一起学习Spring Boot 2.X | 第六篇：Mybatis Druid 数据库(XML)

运行展示

步骤

1.在resources下新建文件夹mapper/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.springboot.dao.UserDao">
    <select id="queryUser" resultType="User">
        select * from user
    </select>
</mapper>

注：id和方法名相同，dao层和mapping名必须相同

2.application.properties

#配置Mybatis的扫描路径(注解形式需开启以下两个)/typeAliasesPackage：dao层路径/mapperLocations：mapper位置(resources下)
#mybatis.typeAliasesPackage=com.springboot.dao
#mybatis.mapperLocations=classpath:mapper/*.xml