java - 在 java main 中注入(inject)提供程序

Question

我有一个使用 Guice 的自定义提供程序，其伪代码如下:

public class MyProvider implements Provider<String> {
    public String get() {
        System.out.println("Called MyProvider.get()");
        return "abcd";
    }
}

public class MyModule extends AbstractModule {
    protected void configure() {
        bind(String.class).toProvider(MyProvider.class);
    }
}

public class MyManager {
    private MyProvider<String> myProvider;

    @Inject
    public MyManager(Provider<String> myProvider) { this.myProvider = myProvider; }
}

有一个 MyManager 对象，代表 Guice 连接后我们将来要构建的内容。现在为了真正开始这个，我有点迷失了......

public static void main(String[] args) {
    Injector injector = Guice.createInjector(new MyModule());

    // not sure what to do here.  This doesn't work but I thought it'd be something like this
    MyManager mgr = new MyManager(injector.getProvider(MyProvider.class));
}

Answer 1

我不确定这是否是“首选方式”，但这似乎有效:

Injector injector = Guice.createInjector(new MyModule());
MyManager mgr = injector.getInstance(MyManager.class);

想一想是否可以这样做？