HttpContext.Cache屬性

標籤：

      HttpContext基於HttpApplication的處理管道，由於HttpContext對象貫穿整個處理過程，所以，可以從HttpApplication處理管道的前端將狀態資料傳遞到管道的後端，完成狀態的傳遞任務做個小demo

1.控制器：

  public class TestController : Controller    {        string key = "data";        public ActionResult Index()        {            return View();        }        /// <summary>        /// 定時器擷取快取資料        /// </summary>        /// <returns></returns>        [HttpPost]        public JsonResult GetData()        {            string data = Convert.ToString(HttpContext.Cache.Get(this.key));           if (!string.IsNullOrEmpty(data))           {               return this.Json(new { success = true, data = data });           }           else           {               return this.Json(new { success = false, time = DateTime.Now.ToString("ss"), data = data });           }        }        /// <summary>        /// 開啟輸入緩衝值介面        /// </summary>        /// <returns></returns>        [HttpGet]        public ActionResult CreateCacheData()        {            return View();        }        /// <summary>        /// 將資料插入緩衝        /// </summary>        /// <param name="value"></param>        /// <returns></returns>        [HttpPost]        public void InsertCache(string value)        {            HttpContext.Cache.Insert(this.key, value);                 }    }

2.視圖

Index.cshtml:

@{    ViewBag.Title = "Index";    Layout = null;}<script src="~/Scripts/jquery-1.8.2.min.js"></script><script src="~/Scripts/jquery.timers-1.2.js"></script><button id="btnStart">開始定時器</button><script>    $(function ()    {        //定時器開始        $("#btnStart").bind("click", function () {            $("body").everyTime("3s", "timer", function () {                $.ajax(                    {                        type: ‘post‘,                        url: ‘/Test/GetData‘,                        success: function (r) {                            if (r.success) {                                console.log("擷取到資料,json字串為" + JSON.stringify(r.data));                            }                            else {                                console.log("(" +r.time + ")秒沒有擷取到資料");                            }                        }                    });            })        });         })</script>

jquery.timers-1.2.js 是定時器jquery外掛程式
定時器外掛程式下載

CreateCacheData.cshtml:

@{    ViewBag.Title = "CreateCacheData";}<script src="~/Scripts/jquery-1.8.2.min.js"></script><input id="txtData"/><button id="btnSave" >    插入伺服器緩衝</button><script>    $(function () {        $("#btnSave").click(function ()        {            var getDataValue = $("#txtData").val();            $.post("/Test/InsertCache", {value:getDataValue}, function () {                alert("緩衝插入成功");            });        })    });</script>

3.效果

，

HttpContext.Cache屬性