Spring AOP 的使用

一、创建一个meven webApp工程，并在pox.xml中导入依赖

  4.0.0

  string02
  string02
  1.0-SNAPSHOT
  war

  string02 Maven Webapp
  
  http://www.example.com

  
    UTF-8
    1.7
    1.7
    5.1.6.RELEASE
  

    
        
        
            org.springframework
            spring-webmvc
            5.3.14
        
        
            org.projectlombok
            lombok
            RELEASE
            compile
        
        
            org.springframework
            spring-core
            5.3.16
        
        
            org.springframework
            spring-aop
            5.3.16
        
        
            aopalliance
            aopalliance
            1.0
        
        
        
            org.springframework
            spring-webmvc
            5.2.0.RELEASE
        
        
            commons-logging
            commons-logging
            1.2
        
        
            org.aspectj
            aspectjweaver
            1.9.4
        
    

二、创建目标接口和实现类

UserDao:

package com.hxic.aop;

public interface UserDao {
    public void addUser();
    public void deleteUser();
}

UserDaoImpl:

package com.hxic.aop;

public class UserDaoImpl implements UserDao {
    @Override
    public void addUser() {
        //int i = 10 / 0;
        System.out.println("添加用户");
    }

    @Override
    public void deleteUser() {
        System.out.println("====用户管理模块：删除用户====");
    }
}

ScoreDao:

package com.hxic.aop;

public interface ScoreDao {
    public void addScore();
    public void deleteScore();
}

ScoreDaoImpl:

package com.hxic.aop;

public class ScoreDaoImpl implements ScoreDao {
    @Override
    public void addScore() {
        System.out.println("添加成绩");
    }

    @Override
    public void deleteScore() {
        System.out.println("====成绩管理模块：删除成绩====");
    }
}

StudentDao:

package com.hxic.aop;

public interface StudentDao {
    public void addStudent();
    public void deleteStudent();
}

StudentDaoImpl:

package com.hxic.aop;

public class StudentDaoImpl implements StudentDao {
    @Override
    public void addStudent() {
        //int i = 10 / 0;
        System.out.println("添加学生信息");
    }

    @Override
    public void deleteStudent() {

        System.out.println("====学生管理模块：删除学生信息====");
    }
}

三、创建切面类，

package com.springmvc.aop.xml.bean;

import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

public class MyAspect implements MethodInterceptor {
    @Override
    public Object invoke(MethodInvocation mi) throws Throwable {
        //执行目标方法
        Object obj = mi.proceed();
        log();
        return obj;
    }
    public void log(){
        System.out.println("记录日志......");
    }
}

四、更改spring配置文件

 五、编写测试类进行测试

package springmvc.aop.bean;

import com.hxic.service.UserService;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MyTest {
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
        UserService userService = context.getBean("userService", UserService.class);
        userService.add();
    }
}

测试成功：