模拟登陆

httpwebrequest 模拟登录获取cookies2个类,一个基类,一个构建头信息调用类关于如何获取到post中的内容,你之需要用http抓包工具把你与目标网站的请求信息抓下来后,打开分析下按照抓下来的包中的数据进行构建就行了using System;using System.Collections.Generic;using System.Text;using ;using System.IO;namespace bot{public class Html{////// httpwebrequest类中的一些属性的集合///public struct RequestPPT{private string strAccept;////// 获取或设置request类中的Accept属性/// 用以设置接受的文件类型///public string Accept{get{return strAccept;}set{strAccept = value;}}private string strContentType;////// 获取或设置request类中的ContentType属性/// 用以设置请求的媒体类型///public string ContentType{get{return strContentType;}set{strContentType = value;}}////// 获取或设置request类中的UserAgent属性/// 用以设置请求的客户端信息///private string strUserAgent;public string UserAgent{get{return strUserAgent;}set{strUserAgent = value;}}private string strMethod;////// 获取或设置request类中的Method属性/// 可以将Method 属性设置为任何HTTP 1.1 协议谓词：GET、HEAD、POST、PUT、DELETE、TRACE 或OPTIONS。

/// 如果ContentLength 属性被设置为-1 以外的任何值，则必须将Method 属性设置为上载数据的协议属性。

///public string Method{get{return strMethod;}set{strMethod = value;}}}////// 构建一个httt请求以获取目标链接的cookies,需要传入目标的登录地址和相关的post信息,返回完成登录的cookies,以及返回的html内容////// 登录页面的地址/// post信息/// 输出的html代码/// 请求的标头所需要的相关属性设置/// 请求完成后的cookiespublic CookieCollection funGetCookie(string url, byte[] post, out string strHtml, RequestPPT rppt,string server){CookieCollection ckclReturn = new CookieCollection();CookieContainer cc = new CookieContainer();HttpWebRequest hwRequest;HttpWebResponse hwResponse;//请求cookies的格式//hwRequest = (HttpWebRequest)HttpWebRequest.Create(new Uri(url));//hwResponse = (HttpWebResponse)hwRequest.GetResponse();//string cookie = hwResponse.Headers.Get("Set-Cookie");//cookie = cookie.Split(';')[0];//hwRequest = null;//hwResponse = null;//构建即将发送的包头//cc.SetCookies(new Uri(server), cookie);hwRequest = (HttpWebRequest)HttpWebRequest.Create(new Uri(url));hwRequest.CookieContainer = cc;hwRequest.Accept = rppt.Accept;hwRequest.ContentType = rppt.ContentType;erAgent = erAgent;hwRequest.Method = rppt.Method;hwRequest.ContentLength = post.Length;//写入标头Stream stream;stream = hwRequest.GetRequestStream();stream.Write(post, 0, post.Length);stream.Close();//发送请求获取响应内容try{hwResponse = (HttpWebResponse)hwRequest.GetResponse();}catch{strHtml = "";return ckclReturn;}stream = hwResponse.GetResponseStream();StreamReader sReader = new StreamReader(stream, Encoding.Default);strHtml = sReader.ReadToEnd();sReader.Close();stream.Close();//获取缓存内容ckclReturn = hwResponse.Cookies;return ckclReturn;}////// 根据已经获取的有效cookies来获取目标链接的内容////// 目标链接的url/// 已经获取到的有效cookies/// 头属性的相关设置/// 目标连接的纯文本:"txt/html"public string funGetHtmlByCookies(string strUri, CookieCollection ccl, RequestPPT rppt) {CookieContainer cc = new CookieContainer();HttpWebRequest hwRequest;HttpWebResponse hwResponse;//构建即将发送的包头hwRequest = (HttpWebRequest)HttpWebRequest.Create(new Uri(strUri));cc.Add(ccl);hwRequest.CookieContainer = cc;hwRequest.Accept = rppt.Accept;hwRequest.ContentType = rppt.ContentType;erAgent = erAgent;hwRequest.Method = rppt.Method;hwRequest.ContentLength = 0;//发送请求获取响应内容try{hwResponse = (HttpWebResponse)hwRequest.GetResponse();}catch{return "";}Stream stream;stream = hwResponse.GetResponseStream();StreamReader sReader = new StreamReader(stream, Encoding.Default);string strHtml = sReader.ReadToEnd();sReader.Close();stream.Close();//返回值return strHtml;}////// 根据已经获取的有效cookies来获取目标链接的内容////// 目标链接的url///post的byte信息/// 已经获取到的有效cookies/// 头属性的相关设置/// 目标连接的纯文本:"txt/html"public string funGetHtmlByCookies(string strUri,byte[] post, CookieCollection ccl, RequestPPT rppt){CookieContainer cc = new CookieContainer();HttpWebRequest hwRequest;HttpWebResponse hwResponse;//构建即将发送的包头hwRequest = (HttpWebRequest)HttpWebRequest.Create(new Uri(strUri));cc.Add(ccl);hwRequest.CookieContainer = cc;hwRequest.Accept = rppt.Accept;hwRequest.ContentType = rppt.ContentType;erAgent = erAgent;hwRequest.Method = rppt.Method;hwRequest.ContentLength = post.Length;//写入post信息Stream stream;stream = hwRequest.GetRequestStream();stream.Write(post, 0, post.Length);stream.Close();//发送请求获取响应内容try{hwResponse = (HttpWebResponse)hwRequest.GetResponse();}catch{return"" ;}stream = hwResponse.GetResponseStream();StreamReader sReader = new StreamReader(stream, Encoding.Default);string strHtml = sReader.ReadToEnd();sReader.Close();stream.Close();//返回值return strHtml;}}} 第二个using System;using System.IO;using System.Collections.Generic;using System.Text;using ;using System.Data;using System.Xml;using System.Text.RegularExpressions;namespace bot{public class SisHtml :Html{public SisHtml(){}/// <summary>/// 设置主机ip地址/// </summary>public string Host{get {return strHost;}set {strHost = value;}}private string strHost;/// <summary>/// 获取目标登录链接的cookies/// </summary>/// <param name="url">目标的登录链接</param>/// <param name="dir">构造头的泛型键值对</param>/// <param name="strHtml">登录后返回的页面内容</param>/// <returns>登录后的cookies</returns>public CookieCollection funGetCookie(string url, Dictionary<string, string> dir, out string strHtml){CookieCollection cc = new CookieCollection();RequestPPT rppt = new RequestPPT();//构建post内容string strPost = funMakePost(dir);byte[] post = Encoding.Default.GetBytes(strPost);//设置标头属性rppt.Accept = "image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*";rppt.ContentType = "application/x-www-form-urlencoded";rppt.Method = "Post";erAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; InfoPath.1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022)";string server ="http://"+ new Uri(url).Host;return cc = base.funGetCookie(url, post, out strHtml, rppt, server);}/// <summary>/// 根据已经获取到cookies来获取目标链接的内容/// </summary>/// <param name="strUri">目标的url</param>/// <param name="ccl">已经获取好的cookies</param>/// <returns>目标url的纯文本:"txt/html"</returns>public string funGetHtmlByCookies(string strUri,CookieCollection ccl ){RequestPPT rppt = new RequestPPT();//设置头属性rppt.Accept = "txt/html";rppt.ContentType = "application/x-www-form-urlencoded";rppt.Method = "Post";erAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; InfoPath.1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022)";return base.funGetHtmlByCookies(strUri, ccl, rppt);}/// <summary>/// 投票帖子用的方法/// </summary>/// <param name="strHtml">投票帖子的htmlcode</param>/// <param name="ccl">有效的cookies</param>/// <returns>投票完成以后的htmlcode</returns>public string funVote(string strHtml,CookieCollection ccl){//判断是不是选取投票try{strHtml = strHtml.Substring(strHtml.IndexOf("<form"), stIndexOf("</form>") - strHtml.IndexOf("<form") + 7);}catch{return "";}string strCheck = @"name=""pollanswers[]""";//如果代码中包含关键信息说明没有被投票过if(strHtml.IndexOf(strCheck)>0){//获取post头的需求信息string strFormHash = "77b49df4";string strPollanswers;strPollanswers = strHtml.Substring(strHtml.IndexOf(strCheck)+strCheck.Length, 20).Split('"')[1];string strPollansubmit = "提交";Dictionary<string,string>dir = new Dictionary<string,string>();dir.Add("formhash",strFormHash);dir.Add("pollanswers[]",strPollanswers);dir.Add("pollsubmit",strPollansubmit);string strPost = funMakePost(dir);byte[] post = Encoding.Default.GetBytes(strPost);//获取请求的路径string strUrl= "http://"+Host+"/bbs/";string strActionUrl =@"method=""post""";strUrl+=strHtml.Substring(strHtml.IndexOf(strActionUrl)+strActionUrl.Length,100).Split('"')[1].Replace("a mp;","");//构建头RequestPPT rppt = new RequestPPT();rppt.Accept = "txt/html";rppt.ContentType = "application/x-www-form-urlencoded";rppt.Method = "Post";erAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; InfoPath.1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022)";strHtml = base.funGetHtmlByCookies(strUrl, post, ccl, rppt);}return strHtml;}/// <summary>/// 根据泛型来构建字符串用于post/// </summary>/// <param name="dir">带有键值对的泛型</param>/// <returns>构建完毕的字符串</returns>private string funMakePost(Dictionary<string,string> dir){string strPost="";foreach (KeyValuePair<string, string> kvp in dir){strPost += kvp.Key + "=";if (kvp.Value == ""){strPost += "''";}else{strPost += kvp.Value;}strPost += "&";}strPost = strPost.Substring(0, strPost.Length - 1);return strPost;}/// <summary>/// 获取下一个列表页面的路径/// </summary>/// <param name="strHtml">当前页面的htmlcode</param>/// <returns>下一个列表页面的路径</returns>public string funGetNextUrl(string strHtml){string strUrl = "";//判断是否是列表型页面if (strHtml.IndexOf("<form") != -1){return strUrl;}string strKey =@"class=""next""";strUrl = "http://"+Host+"/bbs/"+strHtml.Substring(strHtml.IndexOf(strKey) - 100, 100).Split('"')[1].Replace("amp;", "");return strUrl;}public DataT able funGetListTable(string strHtml){DataTable dt = new DataT able();DataColumn dc = new DataColumn("Url");dt.Columns.Add(dc);DataRow dr ;string strReg = @"viewthread.php(\S)+highlight=";Regex rg = new Regex(strReg);MatchCollection mc = rg.Matches(strHtml);foreach (Match ms in mc){dr = dt.NewRow();dr[0] = "http://" + Host + "/bbs/" + ms.ToString().Replace("amp;", "");dt.Rows.Add(dr);}return dt;}}}本文来自CSDN博客，转载请标明出处：/atlasroben/archive/2008/07/29/2729958.aspx。