模拟登陆的原理很简单,就是发送一个http 请求服务器获得响应,然后客户端获取到cookie即可实现模拟登陆,比如一些抢票软件的原理无非也是这样模拟客户端的cookie 然后发送请求去抢票,然后12306 本文将演示如何用c# 来实现模拟登陆的,推荐一款工具fiddler,这是一款监听http 请求的利器。废话不多说,我就以博客园为例来实现模拟登陆。首先我登陆博客园 http://passport.cnblogs.com/login.aspx 输入用户名和密码点登陆 就会看到fiddler 上的相关信息:
ok,我首先需要发送一个http 请求 ,这个请求时post的方式,然后用户名和密码就是post的数据。代码如下:
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static cookiecontainer getcookie( string poststring, string posturl) { cookiecontainer cookie = new cookiecontainer(); httpwebrequest httprequset = (httpwebrequest)httpwebrequest.create(posturl); //创建http 请求 httprequset.cookiecontainer = cookie; //设置cookie httprequset.method = "post" ; //post 提交 httprequset.keepalive = true ; httprequset.useragent = "mozilla/5.0 (windows nt 6.3; wow64; trident/7.0; rv:11.0) like gecko" ; httprequset.accept = "text/html, application/xhtml+xml, */*" ; httprequset.contenttype = "application/x-www-form-urlencoded" ; //以上信息在监听请求的时候都有的直接复制过来 byte [] bytes = system.text.encoding.utf8.getbytes(poststring); httprequset.contentlength = bytes.length; stream stream = httprequset.getrequeststream(); stream.write(bytes, 0, bytes.length); stream.close(); //以上是post数据的写入 httpwebresponse httpresponse = (httpwebresponse)httprequset.getresponse(); //获得 服务端响应 return cookie; //拿到cookie } |
拿到cookie 之后我们就可以以用户的什么去用户的后台或者其他的地方:
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static string getcontent(cookiecontainer cookie, string url) { string content; httpwebrequest httprequest = (httpwebrequest)httpwebrequest.create(url); httprequest.cookiecontainer = cookie; httprequest.referer = url; httprequest.useragent = "mozilla/5.0 (windows nt 6.3; wow64; trident/7.0; rv:11.0) like gecko" ; httprequest.accept = "text/html, application/xhtml+xml, */*" ; httprequest.contenttype = "application/x-www-form-urlencoded" ; httprequest.method = "get" ; httpwebresponse httpresponse = (httpwebresponse)httprequest.getresponse(); using (stream responsestream = httpresponse.getresponsestream()) { using (streamreader sr = new streamreader(responsestream, system.text.encoding.utf8)) { content = sr.readtoend(); } } return content; } |
ok 下面是调用 我写的是一个控制台程序:
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static void main( string [] args) { string loginstr = "{要post 的登陆数据包括用户名和密码}" ; //从登陆的地址获取cookie cookiecontainer cookie = getcookie(loginstr, "http://passport.cnblogs.com/login.aspx" ); //这个是进入后台地址 console.writeline(getcontent(cookie, "http://i.cnblogs.com/editposts.aspx" )); console.read(); } |
可以看到我已经进入了后台了:
如果我是没有登陆的情况下进入这个地址是这样的:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。