AOP 详述JDK代理与CGLib代理区别

//JDK动态代理基于接口实现，所以实现JDK动态代理，必须先定义接口JDK代理与目标类没有关系

配置如下：

application.xml文件中

<aop:aspectj-autoproxy proxy-target-class="false"/>

Test:

package com.jd.test;

 

import org.springframework.cglib.core.DebuggingClassWriter;

import org.springframework.context.support.ClassPathXmlApplicationContext;

 

import com.jd.calculator.IUserInfoService;

 

public class Test {

 

    public static void main(String[] args) {

   

        ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("application.xml");

       

        ICalculatorService calculatorService =applicationContext.getBean(IUserInfoService.class);//不能写UserInfo.class

       

        Class clazz = calculatorService.getClass();

        System.out.println(clazz.getName());

 

        applicationContext.close();

    }

}

//CGLIB代理类继承目标类

application.xml文件中

<aop:aspectj-autoproxy proxy-target-class="true"/>

Test:

package com.jd.test;

 

import org.springframework.cglib.core.DebuggingClassWriter;

import org.springframework.context.support.ClassPathXmlApplicationContext;

 

import com.jd.calculator.IUserInfoService;

 

public class Test {

 

    public static void main(String[] args) {

   

        ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("application.xml");

       

        ICalculatorService calculatorService =applicationContext.getBean(UserInfoService.class);//因为代理类继承了目标类即可以调用实现接口

       

        Class clazz = calculatorService.getClass();

        System.out.println(clazz.getName());

 

        applicationContext.close();

    }

}