CODEWITHSUNDEEP
jsf-2primefacesprimepush
Sandeep Goud Karrey
Sandeep Goud Karrey

Reputation: 253

PrimePush counter implementation

I am trying to implement prime push counter in my project. I am using PrimeFaces3.5, Jboss7.0 and Eclipse Indigo version.

I have added jars related to prime push:

  1. atmosphere-annotations-1.0.1.jar
  2. atmosphere-compat-jbossweb-1.0.1.jar
  3. atmosphere-compat-tomcat-1.0.1.jar
  4. atmosphere-compat-tomcat7-1.0.1.jar
  5. atmosphere-runtime-1.0.1.jar
  6. primefaces-3.5.jar and jsf and slf4j jars

My xhtml code:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html"
    xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:p="http://primefaces.org/ui">
<h:head></h:head>
<h:body>
    <h:form id="form">
        <h:outputText id="out" value="#{pushBean.count}" />
        <p:commandButton value="Click" actionListener="#{pushBean.increment}" />
    </h:form>
    <p:socket onMessage="handleMessage" channel="/counter" />
    <script type="text/javascript">
         function handleMessage(data) {
           $('.display').html(data);
         }
    </script>
</h:body>
</html>

My managed bean:

@ManagedBean(name = "pushBean")
@ApplicationScoped
public class PushBean {

    public PushBean() {
    }

    private int count;

    public int getCount() {
        return this.count;
    }

    public void setCount(final int count) {
        this.count = count;
    }

    public synchronized void increment() {
        this.count++;
        PushContext pushContext = PushContextFactory.getDefault().getPushContext();
        pushContext.push("/counter", String.valueOf(this.count));
    }

}

When I click the button in UI, the count is incremented on the server, but it is not reflected in UI automatically, because it is not updated. But when I refresh the page, the count is incremented as expected.

Exception I am getting is:

13:00:02,298 ERROR [stderr] (http--0.0.0.0-8080-5) [http--0.0.0.0-8080-5] ERROR org.atmosphere.cpr.AtmosphereFramework - AtmosphereFramework exception

13:00:02,298 ERROR [stderr] (http--0.0.0.0-8080-5) java.lang.IllegalStateException: The servlet or filters that are being used by this request do not support async operation

Upvotes: 2

Views: 2576

Answers (2)

Rong Nguyen
Rong Nguyen

Reputation: 4189

This exception happens when your web app is run in Servlet 3 compliant containers. The correct web.xml must have the async-supported element set to true, for example: 

    <servlet> 
        <servlet-name>Push Servlet</servlet-name> 
        <servlet-class>org.primefaces.push.PushServlet</servlet-class> 
        <async-supported>true</async-supported> 
    </servlet>

Reference: Installing Atmosphere

Upvotes: 2

satya
satya

Reputation: 164

I'm not very sure about push framework but i think the problem is with your javascript. you are trying to refresh ".display" control but there is nothing like .display.

Try '.out' instead of .display

Upvotes: 0

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