MP教程-配置

Posted 2020-11-27 deepminer

配置

一、Mybatis原生配置

• application.properties

mybatis-plus.config-location=classpath:mybatis.xml

 

• mybatis.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
  PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
  "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
</configuration>

 

 

二、使用Mybatis的原生Mapper配置

• application.properties

  mybatis-plus.mapper-locations=classpath*:mybatis/*.xml

   

  ?

• UserMapper.xml

  <?xml version="1.0" encoding="UTF-8" ?>
  <!DOCTYPE mapper
    PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
    "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
  <mapper namespace="com.will.learn.springboot.mapper.UserMapper">
    <select id="selById" resultType="com.will.learn.springboot.pojo.User">
      select * from tb_user where id = #{id}
    </select>
  </mapper>

   

三、进阶配置

• MyBatis别名包扫名路径配置

mybatis-plus.type-aliases-package = com.will.learn.springboot.pojo

 

• DB策略配置（IdType）

mybatis-plus.global-config.db-config.id-type=auto

 

• DB策略配置（tablePrefix）

mybatis-plus.global-config.db-config.table-prefix=tb_