dependency-injection

问题 In a WPF project(with prism) we are using Unity as DI framework. Recently, after we merged two big branches, we were not able to start our application, we were having StackOverflowException . Due to the nature of the exception, we were not able to get his call stack or current values, we were only seing that the issue was comming from Unity due to the namespace. We spent more than 5 hours to find were the issue was occuring: Simplified: We were having 3-4 services(A, B, C and D), each one

问题 I find some answer: https://stackoverflow.com/a/21218921/2754014 about Dependency Injection. There isn't any annotation like @Autowired , @Inject or @Resource . let's assume that there isn't any XML configuration for this example TwoInjectionStyles bean (except simple <context:component-scan base-package="com.example" /> . Is it correct to inject without specify annotation? 回答1: From Spring 4.3 annotations are not required for constructor injection. public class MovieRecommender { private

问题 Before I start I must say that I maybe biting more than I can chew but I am in a desperate learning rampage and I need a lot of help. I am coding an exercise taking the samples from two books: 1. Dependency Injection in .Net by Mark Seemann 2. Professional ASP .Net Design Patterns by Brian Egan and Steve Valenzuela The exercise is implementing the Request/Response messaging pattern using WCF as the service layer AND using Dependency Injection from a Composition Root in the client application.

问题 Before I start I must say that I maybe biting more than I can chew but I am in a desperate learning rampage and I need a lot of help. I am coding an exercise taking the samples from two books: 1. Dependency Injection in .Net by Mark Seemann 2. Professional ASP .Net Design Patterns by Brian Egan and Steve Valenzuela The exercise is implementing the Request/Response messaging pattern using WCF as the service layer AND using Dependency Injection from a Composition Root in the client application.

问题 I am using Dagger2 for DI in my Android app, and using this code for injecting classes into my Activity is fine: @field:[Inject ApplicationContext] lateinit var context: Context but, lateinit modifier is not allowed on primitive type properties in Kotlin (for instance Boolean ), how can I do something like this? @field:[Inject Named("isDemo")] lateinit var isDemo: Boolean when I remove lateinit from this code I get this error Dagger does not support injection into private fields 回答1: First,

问题 I am using Dagger2 for DI in my Android app, and using this code for injecting classes into my Activity is fine: @field:[Inject ApplicationContext] lateinit var context: Context but, lateinit modifier is not allowed on primitive type properties in Kotlin (for instance Boolean ), how can I do something like this? @field:[Inject Named("isDemo")] lateinit var isDemo: Boolean when I remove lateinit from this code I get this error Dagger does not support injection into private fields 回答1: First,

问题 I am using Dagger2 for DI in my Android app, and using this code for injecting classes into my Activity is fine: @field:[Inject ApplicationContext] lateinit var context: Context but, lateinit modifier is not allowed on primitive type properties in Kotlin (for instance Boolean ), how can I do something like this? @field:[Inject Named("isDemo")] lateinit var isDemo: Boolean when I remove lateinit from this code I get this error Dagger does not support injection into private fields 回答1: First,

问题 Hi I have problem in the following scenario: I'm using Spring 4.xx with Jackson 2.xx and I'm ompelenting a RESTful Web Application. I'm now faced with te problem that I need some custom serialzation for one of my models, so i used a custom serilaizer, but i also need to fetch some data out of the database while serializing. So I tried to inject my Serivce into the Serializer but it always stays null. As far as I have read this happens if you instanciate your object directly, which I guess is

问题 I am struggling with a weird case. I have a .NET Core console application that is setup like this: private static async Task Main(string[] args) { var runAsService = !(Debugger.IsAttached || args.Contains("console")); var builder = new HostBuilder() .ConfigureServices((hostContext, services) => { services.AddLogging(loggingBuilder => { loggingBuilder.AddConsole(); }); services.AddGatewayServers(); services.AddHostedService<GatewayService>(); }); if (runAsService) await builder.RunServiceAsync

问题 My question based on InventorySampleApp by Microsoft. The ServiceLocator contains method Configure() that register Services and ViewModels. With method GetService<T>() we can get it. For example, ProductView.cs : ViewModel = ServiceLocator.Current.GetService<ProductDetailsViewModel>(); Each *ViewModel contains constructor with interface, for example: public ProductDetailsViewModel(IProductService productService, IFilePickerService filePickerService, ICommonServices commonServices) I can't