模擬藝龍旅游網登錄，供大家參考，具體內容如下
想模擬登錄，首先整理一下流程
1.通過360瀏覽器(ie,火狐等等)f12開發人員工具抓到相關數據
2.獲取驗證碼（拿到cookie），登錄時也需要使用
3.登錄
f12調出開發人員工具，輸入用戶名，密碼登錄，看我們抓到了什么信息。
request url:這個就是登錄請求的url
https://secure.elong.com/passport/ajax/elonglogin
方式post
form data:這個是我們要post傳輸的數據：
username=xzdylyh&passwd=12313&validatecode=驗證碼&rememberme=false
其它一些重要信息在request headers中
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我使用c# 設計的winform界面
復制代碼
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using system;using system.collections.generic;using system.linq;using system.text;using system.threading.tasks;using system.web;using system.net;using system.io;using system.data;namespace httphelper{ public class elogn_login { public static cookiecontainer container = null; //存儲驗證碼cookie #region 登錄 public string requestm(string uname,string passwd,string vaildate) { httpwebrequest request = null; httpwebresponse response = null; try { request = (httpwebrequest)httpwebrequest.create("https://secure.elong.com/passport/ajax/elonglogin"); request.method = "post"; request.contenttype = "application/x-www-form-urlencoded; charset=utf-8"; request.useragent = "mozilla/5.0 (windows nt 10.0; wow64) applewebkit/537.36 (khtml, like gecko) chrome/45.0.2454.101 safari/537.36"; request.allowautoredirect = true; request.cookiecontainer = container;//獲取驗證碼時候獲取到的cookie會附加在這個容器里面 request.keepalive = true;//建立持久性連接 //整數據 string postdata = string.format("username={0}&passwd={1}&validatecode={2}&rememberme=true", uname, passwd, vaildate); asciiencoding encoding = new asciiencoding(); byte[] bytepostdata = encoding.getbytes(postdata); request.contentlength = bytepostdata.length; //發送數據 using結束代碼段釋放 using (stream requeststm = request.getrequeststream()) { requeststm.write(bytepostdata, 0, bytepostdata.length); } //響應 response = (httpwebresponse)request.getresponse(); string text = string.empty; using (stream responsestm = response.getresponsestream()) { streamreader redstm = new streamreader(responsestm, encoding.utf8); text = redstm.readtoend(); } return text; } catch (exception ex) { var msg = ex.message; return msg; } } #endregion #region 獲取驗證碼 public stream getcodestream(string codeurl) { //驗證碼請求 httpwebrequest request = (httpwebrequest)webrequest.create(codeurl); request.method = "get"; request.contenttype = "application/x-www-form-urlencoded"; request.useragent = "mozilla/5.0 (windows nt 6.1; wow64; rv:5.0.1) gecko/20100101 firefox/5.0.1"; request.accept = "image/webp,*/*;q=0.8"; request.cookiecontainer = new cookiecontainer();//!very important.!!! container = request.cookiecontainer; var c = request.cookiecontainer.getcookies(request.requesturi); httpwebresponse response = (httpwebresponse)request.getresponse(); response.cookies = container.getcookies(request.requesturi); stream stream = response.getresponsestream(); return stream; } } #endregion} |
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using system;using system.collections.generic;using system.componentmodel;using system.data;using system.drawing;using system.linq;using system.text;using system.threading.tasks;using system.windows.forms;using system.io;using httphelper;namespace windowsformsapplication8{ public partial class elong_login_form : form { public elong_login_form() { initializecomponent(); } private void button1_click(object sender, eventargs e) { elogn_login elonglogin = new elogn_login(); var rmsg = elonglogin.requestm(txtusername.text,txtpassword.text,txtvaildata.text); messagebox.show(rmsg); } private void elong_login_form_load(object sender, eventargs e) { reflshpicimage();//更新驗證碼 } //更新驗證碼 public void reflshpicimage() { string codeurl = "https://secure.elong.com/passport/getvalidatecode"; elogn_login agent = new elogn_login(); stream stmimage = agent.getcodestream(codeurl); picvalidate.image = image.fromstream(stmimage); } private void btnrevalidate_click(object sender, eventargs e) { reflshpicimage();//更新驗證碼 } private void picvalidate_click(object sender, eventargs e) { reflshpicimage();//更新驗證碼 } }} |
最后執行效果，登錄的session已經成功返回。
