使用 Seata 彻底解决 Spring Cloud 中的分布式事务问题

@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)
@EnableDiscoveryClient
@EnableFeignClients
public class SeataOrderServiceApplication {

    public static void main(String[] args) {
        SpringApplication.run(SeataOrderServiceApplication.class, args);
    }

}

@Configuration
public class DataSourceProxyConfig {

    @Value("${mybatis.mapperLocations}")
    private String mapperLocations;

    @Bean
    @ConfigurationProperties(prefix = "spring.datasource")
    public DataSource druidDataSource(){
        return new DruidDataSource();
    }

    @Bean
    public DataSourceProxy dataSourceProxy(DataSource dataSource) {
        return new DataSourceProxy(dataSource);
    }

    @Bean
    public SqlSessionFactory sqlSessionFactoryBean(DataSourceProxy dataSourceProxy) throws Exception {
        SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();
        sqlSessionFactoryBean.setDataSource(dataSourceProxy);
        sqlSessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver()
                .getResources(mapperLocations));
        sqlSessionFactoryBean.setTransactionFactory(new SpringManagedTransactionFactory());
        return sqlSessionFactoryBean.getObject();
    }

}

@Service
public class OrderServiceImpl implements OrderService {

    private static final Logger LOGGER = LoggerFactory.getLogger(OrderServiceImpl.class);

    @Autowired
    private OrderDao orderDao;
    @Autowired
    private StorageService storageService;
    @Autowired
    private AccountService accountService;

    /**
     * 创建订单->调用库存服务扣减库存->调用账户服务扣减账户余额->修改订单状态
     */
    @Override
    @GlobalTransactional(name = "fsp-create-order",rollbackFor = Exception.class)
    public void create(Order order) {
        LOGGER.info("------->下单开始");
        //本应用创建订单
        orderDao.create(order);

        //远程调用库存服务扣减库存
        LOGGER.info("------->order-service中扣减库存开始");
        storageService.decrease(order.getProductId(),order.getCount());
        LOGGER.info("------->order-service中扣减库存结束:{}",order.getId());

        //远程调用账户服务扣减余额
        LOGGER.info("------->order-service中扣减余额开始");
        accountService.decrease(order.getUserId(),order.getMoney());
        LOGGER.info("------->order-service中扣减余额结束");

        //修改订单状态为已完成
        LOGGER.info("------->order-service中修改订单状态开始");
        orderDao.update(order.getUserId(),0);
        LOGGER.info("------->order-service中修改订单状态结束");

        LOGGER.info("------->下单结束");
    }
}

@Service
public class AccountServiceImpl implements AccountService {

    private static final Logger LOGGER = LoggerFactory.getLogger(AccountServiceImpl.class);
    @Autowired
    private AccountDao accountDao;

    /**
     * 扣减账户余额
     */
    @Override
    public void decrease(Long userId, BigDecimal money) {
        LOGGER.info("------->account-service中扣减账户余额开始");
        //模拟超时异常，全局事务回滚
        try {
            Thread.sleep(30*1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        accountDao.decrease(userId,money);
        LOGGER.info("------->account-service中扣减账户余额结束");
    }
}

@Service
public class OrderServiceImpl implements OrderService {

    /**
     * 创建订单->调用库存服务扣减库存->调用账户服务扣减账户余额->修改订单状态
     */
    @Override
//    @GlobalTransactional(name = "fsp-create-order",rollbackFor = Exception.class)
    public void create(Order order) {
        LOGGER.info("------->下单开始");
        //省略代码...
        LOGGER.info("------->下单结束");
    }
}