为什么@Autowired 在我的 Controller 中有效，但在我的服务中无效？

Question

In the MyController , @Autowired works fine to pull in myService without getters/setters:

@Controller
public class MyController
{
    @Autowired
    private MyService myService;

But when I try to apply the @Autowired annotation to the myOtherService field of MyService , I get an error saying it can't find a necessary setter method for myOtherService -- but it works if I fill in the getter and setter methods for this field:

THIS WORKS:

@Service
public class MyService
{
    private MyOtherService myOtherService;

    public void setMyOtherService(MyOtherService myOtherService)
    {
        this.myOtherService = myOtherService;
    }

    public MyOtherService getMyOtherService()
    {
        return myOtherService;
    }

THIS DOESN'T WORK:

@Service
public class MyService
{
    @Autowired
    private MyOtherService myOtherService;

Does @Autowired only work on controllers?

Answer 1

You gave your answer - you don't have <context:component-scan /> for the service package. If you add it, you'll have annotation autowiring