Get filename from Content-Disposition [closed]

问题:

I'm uploading a blob file from HTML form to MySQL database using JSP. I need to insert the filename into DB. I know that the filename is stored in the Content-Disposition header, how could I get that? Thanks in advance!

回答1:

If you uploaded the file using JavaEE 6 with HttpServletRequest.getPart:

Part part = request.getPart("xxx"); // input type=file name=xxx
String disposition = part.getHeader("Content-Disposition");
String fileName = disposition.replaceFirst("(?i)^.*filename=\"?([^\"]+)\"?.*$", "$1");

See Part.

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As @Marc mentioned I did not treat URL encoding. (He also made the quotes around the filename optional.)

fileName = URLDecoder.decode(fileName, StandardCharsets.ISO_8859_1);

Not checked, but HTTP encoding for headers should be the default ISO-8859-1.