I am upgrading old Java EE application to Spring based solution. In the old applications there were custom annotations to create proxy inject proxy bean and intercept the method invocation [Interceptor classes implements MethodInterceptor) or (implements InvocationHandler), which used to perform some before and after execution stuff.

We have replaced those custom annotations with Spring marker interfaces like @Service, @Repository etc. and we are able to use @Autowire the bean instances. Now my question is how to intercept these autowired beans to perform per and post execution activities. One solution I can think is to use Spring AOP and use @Around pointcut. Just want to know is there any other and better alternative which can be used like

1. extending org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor
2. Using BeanFactoryPostProcessor or BeanPostProcessor.
3. Using InstantiationAwareBeanPostProcessor

CodePudding user response：

to inject proxy bean and intercept the method invocation [Interceptor classes implements MethodInterceptor) or (implements InvocationHandler), which used to perform some before and after execution stuff

You have to choices

• integrate this logic now inside your spring bean methods, so there is no before or after method invocation.
• Continue using before and after method invocation on your now spring bean by effectively using AOP feature of spring.

CodePudding user response：

Use PostConstruct annotation on the method which you wish to execute after bean creation.

import javax.annotation.PostConstruct;
import org.springframework.stereotype.Service;

@Service
public class FooService {
    @PostConstruct
    public void postConstructActivities() {
        //write your code here
    }
}