详解Java SpringAOP切面类

    public void receiveMoney(int receiveMoney) throws ReceiveMoneyException {
        System.out.println("[收钱]：参数为"+receiveMoney);
        System.out.println("[收钱]数据处理中。。。。");
        checkAmount(receiveMoney);
        System.out.println("[收钱]数据处理事务完成完成");
    }

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>org.example</groupId>
    <artifactId>Spring-AOP</artifactId>
    <version>1.0-SNAPSHOT</version>
    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>
    <dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>5.3.14</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-aspects</artifactId>
        <version>5.3.14</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>5.3.14</version>
    </dependency>

<!--在使用这个代码的时候，我用IDEA没有代码提示，并且写完会爆红色，直接同步即可，不-->
    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
        <version>1.9.7</version>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.13.2</version>
        <scope>test</scope>
    </dependency>
    </dependencies>
</project>

    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
        <version>1.9.7</version>
    </dependency>

<?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:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
    <aop:aspectj-autoproxy/>
    <context:component-scan base-package="com"/>
</beans>

@RunWith(SpringJUnit4ClassRunner.class)//这个需要spring-test依赖，使用后不需要创建IOC容器
@ContextConfiguration(value = "classpath:applicationContext.xml")
public class AOPTEST {
    @Autowired
    private Calc calc;
    @Test
    public void testAnnotationAOP(){
        int add=calc.add(10,0);
        System.out.println("外部 add"+add);
    }
}

@Aspect
@Component
public class LogAspect {
    //前置通知
    @Before(value = "execution(public int com.Calc.add(int ,int ))")
    public void printLogBefore(){
        System.out.println("[AOP前置通知]方法开始了");
    }
    //后置通知
    @AfterReturning(value = "execution(public int com.Calc.add(int ,int ))")
    //在返回通知中获取目标方法返回值分为两步，给returning设置一个名称，然后使用该名称在通知方法中声明一个对应的形参
    public void printLogAfterSuccess(){
        System.out.println("[AOP返回通知]方法成功返回了");
    }
    //异常通知
    @AfterThrowing(value ="execution(public int com.Calc.add(int ,int ))")
    public void printLogAfterException(){
        System.out.println("[AOP异常通知]方法抛出异常");
    }
    //结束通知
    @After("execution(public int com.Calc.add(int ,int ))")
    public void printLogFinish(){
        System.out.println("[AOP结束通知]方法结束了");
    }
}

    @Test
    public void testAnnotationAOP(){
        int add=calc.add(10,0);//调用
        System.out.println("外部 add"+add);
    }