struts2 json plugin includeProperties 包含MAP属性

<action name="dl" class="com.dqgb.action.document.DocumentAction" method="getDocumentList">
   <result type="json">
    <param name="includeProperties">^documentss\[\d+\]\.attachGroup\.attachs.*</param>
   </result>
</action>

其中attachs为Set集合