ASP.Net Web API 全局异常捕获

GlobalWebApiExceptionFilter.cs

    public class GlobalWebApiExceptionFilter : ExceptionFilterAttribute
    {
        public override void OnException(HttpActionExecutedContext context)
        {
            base.OnException(context);
            if (context.Exception is NotImplementedException)
            {
                context.Response = new System.Net.Http.HttpResponseMessage(System.Net.HttpStatusCode.OK);
                context.Response.Content = new System.Net.Http.StringContent("not implement");
            }
        }
    }

添加全局过滤器:

    public static class WebApiConfig
    {
        public static void Register(HttpConfiguration config)
        {
            config.MapHttpAttributeRoutes();

            config.Routes.MapHttpRoute(
                name: "DefaultApi",
                routeTemplate: "api/{controller}/{action}/{id}",
                defaults: new { id = RouteParameter.Optional }
            );
            config.Filters.Add(new GlobalWebApiExceptionFilter());
        }
    }

注：只能用于asp.net web api2 以上的版本