简单的代理-cglib代理

1  一个简单的类

public class Dog {

     public void sayHi(String name) {
        System.out.println("汪汪------"+name);
    }

}

 

2 实现MethodInterceptor接口完成代理

public class CglibDemo implements MethodInterceptor {


    private  Object target;

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



    @Override
    public Object intercept(Object o, Method method, Object[] objects, MethodProxy methodProxy) throws Throwable {
        System.out.println("start---");
        Object returnObj = methodProxy.invokeSuper(o, objects);
        System.out.println("end---");
        return returnObj;
    }

    public static void main(String[] args) {
        CglibDemo cglibDemo =new CglibDemo();
        Dog target = (Dog)cglibDemo.getTarget(new Dog());
        target.sayHi("pp");

    }
}