在ASP.Net MVC 4和Autofac注册全局过滤器(Register global filt

我有这样一个过滤器：

public class CustomFilterAttribute : ActionFilterAttribute, IAuthorizationFilter
{
    public MyPropery Property { get; set; }
    ....
}

我需要它在我的项目中的每个动作来运行

我试图在GlobalFilters登记，但我的财产不会被注入

我想这个解决方案来注册我的过滤器，但它不会被调用

如何做到这一点的任何想法？

Answer 1:

There's a new way of registering MVC global filters in AutoFac. First, remove the filter registration from your RegisterGlobalFilters because we will have Autofac handle adding them to our controllers/actions instead of MVC.

Then, register your container as follows:

var builder = new ContainerBuilder();
builder.RegisterControllers(Assembly.GetExecutingAssembly());

builder.RegisterType<MyProperty>().As<IProperty>();

builder.Register(c => new CustomFilterAttribute(c.Resolve<IProperty>()))
                .AsActionFilterFor<Controller>().InstancePerHttpRequest();

builder.RegisterFilterProvider();

IContainer container = builder.Build();

DependencyResolver.SetResolver(new AutofacDependencyResolver(container));

Note that by passing in the Controller class into the extension AsActionFilterFor() we are telling AutoFac to apply this filter to all classes that derive from the Controller class (which, in MVC, is all controllers). Since we are calling AsActionFilterFor() without any arguments, we are also specifying we want to have the filter applied to all actions within the specified controllers. If you want to apply your filter to a select controller and action, you can use lambda expressions like so:

builder.Register(c => new CustomFilterAttribute(c.Resolve<IProperty>()))
    .AsActionFilterFor<HomeController>(c => c.Index())
    .InstancePerHttpRequest();

If your action takes a parameter, use the default keyword to specify:

builder.Register(c => new CustomFilterAttribute(c.Resolve<IProperty>()))
    .AsActionFilterFor<HomeController>(c => c.Detail(default(int)))
    .InstancePerRequest();

Note that you have to use a different extension method based on what type of filter you are registering, here are the supported filter types:

AsActionFilterFor
AsAuthorizationFilterFor
AsExceptionFilterFor
AsResultFilterFor

Answer 2:

您现在应该使用皮特的解决方案，现在做到这一点。感谢他为一个更新的解决方案。

我终于成功了，这里是如何做到这一点：

首先与所有依赖构造函数创建属性

public class CustomFilterAttribute : ActionFilterAttribute, IAuthorizationFilter
{
    private IProperty _property;

    public CustomFilterAttribute(IProperty repository)
    {
        _property = property;
    }
    ....
 }

注册你的一切在autofac需要

var builder = new ContainerBuilder();
builder.RegisterControllers(Assembly.GetExecutingAssembly());

builder.RegisterType<MyProperty>().As<IProperty>();
builder.RegisterType<CustomFilterAttribute>().SingleInstance();

builder.RegisterFilterProvider();

IContainer container = builder.Build();

DependencyResolver.SetResolver(new AutofacDependencyResolver(container));

注册您这样的全球性过滤器

public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
    filters.Add(new HandleErrorAttribute());
    filters.Add(DependencyResolver.Current.GetService<CustomFilterAttribute>());
}

确保在您的Global.asax你先登记Autofac然后全局过滤器。

现在，你不需要财产注入了，构造函数注入将正常工作这是一件好事！

文章来源: Register global filters in ASP.Net MVC 4 and Autofac