<li class="<#if (position.flag)! ==‘haha1‘>hide<#else >show</#if>"><a href=" ">按钮name</a></li>
<li class="<#if (position.flag)! ==‘haha1‘>hide</#if>"><a href=" ">按钮name</a></li>
freemarker逻辑判断写法#if
原文：https://www.cnblogs.com/hahajava/p/9135119.html
