==============
动态代理易维护
==============

如果需要修改辅助功能，只需修改Before一个类即可，易于维护。

/src/main/java/cn/tedu/proxy/Before.java：

public class Before implements MethodBeforeAdvice {
    private Logger logger = Logger.getLogger(Before.class);

    @Override
    public void before(Method method, Object[] objects, Object o) throws Throwable {
        logger.debug(">>>> BEFORE >>>>");
    }
}

>>>> BEFORE >>>>
UserServiceImpl.register

>>>> BEFORE >>>>
UserServiceImpl.login

>>>> BEFORE >>>>
OrderServiceImpl.show

例程：Proxy