注射类为验证属性使用Unity 2和MVC 3 [英] Injecting class into Authentication attribute using Unity 2 and MVC 3
问题描述
我读了若干指出，如何做到这一点的文章，分别是：
<一个href=\"http://stackoverflow.com/questions/6121050/mvc-3-unity-2-inject-dependencies-into-a-filter\">Stack溢出的解决方案
这似乎的确工作得很好，但是当我遵循的一些准则从这里
<一个href=\"http://blogs.msdn.com/b/rickandy/archive/2011/05/02/securing-your-asp-net-mvc-3-application.aspx\"相对=nofollow>保护您的ASP.NET MVC 3应用程序
我似乎栽跟头。我的问题是，当我加我AuthorizationAttribute为GlobalFilter而不仅仅是装饰控制器/动作。虽然依赖关系解析器似乎打了个电话，把我的公共曝光[依赖关系]属性时，它实际上涉及到code，其中我重写AuthorizeAttribute的OnAuthorization（）方法，我的公开[依赖]部分属性为null
当我从全局过滤器删除它，装饰一个控制器，它似乎工作。
如果需要更多的信息，我可以张贴code。
编辑：
要在此位置进一步扩大是我的一些code的：
的global.asax.cs
公共静态无效RegisterGlobalFilters（GlobalFilterCollection过滤器）
{
//如果我有这个在这里我的[依赖性]属性不保持它的价值
//如果我删除它，装点控制器[依赖]属性保持它的价值
filters.Add（新BasicAuthenticationAttribute（））;
filters.Add（新HandleErrorAttribute（））;
}保护无效的Application_Start（）
{
AreaRegistration.RegisterAllAreas（）; RegisterGlobalFilters（GlobalFilters.Filters）;
的RegisterRoutes（RouteTable.Routes）; //服务和数据上下文的注射
VAR集装箱=新UnityContainer（）; //注射治疗服务
RegisterUnityServices（容器）; //过滤器提供了允许注入属性过滤器
RegisterUnityFilters（容器）; } 私人无效RegisterUnityServices（UnityContainer容器）
{
container.RegisterType＆LT; IDataContext，CDAXDataContext＆GT;（）; container.RegisterType＆LT; IUploadService，UploadService＆GT;（）;
container.RegisterType＆LT; IAuthenticationService，＆的AuthenticationService GT;（）; //此处添加更多的服务......
DependencyResolver.SetResolver（新Models.UnityDependencyResolver（容器））;
} 私人无效RegisterUnityFilters（UnityContainer容器）
{
VAR oldProvider = FilterProviders.Providers.Single（F =＆GT; f为FilterAttributeFilterProvider）;
FilterProviders.Providers.Remove（oldProvider）; VAR提供商=新UnityFilterAttributeFilterProvider（容器）;
FilterProviders.Providers.Add（供应商）;
}
我的布拉德威尔逊例子采取统一的类：
公共类UnityDependencyResolver：的IDependencyResolver
{
只读IUnityContainer _container; 公共UnityDependencyResolver（IUnityContainer容器）
{
this._container =容器;
} 公共对象GetService的（类型的serviceType）
{
尝试
{
返回_container.Resolve（的serviceType）;
}
抓住
{
返回null;
}
} 公共IEnumerable的＆LT;对象＆gt; GetServices（类型的serviceType）
{
尝试
{
返回_container.ResolveAll（的serviceType）;
}
抓住
{
返回新的List＆LT;对象＆gt;（）;
}
}
}
和
公共类UnityFilterAttributeFilterProvider：FilterAttributeFilterProvider
{
私人IUnityContainer _container; 公共UnityFilterAttributeFilterProvider（IUnityContainer容器）
{
_container =容器;
} 公共覆盖的IEnumerable＆LT;滤光器＆gt; GetFilters（ControllerContext controllerContext，ActionDescriptor actionDescriptor）
{
VAR过滤器= base.GetFilters（controllerContext，actionDescriptor）; 的foreach（在过滤器变种过滤器）
{
_container.BuildUp（filter.Instance）;
} 返回过滤器;
} 保护覆盖的IEnumerable＆LT; FilterAttribute＆GT; GetControllerAttributes（
ControllerContext controllerContext，
ActionDescriptor actionDescriptor）
{ VAR属性= base.GetControllerAttributes（controllerContext，
actionDescriptor）;
的foreach（在属性var属性）
{
_container.BuildUp（attribute.GetType（），属性）;
} 返回属性;
} 保护覆盖的IEnumerable＆LT; FilterAttribute＆GT; GetActionAttributes（
ControllerContext controllerContext，
ActionDescriptor actionDescriptor）
{ VAR属性= base.GetActionAttributes（controllerContext，
actionDescriptor）;
的foreach（在属性var属性）
{
_container.BuildUp（attribute.GetType（），属性）;
} 返回属性;
}
}
和我BasicAuthenticationAttribute的基础上，我对将要被设置，但不能维持的价值[依赖]属性时，在 OnAuthorization 方式被激发。
公共类BasicAuthenticationAttribute：AuthorizeAttribute
{
[依赖]
公共IAuthenticationService认证{搞定;组; } 私人无效CacheValidateHandler（HttpContext的背景下，对象数据，参考HttpValidationStatus validationStatus）
{
validationStatus = OnCacheAuthorization（新HttpContextWrapper（上下文））;
} 公共覆盖无效OnAuthorization（AuthorizationContext filterContext）
{
// code这里使用的身份验证属性，但它为空
}
你拿到这解决了吗？
我认为你需要调用DependencyResolver在属性类......不知道，如果 [依赖] 属性在这里工作......所以在 OnAuthorization 方法调用 IAuthenticationService认证= DependencyResolver.Current.GetService＆LT; IAuthenticationService＆GT;（）;
I've read a number of articles that point out how to do this, namely:
Brad Wilsons excellent tutorial
These do appear to work well, however when I follow some of the guidelines from here
Securing your ASP.NET MVC 3 Application
I seem to come a cropper. The issue for me is when I add my AuthorizationAttribute as a GlobalFilter rather than just decorating a controller/action. Although the dependancy resolvers seem to be called and set my Public exposed [Dependancy] property when it actually comes to the part of the code where I am overriding the OnAuthorization() method of AuthorizeAttribute, my public [Dependency] attribute is null.
When I remove it from global filter and decorate a controller it seems to work.
I can post code if more information is required.
EDIT: To further expand on this here is some of my code:
global.asax.cs
public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
// If I have this here the my [Dependency] attribute does not keep it's value
// If I remove it and decorate the controller the [Dependency] attribute keeps it value
filters.Add(new BasicAuthenticationAttribute());
filters.Add(new HandleErrorAttribute());
}
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
RegisterGlobalFilters(GlobalFilters.Filters);
RegisterRoutes(RouteTable.Routes);
// injection of services and data contexts
var container = new UnityContainer();
// injections for services
RegisterUnityServices(container);
// Filter provides to allow injection into attribute filters
RegisterUnityFilters(container);
}
private void RegisterUnityServices(UnityContainer container)
{
container.RegisterType<IDataContext, CDAXDataContext>();
container.RegisterType<IUploadService, UploadService>();
container.RegisterType<IAuthenticationService, AuthenticationService>();
// add more services here ...
DependencyResolver.SetResolver(new Models.UnityDependencyResolver(container));
}
private void RegisterUnityFilters(UnityContainer container)
{
var oldProvider = FilterProviders.Providers.Single(f => f is FilterAttributeFilterProvider);
FilterProviders.Providers.Remove(oldProvider);
var provider = new UnityFilterAttributeFilterProvider(container);
FilterProviders.Providers.Add(provider);
}
My Unity classes taken from brad wilsons examples:
public class UnityDependencyResolver : IDependencyResolver
{
readonly IUnityContainer _container;
public UnityDependencyResolver(IUnityContainer container)
{
this._container = container;
}
public object GetService(Type serviceType)
{
try
{
return _container.Resolve(serviceType);
}
catch
{
return null;
}
}
public IEnumerable<object> GetServices(Type serviceType)
{
try
{
return _container.ResolveAll(serviceType);
}
catch
{
return new List<object>();
}
}
}
And
public class UnityFilterAttributeFilterProvider : FilterAttributeFilterProvider
{
private IUnityContainer _container;
public UnityFilterAttributeFilterProvider(IUnityContainer container)
{
_container = container;
}
public override IEnumerable<Filter> GetFilters(ControllerContext controllerContext, ActionDescriptor actionDescriptor)
{
var filters = base.GetFilters(controllerContext, actionDescriptor);
foreach (var filter in filters)
{
_container.BuildUp(filter.Instance);
}
return filters;
}
protected override IEnumerable<FilterAttribute> GetControllerAttributes(
ControllerContext controllerContext,
ActionDescriptor actionDescriptor)
{
var attributes = base.GetControllerAttributes(controllerContext,
actionDescriptor);
foreach (var attribute in attributes)
{
_container.BuildUp(attribute.GetType(), attribute);
}
return attributes;
}
protected override IEnumerable<FilterAttribute> GetActionAttributes(
ControllerContext controllerContext,
ActionDescriptor actionDescriptor)
{
var attributes = base.GetActionAttributes(controllerContext,
actionDescriptor);
foreach (var attribute in attributes)
{
_container.BuildUp(attribute.GetType(), attribute);
}
return attributes;
}
}
And the basis of My BasicAuthenticationAttribute where I have the [Dependency] property that is being set but not maintaining the value when the OnAuthorization method is fired.
public class BasicAuthenticationAttribute : AuthorizeAttribute
{
[Dependency]
public IAuthenticationService Authentication { get; set; }
private void CacheValidateHandler(HttpContext context, object data, ref HttpValidationStatus validationStatus)
{
validationStatus = OnCacheAuthorization(new HttpContextWrapper(context));
}
public override void OnAuthorization(AuthorizationContext filterContext)
{
// code here that uses the Authentication attribute but it's null
}
Did you get this solved?
I think you need to call the DependencyResolver in the attribute class...Not sure if the [Dependency] attribute works here...so in the OnAuthorization method call IAuthenticationService authentication = DependencyResolver.Current.GetService<IAuthenticationService>();
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