Liferay Upload : UploadPortletRequest empty - upload

Question

I am having an issue getting multiple file from an upload using the UploadPortletRequest.
I can see in my ActionRequest that the files are here: using debug i see that actionRequest.multipartFiles.[0].fileItem.tempFile give me the location of the first uploaded file.
Though, in order to get the multipartParameterMap I need to convert the ActionRequest in UploadPortletRequest. when I do :
UploadPortletRequest uploadRequest = PortalUtil.getUploadPortletRequest(actionRequest);
My uploadRequest.getSize("fileName")) returns 0...
Do you know what could be the cause?
Do you have another solution to get the temp uploaded files from the ActionRequest ?
Here is the .jsp I use :
<portlet:actionURL var="fileUploadURL">
<portlet:param name="formAction" value="fileUpload" />
</portlet:actionURL>
<form:form name="fileUploader" commandName="springFileVO"
method="post" action="${fileUploadURL}" enctype="multipart/form-data">
<label> Select a File</label>
<input type="file" name="uploadedFile" multiple="multiple">
<input type="submit" value="<liferay-ui:message key="upload" />" onClick="<%= uploadProgressId %>.startProgress(); return true;"/>
</form:form>
<liferay-ui:upload-progress id="<%= uploadProgressId %>" message="uploading" redirect="<%= HtmlUtil.escape(fileUploadURL) %>" />
Here is the Controller :
#ActionMapping(params="formAction=fileUpload")
public void fileUpload(ActionRequest request, ActionResponse response){
UploadPortletRequest uploadPortletRequest = PortalUtil.getUploadPortletRequest(request);
System.out.println("Size: "+uploadPortletRequest.getSize("uploadedFile"));
[...] }
Thank you for your help!

Answer 1

I think you're missing portlet:namespace attribute.
<input type="file" name="<portlet:namespace/>uploadedFile" multiple="multiple">
As your uploading multiple files, you can use following.
UploadPortletRequest uploadPortletRequest = PortalUtil.getUploadPortletRequest(request);
File[] files = uploadPortletRequest.getFiles("uploadedFile");
for (File file : files) {
System.out.println("Size: "+ file.length());
}