SpringBoot事务的简单运用

素颜马尾好姑娘i 2023-09-30 11:49 38阅读 0赞

超赞的文章  
[参考文章1：https://blog.csdn.net/qq\_34337272/article/details/80394121][1_https_blog.csdn.net_qq_34337272_article_details_80394121]  
[参考文章2：https://www.cnblogs.com/jinjian91/p/10549125.html][2_https_www.cnblogs.com_jinjian91_p_10549125.html]  
[参考文章3：https://blog.csdn.net/justry\_deng/article/details/80828180][3_https_blog.csdn.net_justry_deng_article_details_80828180]

**通用配置**  
添加下面依赖,sprongboot 会默认开启事务管理

<dependency>
    	<groupId>org.springframework.boot</groupId>
    	<artifactId>spring-boot-starter-jdbc</artifactId>
    </dependency>

或在启动类添加

@EnableTransactionManagement

开启事务  
![在这里插入图片描述][watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA5Luj56CB5Yyq5b6S_size_20_color_FFFFFF_t_70_g_se_x_16]  
**一、声明式事务**  
使用事务：

@Transaction
    public void test(String userName){
        
        //...
    }

捕获到异常将自动进行回滚，其只能捕获到运行时异常

spring事务失效的几种场景[https://blog.csdn.net/Jiangbohao\_/article/details/107182301][https_blog.csdn.net_Jiangbohao_article_details_107182301]

@Transactional 注解参数详解[https://blog.csdn.net/weixin\_44259720/article/details/110138972][https_blog.csdn.net_weixin_44259720_article_details_110138972]

**二、编程式事务**  
使用事务：  
在需要的服务类里添加：

//事务使用的接口
        @Resource
        DataSourceTransactionManager dataSourceTransactionManager;
        @Resource
        TransactionDefinition transactionDefinition;

//手动开启事务！
    TransactionStatus transactionStatus = dataSourceTransactionManager.getTransaction(transactionDefinition);
    
    //事务回滚
    //最好是放在catch 里面,防止程序异常而事务一直卡在哪里未提交
    dataSourceTransactionManager.rollback(transactionStatus);
    //提交事务
    dataSourceTransactionManager.commit(transactionStatus);

伪代码仅供参考：

@Service
    public class OrderMainService {
        
    
        //事务使用的接口
        @Resource
        DataSourceTransactionManager dataSourceTransactionManager;
        @Resource
        TransactionDefinition transactionDefinition;
    
    
        @Resource
        OrderGoodsMapper orderGoodsMapper;
        @Resource
        UserCartMapper userCartMapper;
        @Resource
        GoodsInfoMapper goodsInfoMapper;
        @Resource
        private OrderMainMapper orderMainMapper;
    
        public CommonResult<Integer> addOrder(OrderData orderData) {
        
    
            //手动开启事务！
            TransactionStatus transactionStatus = dataSourceTransactionManager.getTransaction(transactionDefinition);
    
            //遍历，判断商品库存是否充足
            for (OrderGoods orderGoods : orderData.getOrderGoodsList()) {
        
                //订购数量
                int goodsCount;
                //查询商品信息
                GoodsInfo goodsInfo;
                //判断物品库存是否充足
                if (goodsInfo.getGoodsRemainCount() - goodsCount >= 0) {
        
                    //更新商品库存信息
                    goodsInfo.setGoodsRemainCount(goodsInfo.getGoodsRemainCount() - goodsCount);
                    goodsInfoMapper.editGoods(goodsInfo);
                } else {
        
                    //事务回滚
                    dataSourceTransactionManager.rollback(transactionStatus);
                    //订单中只要有一项商品库存不足就取消订单
                    return new CommonResult<>("商品库存不足", null);
                }
            }
    
            //订单中所有商品库存都足够则更新数据库中商品信息
            //提交事务
            dataSourceTransactionManager.commit(transactionStatus);
    
            //...
            Integer influence = new Integer(1);
            return new CommonResult<>("success",influence);
        }
    }

[1_https_blog.csdn.net_qq_34337272_article_details_80394121]: https://blog.csdn.net/qq_34337272/article/details/80394121
[2_https_www.cnblogs.com_jinjian91_p_10549125.html]: https://www.cnblogs.com/jinjian91/p/10549125.html
[3_https_blog.csdn.net_justry_deng_article_details_80828180]: https://blog.csdn.net/justry_deng/article/details/80828180
[watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBA5Luj56CB5Yyq5b6S_size_20_color_FFFFFF_t_70_g_se_x_16]: https://img-blog.csdnimg.cn/fb7a8daa9fc442aeae2a211968be75fd.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBA5Luj56CB5Yyq5b6S,size_20,color_FFFFFF,t_70,g_se,x_16
[https_blog.csdn.net_Jiangbohao_article_details_107182301]: https://blog.csdn.net/Jiangbohao_/article/details/107182301
[https_blog.csdn.net_weixin_44259720_article_details_110138972]: https://blog.csdn.net/weixin_44259720/article/details/110138972