.net core mvc 自定义 Attribute

 // 自定义attribute 方式
    public class CustomIOCFilterFactoryAttribute : Attribute, IFilterFactory
    {
        public bool IsReusable => true;

        private readonly Type _type;
        public CustomIOCFilterFactoryAttribute(Type type)
        {
            _type = type;
        }

        public IFilterMetadata CreateInstance(IServiceProvider serviceProvider)
        {
            return (IFilterMetadata)serviceProvider.GetService(_type);
        }
    }

使用方法 

  [CustomIOCFilterFactoryAttribute(typeof(CustomExceptionFiter))]
        public IActionResult Index()
        {
            逻辑部分
        }