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springboot-database's Introduction

如果使用 jpa 建表,mapper.insert 主键生成规则不遵循 jpa 设置的主键生成规则

不建议在 mybatis-plus 中使用 jpa,没必要,mybatis 的 insert 主键规则不遵循 jpa 设置

jpa 中使用 mybatis-plus,只建议将 mybatis 用在 jpa 不方便的查询上,增删改还是使用 jpa

@AutoMapper:能用但极其难用,经常扫描不到,报错,还会导致项目起不来,不建议用

@TableId(type = IdType.INPUT)

AUTO:数据库默认自增策略

NONE:不设置 id 生成策略

INPUT:用户手工输入 id,如果 id 为 null 会报错

ASSIGN_ID:雪花算法生成 id(可兼容数值型与字符串型),mp 默认 id 策略

ASSIGN_UUID:UUID 作为 id 生成策略

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