使用mybatis-plus时候报错Error updating database. Cause: java.sql.SQLException: Field ‘subject_parent_id’ doesn’t have a default value

误代码如图:

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.SqlSessionTemplateSqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)atcom.sun.proxy.SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446) at com.sun.proxy.SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)atcom.sun.proxy.Proxy86.insert(Unknown Source)
at org.mybatis.spring.SqlSessionTemplate.insert(SqlSessionTemplate.java:278)
由于使用mybatis-plus代码生成器, 不能设置自增id, 所有不能用自增去解决

后来我发现把 ‘subject_parent_id’ 非空√去掉就好了

添加成功, 如图:

{
“success”: true,
“code”: 20000,
“message”: “成功”,
“data”: {
“courseId”: “string”
}
}

这样就成功了能够运行

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使用mybatis-plus时候报错Error updating database.subject_parent_id‘ doesn‘t have a default value