Caused by: java.lang.IllegalArgumentException: Modifying queries can only use void or int/Integer as return type!2022-09-13 14:01:38Caused by: java.lang.IllegalArgumentException: Modifying queries can only use void or int/Integer as return type!上一篇：Caused by: java.lang.IllegalArgumentException: Parameter Maps collection does not contain value for com.bj186.crm.mapper.UserMapper.Integer下一篇：Mybatis学习笔记（三） 之Dao开发