mybatis-plus的: @TableField 注解

实体类和数据库表的字段映射

   在使用Mybatis-Plus的时候, 虽然可以逆向工程创建实体类,在使用时,通常会配置生成的实体类中的小横杠字段会变成java中的驼峰式的风格,

所以在使用时,查询时候是实体类中的字段名称和表中的字段名称是不一致的这时候需要需要在实体类对应的字段上添加注解 @TableField 相互映射. 不然会报错.

例如:

这时候使用访问接口查询数据库.会报错

{ "timestamp": "2022-06-17 22:42:46", "status": 500, "error": "Internal Server Error", "message": "\r\n### Error querying database. Cause: java.sql.SQLSyntaxErrorException: Unknown column 'isDeleted' in 'field list'\r\n### The error may exist in com/isaiah/eduservice/mapper/EduTeacherMapper.java (best guess)\r\n### The error may involve defaultParameterMap\r\n### The error occurred while setting parameters\r\n### SQL: SELECT id,name,intro,career,level,avatar,sort,isDeleted,gmtCreate,gmtModified FROM edu_teacher WHERE isDeleted=0\r\n### Cause: java.sql.SQLSyntaxErrorException: Unknown column 'isDeleted' in 'field list'\n; bad SQL grammar []; nested exception is java.sql.SQLSyntaxErrorException: Unknown column 'isDeleted' in 'field list'", "path": "/eduservice/teacher/findAll" }

 加上注解,让字段映射起来.

查询成功

标签：TableField,实体类,java,Unknown,plus,###,error,mybatis,isDeleted
来源： https://www.cnblogs.com/Isaiah2018/p/16387323.html