我想要的是为我所有装饰有一些属性的组件创建缓存代理。所以,我制作了这样的 Autofac 模块:
public class CachingModule : Autofac.Module
{
private readonly ProxyGenerator generator;
public CachingModule()
{
generator = new ProxyGenerator();
}
protected override void AttachToComponentRegistration(IComponentRegistry componentRegistry, IComponentRegistration registration)
{
var type = registration.Activator.LimitType;
if (type.GetCustomAttribute<CachedAttribute>(true) != null
|| type.GetMethods().Any(m => m.GetCustomAttribute<CachedAttribute>(true) != null))
{
registration.Activating += (s, e) =>
{
var proxy = generator.CreateClassProxyWithTarget(e.Instance.GetType(),
e.Instance,
interceptors: e.Context.Resolve<IEnumerable<CacheInterceptor>>().ToArray());
e.ReplaceInstance(proxy);
};
}
}
}
我无法工作的是:我无法使用参数化构造函数创建代理实例,有什么办法可以做到这一点吗?