Action过滤器

/// 
/// 执行代码前执行/// 
/// public override void OnActionExecuting(ActionExecutingContext filterContext){　　//1.显示触发过滤器action方法的名称　　string actionName = filterContext.ActionDescriptor.ActionName;   filterContext.HttpContext.Response.Write("ActionName=" + actionName + "
");　　//2.显示触发过滤器action方法所在的控制器　　string ctrlName = filterContext.ActionDescriptor.ControllerDescriptor.ControllerName;　　filterContext.HttpContext.Response.Write("ControllerName=" + ctrlName + "
");　　//3.判断当前action方法是否贴有[HttpGet]特性标签　　bool isTrue = filterContext.ActionDescriptor.IsDefined(typeof(HttpGetAttribute), false);　　filterContext.HttpContext.Response.Write("当前action是否贴有[httpGet]特性" + isTrue + "
");　　//4.获取当前action方法上贴有[HttpGet]特性标签的实例　　object[] httpGets = filterContext.ActionDescriptor.GetCustomAttributes(typeof(HttpGetAttribute), false);　　foreach (object obj in httpGets)　　{　　filterContext.HttpContext.Response.Write("获取当前action方法上贴有[HttpGet]特性标签的实例:" + obj.ToString() + "
");　　}　　//5.记录当前action方法的实际参数　　ParameterDescriptor[] dics = filterContext.ActionDescriptor.GetParameters();　　foreach(ParameterDescriptor dic in dics)　　{　　//打印action参数名称　　filterContext.HttpContext.Response.Write("记录当前action方法的实际参数:" + dic.ParameterName.ToString() + "
");　　}　　base.OnActionExecuting(filterContext);}/// 
/// 执行代码后执行/// 
/// public override void OnActionExecuted(ActionExecutedContext filterContext){　　base.OnActionExecuted(filterContext);}/// 
/// 返回结果前执行/// 
/// public override void OnResultExecuting(ResultExecutingContext filterContext){    base.OnResultExecuting(filterContext);}/// 
/// 返回结果后执行/// 
/// public override void OnResultExecuted(ResultExecutedContext filterContext){    base.OnResultExecuted(filterContext);}

 

 

异常过滤器：HandleErrorAttribute

public override void OnException(ExceptionContext filterContext){    //1.获取异常对象    Exception ex= filterContext.Exception;    //2.将异常写入日志    //2.1写入记录日志的具体实现过程略...    //3.告诉mvc框架，过滤器已处理异常，不需要额外处理    filterContext.ExceptionHandled = true;    base.OnException(filterContext);}

 

 

配置错误页：

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