Spring DI使用无法进行bean化的旧对象

时间:2012-03-15 05:14:24

标签: java spring dependency-injection guice

我想将以下基于Guice的DI配置转换为基于Spring Java-config的DI。

public class UserModule extends AbstractModule {

    private final User user;

    public UserModule(User user) {
        this.user = user;
    }

    @Override
    protected void configure() {
       // don't need to do any configuration
    }

    @Provides @Singleton
    User provideUser() {
        return user;
    }

    @Provides @Singleton @Inject
    UserStorageService provideUserStorageService(User u) {
        return new UserStorageServiceImpl(u);
    }
}

那么预期用途是

Injector userOneInjector = Guice.createInjector(new UserModule(userOne));
Injector userTwoInjector = Guice.createInjector(new UserModule(userTwo));

不幸的是,Spring的AnnotationConfigApplicationContext接受了一个配置类而不是一个对象,因此我不确定如何将一个User对象注入其配置中。

1 个答案:

答案 0 :(得分:2)

单独的@Configuration类来隔离“非标准”对象?

@Configuration
public class ConfigA {
    public @Bean User getUser () {
        // Here do whatever it takes to create/lookup the user
        return new User();
    }
}