动态代理（JDK、CGLIB）

public class CutomerService implements ICutomerService{

    @Override
	public void test(){
		System.out.println("customer...test...");
	}

	public static void main(String[] args) {
		CutomerService target = new CutomerService();
		/**
		 * cglib实现
		 */
		Enhancer enhancer = new Enhancer();
		enhancer.setSuperclass(CutomerService.class);
		enhancer.setCallbacks(new Callback[]{new MethodInterceptor() {
			@Override
			public Object intercept(Object o, Method method, Object[] objects, MethodProxy methodProxy) throws Throwable {
				System.out.println("cglib...start...");
				Object result = methodProxy.invoke(target, objects);
				System.out.println("cglib...after...");
				return result;
			}
		}});
		CutomerService proxy = (CutomerService) enhancer.create();
		proxy.test();
		/**
		 * jdk实现
		 */
		Object proxy = Proxy.newProxyInstance(target.getClass().getClassLoader(), target.getClass().getInterfaces(), new InvocationHandler() {
			@Override
			public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
				System.out.println("jdk...start...");
				Object result = method.invoke(target, args);
				System.out.println("jdk...start...");
				return result;
			}
		});
		ICutomerService cutomerService = (ICutomerService) proxy;
		cutomerService.test();
	}
}