我使用 ASP MVC 3 (RC) 和 Unity 2 取得了巨大成功。但是,我有一个无法解决的问题。在幕后,我使用通过存储库访问的 POCO (Person, Company, ...)。存储库作为泛型 (EFRepository) 制作,并使用上下文。如果通用存储库类型上没有 LifetimeManager,一切都会按预期工作:
var container = new UnityContainer();
container
.RegisterType<ObjectContext, DataLayerContext>(
new HttpRequestLifetimeManager<ObjectContext>())
.RegisterType(typeof(IRepository<>), typeof(EFRepository<>))
//Works
var unitOfWork = (IUnitOfWork)DependencyResolver.Current.GetService<IUnitOfWork>());
//Works
var webPersonRepository = (IRepository<WebPerson>)DependencyResolver.Current.GetService<IRepository<WebPerson>>();
但是,当也将 LifetimeManager 添加到存储库时,解析失败:
var container = new UnityContainer();
container
.RegisterType<ObjectContext, DataLayerContext>(
new HttpRequestLifetimeManager<ObjectContext>())
.RegisterType(typeof(IRepository<>), typeof(EFRepository<>),
new HttpRequestLifetimeManager(typeof(IRepository<>)))
//Works
var unitOfWork = (IUnitOfWork)DependencyResolver.Current.GetService<IUnitOfWork>());
//Does NOT work anymore!
var webPersonRepository = (IRepository<WebPerson>)DependencyResolver.Current.GetService<IRepository<WebPerson>>();
有任何想法吗?HttpRequestLifetimeManager 的实现非常标准:
public class HttpRequestLifetimeManager<T> : HttpRequestLifetimeManager
{
public HttpRequestLifetimeManager() : base(typeof(T))
{
}
}
public class HttpRequestLifetimeManager : LifetimeManager, IDisposable
{
private readonly string _key;
public HttpRequestLifetimeManager(Type T)
{
_key = @"HttpRequestContextLifetimeManager" + T.Name;
}
public override object GetValue()
{
return HttpContext.Current.Items[_key];
}
public override void RemoveValue()
{
HttpContext.Current.Items.Remove(_key);
}
public override void SetValue(object newValue)
{
HttpContext.Current.Items[_key] = newValue;
}
public void Dispose()
{
RemoveValue();
}
}
任何帮助将不胜感激!
谢谢!/胜利者