[Asp.Net Core]NET5_ActionFilter的多种扩展

Posted 2022-01-02 厦门德仔

1.通过实现IActionFilter接口来完成扩展

    public class CustomActionFilterAttribute : Attribute, IActionFilter
    
        /// <summary>
        /// 方法被构造
        /// </summary>
        /// <param name="context"></param>
        public void OnActionExecuting(ActionExecutingContext context)
        
            Console.WriteLine("方法执行前");
        
        public void OnActionExecuted(ActionExecutedContext context)
        
            Console.WriteLine("方法执行后");
        

    

2.通过继承ActionFilterAttribute（系统提供的实现），根据自己的需要，覆写不同的方法，达到自己的诉求

    public class CustomActionFilterChildAttribute:ActionFilterAttribute 
    
        public override void OnActionExecuting(ActionExecutingContext context)
        
            base.OnActionExecuting(context);
        
        public override void OnActionExecuted(ActionExecutedContext context)
        
            base.OnActionExecuted(context);
        

    

3.异步版本的实现，通过实现IAsyncActionFilter接口来实现

public class CustomActionFilterAsyncAttribute : Attribute, IAsyncActionFilter
    
        public Task OnActionExecutionAsync(ActionExecutingContext context, ActionExecutionDelegate next)
        

            return Task.Run(()=>  
            
            );