出现这种问题,首先需要检查自己的代码;
要么代码小错误;或者逻辑错误;
如果出现循环调用更要仔细检查;
我的问题:
循环调用:一个实体他有自己的父栏目,含有子栏目的list集合;两者结果映射resultMap都调用自身;导致无限循环调用;
错误代码:
<resultMap id="newsLabelMap" type="newsLabel">
<id property="id" column="id"/>
<result property="name" column="label_name"/>
<result property="content" column="label_content"/>
<association
property="parent"
javaType="NewsLabel"
select="selectNewsLabelByChild"
column="pid"
/>
<collection
property="child"
ofType="NewsLabel"
select="selectNewsLabelByParent"
column="id"
javaType="ArrayList"/>
<select id="selectNewsLabelByChild" resultMap="newsLabelMap">
select * from newlabel where id=#{pid}
</select>
<select id="selectNewsLabelByParent" resultMap="newsLabelMap">
select * from newlabel where pid=#{id}
</select>