Understand the technical architecture of the ActiveJ: Inject framework

Understand the technical architecture of the ActiveJ: Inject framework ActiveJ: Inject is a powerful Java class library that provides a flexible and efficient dependent injection framework.When developing large applications, dependency injection is a very useful design mode. It can effectively manage and organize code, simplify the development process, and improve the maintenance of code and testability. ActiveJ: Inject provides a simple and intuitive way to manage the dependency relationship between objects.It allows developers to define the dependent relationship between objects and them in applications without manual creation and management of these objects.ActiveJ: Inject handed these tasks to the framework by automatically searching, creating and connecting objects. ActiveJ: Inject's technical architecture is based on annotations and reflexes. It uses Java's reflection mechanism to achieve dependent injection.Developers can use annotations to mark the dependencies that need to be injected, and then the framework will automatically scan these annotations and dynamically create and inject objects during runtime. The following is a simple example, demonstrating how to use dependency injection in ActiveJ: Inject: First of all, we need to create an injected class: public class UserRepository { // ... } Next, we can use dependencies injected in another class to access the instance of this class: public class UserService { @Inject private UserRepository userRepository; // ... } In the above code, the `@inject` annotation is used to mark the` userRePOSITOSITORY` field, telling the framework that needs to inject an instance of a `userRepository`. Finally, at the entry point of the application, we need to initialize the framework and start the application: public class Main { public static void main(String[] args) { Injector injector = Injector.create(); injector.injectClass(UserService.class); // ... } } In the above code, we first created an object of the `Injector`, and then use the` InjectClass` method to tell the framework to inject the dependencies in the `userService` class. ActiveJ: Inject also provides more advanced functions, such as the control of the scope of the injection, the solution of recycling dependence, the conditional dependency injection, and so on.It also supports the use of configuration files to manage dependencies, making the configuration more flexible and scalable. In summary, ActiveJ: Inject is a powerful Java class library that provides a simple and intuitive dependent injection framework.Its technical architecture is based on annotations and reflexes. Through automatic search, creation and injection objects, the development process is simplified, which improves the maintenance and testability of the code.