因为dedecms系统标签sql语句的原因,导航菜单标签不输出外部链接栏目,如果需要显示外部链接,5.7可以找include/taglib/channelartlist.lib.php第67行左右去掉红色代码:


$tpsql = " reid=0 
AND ispart<>2 
AND ishidden<>1 AND channeltype>0 ";


改成:


$tpsql = " reid=0 AND ishidden<>1 AND channeltype>0 ";

搞定!!