p:fileUpload not working (file is null) - file-upload

Question

I cannot make the fileUpload option working. I keep having the message file is null.
Could you tell me how to fix this ?
here is my xhtml:
<h:form enctype="multipart/form-data">
<p:fileUpload mode="simple" id="recupereFile" value="#{FileUploadView.uploadedFile}" />
<p:commandButton value="Upload" action="#{FileUploadView.upload}" ajax="false" />
</h:form>
here is my java:
#ManagedBean(name="FileUploadView")
public class FileUploadView {
private UploadedFile file;
public UploadedFile getFile() {
System.out.println(file);
return file;
}
public void setFile(UploadedFile file) {
this.file = file;
}
public void upload() {
UploadedFile file = getFile();
System.out.println("hello");
System.out.println(file);
if(file != null) {
FacesMessage message = new FacesMessage("Succesful", file.getFileName() + " is uploaded.");
FacesContext.getCurrentInstance().addMessage(null, message);
System.out.println(message);
}
}
}
file is always null !
my web.xml
<filter>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<filter-class>
org.primefaces.webapp.filter.FileUploadFilter
</filter-class>
</filter>
<filter-mapping>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<servlet-name>Faces Servlet</servlet-name>
</filter-mapping>
I have these jars:
commons-fileupload-1.3.1.jar
commons-io_2.5.jar
Thansk for your help.

Answer 1

We had a similar issue a few month ago here. The colleague who did this left our company, so I can't ask him. Anyway this is how the relevant parts of my web.xml look like.
<filter>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<url-pattern>*.jsf</url-pattern>
</filter-mapping>
Also we have this context-param:
<context-param>
<param-name>primefaces.UPLOADER</param-name>
<param-value>auto</param-value>
</context-param>

Answer 2

The value attribute of p:fileUpload should correspond to the name of the UploadedFile in the bean.
It should work if you replace FileUploadView.uploadedFile with FileUploadView.file in the p:fileUpload:
<p:fileUpload mode="simple" id="recupereFile" value="#{FileUploadView.file}" />