Spring @Transactional cause synchronized invalid

@Transactional cause synchronized invalid

springboot version 2.1.7.release My code is `public interface GoodsMapper {

@Update(" update goods set stock = stock-1 where id= #{id} ") int reduceStock(@Param("id") Integer id);

@Select(" select * from goods where id= #{id} ") Goods getGoodsById(@Param("id") Integer id); }

public interface OrderMapper {

@Options(useGeneratedKeys = true,keyProperty = "id",keyColumn = "id") @Insert(" insert into order(user_id) values(#{userId}) ") int addOrder(Order order);

}

@Component public class GoodsService { @Autowired GoodsMapper goodsMapper;

@Autowired
OrderMapper orderMapper;

 @Transactional
 public void  reductStock(Integer id) throws Exception {
      synchronized (this){
          Goods goods = goodsMapper.getGoodsById(id);
          if (goods.getStock()>0){
              goodsMapper.reduceStock(id);
              Order order = new Order();
              order.setUserId(UUID.randomUUID().toString());
              orderMapper.addOrder(order);
          }else{
              throw new RuntimeException(" 库存不足");
          }
      }
 }

}

Controller

@GetMapping("/stock/reduce")
public Object reduceStock(Integer id) throws Exception {
        goodsService.reductStock(id);
  return "ok";

}

`

Comment From: snicoll

Sorry but I didn't get what you mean to report. If you want support, please move all that code in text into a small app that we can run ourselves. You can attach a zip to this issue or push the code to a separate GitHub repository.

Comment From: spring-projects-issues

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Comment From: spring-projects-issues

Closing due to lack of requested feedback. If you would like us to look at this issue, please provide the requested information and we will re-open the issue.