使用DefaultAdvisorAutoProxyCreator创建代理

根据spring-framework-reference,DefaultAdvisorAutoProxyCreator创建代理更加通用强大,使用此机制包括:
a.指定一个DefaultAdvisorAutoProxyCreator Bean的定义.
b.指定在相同或相关的上下文中任意数量的Advisor.注意,必须是Advisor，而不仅仅是interceptor或advice.这是必要的,因为必须有一个切点被评估,以便检查每个advice到候选bean定义是否合格.
下面举个应用例子.

1.主要依赖(略)

2.具体类.

 

@Configuration
public class AppConfig {
    //要创建代理的目标Bean
    @Bean
    public UserService userService(){
        return new UserServiceImpl();
    }
    //创建Advice
    @Bean
    public Advice myMethodInterceptor(){
        return new MyMethodInterceptor();
    }
    //使用Advice创建Advisor
    @Bean
    public NameMatchMethodPointcutAdvisor nameMatchMethodPointcutAdvisor(){
        NameMatchMethodPointcutAdvisor nameMatchMethodPointcutAdvisor=new NameMatchMethodPointcutAdvisor();
        nameMatchMethodPointcutAdvisor.setMappedName("pri*");
        nameMatchMethodPointcutAdvisor.setAdvice(myMethodInterceptor());
        return nameMatchMethodPointcutAdvisor;
    }
    @Bean
    public DefaultAdvisorAutoProxyCreator defaultAdvisorAutoProxyCreator(){
        return new DefaultAdvisorAutoProxyCreator();
    }
}

public interface UserService {
    void print();
}

public class MyMethodInterceptor implements MethodInterceptor {
    @Override
    public Object invoke(MethodInvocation invocation) throws Throwable {
        System.out.println(getClass()+"调用方法前");
        Object ret=invocation.proceed();
        System.out.println(getClass()+"调用方法后");
        return ret;
    }
}

public class Main {
    public static void main(String[] args) {
        ApplicationContext applicationContext=new AnnotationConfigApplicationContext(AppConfig.class);
        UserService userService= applicationContext.getBean(UserService.class);
        userService.print();
    }
}