SessionScoped Stateful Bean and clustering problem
Hi, i've created test applicaton for clustering. It's based on "Java EE Web Project" from JBoss developer studio's JBoss Central. My modifications of the project are:
new class in controller package:
import java.util.concurrent.atomic.AtomicInteger;
import javax.ejb.Stateful;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.jboss.annotation.ejb.Clustered;
@Clustered
@SessionScoped
@Stateful
@Named("bean")
public class ClusteredSessionBean {
//private int atribute = 2;
private AtomicInteger atribute = new AtomicInteger(2);
public void increase() {
//atribute++;
atribute.getAndIncrement();
}
public int getAtribute() {
return atribute.get();
}
}
web.xml in src/main/webapp/WEB-INF:
<?xml version="1.0" encoding="UTF-8"?> <web-app version="3.0" 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-app_3_0.xsd"> <!-- Clustering --> <distributable/> </web-app>
dependencies to pom.xml:
<dependency> <groupId>jboss</groupId> <artifactId>jboss-annotations-ejb3</artifactId> <version>4.2.2.GA</version> </dependency> <dependency> <groupId>jboss</groupId> <artifactId>jbossha</artifactId> <version>4.2.2.GA</version> </dependency>
index.xhtml:
<h:form>
<h:commandLink action="#{bean.increase}" value="Make it happen" />
</h:form>
<h:outputLabel value="#{bean.atribute}" />
I started 2 separate instances of jboss 7.1.1 with standalone-ha.xml config... (standalone.bat -c standalone-ha.xml and standalone.bat -c standalone-ha.xml -Djboss.socket.binding.port-offset=100 -Djboss.node.name=daenarys) WAR file is in standalone/deployments/clusterTest.war
problem is, when I open first instance (http://localhost:8080/clusterTest/index.jsf) it is working fine, but second instance ( http://localhost:8180/clusterTest/index.jsf) shows only ERROR 500 ServletException caused by NullPointerException from the bean...
Do you have any idea, how to set this up to work correctly?
Thanks
