Aborting upload from a servlet to limit file size

Question

I\'d like to limit the size of the file that can be uploaded to an application. To achieve this, I\'d like to abort the upload process from the server side when the size of

Answer 1

You might try doing this in the doPost() method of your servlet

multi = new MultipartRequest(request, dirName, FILE_SIZE_LIMIT); 

if(submitButton.equals(multi.getParameter("Submit")))
{
    out.println("Files:");
    Enumeration files = multi.getFileNames();
    while (files.hasMoreElements()) {
    String name = (String)files.nextElement();
    String filename = multi.getFilesystemName(name);
    String type = multi.getContentType(name);
    File f = multi.getFile(name);
    if (f.length() > FILE_SIZE_LIMIT)
    {
        //show error message or
        //return;
        return;
    }
}

This way you don't have to wait to completely process your HttpRequest and can return or show an error message back to the client side. HTH