一、过滤器的优级依次介绍如下(逐次递减)：
Authorization Filter -> Resource Filter -> Acton Filter -> Exception Filter -> Result Filter
1、Authorization Filter （权限过滤器）
???/// <summary> ???/// 权限过滤器 ???/// </summary> ???public class GlobalAuthorizationFilter : Attribute, IAuthorizationFilter ???{ ???????/// <summary> ???????/// 优化权最高的过滤器 ???????/// </summary> ???????/// <param name="context"></param> ???????public void OnAuthorization(AuthorizationFilterContext context) ???????{ ???????????//context.Result = new ObjectResult("IAuthorizationFilter 过滤输出"); ???????????Console.WriteLine("IAuthorizationFilter 过滤输出"); ???????} ???}2、Resource Filter （资源过滤器）
???/// <summary> ???/// 资源过滤器 ???/// </summary> ???public class GlobalResourceFilter : IResourceFilter ???{ ???????/// <summary> ???????/// 获取资源后拦截 ???????/// </summary> ???????/// <param name="context"></param> ???????public void OnResourceExecuted(ResourceExecutedContext context) ???????{ ???????????Console.WriteLine("IResourceFilter OnResourceExecuted 输出"); ???????} ???????/// <summary> ???????/// 获取资源前拦截 ???????/// </summary> ???????/// <param name="context"></param> ???????public void OnResourceExecuting(ResourceExecutingContext context) ???????{ ???????????Console.WriteLine("IResourceFilter OnResourceExecuting 输出"); ???????} ???}3、Acton Filter
???/// <summary> ???/// Acion过滤器 ???/// </summary> ???public class GlobalActonFilter : Attribute, IActionFilter ???{ ???????/// <summary> ???????/// Acion 执行后拦截 ???????/// </summary> ???????/// <param name="context"></param> ???????public void OnActionExecuted(ActionExecutedContext context) ???????{ ???????????Console.WriteLine("IActionFilter OnActionExecuted Acion 执行后拦截"); ???????} ???????/// <summary> ???????/// Acion 执行前拦截 ???????/// </summary> ???????/// <param name="context"></param> ???????public void OnActionExecuting(ActionExecutingContext context) ???????{ ???????????Console.WriteLine("IActionFilter OnActionExecuting Acion 执行前拦截"); ???????} ???}4、Exception Filter
???/// <summary> ???/// 异常全局过滤器 ???/// </summary> ???public class GlobalExceptionFilter : IExceptionFilter ???{ ???????/// <summary> ???????/// 异常处理 ???????/// </summary> ???????/// <param name="context">异常上下文</param> ???????public void OnException(ExceptionContext context) ???????{ ???????????Console.WriteLine(context.Exception); ???????????//如果这里设为false，就表示告诉MVC框架，我没有处理这个错误。然后让它跳转到自己定义的错误页（设为true的话，就表示告诉MVC框架，异常我已经处理了。不需要在跳转到错误页了，也部会抛出黄页了） ???????????context.ExceptionHandled = false; ???????} ???}5、Result Filter
???/// <summary> ???/// 结果过滤器 ???/// </summary> ???public class GlobalResultFilter : IResultFilter ???{ ???????/// <summary> ???????/// 动作结果执行后 ???????/// </summary> ???????/// <param name="context"></param> ???????public void OnResultExecuted(ResultExecutedContext context) ???????{ ???????????Console.WriteLine("IResultFilter OnResultExecuted Acion 动作结果执行后"); ???????} ???????/// <summary> ???????/// 动作结果执行前 ???????/// </summary> ???????/// <param name="context"></param> ???????public void OnResultExecuting(ResultExecutingContext context) ???????{ ???????????Console.WriteLine("IResultFilter OnResultExecuting Acion 动作结果执行前"); ???????} ???}.net core MVC Filters 过滤器的使用
原文地址：https://www.cnblogs.com/intotf/p/10189665.html