net 记录controller Action耗时

可能有些时候需要记录Action的执行时间来优化系统功能，这时可以用过滤器来实现

第1个例子

using System;
using System.Diagnostics;
using System.Net.Http;
using System.Threading;
using System.Threading.Tasks;
using System.Web.Http.Controllers;
using System.Web.Mvc;

namespace Mall.Site
{

/// <summary>
/// 执行耗时监测
/// </summary>
public class StopwatchFilter : ActionFilterAttribute
{
Stopwatch wat = new Stopwatch();
Stopwatch swAsync = new Stopwatch();

public override void OnActionExecuted(ActionExecutedContext filterContext)
{
swAsync.Stop();
if (swAsync.ElapsedMilliseconds>0)
{
string msg = string.Format("页面{0},线程id={1},Action执行时间{2}毫秒", filterContext.HttpContext.Request.RawUrl, Thread.CurrentThread.ManagedThreadId, swAsync.ElapsedMilliseconds);
FrameWork.log4net.LogHelper.LogInfo(msg);
} 
}
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
swAsync.Reset();
swAsync.Start();
}


public override void OnResultExecuted(ResultExecutedContext filterContext)
{
wat.Stop();
if (wat.ElapsedMilliseconds>0)
{ 
string msg = string.Format("页面{0},线程id={1},View执行时间{2}毫秒", filterContext.HttpContext.Request.RawUrl, Thread.CurrentThread.ManagedThreadId, wat.ElapsedMilliseconds);
FrameWork.log4net.LogHelper.LogInfo(msg);
} 
}
public override void OnResultExecuting(ResultExecutingContext filterContext)
{
wat.Reset();
wat.Start();
} 
}
}

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