使用spring boot打造文件文档在线预览项目解决方案，支持doc、docx、ppt、pptx、wps、xls、xlsx、zip、rar、ofd、xmind、bpmn 、eml 、epub、3ds、dwg、psd 、mp4、mp3以及众多类文本类型文件在线预览
this is a tool,qrcode and time format
北辰·静仁
网络爬虫- 抓取各个网站每日的材料的价格，一个线程一个任务，速度极快。 ps: 有些资源网站不是很好， 有时会打不开， 报错
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