freemarker split字符串分割 遍历map

 <#list "张三三,李思思,,王强,柳树,诸葛正我"?split(",") as name>
         "${name}"
     </#list>

     <#list "AhuAjiuAjkdsfAoionAjiuiAnujkkdfAkoijAmcjdhfjdfaAdhnfjdhfA"?split("A") as num>
         "${num}"
     </#list>

<#list stringMap.keySet() as strKey>
        　<#list stringMap[strKey] as system>
              ${system}
          </#list>
    </#list>