• 1. 上传文件名: private String mjfFileFileName | var up_file_name
• 2. 允许上传文件扩展名: Permitted upload file extensions
• 3. 上传并重命名文件: Upload and Rename File

更多释义

• 1.例如，我们可能会规定上传的大小限制或者可接受的文件类型，甚至我们可能会对文件名进行限制。
  For example, we might specify how large uploads can be or what types of files are acceptable, or we could even impose restrictions on file names.
  dict.yoduao.com
• 2.为此，需要添加代码来处理上传，解析文件名，以及创建与上述模式相匹配的目录路径。
  To do so, you need to add code to handle the upload, parse the file name, and create the directory paths to match the scheme above.
  dict.yoduao.com
• 3.如果您省略了目标文件名，那么curl将简单地重用上传文件的名称。
  If you omit the target file name, curl simply reuses the name of the file being uploaded.
  dict.yoduao.com

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