Getting the name of an uploaded file

Question

Hi!
I'm uploading a file to a JSP with a HTML form that encodes the request as "multipart/form-data".
At present, a file input is sent to this JSP which handles the file:
<%@ page language="java" contentType="text/html" import="java.io.*" %>
<%@ page import="javax.servlet.*" %>
<%
     String contentType= request.getContentType();
     int boundaryIndex = contentType.indexOf("boundary=");
     String boundary = contentType.substring(boundaryIndex+9);
     int boundaryStrLength = boundary.length();
     ServletInputStream servIn = request.getInputStream();
     DataInputStream in = new DataInputStream(servIn);
     String line;
     while((line = in.readLine()) != null)
          getServletContext().log("Got a line: "+line);     
          if(line.trim().length() == 0) break;
     ByteArrayOutputStream byteOut= new ByteArrayOutputStream( request.getContentLength());
     byte[] buffer = new byte[4096];
     int len;
     while((len = in.read(buffer)) > 0)
          byteOut.write(buffer,0,len);
     byte[] outBytes = byteOut.toByteArray();
     File outputFile = new File(session.getAttribute("currentFolder") + "\\newFile");
     outputFile.createNewFile();
     FileOutputStream fileOut = new FileOutputStream(outputFile);
     fileOut.write(outBytes, 0, outBytes.length - boundaryStrLength - 8);
     fileOut.close();
     response.sendRedirect(response.encodeURL("manageFilesIndex.jsp"));
%>
     As you can see, the file is saved as 'newFile' in a certain folder.
How can I change my code so that the file is saved under the name that the user originally called it?
Thanks!
Alastair

Answer 1

the length() method of java.io.File class should return the file size in bytes.