Autofac抛出ObjectDisposedException

时间:2012-06-15 10:31:27

标签: .net asp.net-mvc asp.net-mvc-3 autofac

我最近将Autofac 2.6.2添加到我的一个ASP.NET MVC项目中。

我遇到了一个问题,当我想解析我的WebDataContext时,我有一个ObjectDisposedException:

Instances cannot be resolved and nested lifetimes cannot be
created from this LifetimeScope as it has already been disposed.

当我调用我的索引页面时,我的浏览器会发送许多请求以获取索引页面和所需的所有其他资源(css,js等)。其中一个请求可以解析IWebDataContext,而其他所有请求都会抛出ObjectDisposedException。

所以我的代码看起来像这样:

protected void Application_Start()
{
    MyContext.Initialize();
    DependencyResolver.SetResolver(new AutofacDependencyResolver(MyContext.Container));
    [...]
}

public class MyContext
{
    public static IContainer Container { get; set; }

    public static void Initialize()
    {
        ContainerBuilder container = new ContainerBuilder();
        IDependencyRegistrar registrar = new DependencyRegistrar();
        registrar.Register(container);
        MyContext.Container = container.Build();
    }

    public static IEngine Engine
    {
        get { return Singleton<IEngine>.Instance; }
    }
}

public class DependencyRegistrar : IDependencyRegistrar
{
    public void Register(object containerBuilder)
    {
        ContainerBuilder builder = (ContainerBuilder)containerBuilder;
        builder.RegisterControllers(Assembly.GetExecutingAssembly());
        builder.RegisterType<WebDataContext>().As<IWebDataContext>().InstancePerHttpRequest();
            [...]
}

最后我解决注册依赖项的方式:

public class MyEngine : IEngine
{
    public T Resolve<T>() where T : class
    {
        return DependencyResolver.Current.GetService<T>();
    }
}

我的想法:一个线程处理WebDataContext,所有其他线程无法再访问它。有人可以告诉我,如果我忘记了某些内容并且我的代码是否是线程安全的吗?

1 个答案:

答案 0 :(得分:4)

我发现了这个问题,我在我的Application_Error事件中调用Resolve方法是不可能的,因为autofac之前会处理它的资源!