dependency-injection | 易学教程

Dagger 2 - How does marking a class constructor with @Inject without component registration work

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问题 i have dagger already set up with two components. One component is a subcomponent of another, big deal. Everything works. But then i randomly wanted to try constructor injection so i created a random class and marked its constructor with the Inject annotation and to my surprise when i wnated to inject this class it works ? my Component(s) know nothing about this. I have no written in my components interface about this class. its just a random class that has a constructor annotated with

typescript dependency injection framework

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问题 I am writing a simple library using TypeScript (not using angular). I need to use a DI framework in this library. I checked out the DI framework in Angular2, but this seems like an overkill and I need to wrap my whole library in an Angular module which I don't want to do. 回答1: I don't use DI in TypeScript/ES6 for production (yet) because they are not yet finalized. For experimenting, I used needlepoint which was at the time I was using ES6. But for typescript, typescript-ioc looks like it's a

Angularjs: [$injector:modulerr] Failed to instantiate module ui-router

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问题 I'm a relative newbie in Angular and after following the tutorial I now want to build something from scratch on my own. So I'm trying to set up a basic app in which I want to use the $stateProvider (since I read that it is better than the $routeProvider). So this is my html: <html ng-app="formApp"> <head> <script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.3/angular.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/angular-ui-router/0.2.15/angular-ui-router.js">

Symfony 3.3 - Autowiring Deprecation Guzzle

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问题 since i plan to upgrade my Symfony version i want to remove all Deprecations. I cant figure out how to remove my last two errors. One is Autowiring services based on the types they implement is deprecated since Symfony 3.3 and won't be supported in version 4.0. You should rename (or alias) the "eight_points_guzzle.client.trigger_api" service to "GuzzleHttp\ClientInterface" instead. But in my serivce, i already use the client interface to inject public function __construct( LoggerInterface

How do I inject dependency in owin startup class

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问题 In my web api application I implemented OAuth2. On GrantResourceOwnerCredentials of ApplicationOAuthProvider I am calling my custom membership service to login and get the token.The problem is I have to inject the membership service into ApplicationOAuthProvider in order to use the service but it didn't allow it due to owinStartup class which don't support the parameter constructor.How do I inject/use my membership service in GrantResourceOwnerCredentials method. public class

SignalR Autofac Inject Authorize Attribute

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问题 I'm trying to figure out a way to inject dependencies into my AuthorizeAttribute in SignalR similar to the way it is done in WebAPI. In Web API I know I can call builder.RegisterWebApiFilterProvider(config); but I can't quite seem to find an equivalent for SignalR. The closest thing I can find that looks like it might do the trick is the PropertiesAutowired() method. I have tried builder.RegisterType<MyAuthorizationAttribute>.PropertiesAutowired(); where my attribute looks like public class

AngularJS 1.6 application bug: turning items pagination into a service does not work

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问题 I am making a small Contacts application with Bootstrap 4 and AngularJS v1.6.6 . The application simply displays an Users JSON. Since the JSON returns a large number of users, the application also has a pagination feature. The pagination worked fine as part of the app's controller, but since I tried to turn it into a service, it does not work anymore. See a functional version of the application, with the pagination inside the controller HERE. The application controller: // Create an Angular

How DI container knows what Constructors need (ASP.NET Core)?

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问题 I've read a lot of docs on what is DI and how to use it (related to ASP.NET Core). As I understand when framework instantiates some controller for me it somehow knows what that controller's class need to pass to constructor. Is it reflection or something? Can someone show me where can I see it on ASP.NET Core GitHub sources? 回答1: The constructor selection behavior of the ASP.NET Core DI on the current RC1 is rather complicated. In the past it only supported types with a single constructor,

symfony 3 Argument 1 passed to [some service]::__construct() must be an instance of [something] instance of Doctrine\ORM\EntityRepository given

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问题 I am trying to create a service: <?php namespace AppBundle\Service; use AppBundle\Repository\GroupEntityRepositoryInterface; use AppBundle\Repository\GroupUserRepository; use AppBundle\Repository\GroupUserRepositoryInterface; use AppBundle\Entity\Group; use AppBundle\Repository\GroupRepository; class GroupUserService { private $groupRepository; private $groupUserRepository; /** * @param GroupRepositoryInterface $groupRepository * @param GroupUserRepositoryInterface $groupUserRepository */

Structure Map - Collection of Dependencies in Constructor

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问题 I have the following code in my Registry: Scan(x => { x.Assembly(Assembly.GetExecutingAssembly()); x.AddAllTypesOf<IXmlExtractor>(); }); This code adds all instances of IXmlExtractor in my assembly to the IoC container. Now I want to use all found instances in my class, but I prefer to inject via constructor than to use ObjectFactory in a method. Hopefully code below illustrates what I want to do: class Engine : IEngine { private readonly ILog _logger; private readonly ICurveConfigRepository