[英]Ninject 2 Property Injection for ActionFilterAttribute not working
I have a method attribute which expects several properties to be injected by Ninject 2, but userSession
and jobRepository
are coming up as null: 我有一个方法属性,它期望Ninject 2注入几个属性,但
userSession
和jobRepository
会出现为null:
[AttributeUsage(AttributeTargets.Method, AllowMultiple = false)]
public class JobAttribute : ActionFilterAttribute {
[Inject]
private IUserSession userSession;
[Inject]
private IJobRepository jobRepository;
public override void OnActionExecuting(ActionExecutingContext filterContext) {
var filter = new JobFilter(userSession, jobRepository);
filter.OnActionExecuting(filterContext);
}
}
And here is the method in the controller: 这是控制器中的方法:
[AcceptGet, Job]
public ActionResult Dimensions(Job job) {
return View(job.Building);
}
I know I have the setup working because if I use constructor injection on the controller the controller's parameters get injected. 我知道我的设置有效,因为如果我在控制器上使用构造函数注入,则会注入控制器的参数。 That doesn't help me much for attributes though that need to use property injection.
虽然需要使用属性注入,但这对属性没有多大帮助。 Am I missing something here?
我在这里错过了什么吗?
Here are the pertinent potions of Global.asax.cs: 以下是Global.asax.cs的相关部分:
public class MvcApplication : Ninject.Web.Mvc.NinjectHttpApplication {
protected override void OnApplicationStarted() {
RegisterRoutes(RouteTable.Routes);
RegisterAllControllersIn(Assembly.GetExecutingAssembly());
}
...snip...
protected override IKernel CreateKernel() {
return new StandardKernel(
new RepositoryConfiguration(),
new AuthenticationModule(),
new AutoMapperConfiguration()
);
}
}
public class RepositoryConfiguration : NinjectModule {
public override void Load() {
Bind<ICustomerRepository>().To<CustomerRepository>();
Bind<IJobRepository>().To<JobRepository>();
}
}
public class AuthenticationModule : NinjectModule {
public override void Load() {
Bind<MbdQuote.Core.AppService.IUserSession>().To<UserSession>();
}
}
Ninject2 does not do field injection, change them to properties with a public setter. Ninject2不进行字段注入,使用公共setter将它们更改为属性。
class JobAttribute : ActionFilterAttribute {
[Inject]
public IUserSession UserSession
{ set; private get; }
[Inject]
public IJobRepository JobRepository
{ set; private get; }
}
From the Ninject 2 Beta announcement : 来自Ninject 2 Beta 公告 :
Things that were in Ninject 1.x that are not in Ninject 2:
Ninject 1.x中没有出现在Ninject 2中的东西:
- Field injection: Ninject 2's injection is now driven by expression trees, and in .NET 3.5 there is no way to set field values with an expression tree.
现场注入:Ninject 2的注入现在由表达式树驱动,而在.NET 3.5中,无法使用表达式树设置字段值。 Since this is a bad practice anyway, I decided to cut it.
因为这是一个不好的做法,我决定削减它。
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