BookService bookService = (BookService) Proxy.newProxyInstance(BookService.class.getClassLoader()
		, newClass[]{BookService.class} , new InvocationHandler() {
					BookService bookService = new DefaultBookService();
					@Override
					public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
							if (method.getName().equals("rent")) {
								System.out.println("aaaa");
								Object invoke = method.invoke(bookService, args);
								System.out.println("bbbb");
								return invoke;
							}
							return method.invoke(bookService, args);
					}
			});

MethodInterceptor handler = new MethodInterceptor() {
		BookService bookService = new BookService();
		@Override
		public Object intercept(Object o, Method method, Object[] objects, MethodProxymethodProxy) throws Throwable {
				return method.invoke(bookService, objects);
		}
};

BookService bookService = (BookService) Enhancer.create(BookService.class, handler);

Class<? extends BookService> proxyClass = new ByteBuddy().subclass(BookService.class)
                .method(named("rent")).intercpt(InvocationHandlerAdapter.of(new InvocationHandler() {
                        BookService bookService = new BookService();
                        @Override
                        public Object invoke(Object proxy, Method method, object[] args) throws Throwable {
                                System.out.println("aaa");
                                Object invoke = method.invoke(bookService, args);
                                System.out.println("bbb");
                                return invoke;
                        )
                }))
                .make().load(BookService.class.getClassLoader()).getLoaded();
BookService bookService = proxyClass.getConstructor(null).newInstance();