JSF Primefaces pass parameter to fileupload - jsf

Question

JSF 2.2 - Primefaces 4.0 - JBoss Wildfly
Hi, I am trying to pass a parameter value to the file upload handler.
I tried a few suggestions I found, but can't get it to work.
I stepped a few steps back
I need the #{fileUploadController.newItemId} in the controller
When going to the file update page it is done with i.e. this URL
/fileUpload.jsf?newItemId=10
I tried what it mentioned in
How to send parameter to fileUploadListener in PrimeFaces fileUpload
and
Passing value to the backing bean with PrimeFaces file upload
fileUpload.xhtml
<f:metadata>
<f:viewParam name="newItemId"
value="#{fileUploadController.newItemId}" />
<f:viewAction action="#{fileUploadController.loadData()}" />
</f:metadata>
<h:form id="item" enctype="multipart/form-data">
<p:messages id="messages" />
<p:panelGrid styleClass="panelGridCenter">
<p:row>
<p:column>
<p:fileUpload
fileUploadListener="#{fileUploadController.handleFileUpload}"
validator="#{fileUploadController.validateFile}" mode="advanced"
dragDropSupport="false" update="messages" sizeLimit="1000000"
fileLimit="100" allowTypes="/(\.|\/)(gif|jpe?g|png)$/">
</p:fileUpload>
</p:column>
</p:row>
</p:panelGrid>
</h:form>
FileUploadController.java
public void handleFileUpload(FileUploadEvent event) {
try {
// Need item id here :)
UploadedFile file = event.getFile();
InputStream inputStream = file.getInputstream();
FileOutputStream outputStream = new FileOutputStream(file.getFileName());
byte[] buffer = new byte[4096];
int bytesRead = 0;
while (true) {
bytesRead = inputStream.read(buffer);
if (bytesRead > 0) {
outputStream.write(buffer, 0, bytesRead);
} else {
break;
}
}
outputStream.close();
inputStream.close();
Long imageId = serviceSLSB.saveImage(itemId, file, buffer);
FacesMessage msg = new FacesMessage("Succesful", event.getFile().getFileName() + " is uploaded and saved with id." + imageId);
FacesContext.getCurrentInstance().addMessage(null, msg);
} catch (Exception e) {
String errorMessage = getRootErrorMessage(e);
FacesMessage m = new FacesMessage(FacesMessage.SEVERITY_ERROR, errorMessage, "Saving unsuccessful");
facesContext.addMessage(null, m);
}
}
public void loadData() {
if (newItemId == null) {
String message = "Bad request. Please use a link from within the system.";
FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_ERROR, message, null));
return;
} else {
String message = "Your are adding images to item with id : " + newItemId;
FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_INFO, message, null));
return;
}
}

Answer 1

I just found that my controller was only request scoped, after changing it to
#ViewScoped
#Named
public class FileUploadController implements Serializable
I of cause still have the item id, and can now add images to that item.
Thanks for the comments guys