java jdk与cglib代理代码实现

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java jdk与cglib代理代码实现

github代码: https://github.com/Gefuxing/proxytest.git

动态代理
jdk
public class ProxyTest {
    public static void main(String[] args) {
        /**
         * jdk动态代理
         */
        UserService userService = new UserServiceImpl();
        InvocationHandler handler = new MyInvocationHandler<UserService>(userService);

        UserService proxy= (UserService) Proxy.newProxyInstance(UserService.class.getClassLoader(), new Class[]{UserService.class}, handler);

        User userById = proxy.findUserById(1);
        System.out.println(userById.toString());
        /**
         * cglib动态代理
         */
    }
}


public class MyInvocationHandler<T> implements InvocationHandler {
    private T targe;
    public MyInvocationHandler(T targe) {
        this.targe = targe;
    }
    @Override
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        Object invoke = method.invoke(targe, args);
        return invoke;
    }
}

cglib
public class MainTest {
    public static void main(String[] args) {
        Enhancer enhancer = new Enhancer();
        enhancer.setSuperclass(UserCglib.class);
        enhancer.setCallback(new UserCglbInterceptor());
        UserCglib userCglib = (UserCglib) enhancer.create();
        String gfx = userCglib.getName("gfx");
        Integer num = userCglib.getNum(0);
        System.out.println("cglib"+gfx+"-"+num);
    }
}
public class UserCglbInterceptor implements MethodInterceptor {
    @Override
    public Object intercept(Object o, Method method, Object[] objects, MethodProxy methodProxy) throws Throwable {
        Object invoke = methodProxy.invokeSuper(o, objects);
        System.out.println("cglib代理方法");
        return invoke;
    }
}

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