MVC 极验 的使用

准备工作

gt.js文件    jquery-1.7.1min.js或更高版本

1、 js验证及 获取验证码

  <script type="text/javascript">        window.addEventListener('load', processGeeTest);        function processGeeTest() {            $.ajax({                // 获取id，challenge，success（是否启用failback）                url: "/Login/GeekTest",                type: "get",                dataType: "json", // 使用jsonp格式                success: function (data) {                    // 使用initGeetest接口                    // 参数1：配置参数，与创建Geetest实例时接受的参数一致                    // 参数2：回调，回调的第一个参数验证码对象，之后可以使用它做appendTo之类的事件                    initGeetest({                        gt: data.gt,                        challenge: data.challenge,                        product: "float", // 产品形式                        offline: !data.success                    },                        handler);                }            });        }
 UsersBll bllUser = new UsersBll();        UserRegionBll bllUserRegion = new UserRegionBll();        public ActionResult Index()        {            return View();        }        [HttpPost]        //登录 根据登录的用户名和密码查询是否有该角色 并且验证码必须正确   跳到主页         public ActionResult Index(LoginEntity entity)        {            if (ModelState.IsValid)            {                usersEntity u = bllUser.GetUserByAccountAndPassword(entity);                if (u == null)                {                    return Content("<script>alert('用户名或密码不正确');window.location.href='/Login/Index'</script>");                }                if (u != null)                {                    if (!CheckGeeTestResult())                    {                        return Content("<script>alert('请点击按钮进行验证');window.location.href='/Login/Index'</script>");                    }                    CurrentUserEntity currentUser = new CurrentUserEntity();                    currentUser.id = u.id;                    currentUser.account = u.account;                    currentUser.createdate = u.createdate;                    currentUser.parentid = u.parentid;                    currentUser.password = u.password;                    currentUser.role = u.role;                    currentUser.truename = u.truename;                    List<user_regionEntity> listUserRegion = bllUserRegion.GetUserRegionByUserId(u.id);                    currentUser.userregion = listUserRegion;                    Session["CurrentUser"] = currentUser;                    return RedirectToAction("Index", "Home");                }            }            return View();        }        public ActionResult GeekTest()        {            return Content(GetCaptcha(), "application/json");        }        private string GetCaptcha()        {            GeetestLib geetest = new GeetestLib("898684e62c5424dde6f3d0010597bdec", "5435b2681a932a3c9af9296bf170e5bd");            String userID = "test";            Byte gtServerStatus = geetest.preProcess(userID, "web", "127.0.0.1");            Session[GeetestLib.gtServerStatusSessionKey] = gtServerStatus;            Session["userID"] = userID;            return geetest.getResponseStr();        }        public bool CheckGeeTestResult()        {            var geetest = new GeetestLib("898684e62c5424dde6f3d0010597bdec", "5435b2681a932a3c9af9296bf170e5bd");            var gtServerStatusCode = (byte)Session[GeetestLib.gtServerStatusSessionKey];            var userId = (string)Session["userID"];            var challenge = Request.Form.Get(GeetestLib.fnGeetestChallenge);            var validate = Request.Form.Get(GeetestLib.fnGeetestValidate);            var seccode = Request.Form.Get(GeetestLib.fnGeetestSeccode);            var result = gtServerStatusCode == 1 ? geetest.enhencedValidateRequest(challenge, validate, seccode, userId) : geetest.failbackValidateRequest(challenge, validate, seccode);            return result == 1;        }

var handler = function (captchaObj) { // 将验证码加到id为captcha的元素里 captchaObj.appendTo("#code"); captchaObj.onSuccess = function (e) { console.log(e); } }; document.onkeydown=function(event){ var e = event || window.event || arguments.callee.caller.arguments[0]; if(e && e.keyCode==13){ // enter 键 YanZhen() } }; function YanZhen() { var name = $("#username").val(); var pwd = $("#userpwd").val(); if (name=="Your name") { alert("请输入您的用户名！"); $("#username").focus(); return""; } if (pwd=="******") { alert("请输入您的密码！"); $("#userpwd").focus(); return ""; } $("#body form").submit(); } </script>
2、在form表单内 写验证码的div
<h2>验证码：</h2>                    <div id="code"></div>
3、后台接受和验证
 UsersBll bllUser = new UsersBll();        UserRegionBll bllUserRegion = new UserRegionBll();        public ActionResult Index()        {            return View();        }        [HttpPost]        //登录 根据登录的用户名和密码查询是否有该角色 并且验证码必须正确   跳到主页         public ActionResult Index(LoginEntity entity)        {            if (ModelState.IsValid)            {                usersEntity u = bllUser.GetUserByAccountAndPassword(entity);                if (u == null)                {                    return Content("<script>alert('用户名或密码不正确');window.location.href='/Login/Index'</script>");                }                if (u != null)                {                    if (!CheckGeeTestResult())                    {                        return Content("<script>alert('请点击按钮进行验证');window.location.href='/Login/Index'</script>");                    }                    CurrentUserEntity currentUser = new CurrentUserEntity();                    currentUser.id = u.id;                    currentUser.account = u.account;                    currentUser.createdate = u.createdate;                    currentUser.parentid = u.parentid;                    currentUser.password = u.password;                    currentUser.role = u.role;                    currentUser.truename = u.truename;                    List<user_regionEntity> listUserRegion = bllUserRegion.GetUserRegionByUserId(u.id);                    currentUser.userregion = listUserRegion;                    Session["CurrentUser"] = currentUser;                    return RedirectToAction("Index", "Home");                }            }            return View();        }        public ActionResult GeekTest()        {            return Content(GetCaptcha(), "application/json");        }        private string GetCaptcha()        {            GeetestLib geetest = new GeetestLib("自己的公开key", "自己的私有key");            String userID = "test";            Byte gtServerStatus = geetest.preProcess(userID, "web", "127.0.0.1");            Session[GeetestLib.gtServerStatusSessionKey] = gtServerStatus;            Session["userID"] = userID;            return geetest.getResponseStr();        }        public bool CheckGeeTestResult()        {            var geetest = new GeetestLib("自己的公开key", "自己的私有key");            var gtServerStatusCode = (byte)Session[GeetestLib.gtServerStatusSessionKey];            var userId = (string)Session["userID"];            var challenge = Request.Form.Get(GeetestLib.fnGeetestChallenge);            var validate = Request.Form.Get(GeetestLib.fnGeetestValidate);            var seccode = Request.Form.Get(GeetestLib.fnGeetestSeccode);            var result = gtServerStatusCode == 1 ? geetest.enhencedValidateRequest(challenge, validate, seccode, userId) : geetest.failbackValidateRequest(challenge, validate, seccode);            return result == 1;        }