java - mybatis 插入数据到oracle，id无法用selectkey获取到数据

Question

如图，所示，id判断是不是null的时候，竟然认为id=null,结果sql语句就变成
INSERT INTO core_tzt_product ( product_name, product_type, product_price, crasr_code, period_days, buy_type, start_date, end_date ) values ( ?, ?, ?, ?, ?, ?, ?, ? ) ，
但是如果我把id判断是不是null的if去掉，则可以新增成功。代码如下

，有点搞不清楚，这是mybatis的bug吗，还是我哪里有弄错

Answer 1

SelectKey needs to pay attention to the order attribute. In databases like MySQL that support automatic growth, order needs to be set to after to get the correct value.