前言

本文简介spring aop注解的使用方式

1.创建实体类

@Data
public class Peach {
    private String name;
    private int price;

    public void grow() {
        System.out.println("peach grow...");
    }
}

2.创建切面

@Aspect
public class PeachAspect {

    /**
     * 定义切点
     */
    @Pointcut("execution(* com.cqliu.aop.Peach.grow(..))")
    private void execute() {}

    @Before("execute()")
    private void before(JoinPoint joinPoint) {
        System.out.println("Peach before...");
    }

    @After("execute()")
    private void after(JoinPoint joinPoint) {
        System.out.println("Peach after...");
    }

    @AfterReturning("execute()")
    private void afterReturn(JoinPoint joinPoint) {
        System.out.println("Peach afterReturn...");
    }

    @AfterThrowing("execute()")
    private void afterThrow(JoinPoint joinPoint) {
        System.out.println("Peach afterThrow..");
    }

    @Around("execute()")
    private void around(ProceedingJoinPoint point) throws Throwable {
        System.out.println("Peach around_start");
        point.proceed();
        System.out.println("Peach around_end");
    }
}

3.配置文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
    <aop:aspectj-autoproxy/>
    <bean id="peach" class="com.cqliu.aop.Peach"/>
    <bean id="peachAspect" class="com.cqliu.aop.PeachAspect"/>
</beans>

输出

    public static void main(String[] args) {
        ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("aop-beans.xml");
        Peach peach = (Peach) applicationContext.getBean("peach");
        peach.grow();
    }

Peach around_start
Peach before...
peach grow...
Peach around_end
Peach after...
Peach afterReturn...