ASP.NET MVC页面执行时间-优快云博客

本文链接：https://blog.youkuaiyun.com/keepitshortandsimple/article/details/7357954

本文介绍如何在项目中添加性能过滤器，通过在Action执行前后记录时间，优化控制器响应速度，并在视图结果中展示性能指标，实现对应用性能的有效监控。

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1）在我们的项目中添加一个类文件，

    public class PerformanceActionAttributeFilter : ActionFilterAttribute
    {
        public string Message { get; set; }

        public override void OnActionExecuted(ActionExecutedContext filterContext)
        {
            //在Action执行之后执行 输出到输出流中文字：After Action execute xxx
            //filterContext.HttpContext.Response.Write(@"<br />After Action execute" + "\t " + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fffff"));

            GetTimer(filterContext, "action").Stop();

            base.OnActionExecuted(filterContext);
        }

        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            //在Action执行前执行
            //filterContext.HttpContext.Response.Write(@"<br />Before Action execute" + "\t " + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fffff"));

            GetTimer(filterContext, "action").Start();

            base.OnActionExecuting(filterContext);
        }

        public override void OnResultExecuted(ResultExecutedContext filterContext)
        {
            //在Result执行之后
            //filterContext.HttpContext.Response.Write(@"<br />After ViewResult execute" + "\t " + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fffff"));

            var renderTimer = GetTimer(filterContext, "render");
            renderTimer.Stop();

            var actionTimer = GetTimer(filterContext, "action");
            var response = filterContext.HttpContext.Response;

            if (response.ContentType == "text/html")
            {
                response.Write(
                    String.Format(
                        "<p>Action '{0} :: {1}', Execute: {2}ms, Render: {3}ms.</p>",
                        filterContext.RouteData.Values["controller"],
                        filterContext.RouteData.Values["action"],
                        actionTimer.ElapsedMilliseconds,
                        renderTimer.ElapsedMilliseconds
                    )
                );
            }

            base.OnResultExecuted(filterContext);
        }

        public override void OnResultExecuting(ResultExecutingContext filterContext)
        {
            GetTimer(filterContext, "render").Start();

            base.OnResultExecuting(filterContext);
        }

        private Stopwatch GetTimer(ControllerContext context, string name)
        {
            string key = "__timer__" + name;
            if (context.HttpContext.Items.Contains(key))
            {
                return (Stopwatch)context.HttpContext.Items[key];
            }

            var result = new Stopwatch();
            context.HttpContext.Items[key] = result;
            return result;
        }

    }

2）在Controller中添加描述

    [PerformanceActionAttributeFilter(Message ="controller")]
    public class HomeController : Controller
    {
        [PerformanceActionAttributeFilter(Message = "action")]
        public ActionResult Index()
        {   
            return View();
        }

        public ActionResult About()
        {
            return View();
        }
    }