本文在SpringBoot2之整合Mybatis的基础上进行
7.1、整合事务7.1.1、mapper接口
int deleteEmployeeById(int id);
7.1.2、mapper映射文件
delete from t_emp where emp_id = #{id}
7.1.3、业务层接口及实现类
package online.liaojy.service;/** * @author liaojy * @date 2023/12/25 - 6:31 */public interface EmployeeService { int deleteEmployeeById(int id);}
注意:只要引入 spring-boot-starter-jdbc 启动器(详见6.1节),spring boot 便会自动配置好 DataSourceTransactionManager ;
因此,只需在方法(或者类)加上 @Transactional 注解,即可进行事务管理。
package online.liaojy.service.impl;import online.liaojy.mapper.EmployeeMapper;import online.liaojy.service.EmployeeService;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import org.springframework.transaction.annotation.Transactional;/** * @author liaojy * @date 2023/12/25 - 6:33 */@Servicepublic class EmployeeServiceImpl implements EmployeeService { @Autowired private EmployeeMapper employeeMapper; @Transactional @Override public int deleteEmployeeById(int id) { // 删除一条数据 int rowsOfDelete = employeeMapper.deleteEmployeeById(id); System.out.println("已成功删除"+rowsOfDelete+"行数据"); // 制造一个异常 int i = 1/0; return rowsOfDelete; }}
7.1.4、控制层方法
@Autowired private EmployeeService employeeService; @RequestMapping("/deleteEmployeeById") public String deleteEmployeeById(){ int i = employeeService.deleteEmployeeById(26); return "删除成功"; }
7.1.5、测试效果
测试前的数据
测试时发生异常
测试后的数据没变化,说明事务回滚功能正常
7.2、整合AOP7.2.1、导入AOP启动器依赖
org.springframework.boot spring-boot-starter-aop
7.2.2、创建切面类
package online.liaojy.advice;import org.aspectj.lang.JoinPoint;import org.aspectj.lang.annotation.Aspect;import org.aspectj.lang.annotation.Before;import org.springframework.core.annotation.Order;import org.springframework.stereotype.Component;/** * @author liaojy * @date 2023/12/25 - 6:51 */@Component@Aspect@Order(5)public class LogAdvice { @Before("execution(* online.liaojy.service.*.*.*(..))") public void beforeLog(JoinPoint joinPoint){ // 获取连接点所对应目标方法所在类的名称 String className = joinPoint.getSignature().getClass().getSimpleName(); // 获取连接点所对应目标方法的名称 String methodName = joinPoint.getSignature().getName(); System.out.println(className+"类的"+methodName+"方法开始执行了!"); }}
7.2.3、测试效果
本文来自博客园,作者:Javaer1995,转载请注明原文链接:https://www.cnblogs.com/Javaer1995/p/17925694.html