MyBatis的javaType和ofType的区别 同时 一对一 一对多

 

 ofType是值映射到list集合中的类型，比如上面的children。当collection进行list集合映射是需要用ofType，也就是一对多的时候使用

<resultMap id="ResourceResultMap" type="com.iflytek.permission.data.model.Resource">
    <result column="ENGLISH_NAME" property="englishName" />
    <result column="PARENT_ID" property="parentId" />
    <result column="LINK" property="link" />
    <result column="IS_ABSOLUTE" property="isAbsolute" />
    <result column="RESOUCE_TYPE" property="resourceType" />
    <result column="IS_LEAF" property="isLeaf" />
    <result column="IS_OPEN" property="isOpen" />
    <result column="ORDER_VALUE" property="orderValue" />
    <result column="IS_DISPLAY" property="isDisplay" />

    <result column="CREATE_DATE" jdbcType="TIMESTAMP" property="createDate" javaType="java.util.Date" />
    <result column="MODIFY_DATE" jdbcType="TIMESTAMP" property="modifyDate" javaType="java.util.Date" />

    <association property="systemInfo"
        column="SYSTEM_INFO_ID" 
        javaType="com.iflytek.permission.data.model.SystemInfo" 
        select="com.iflytek.permission.perm.mapper.SystemInfoMapper.findById"/>
</resultMap>

<resultMap id="ResourceDTO" type="com.iflytek.permission.data.dto.ResourceDTO">
    <id column="ID" property="id" />
    <result column="NAME" property="name" />
    <result column="HIERARCHY" property="hierarchy" />
    <result column="PARENT_ID" property="pId" />
    <collection property="actions" 
        column="id"
        ofType="com.iflytek.permission.data.dto.ActionDTO" 
        select="com.iflytek.permission.perm.mapper.ActionMapper.findDTOByResource">
    </collection>
</resultMap>