[Springframework-developer] Re: REPOST: Portlet Multipart Support

[John L. <jl...@ar...>]

Yujin,

Good to hear from you again!  Sorry I missed your post the first time.

Multisupport is on my list of things to round out the portlet 
framework.  Jeff Tan-Ang has reportedly already done a prototype of the 
integration and should be sending me something shortly.  I should be 
able to integrate it fairly soon after I get it from him.  If you 
already have something working, you could send it to me as well.

In the meantime, we already do a simple file upload task in one of our 
portlets using commons-fileupload-1.1.dev directly.  It is a 
SimpleFormController -- here is a simplified version of our 
onSubmitAction method where all the file processing takes place:

    protected void onSubmitAction(ActionRequest request,
            ActionResponse response, Object command, BindException errors)
            throws ServletException, IOException {

        PortletRequestContext prc = new PortletRequestContext(request);
        boolean isMultiPart = FileUpload.isMultipartContent(prc);

        if (isMultiPart) {

            DiskFileItemFactory factory = new DiskFileItemFactory();
            factory.setSizeThreshold(getMaxFileSize());
                PortletFileUpload upload = new PortletFileUpload(factory);
                           try {
                List fileItems = upload.parseRequest(request);
                for (Iterator i = fileItems.iterator(); i.hasNext();) {
                    FileItem fileItem = (FileItem) i.next();
                    if (!"".equals(fileItem.getName()) && 
fileItem.getSize() > 0 ) {
                        byte array[] = new byte[(int)fileItem.getSize()];
                        fileItem.getInputStream().read(array);
                        // do something here to save the array and 
possibly fileItem.getContentType()
                    }
                }
            } catch (Exception e) {
                // process any relevant exceptions
            }

        } else {
            // no file submitted
        }
    }

I hope that helps.  Stay tuned...

John



Yujin Kim wrote:

>Hello spring developers,
>
>A few weeks ago I posted a question regarding multipart support in
>Portlet MVC and received no response so I am trying again.
>
>The current version of Portlet MVC code doesn't support
>multipart/file-uploading.  Looking at how MultipartResolver works in
>Servlet MVC, it appears it's not too insane to port it over to Portlet
>MVC but there seems to be a couple of issues.
>
>1. The package structure in the current set up is very much servlet
>centric which is understandable given that portlet api was release
>much later.  But it would still be nice to be able to organize the
>package structure so portlet and servlet mvc can have a parallel
>structure much like the mvc codes.
>
>2. Also commons-fileupload needs to be updated to 1.1-dev which
>includes PortletFileItem which might affect the servlet multipart
>support somewhat due to possible api changes.
>
>I would be more than happy to tackle this and submit a patch for this
>but I am hoping if you can comment on the above points or some
>pointers on how I should structure the packages if package refactoring
>is not a feasible approach (of course I am suggesting this for 1.3,
>the version portlet support was promised.)
>
>Many thanks
>
>Yujin
>
>  
>