PrimeFaces Upload file not uploading - upload

Question

I am using PrimeFaces 3 and trying to upload a file but when I debug the file is always null.
Below you can see my code. Can anyone spot what is the issue?
<h:form enctype="multipart/form-data">
<p:fileUpload value="#{uploadFileMB.file}" mode="simple" />
<p:commandButton value="Submit" ajax="false" action="#{uploadFileMB.submit()}"/>
<h:outputLabel value="#{uploadFileMB.text}" />
</h:form>
import javax.enterprise.context.SessionScoped;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
import org.primefaces.model.UploadedFile;
#ManagedBean
#SessionScoped
public class UploadFileMB {
UploadedFile file;
String text;
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public UploadedFile getFile() {
return file;
}
public void setFile(UploadedFile file) {
this.file = file;
}
public void submit(){
System.out.println("Trial "+file);
UploadedFile a=file;
if(file==null)
text="not uploaded";
else
text=file.getFileName()+" uploaded";
}
/** Creates a new instance of UploadFileMB */
public UploadFileMB() {
}
}
<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>
And the filter in both web.xml and faces.config
I have tried a number of suggestions and debugged it many times but I can't figure it out.
This is my faces-config:
<?xml version='1.0' encoding='UTF-8'?>
<!-- =========== FULL CONFIGURATION FILE ================================== -->
<faces-config version="2.0"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd"
>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId> commons-fileupload</artifactId>
<version>1.2.2</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId> commons-io</artifactId>
<version>2.1</version>
</dependency>
<lifecycle>
<phase-listener>security.SecurityFilter</phase-listener>
</lifecycle>
<filter>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
<init-param>
<param-name>uploadDirectory</param-name>
<param-value>C:/home/vanessa/Desktop</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<servlet-name>Faces Servlet</servlet-name>
</filter-mapping>
</faces-config>

Answer 1

I think these two libraries are missing in your project ; commons-fileupload and commons-io . if your project is maven you can add these to your pom.xml ;
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId> commons-fileupload</artifactId>
<version>1.2.1</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId> commons-io</artifactId>
<version>2.1</version>
</dependency>
else then download them from http://commons.apache.org and add your lib .

Answer 2

Well, I see three mistakes in your code, it could solve your problem I don't guarantee anything.
First, you are importing #SessionScope from wrong package, it should be javax.faces.bean.SessionScoped, the other class is ment to use with CDI.
Second, make your properties in bean private I am not sure if it counts as a property like this. Also this is a good practise to hiding field as much as possible.
Third, and most important, change actionto actionListenerand try it. If still doesn't work, try to add to your method parameter ActionEvent event (and be carefull to choose right package, I once imported ActionEventfrom javax.awt. and spend two hours figuring out where could be the problem:-)