use id = main.jsp can see the list of files used only in exchanges, used to make...

代码说明：

使用main.jsp?id=就可以看到文件列表 仅做交流使用，用做商业用途，请保留此说明。 文件管理可以更改，删除文件，修改文件内容，修改文件名。-use id = main.jsp can see the list of files used only in exchanges, used to make commercial use, please retain this note. Document management can change, and delete files, modify the contents of the documents, modify the file.