打开ueditor.all.js
将 iconDir = URL + (URL.substr(URL.length - 1) == ‘/‘ ? ‘‘:‘/‘) + ‘dialogs/attachment/fileTypeImages/‘;
更改为：iconDir = ‘/include/ueditor/dialogs/attachment/fileTypeImages/‘;
路径要根据ueditor实际所在目录进行更改
dedecms更换ueditor后上传附件将附件图标生成缩略图问题
原文：https://www.cnblogs.com/surplus/p/13191647.html