简单实用的铁道部12306.cn网站自动化登录

铁道部网站登录难点分析

必须使用微软IE浏览器
- 铁道部网站只支持IE在线付款
网站使用Https协议
- 客户端不允许跨域访问

技术解析

使用微软IE开发者工具栏即可破解自动化登录过程

开始步骤

使用IE8及其以上的版本，IE7及以下版本需要另外下载微软官方的IE开发者工具栏，下载链接如下：
- Internet Explorer Developer Toolbar: http://www.microsoft.com/download/en/details.aspx?id=18359
在IE地址栏中访问铁道部登录页面 https://dynamic.12306.cn/otsweb/loginAction.do?method=init
需要且只需要输入一次自己的用户名，密码，验证码即可

按F12快捷键调出IE开发者工具栏 >>> Script（脚本）选项卡 >>> 复制如下图代码到内容文本框中 >>> 点击 Run Script（运行脚本）按钮

        var page = "https://dynamic.12306.cn/otsweb/loginAction.do?method=init";var url = "https://dynamic.12306.cn/otsweb/loginAction.do?method=login";var queryurl = "https://dynamic.12306.cn/otsweb/order/querySingleAction.do?method=init";function submitForm() {var _ifrMain = document.getElementById('main');var userName = _ifrMain.contentWindow.document.getElementById('UserName');var password = _ifrMain.contentWindow.document.getElementById('password');var randCode = _ifrMain.contentWindow.document.getElementById('randCode');var subLink = _ifrMain.contentWindow.document.getElementById('subLink');var submitUrl = url;$.ajax({type: "POST",url: submitUrl,data: {"loginUser.user_name": userName.value, "user.password": password.value, "randCode": randCode.value},timeout: 30000,success: function (msg) {if (msg.indexOf('请输入正确的验证码') > -1) {alert('请输入正确的验证码！');};if (msg.indexOf('当前访问用户过多') > -1) {reLogin(msg);}else {location.replace(queryurl);};},error: function (msg) {reLogin(msg);},beforeSend: function (XHR) {;}});}var count = 1;function reLogin(msg) {count++;subLink.innerHTML = "(" + count + ")次登录中..." + msg;setTimeout(submitForm, 500);}submitForm();