使用setTarget和ProxyFactory（Object target）方法为同一对象创建的不同Aop代理

Question

这是代码

//IUserService is a interface
IUserService userService=new UserServiceImpl();

NameMatchMethodPointcut pointcut=new NameMatchMethodPointcut();
pointcut.addMethodName("save*");


LogAdvice logAdvice=new LogAdvice();


Advisor advisor=new DefaultPointcutAdvisor(pointcut,logAdvice);

//when set the target in constructor JdkDynamicAopProxy will be created
//ProxyFactory proxyFactory=new ProxyFactory(userService);
ProxyFactory proxyFactory=new ProxyFactory();
proxyFactory.addAdvisor(advisor);
//if use setTarget to set the target ObjenesisCglibAopProxy will be created
proxyFactory.setTarget(userService);

IUserService proxy=(IUserService) proxyFactory.getProxy();

proxy.queryUser();
proxy.saveUser();

使用setTarget或Constructor设置目标之间的区别在于，当Constructor中有setInterfaces(ClassUtils.getAllInterfaces(target));而不是setTarget时，我不会我不知道为什么，因为我认为IUserService是一个接口，所以无论我如何设置目标，都应该创建JdkDynamicAopProxy？ 春天的源代码版本是5.0.0.BUILD-SNAPSHOT