org.apache.ibatis.binding.BindingException: Mapper method ‘cn.Mapper.findCouponIdListByFacadeid attempted to return null from a method with a primitive return type (int). select 语句应该返回一个int字段，但是返回了一个空的结果集，所以代码就报错了，修正方法修改sql语句保证任何时候都返回一个int☞ifnull(sum(字段),0) as 字段 sum函数保证了肯定有一行记录，但是可能是nullifnull再进一步转换一个默认值或异常值
Daily Archives: 2019-03-21
attempted to return null from a method with a primitive return type (int)
2019-03-21 by Jinyang | No Comments | Filed in UncategorizedChaohai.com Bid History(15 Bidders:, 72 Bids)
2019-03-21 by Jinyang | No Comments | Filed in UncategorizedBidder Bid Date Time first1High Bid $3,001.00 Mar 20 13:02:42 jackiesjkP $3,000.00 Mar 20 13:02:42 jackiesjkP $2,951.00 Mar 20 12:58:43 first1 $2,901.00 Mar 20 12:58:43 jackiesjkP $2,851.00 Mar 20 12:57:40 first1 $2,801.00 Mar 20 12:57:40 jackiesjkP $2,751.00 Mar 20 12:57:06 first1 $2,701.00 Mar 20 12:57:06 jackiesjkP $2,651.00 Mar 20 12:56:02 first1 $2,601.00 Mar 20 12:56:02 […]
