基于注释的工厂方法

Question

我希望能够自动装配单个bean(foo)

@Component
public class FooUser {

  @Autowire Foo foo;
}

由另一个单身人士的方法创建(FooFactory.createFoo)

@Service
public class FooFactory {

  public Foo createFoo() {...}
}

用xml就可以了factory-method.我怎么能用注释做到这一点？

Answer 1

尝试使用Java @Configuration:

@Configuration 
public class Config {

    @Bean
    public FooUser fooUser() {
        return new FooUser(foo());
    }

    @Bean
    public FooFactory fooFactory() {
        return new FooFactory();
    }

    @Bean
    public Foo foo() {
        return fooFactory().createFoo();
    }

}