How to access request content using MultipartMessage Object

Question

I want to take a file from the Client and upload it as a FileInputStream on the server.
I have a simple form as follows:
<form action="scan" name="scan_files" method="post"
enctype="multipart/form-data">
<input type="file" name="file1">
<input type="file" name"file2"/>
<input type="Submit" name="insert_scaned" value="Upload"/>
</form>
In my servlet I tried to use the com.sap.engine.services.servlets_jsp.lib.multipart.MultipartMessage
class to parse the form information.
protected void doPost(
HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
MultipartMessage multipartMsg =
(MultipartMessage)request.getAttribute("com.sap.servlet.multipart.body");     
if (multipartMsg != null) {
     multipartMsg.addFormParametersToRequest();
The help said that once this is done the form information should be accessible via the
request getParameter() method. However, I can't seem to get it working?
How can I access the file so that I can parse it into a FileInputStream?
Thanks.

Answer 1

Hi Mat,
first, welcome on SDN!
About your question:
From the APIDoc - https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/javadocs/nw04/sp12/j2ee%20engine/com/sap/engine/services/servlets_jsp/lib/multipart/multipartmessage.html - I would expect this as a solution:
MultipartMessage multipartMsg = (MultipartMessage)request.getAttribute(MultipartMessage.MULTIPART_BODY_KEY);
if (multipartMsg != null) {
  for (int i = 0; i < multipartMsg.getCount(); i++) {
    MultiPart mp = multipartMsg.getBodyPart(i);
    // mp.getInputStream, mp.getBody() or whatever you need
Hope it helps
Detlev
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