運用C#發送Http懇求完成模仿登陸實例。本站提示廣大學習愛好者:(運用C#發送Http懇求完成模仿登陸實例)文章只能為提供參考,不一定能成為您想要的結果。以下是運用C#發送Http懇求完成模仿登陸實例正文
模仿登陸的原理很復雜,就是發送一個Http 懇求服務器取得呼應,然後客戶端獲取到cookie即可完成模仿登陸,比方一些搶票軟件的原理無非也是這樣模仿客戶端的cookie 然後發送懇求去搶票,然後12306 本文將演示如何用C# 來完成模仿登陸的,引薦一款工具Fiddler,這是一款監聽http 懇求的利器。廢話不多說,我就以博客園為例來完成模仿登陸。首先我登陸博客園 http://passport.cnblogs.com/login.aspx 輸出用戶名和密碼點登陸 就會看到Fiddler 上的相關信息:
Ok,我首先需求發送一個http 懇求 ,這個懇求時POST的方式,然後用戶名和密碼就是POST的數據。代碼如下:
static CookieContainer GetCookie(string postString, string postUrl) { CookieContainer cookie = new CookieContainer(); HttpWebRequest httpRequset = (HttpWebRequest)HttpWebRequest.Create(postUrl);//創立http 懇求 httpRequset.CookieContainer = cookie;//設置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";//以上信息在監聽懇求的時分都有的直接復制過去 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數據的寫入 HttpWebResponse httpResponse = (HttpWebResponse)httpRequset.GetResponse();//取得 服務端呼應 return cookie;//拿到cookie }
拿到cookie 之後我們就可以以用戶的什麼去用戶的後台或許其他的中央:
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 上面是調用 我寫的是一個控制台順序:
static void Main(string[] args) { string loginstr = "{要post 的登陸數據包括用戶名和密碼}"; //從登陸的地址獲取cookie CookieContainer cookie = GetCookie(loginstr, "http://passport.cnblogs.com/login.aspx"); //這個是進入後台地址 Console.WriteLine(GetContent(cookie, "http://i.cnblogs.com/EditPosts.aspx")); Console.Read(); }
可以看到我曾經進入了後台了:
假如我是沒有登陸的狀況下進入這個地址是這樣的:
以上就是本文的全部內容,希望對大家的學習有所協助,也希望大家多多支持。