org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.executor.ExecutorException: Error getting generated key or setting result to parameter object. Cause: org.apache.ibatis.executor.ExecutorException: Too many keys are generated. There are only 1 target objects. You either ...
1、selectKey和useGeneratedKeys属性 useGeneratedKeys (insert and update only) This tells MyBatis to use the JDBC getGeneratedKeys method to retrieve keys generated internally by the database (e.g.auto increment fields in RDBMS like MySQL or SQL Server). Default: false (( 仅对 insert 和update有 用...
Mybatis support dynamic Sql but need to write lots of xml files, which cost lots of time.By using MybatisGenerator xml files can be generated but they are unmaintainable and it's annoying to have so many xml in Project JdbcTemplate do lots of low level job for you, so you can only ...
Mybatis support dynamic Sql but need to write lots of xml files, which cost lots of time.By using MybatisGenerator xml files can be generated but they are unmaintainable and it's annoying to have so many xml in Project JdbcTemplate do lots of low level job for you, so you can only ...