Prevent autowiring by type for certain beans in Spring

Question

In my spring context I am creating a service bean and a proxy for this service bean (explicitly). Both implement the same interface.

Can I ensure that autowiring cannot inject the target bean?

I would like to be able to use the target service with the @Resource or @Qualifier annotations, but when autowiring it should always be the proxy.

Any ideas?

Maybe this post could help you http://stackoverflow.com/questions/10534053/autowiring-two-beans-implementing-same-interface-how-to-set-default-bean-to-au — jmventar, Feb 19 '13 at 10:26
What does the proxy do? How do you create you application context (xml, java, annotation scanning)? — Philippe Marschall, Feb 19 '13 at 12:20
The proxy is a facade for the target bean. The context is created in xml, but with custom namespace, a custom parser, and the proxy created with a BeanFactory. — Dennis Thrysøe, Feb 20 '13 at 10:51

score 2 · Accepted Answer · answered Feb 19 '13 at 10:30

2

Use the Primary annotation. It will indicate which bean should be use preferably when autowiring.

Hope this helps :)

answered Feb 19 '13 at 10:30

Caesar Ralf

1

There's also an XML attribute `primary="true"` if you're using XML configuration. This configuration tells Spring to always use this bean if there are multiple candidate beans for autowiring. – Philipp Jardas Feb 24 '13 at 12:16

score 0 · Answer 2 · answered Feb 24 '13 at 18:06

You can put @Primary annotation in your proxy service like bellow:

@Primary
@Repository
public class ProxyOfSomeService implements SomeService

And after that when you use, @Autowired annotation on SomeService field, the ProxyOfSomeService will be injected by deafault.

But when you need the real service you can have it like bellow:

@Autowired
@Resource(name="someRealService")
private SomeService someService;

I think this serves your need, thanks!

2 Answers2