&{0}={1}", key, parameters[key]);

                    }

                    else

                    {

                        buffer.AppendFormat("{0}={1}", key, parameters[key]);

                    }

                    i++;

                }

                byte[] data = requestEncoding.GetBytes(buffer.ToString());

                using (Stream stream = request.GetRequestStream())

                {

                    stream.Write(data, 0, data.Length);

                }

            }

            return request.GetResponse() as HttpWebResponse;

        }

        private static bool CheckValidationResult(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors errors)

        {

            return true; //总是接受

        }

        /// <summary>

        /// 获取post中input的值

        /// </summary>

        /// <param name="content">返回的html</param>

        /// <returns></returns>

        public static Dictionary<string, string> GetPostValuesFromContent(string content)

        {

            Dictionary<string, string> dics = new Dictionary<string, string>();

            StringBuilder sbPattern = new StringBuilder();

            sbPattern.Append("<input").Append("[^>]*?").Append("/?>");

            Regex regex = new Regex(sbPattern.ToString());

            MatchCollection matchList = regex.Matches(content);

            foreach (Match match in matchList)

            {

                string inputValue = match.Groups[0].Value;

                sbPattern = new StringBuilder();

                sbPattern.Append("name=\"").Append("([^\"]*?)").Append("\"");

                regex = new Regex(sbPattern.ToString());

                string name = regex.Match(inputValue).Groups[1].Value;

                sbPattern = new StringBuilder();

                sbPattern.Append("value=\"").Append("([^\"]*?)").Append("\"");

                regex = new Regex(sbPattern.ToString());

                string value = regex.Match(inputValue).Groups[1].Value;

                dics.Add(name, System.Web.HttpContext.Current.Server.UrlEncode(value));

            }

            return dics;

        }

        /// <summary>

        /// 获取post中input的值

        /// </summary>

        /// <param name="content">返回的html</param>

        /// <returns></returns>

        public static Dictionary<string, string> GetPostValuesFromUrl(string url)

        {

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();

            Stream responseStream = response.GetResponseStream();

            StreamReader reader = new StreamReader(responseStream, Encoding.UTF8);

            string content = reader.ReadToEnd();

            reader.Close();

            responseStream.Close();

            return GetPostValuesFromContent(content);

        }

        /// <summary>

        /// 从Headers的Cookie中获取到系统的cookie

        /// </summary>

        /// <param name="setCookie">headers中的cookie字符串</param>

        /// <param name="cookieName">系统cookie的name</param>

        /// <returns></returns>

        public static string GetCookieFromSetCookie(string setCookie, string cookieName)

        {

            StringBuilder sbPattern = new StringBuilder();

            sbPattern.AppendFormat("{0}=", cookieName).Append("(.*?)").Append(";");

            Regex regex = new Regex(sbPattern.ToString());

            Match match = regex.Match(setCookie);

            return match.Groups[1].Value;

        }

        /// <summary>

        /// 获取登陆后的跳转页面的html

        /// </summary>

        /// <param name="cookieName">系统cookie的name</param>

        /// <param name="cookieValue">系统cookie的value</param>

        /// <param name="redirectUrl">登陆后跳转的url</param>

        /// <returns></returns>

        public static string GetRedirctUrlHtml(string cookieName, string cookieValue, string redirectUrl, Encoding encoding)

        {

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(redirectUrl);

            request.Method = "GET";

            request.Headers.Add("Cookie", cookieName + "=" + cookieValue);

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();

            Stream stream = response.GetResponseStream();

            StreamReader reader = new StreamReader(stream, encoding);

            return reader.ReadToEnd();

        }

    }

}

　　

2>模拟登陆demo,直接从项目中挖出来的，实现的模拟登陆客户的oa系统和erp系统的功能，然后审核代办消息，审核的功能未实现。代码实现的是模拟登陆成功后，获取跳转后的页面的html。代码中实际地址和账户非真实数据。

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Text;

using System.Net;

using BaiduCang;

using System.IO;

using System.Text.RegularExpressions;

public partial class Default2 : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

        //LoginJsjd();

        //LoginOA();

        LoginErp();

    }

    public void LoginJsjd()

    {

        string loginUrl = "http://192.168.0.2/jsjd/login.aspx";

        string redirectUrl = "http://192.168.0.2/jsjd/wfi.ashx?act=audit&id=e77ff6a5-4e17-4fb6-b696-82bf5b3c717f&msgid=bc5b6d50-f315-414e-841f-e382ca1a4f8e&comment=&result=Approve";

        Encoding encoding = Encoding.GetEncoding("gb2312");

        string cookieName = ".ASPXAUTH";

        Dictionary<string, string> parameters = new Dictionary<string, string>();

        parameters.Add("txtName", "8888");

        parameters.Add("txtPassword", "8888");

        Response.Write(Login(loginUrl, loginUrl, redirectUrl, cookieName, encoding, parameters));

    }

    public void LoginOA()

    {

        string loginUrl = "http://192.168.0.2:8090/dcwork/j_bsp_security_check/up";

        string redirectUrl = "http://192.168.0.2:8090/dcwork/processlist.cmd?method=taskinfoportal";

        Encoding encoding = Encoding.GetEncoding("gb2312");

        string cookieName = "JSESSIONID";

        Dictionary<string, string> parameters = new Dictionary<string, string>();

        parameters.Add("j_username", "888888");

        parameters.Add("j_password", "888888");

        Response.Write(Login(loginUrl, loginUrl, redirectUrl, cookieName, encoding, parameters));

    }

    public void LoginErp()

    {

        string loginUrl = "http://192.168.0.2:8000/OA_HTML/RF.jsp?function_id=26668&resp_id=-1&resp_appl_id=-1&security_group_id=0&lang_code=ZHS&params=KQ0ueFd3h5ncJDQ0.532EQ&oas=NqL6dDNwywXNVCwleKSBLw";

        string portUrl = "http://192.168.0.2:8000/OA_HTML/OA.jsp?page=/oracle/apps/fnd/sso/login/webui/MainLoginPG&_ri=0&_ti=128180147&language_code=ZHS&requestUrl=&oapc=18&oas=zlyIwYnA_a_ouuYU0LTLzw..";

        string redirectUrl = "http://192.168.0.2:8000/OA_HTML/OA.jsp?OAFunc=OAHOMEPAGE";

        Encoding encoding = Encoding.GetEncoding("gb2312");

        string cookieName = "JSESSIONID";

        Dictionary<string, string> parameters = new Dictionary<string, string>();

        parameters.Add("usernameField", "888888");

        parameters.Add("passwordField", "888888");

        Response.Write(Login(loginUrl, portUrl, redirectUrl, cookieName, encoding, parameters));

    }

    /// <summary>

    /// 登陆后返回指定页面的html

    /// </summary>

    /// <param name="loginUrl">登陆页面url</param>

    /// <param name="portUrl">登陆提交的post页面url</param>

    /// <param name="redirectUrl">登陆成功后跳转的页面url</param>

    /// <param name="cookieName">cookie名称</param>

    /// <param name="encoding">编码方式</param>

    /// <param name="nameAndPassword">用户名和密码对应的文本框的name和值</param>

    /// <returns></returns>

    public string Login(string loginUrl, string portUrl, string redirectUrl, string cookieName, Encoding encoding, Dictionary<string, string> nameAndPassword)

    {

        Dictionary<string, string> parameters = HttpWebResponseUtility.GetPostValuesFromUrl(loginUrl);

        //给参数字典中的用户名和密码赋值

        foreach (var item in nameAndPassword)

        {

            parameters[item.Key] = item.Value;

        }

        foreach (var item in parameters)

        {

            Response.Write(string.Format("{0}:{1}", item.Key, item.Value));

            Response.Write("</br>");

        }

        HttpWebResponse response = HttpWebResponseUtility.CreatePostHttpResponse(

         portUrl, parameters, null, null, encoding, null);

        string setCookie = response.Headers["Set-Cookie"];

        string cookie = HttpWebResponseUtility.GetCookieFromSetCookie(setCookie, cookieName);

        return HttpWebResponseUtility.GetRedirctUrlHtml(cookieName, cookie, redirectUrl, encoding);

    }

}

　　

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