dependency-injection

问题 In my ASP.Net Core MVC 6 solution I have two sets of controllers. One set contains the webpages with their regular views. Another set contains the API controllers. To avoid duplicating db logic the web controllers are using the API controllers. Currently I am creating an instance of the required controller manually by handing it a DbContext as constructor argument. This is the DbContext given to web controller by dependency injection. But whenever I add another constructor parameter to the

问题 I am trying to write a Unit test for a class that has several of its fields marked @Autowired. Given the fact that Spring is automatically resolving the concrete implementations for these fields, I am having a hard time figuring out how to plug my Mock objects(created via EasyMock) as the dependencies during the test-run. Using @Autowired in the class means lack of setters in that class. Is there a way for me to plug my mock objects in without creating additional setters in class? Here's an

问题 Consider below code sample: public interface IMyInterface { void SetName(string name); string GetName(); } public class MyInterfaceImplementor1 : IMyInterface { protected string Name { set; get; } public void SetName(string name) { this.Name = name; } public virtual string GetName() { return this.Name; } } public class MyInterfaceImplementor2 : MyInterfaceImplementor1 { public override string GetName() { return String.Format("Hello! {0}", base.Name); } } And the DI configuration for this: (

问题 As a reply to an earlier question (Accessing ILogger from non-Controller classes in Class Libary .NET Core 3), we can inject the dependent class into the controller. The DI Container resolves dependencies on registration of Transient services at the time of Startup. Hence if a ClassA is instantiated by a Controller, as a result of this mechanism, we can access ILogger in Class A. Original question code sample: public class Startup { ... public void ConfigureServices(IServiceCollection

问题 As a reply to an earlier question (Accessing ILogger from non-Controller classes in Class Libary .NET Core 3), we can inject the dependent class into the controller. The DI Container resolves dependencies on registration of Transient services at the time of Startup. Hence if a ClassA is instantiated by a Controller, as a result of this mechanism, we can access ILogger in Class A. Original question code sample: public class Startup { ... public void ConfigureServices(IServiceCollection

问题 For a long time now we've been fortunate enough to have the Common Service Locator (CSL) to resolve services from an unknown source. However, there has never been any container-agnostic solution for registering these services in the first place. We've always been faced with the problem of having to couple our composition code to a particular IoC container, and furthermore, be committed to using that container throughout our entire application. I feel I may be trying to achieve the impossible

问题 For a long time now we've been fortunate enough to have the Common Service Locator (CSL) to resolve services from an unknown source. However, there has never been any container-agnostic solution for registering these services in the first place. We've always been faced with the problem of having to couple our composition code to a particular IoC container, and furthermore, be committed to using that container throughout our entire application. I feel I may be trying to achieve the impossible

问题 I am trying to follow this post's upvoted answer: Best practice for REST token-based authentication with JAX-RS and Jersey I'm using the CDI approach and in my filter i have the definition: @Inject @AuthenticatedUser Event<String> userAuthenticatedEvent; But, when I run tomcat 7, I get the following error: org.glassfish.hk2.api.UnsatisfiedDependencyException: There was no object available for injection at SystemInjecteeImpl(requiredType=Event<String>,parent=AuthenticationFilter,qualifiers={

问题 My application is throwing: java.lang.RuntimeException: Deferred binding failed for 'com.mygwtapp.client.gin.ClientAppGinjector' (did you forget to inherit a required module?) on this code inside the EntryPoint: private final ClientAppGinjector injector = GWT.create(ClientAppGinjector.class); What could be the problem? Here's the full error Log: java.lang.RuntimeException: Deferred binding failed for 'com.mygwtapp.client.gin.ClientAppGinjector' (did you forget to inherit a required module?)

问题 I'm trying to inject a dependency into the shared layout view page to avoid having to do it in every view that uses the layout. I've followed the guidance in the wiki for injecting dependencies into views, but the property is always null. Can Autofac inject properties into a custom view page that is a layout file? Here's my setup. CustomViewPage namespace MyApp { using System.Web.Mvc; public abstract class CustomViewPage : WebViewPage { public IHelper Helper { get; set; } } } ~/Views/Shared/