是否可以在特定操作方法中忽略MVC中的单个过滤器属性

Question

我已注册以下过滤器

public static void RegisterGlobalFilters(GlobalFilterCollection filters)
        {
            filters.Add(new HandleErrorAttribute());
            filters.Add(new CompressContentAttribute());
            filters.Add(new MinifyHtmlAttribute());

            filters.Add(new MinifyXmlAttribute());
        }

我想忽略特定操作的CompressContentAttribute() 是否有可能在MVC中这样做。 我做了各种研究，每个研究都展示了如何忽略整个过滤器属性

Answer 1

您需要创建自定义过滤器提供程序。此IFilterProvider接口具有GetFilters方法。

public class SelectiveFilterProvider : IFilterProvider
{
    private readonly List<Func<ControllerContext, object>> filterconditions = new List<Func<ControllerContext, object>>();
    public void Add(Func<ControllerContext, object> mycondition)
    {
        filterconditions.Add(mycondition);
    }

    public IEnumerable<Filter> GetFilters(ControllerContext controllerContext, ActionDescriptor actionDescriptor)
    {
        return from filtercondition in filterconditions
               select filtercondition(controllerContext) into ctrlContext
               where ctrlContext!= null
               select new Filter(ctrlContext, FilterScope.Global);
    }
}

在Global.asax.cs

中

 public static void RegisterGlobalFilters(GlobalFilterCollection filters)
    {
        MyFilterProvider provider = new MyFilterProvider();
        provider.Add(d => d.RouteData.Values["action"].ToString() != "SkipFilterAction1 " ? new CompressContentAttribute() : null);
        FilterProviders.Providers.Add(provider);

        filters.Add(new HandleErrorAttribute());
        filters.Add(new MinifyHtmlAttribute());
        filters.Add(new MinifyXmlAttribute());
    }