创建mapper.xml
示例IndicatorMapper.xml:
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> select indicator_name as indicatorName from config.indicator where indicator_code = #{indicatorCode}
分析:
namespace为mapper.xml文件的路径
resultType为返回类型,当前示例中返回的类型为JavaBean
文件结构: