problem in file upload

From:
Pradyut <pradyutb@gmail.com>
Newsgroups:
comp.lang.java.programmer
Date:
Wed, 14 Jan 2009 15:32:38 -0800 (PST)
Message-ID:
<de04ab37-ed8e-41fc-89f2-ccc7c75c6eec@v18g2000pro.googlegroups.com>
Hi
i m using the commons file upload with jsp...(http://
commons.apache.org/fileupload/)

My form is : -
------------------------------------------------------------------------------------------------------------------------------------------------------------------------
<form name=uploadForm action="../UploadServlet" method=post
enctype="multipart/form-data">
            <input type="text" name="nameee" value="" />
            <input type="file" name="fileUpload" value="" width="20" /

            <input type="submit" value="submit" name="Upload" />
        </form>
------------------------------------------------------------------------------------------------------------------------------------------------------------------------
I m able to retrieve the details using this code...
------------------------------------------------------------------------------------------------------------------------------------------------------------------------
try
        {

            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet Upload</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet Upload at " +
request.getContextPath () + "</h1>");
            boolean isMultipart = ServletFileUpload.isMultipartContent
(request);
            if(isMultipart)
            {
            ServletFileUpload upload = new ServletFileUpload();
            /*List items = upload.parseRequest(request);
            Iterator iter = items.iterator();

            int count = 0;*/
            FileItemIterator iter = upload.getItemIterator(request);
            while (iter.hasNext())
            {
                //count++;
                FileItemStream item = iter.next();
                String name = item.getFieldName();
                InputStream stream = item.openStream();

                if (item.isFormField()) {
                    out.println("Form field " + name + " with value "
+ Streams.asString(stream) + " detected.");
                }
                else
                {
                    out.println("File field " + name + " with file
name " + item.getName() + " detected.");
        // Process the input stream
                }
            }
            out.println("</body>");
            out.println("</html>");
            }
        }
        catch(FileUploadException fue) {
            out.print(fue);
        }

            finally
            {
            out.close();
        }
------------------------------------------------------------------------------------------------------------------------------------------------------------------------
How do i use the "item" object in the else part(not a form field)

 to point to a FileItem(org.apache.commons.fileupload.FileItem)

or particularly how do i use to store it to a database blob???

If i use another code for retrieving into FileItem i m getting
exceptions........
DeferredFileOutputStream (probably at the line List /* FileItem */
items = upload.parseRequest(request);)

The code is

------------------------------------------------------------------------------------------------------------------------------------------------------------------------
try {

            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet UploadServlet</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet UploadServlet at " +
request.getContextPath () + "</h1>");

                out.print("<br> This is a test a<br>");

                FileItemFactory factory = new DiskFileItemFactory();
                ServletFileUpload upload = new ServletFileUpload
(factory);

                 List /* FileItem */ items = upload.parseRequest
(request);
                 Iterator iter = items.iterator();
                 while (iter.hasNext())
                 {
                    FileItem item = (FileItem) iter.next();
                    out.print("<br> This is a test a<br>");
                 }
            out.println("</body>");
            out.println("</html>");

        }
        catch(FileUploadException fue) {
            out.print(fue);
        }
        catch(ClassCastException cce) {
            out.print(cce);
        }
        catch(NullPointerException npe) {
            out.print(npe);
        }
        catch(Exception e) {
            out.print(e);
        }
        finally {
            out.close();
        }

------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Thanks
Pradyut
http://pradyut.tk
India

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