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mybatis的resultType和resultMap
- resultType
2.1 输出简单类型
<select id="findCntByName" parameterType="java.lang.String"
resultType="int">
select count(*) from business_apply where name = #{value}
</select>
2.2 输出pojo类型
<select id="findIdByBa" parameterType="com.cmhy.model.BusinessApply"
resultType="com.cmhy.model.BusinessApply">
select * from business_apply where city = #{address.city}
</select>
2.3 输出pojo列表:与 输出pojo类型区别是mapper.java的输出参数是list
<select id="findIdByBa" parameterType="com.cmhy.model.BusinessApply"
resultType="com.cmhy.model.BusinessApply">
select * from business_apply where city = #{address.city}
</select>