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首先导入相关jar包

创建dao类IUserDao

package cn.qblank.aop.dao;import org.springframework.stereotype.Component;@Componentpublic interface IUserDao {	void add();	void delete();}

package cn.qblank.aop.dao.impl;import org.springframework.stereotype.Component;import cn.qblank.aop.dao.IUserDao;@Componentpublic class UserDao implements IUserDao{	@Override	public void add() {		int i = 1/0;		System.out.println("添加数据中...");	}	@Override	public void delete() {		System.out.println("删除数据...");	}}

package cn.qblank.aop;import org.aspectj.lang.ProceedingJoinPoint;import org.aspectj.lang.annotation.AfterThrowing;import org.aspectj.lang.annotation.Around;import org.aspectj.lang.annotation.Aspect;import org.springframework.stereotype.Component;@Component@Aspect  //指定为切面类public class Aop {	/**	 * 环绕	 * @param pjp	 * @return	 * @throws Throwable	 */	@Around("execution(public * cn.qblank.aop.dao.*.*(..))")	public Object around(ProceedingJoinPoint pjp) throws Throwable{		System.out.println("开启事务....");		Object obj = pjp.proceed();		System.out.println("提交事务....");		return obj;	}	/**	 * 抛出异常	 */	@AfterThrowing("execution(public * cn.qblank.aop.dao.*.*(..))")	public void afterThrowing(){		System.out.println("回滚事务!!!");	}}

package cn.qblank.aop;import org.springframework.context.annotation.ComponentScan;import org.springframework.context.annotation.Configuration;import org.springframework.context.annotation.EnableAspectJAutoProxy;@Configuration@ComponentScan("cn.qblank.aop")@EnableAspectJAutoProxypublic class AppConfig {	}

package cn.qblank.aop.Main;import org.springframework.context.annotation.AnnotationConfigApplicationContext;import cn.qblank.aop.AppConfig;import cn.qblank.aop.dao.IUserDao;public class Test {	public static void main(String[] args) {		//开启扫描		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(AppConfig.class);		IUserDao userDao = context.getBean(IUserDao.class);//		userDao.add();		userDao.delete();		context.close();	}}