Multipart/form-data does not support for request.getparamerter [duplicate]

Question

I have a form. it has file uploading part as well as several input Fields. i am using request.getParameter() to get values from the jsp into the servlet. But when i add encrypt=multipart, request.get parameter doesn't work. it returns null. i know multipart does not support for the request.getParameter(). Is there any solution for upload files. I want to use request.get parameter also.

Answer 1

Annotate your servlet with @MultipartConfig, then use the getParts() method to access the parts. You are using Servlet 3.0, right?

Answer 2

apache commons library will be useful for such requirement.

refer: http://javakart.blogspot.in/2012/11/file-upload-example-using-servlet.html http://www.tutorialspoint.com/servlets/servlets-file-uploading.htm

boolean isMultipart = ServletFileUpload.isMultipartContent(request); 
//this will help you identify request is of type multipart or not.

once you check, parse the request and get the form fields and File Item using library.

Example:

List<FileItem> items = new ServletFileUpload(new DiskFileItemFactory()).parseRequest(request);
        for (FileItem item : items) {
            if (item.isFormField()) {
                // Process regular form field (input type="text|radio|checkbox|etc", select, etc).
                String fieldname = item.getFieldName();
                String fieldvalue = item.getString();
                // ... (do your job here)
            } else {
                // Process form file field (input type="file").
                String fieldname = item.getFieldName();
                String filename = FilenameUtils.getName(item.getName());
                InputStream filecontent = item.getInputStream();
                // ... (do your job here)
            }
        }