${if(len(id) > 0 && len(name) > 0,"","")
如果是参数是${class},${if( '${class}' == '1班' ,"","") 可行?
直接
${if( class== '1班' ,"","")}
https://help.fanruan.com/finereport/doc-view-2394.html?source=1
参考