oa_mvc_easyui_登录完成(2)

1.使用MVC特有的ajax方式：异步表单提交方式

js文件引用：<script src="~/Scripts/jquery.unobtrusive-ajax.min.js"></script>

代码：

 @using(Ajax.BeginForm("UserLogin",new{},new AjaxOptions(){OnSuccess="afterLogin"},new{id="loginForm"})){
  ......
  //相关的表单
 }

使用Ajax.BeginForm方法会生成一个form表单，最后以Ajax的方式提交表单数据；需要用using把该方法括起来，使系统知道form表单从何处开始，何处结束。

new AjaxOptions(){...} -- ajax的一些参数

new {id="loginForm"} -- htmlAttributes,html属性，生成form表单时，会把键值对添加到form表单的属性中

new{} -- routeValues...

"CheckLogin" -- 指定请求地址的Action名称

参考：http://www.cnblogs.com/zzgblog/p/5454019.html?_t=t

http://www.cnblogs.com/haof3344/p/4659040.html

2. 控制器LoginController中编写登录的方法：UserLogin()，用于异步ajax刷新

LoginController:UserLogin

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.Mvc;

using Itcast.CMS.Model;

using Itcast.CMS.BLL;

namespace Itcast.CMS.WebApp.Controllers

{

    public class LoginController : Controller

    {

        //约定大于配置

        // GET: /Login/

        public ActionResult Index()

        {

            return View();

        }

        public ActionResult UserLogin()

        {

            //判断Session中的验证码是否为空

            string validateconde = Session["validateCode"].ToString() == null ? string.Empty : Session["validateCode"].ToString();

            if(string.IsNullOrEmpty(validateconde))

            {

                return Content("no:验证码错误!");

            }

            Session["validateCode"] = null;

            //判断验证码是否正确

            string vcode = Request["vCode"].ToString();

            if(!vcode.Equals(validateconde,StringComparison.InvariantCultureIgnoreCase))

            {

                //StringComparison.InvariantCultureIgnoreCase 使用区域敏感排序规则、固定区域来比较字符串，同时忽略被比较字符串的大小写

                return Content("no:验证码错误!");

            }

            //判断用户名和密码

            string username = Request["LoginCode"];

            string userpwd = Request["LoginPwd"];

            UserInfoService UserInfoService = new UserInfoService();

            T_UserInfo UserInfo = UserInfoService.GetUserInfoMode(username,userpwd);

            if (UserInfo != null)

            {

                Session["UserInfo"] = UserInfo;//UserInfo对象赋值给Session，

                //调用((T_UserInfo)Session["UserInfo"]).UserName;

                return Content("ok:登录成功!!");

            }

            else

            {

                return Content("no:用户名密码错误");

            }

        }

        /// <summary>

        /// 生产验证码

        /// </summary>

        /// <returns></returns>

        public ActionResult ValidateCode()

        {

            Common.ValidateCode validateCode = new Common.ValidateCode();

            string code = validateCode.CreateValidateCode();//生成验证码

            Session["validateCode"] = code;//存储于Session中

            byte[] buffer = validateCode.CreateValidateGraphic(code);//创建验证码的图片

            return File(buffer, "image/jpeg");

        }

    }

}

3.UserInfoDal层中编写具体方法GetUserInfoMode，LoadEntity用户赋值给T_UserInfo类

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using Itcast.CMS.Model;

using System.Data.SqlClient;

using System.Data;

namespace Itcast.CMS.DAL

{

    public class UserInfoDal

    {

        public T_UserInfo GetUserInfoMode(string username, string userpwd)

        {

            string sql = " select * from T_UserInfo where UserName=@UserName and UserPwd=@UserPwd ";

            SqlParameter[] pars = {

                                       new SqlParameter("@UserName",SqlDbType.NVarChar,),

                                       new SqlParameter("@UserPwd",SqlDbType.NVarChar,)

                                       //SqlDbType.NVarChar 数据库中的类型

                                   };

            pars[].Value = username;

            pars[].Value = userpwd;

            DataTable dt = DAL.SqlHelper.SelectSqlReturnDataTable(sql, CommandType.Text, pars);

            T_UserInfo userinfo = null;

            if (dt.Rows.Count > )

            {

                userinfo = new T_UserInfo();

                LoadEntity(dt.Rows[], userinfo);

            }

            return userinfo;

        }

        public void LoadEntity(DataRow row, T_UserInfo userInfo)

        {

            userInfo.Id = Convert.ToInt32(row["id"].ToString());

            //DBNull.Value 判断是否为null值

            userInfo.UserName = row["UserName"] != DBNull.Value ? row["UserName"].ToString() : string.Empty;

            userInfo.UserPwd = row["UserPwd"] != DBNull.Value ? row["UserPwd"].ToString() : string.Empty;

            userInfo.UserMail = row["UserMail"] != DBNull.Value ? row["UserMail"].ToString() : string.Empty;

            userInfo.RegTime = Convert.ToDateTime(row["RegTime"]);

        }

    }

}

4.业务层：UserInfoService

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using Itcast.CMS.Model;

namespace Itcast.CMS.BLL

{

    public class UserInfoService

    {

        DAL.UserInfoDal UserInfoDal = new DAL.UserInfoDal();

        public T_UserInfo GetUserInfoMode(string username, string userpwd)

        {

            return UserInfoDal.GetUserInfoMode(username, userpwd);

        }

    }

}

5.afterLogin回调函数，对后台返回的数据做处理

 function afterLogin(data) {

            var serverData = data.split(':');

            if (serverData[0] == "ok") {

                window.location.href = "/Home/Index"

            } else if (serverData[0] == "no") {

                $("#errorMsg").text(serverData[1]);

                changeCheckCode();

            } else {

                window.location.href = "/Error.html"

            }

        }

巴特西

oa_mvc_easyui_登录完成(2)

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