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;
        }