Minidao & FreeMarker 条件判断

5、jeecg 笔记之 minidao 条件判断 - niceyoo - 博客园
https://www.cnblogs.com/niceyoo/p/9966303.html

if, else, elseif - Apache FreeMarker Manual
https://freemarker.apache.org/docs/ref_directive_if.html