java cglib动态代理

CGLIB全网详细教程

模块导入cglib
源码地址：https://github.com/cglib/cglib
获取当前最新版本：cglib-nodep-3.3.0.jar


定义主题业务操作类

class Message {
    public void send() {
        System.out.println("【Message】www.baidu.com");
    }
}

定义代理类

class ProxyUtil implements MethodInterceptor {
    private Object target;

    public ProxyUtil(Object target) {
        this.target = target;
    }

    public Object createProxy() {
        Enhancer enhancer = new Enhancer();
        enhancer.setSuperclass(this.target.getClass());
        enhancer.setCallback(this);
        return enhancer.create();
    }

    @Override
    public Object intercept(Object o, Method method, Object[] objects, MethodProxy methodProxy) throws Throwable {
        Object result = null;
        System.out.println("【ProxyUtil】before invoke...");
        //result = methodProxy.invokeSuper(o, objects);
        result = method.invoke(this.target, objects);
        System.out.println("【ProxyUtil】after invoke...");

        return result;
    }
}

测试代码

public class CGLibDemo {
   public static void main(String[] args) {
       Message message = (Message) new ProxyUtil(new Message()).createProxy();
       message.send();
   }
}

程序执行结果

【ProxyUtil】before invoke...
【Message】www.baidu.com
【ProxyUtil】after invoke...