/// <summary>
        /// 获取信息 加入缓存
        /// </summary>
        public void GetMajors()
        {
            //写入专业缓存
            CookiesHelper.SetCookie("Majors", HttpUtility.UrlEncode(JsonConvert.SerializeObject(student_BLL.GetMajors())), DateTime.Now.AddDays(7));
            //写入班级缓存
            CookiesHelper.SetCookie("Classes", HttpUtility.UrlEncode(JsonConvert.SerializeObject(student_BLL.QueryBySid())), DateTime.Now.AddDays(7));
            //写入阶段缓存
            CookiesHelper.SetCookie("Stages", HttpUtility.UrlEncode(JsonConvert.SerializeObject(student_BLL.GetStages())), DateTime.Now.AddDays(7));
            //写入学院缓存
            CookiesHelper.SetCookie("Colleges", HttpUtility.UrlEncode(JsonConvert.SerializeObject(user_BLL.GetColleges())), DateTime.Now.AddDays(7));
            //记录数量
            var majorNum = 0;

            majorNum = student_BLL.GetMajors().Count;
            var classNum = 0;

            classNum = student_BLL.QueryBySid().Count;
            var stageNum = 0;

            stageNum = student_BLL.GetStages().Count;
            var collegesNum = 0;

            collegesNum         = user_BLL.GetColleges().Count;
            ViewBag.majorNum    = majorNum;
            ViewBag.classNum    = classNum;
            ViewBag.stageNum    = stageNum;
            ViewBag.collegesNum = collegesNum;
        }
        public string QueryBySid(int Id)
        {
            var result = student_BLL.QueryBySid().Where(m => m.StageId.Equals(Id)).ToList();

            return(JsonConvert.SerializeObject(result));
        }