11.1、环境搭建

创建名为spring_aop_annotation的新module，过程参考9.1节

11.1.1、配置打包方式和依赖

注意：AOP需要在IOC的基础上实现，因此需要导入IOC的依赖

<?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.rain</groupId>
    <artifactId>spring_aop_annotation</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <dependencies>
        <!-- Spring-IOC的依赖 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.3.1</version>
        </dependency>

        <!-- spring-AOP的依赖 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>5.3.1</version>
        </dependency>

        <!-- junit测试 -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

</project>

11.1.2、创建Calculator接口及实现类

package org.rain.spring.aop.annotation;

/**
 * @author liaojy
 * @date 2023/8/12 - 17:43
 */
public interface Calculator {

    int add(int i, int j);
    int sub(int i, int j);
    int mul(int i, int j);
    int div(int i, int j);

}

package org.rain.spring.aop.annotation;

import org.springframework.stereotype.Component;

/**
 * @author liaojy
 * @date 2023/8/12 - 17:45
 */

// @Component注解保证这个目标类能够放入IOC容器
@Component
public class CalculatorImpl implements Calculator {
    public int add(int i, int j) {

        int result = i + j;
        System.out.println("方法内部 result = " + result);
        return result;

    }

    public int sub(int i, int j) {

        int result = i - j;
        System.out.println("方法内部 result = " + result);
        return result;

    }

    public int mul(int i, int j) {

        int result = i * j;
        System.out.println("方法内部 result = " + result);
        return result;

    }

    public int div(int i, int j) {

        int result = i / j;
        System.out.println("方法内部 result = " + result);
        return result;

    }
}

11.1.3、创建切面类LoggerAspect

package org.rain.spring.aop.annotation;

import org.aspectj.lang.annotation.Aspect;
import org.springframework.stereotype.Component;

/**
 * @author liaojy
 * @date 2023/8/12 - 17:56
 */

// @Aspect表示这个类是一个切面类
@Aspect
// @Component注解保证这个切面类能够放入IOC容器
@Component
public class LoggerAspect {
}

11.1.4、创建spring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.xs