使用mybatis-plus時候報錯Error updating database. Cause: java.sql.SQLException: Field 'subject_parent_id' doesn't have a default value

使用mybatis-plus添加課程時候報錯

如圖:

 

錯誤代碼如圖:

org.springframework.dao.DataIntegrityViolationException: 
### Error updating database.  Cause: java.sql.SQLException: Field 'subject_parent_id' doesn't have a default value
### The error may involve com.atguigu.eduservice.mapper.EduCourseMapper.insert-Inline
### The error occurred while setting parameters
### SQL: INSERT INTO edu_course  ( id, teacher_id, subject_id,  title, price, lesson_num, cover,      gmt_create, gmt_modified )  VALUES  ( ?, ?, ?,  ?, ?, ?, ?,      ?, ? )
### Cause: java.sql.SQLException: Field 'subject_parent_id' doesn't have a default value
; Field 'subject_parent_id' doesn't have a default value; nested exception is java.sql.SQLException: Field 'subject_parent_id' doesn't have a default value
    at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:247)
    at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72)
    at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73)
    at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)
    at com.sun.proxy.$Proxy86.insert(Unknown Source)
    at org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:278)

由於使用mybatis-plus代碼生成器, 不能設置自增id, 所有不能用自增去解決

后來我發現把 'subject_parent_id' 非空√去掉就好了

 

添加成功, 如圖:

 

 

數據庫中添加了兩條信息(課程描述信息-表), 如圖:

並且與課程中的id值是一樣的(課程基本信息-表), 所有沒有問題

 

 

 課程基本信息表與課程描述信息表中的id值相同, 這樣添加課程基本信息的接口就完成了