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  • org.apache.ibatis.builder.IncompleteElementException: Could not find result map com.abc.beans.Minister

    使用mybatis进行一对多嵌套查询时出错,错误原因:

        <select id="findMinisterById" resultMap="com.abc.beans.Minister">
          select mid,mname from minister where countryId = #{cid}
        </select>
        <resultMap id="AndSelectCountry" type="com.abc.beans.Country">
            <id property="id" column="cid"/>
            <result property="name" column="cname"/>
            <collection property="minister"
                        column="cid"
                        ofType="com.abc.beans.Minister"
                        select="findMinisterById">
            </collection>
        </resultMap>
        <select id="findById" resultMap="AndSelectCountry">
            select cid,cname from country where cid = #{id}
        </select>
    </mapper>

    java.lang.IllegalArgumentException: Result Maps collection does not contain value for xxxx.xxx
    解决办法:
    1.检查mybatis的xml配置
    2.在某处肯定有配错了的,如"resultMap" -->“resultType”

    像我这样的因为findMinisterById查询时,返回的是com.abc.beans.Minister类型,此时如果该实体类和对应的表属性值一致,就要把这个标红的resuitMap改为resultType

    与其战胜敌人一万次,不如战胜自己一次。
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  • 原文地址:https://www.cnblogs.com/hyjh/p/11985150.html
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