目录

1，【基于注解】

1.1，基本结构

1.2，实现步骤

2，【基于XML】

2.1，基本结构

2.2，实现步骤

1，【基于注解】

1.1，基本结构

        编写UserService，提供 insertUser 和 updateUser

        编写切面类，对两个方法进行事务管理（开始事务、结束事务）

        ​​​​​​​        

1.2，实现步骤

目标类

package com.czxy.demo16_aop_interface.service.impl;
import com.czxy.demo16_aop_interface.service.UserService;
import org.springframework.stereotype.Service;
@Service
public class UserServiceImpl implements UserService {
@Override
public String insertUser() {
System.out.println("添加");
return "Hello";
}
@Override
public String updateUser() {
System.out.println("更新");
return "World";
}
}

 配置类

package com.czxy.demo16_aop_interface.config;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.EnableAspectJAutoProxy;
@Configuration
@ComponentScan({"com.czxy.demo16_aop_interface.service","com.czxy.demo16_aop_interface.aop"})
@EnableAspectJAutoProxy //开启AOP
public class Demo16Configuration {
}

测试类

package com.czxy.demo16_aop_interface;
import com.czxy.demo16_aop_interface.config.Demo16Configuration;
import com.czxy.demo16_aop_interface.service.UserService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;
import javax.annotation.Resource;
@RunWith(SpringRunner.class)
@ContextConfiguration(classes = Demo16Configuration.class)
public class TestDemo16 {
@Resource
private UserService userService;
@Test
public void test16(){
userService.insertUser();
userService.updateUser();
}
}

切面类

package com.czxy.demo16_aop_interface.aop;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.stereotype.Component;
@Component
@Aspect
public class MyAspect {
//抽取切入点表达式
@Pointcut("execution(* com.czxy.demo16_aop_interface..*.*(..))")
private void myPointuct(){}
@Before(value = "myPointuct()")
public void start(){
System.out.println("前置通知");
}
@After("myPointuct()")
public void myAfter(JoinPoint joinPoint){
System.out.println("最终通知");
}
}

2，【基于XML】

2.1，基本结构

2.2，实现步骤

 步骤1：UserService接口：

package com.czxy.demo21_xml_aop.service;
public interface UserService {
Integer insertUser();
String updateUser();
}

步骤2：UserServiceImpl实现类

package com.czxy.demo21_xml_aop.service.impl;
import com.czxy.demo21_xml_aop.service.UserService;
public class UserServiceImpl implements UserService {
@Override
public Integer insertUser() {
System.out.println("Demo21 添加");
return 1;
}
@Override
public String updateUser() {
System.out.println("Demo21 更新");
return "更新结果";
}
}

步骤3：MyAspect 切面类

package com.czxy.demo21_xml_aop.aop;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
public class MyAspect {
public void myBeforeAdvice(){
System.out.println("开启事务");
}
public void myAfterReturningAdvice(JoinPoint joinPoint,Object obj){
System.out.println("目标类："+joinPoint.getTarget());
System.out.println("方法名："+joinPoint.getSignature().getName());
System.out.println("返回值："+obj);
System.out.println("提交事务");
}
public Object myAroundAdvice(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {
System.out.println("环绕前");
//执行目标
Object proceed = proceedingJoinPoint.proceed();
System.out.println("环绕后");
return proceed;
}
public void myAfterThrowingAdvice(Throwable e) {
System.out.println("异常通知：" + e.getMessage());
}
public void myAfterAdvice() {
System.out.println("释放资源");
}
}

步骤4：测试类

package com.czxy.demo21_xml_aop;
import com.czxy.demo21_xml_aop.service.UserService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;
import javax.annotation.Resource;
@RunWith(SpringRunner.class)
@ContextConfiguration(locatiOns= "classpath:demo21.xml")
public class TestDemo21 {
@Resource(name = "UserService12")
private UserService userService;
@Test
public void TestDemo21(){
userService.insertUser();
System.out.println("-----------");
userService.updateUser();
}
}

xml配置文件


xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:cOntext="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.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
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">