基于约定的Ninject 3.0.0依赖注入 [英] Convention Based Dependency Injection with Ninject 3.0.0

问题描述

我的解决方案中有两个项目:域项目和MVC3 Web项目(例如MyApp.Domain和MyApp.Web).以前，使用 Ninject.Extensions.Conventions 版本时. 2，我能够在NinjectMVC3.cs文件中使用以下语句，并且正确注入了整个解决方案(网络和域)中所需的依赖项(例如IFoo自动绑定到Foo).

I have two projects in my solution... a domain project and MVC3 web project (e.g. MyApp.Domain and MyApp.Web). Previously, when using Ninject.Extensions.Conventions ver. 2, I was able to use the following statement in the NinjectMVC3.cs file, and required dependencies throughout my solution (both web and domain) were injected properly (e.g. IFoo automatically bound to Foo).

kernel.Scan(x =>
{
  x.FromAssembliesMatching("*");
  x.BindWith<DefaultBindingGenerator>();
});

我刚刚升级到Ninject 3.0.0(预发行版)和Ninject.Extensions.Conventions 3.0.0(另一个预发行版)，但是基于约定的绑定的语法已更改.我发现我可以在新版本中使用以下语句，但是它只会自动在MyApp.Web中绑定基于约定的接口，而不能在MyApp.Domain中绑定.以前的版本绑定了整个应用程序的接口.

I have just upgraded to Ninject 3.0.0 (pre-release) and Ninject.Extensions.Conventions 3.0.0 (another pre-release) but the syntax for convention based binding has changed. I have figured out that I can use the following statement with the new version, but it only automatically binds the convention based interfaces in MyApp.Web and not in MyApp.Domain. The previous version bound interfaces throughout the application.

kernel.Bind(x => x
    .FromThisAssembly()
    .SelectAllClasses()
    .BindToAllInterfaces());

有什么线索可以使用新的Ninject版本配置基于约定的绑定吗?我认为这与指定程序集有关，但是我尝试使用FromAssembliesMatching("*")，然后对于所有内容都失败了.

Any clue how I can configure convention based binding with the new Ninject version? I assume it has to do with specifying the assembly, but I have tried using FromAssembliesMatching("*") and it fails for everything then.

-编辑以在RegisterServices方法中显示现有代码:-

private static void RegisterServices(IKernel kernel)
{
  // This code used to work with v.2 of Ninject.Extensions.Conventions
  // kernel.Scan(x =>
  // {
  //   x.FromAssembliesMatching("*");
  //   x.BindWith<DefaultBindingGenerator>();
  // });

  // This is the new v3 code that automatically injects dependencies but only for interfaces in MyApp.Web, not MyApp.Domain
  kernel.Bind(x => x.FromThisAssembly().SelectAllClasses().BindToAllInterfaces()); 

  // I tried this code, but it throws "Error activating IDependencyResolver" at "bootstrapper.Initialize(CreateKernel)"
  // kernel.Bind(x => x.FromAssembliesInPath(AppDomain.CurrentDomain.RelativeSearchPath).SelectAllClasses().BindToAllInterfaces());

  // These are dependencies in MyApp.Web that ARE being bound properly by the current configuration
  // kernel.Bind<IMemberQueries>().To<MemberQueries>();
  // kernel.Bind<IGrantApplicationQueries>().To<GrantApplicationQueries>();
  // kernel.Bind<IMailController>().To<MailController>();

  // These are dependencies in MyApp.Domain that ARE NOT being bound properly by the current configuration, so I have to declare them manually 
  // They used to be injected automatically with version 2 of the conventions extention
  kernel.Bind(typeof(IRepository<>)).To(typeof(Repository<>)).InRequestScope();
  kernel.Bind<IUnitOfWork>().To<UnitOfWork>().InRequestScope();
  kernel.Bind<IMemberServices>().To<MemberServices>();
  kernel.Bind<IGrantApplicationServices>().To<GrantApplicationServices>();

  // These are dependencies that SHOULD NOT be bound by convention as they require a different scope or have unique naming
  kernel.Bind(typeof(EfDbContext)).ToSelf().InRequestScope();
  kernel.Bind<IConfigurationProvider>().To<WebConfigConfigurationProvider>().InSingletonScope();
  kernel.Bind<IAuthorizationProvider>().To<MyAppAuthorizationProvider>();
  kernel.Bind<IPrincipal>().ToMethod(ctx => HttpContext.Current.User).InRequestScope();
  kernel.Bind<IGrantApplicationDocumentServices>().To<MySpecialNameGrantAplicationDocumentServices>().InRequestScope();
}

推荐答案

等效项是:

kernel.Bind(x => x
    .FromAssembliesMatching("*")
    .SelectAllClasses()
    .BindDefaultInterface());

这篇关于基于约定的Ninject 3.0.0依赖注入的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！