JavaFX with JBoss Seam

Mar 12 2009

This is an introductory post that shows how to use JavaFX with JBoss Seam. Communication between JavaFX and server (Seam) is done via Flamingo RIA framework. Flamingo, not only provides Flex to server communications like Granite DS and Blaze DS, but also provides JavaFX to server communications.

JavaFX:

package com.exadel.flamingo.javafx;


import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.text.Text;
import javafx.scene.text.Font;
import javafx.scene.layout.HBox;
import javafx.scene.paint.Color;
import javafx.scene.text.TextOrigin;
import javafx.ext.swing.SwingButton;
import javafx.scene.layout.VBox;
import javafx.scene.control.TextBox;

import com.exadel.flamingo.javafx.samples.helloworld.javafx.HelloworldClient;

class Hello {
    public var name:String;
    public var str:String;
}
var helloModel = new Hello();

HelloworldClient.setServerUrl(FX.getArgument('uri') as java.lang.String);

var helloText: TextBox = TextBox {
    text: bind helloModel.name with inverse
    columns: 7
    selectOnFocus:true
}

var helloLabel = Text{
    y:8
    font: Font { name:"sansserif", size: 12 }
    fill: Color.BLACK
    content: bind "Server says: {helloModel.str}"
    textOrigin: TextOrigin.TOP
}

var helloButton = SwingButton  {
    text:"Say Hello!"
    action: function(){
        helloModel.str = HelloworldClient.CLIENT.hello(helloModel.name);
    }
}

Stage {
    title: "Helloworld Sample"
    width: 200
    height: 150
    scene: Scene {
        content: VBox {
            translateX: 5
            translateY: 5
            spacing: 10
            content: [
                HBox {
                    content: helloText
                    spacing: 10
                },
                HBox {
                    content: helloButton
                    spacing: 10
            	},
                HBox {
                    content: helloLabel
                    spacing: 10
            }]

        }
    }
}

HelloAction interface:

package com.exadel.flamingo.javafx.samples;

import org.jboss.seam.annotations.remoting.WebRemote;

public interface IHelloAction {

    @WebRemote
    public String hello(String name);
}

HelloAction (Seam component):

package com.exadel.flamingo.javafx.samples;

import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.annotations.remoting.WebRemote;

@Scope(ScopeType.STATELESS)
@Name("helloAction")
public class HelloAction implements IHelloAction {

    @WebRemote
    public String hello(String name) {
        return "Hello, " + name;
    }
}

Helloworld client:

package com.exadel.flamingo.javafx.samples.javafx;

import com.caucho.hessian.client.HessianProxyFactory;
import com.exadel.flamingo.javafx.samples.IHelloAction;
import java.net.MalformedURLException;

public class HelloworldClient {

    public static HelloworldClient CLIENT;
    private IHelloAction _service;
    private String _url;

    private HelloworldClient(String string) {
        _url = string;
    }
    public static void setServerUrl(String url) {
        CLIENT = new HelloworldClient(url);
    }
    private IHelloAction getService() {
        if (_service == null) {
            try {
                HessianProxyFactory factory = new HessianProxyFactory();
                _service = (IHelloAction) factory.create(IHelloAction.class, _url);
            } catch (MalformedURLException ex) {
                System.out.println(ex);
            }
        }
        return _service;
    }
    public String hello(String s) {
        return getService().hello(s);
    }
}

JSP file:






Helloworld


JavaFX with Seam!
	
	
	    javafx(
	        {
	              archive: "jnlp/helloworld-client-javafx.jar",
	              draggable: true,
	              width: 600,
	              height: 560,
	              code: "com.exadel.flamingo.javafx.MainFrame",
	              name: "Helloworld",
		      	uri:''
	        }
	    );

4 Comments

vlaugier says:

April 20, 2009 at 11:45 am

very interesting,

I am close from making it work either with Hessian 1 or 2

but I seems I am missing something about the protocol handshake between the client and the server :

On the client side :

HessianProxyFactory factory = new HessianProxyFactory();
// the following 3 lines are uncommented if we use Hessian2
//factory.setHessian2Reply(true);
//factory.setHessian2Request(true);
//factory.setDebug(true);
_service = (IHelloAction) factory.create(IHelloAction.class, _url);

On the server side :

public interface IHelloAction {

@WebRemote
public String hello(String name);
}

@Scope(ScopeType.STATELESS)
@Name(“helloAction”)
public class HelloAction implements IHelloAction {

@WebRemote
public String hello(String name) {
return “Hello, ” name;
}
}

If I use hessian-3.2.1.jar
(in both client
and server side) I get the following error on the server side :

19:43:27,331 ERROR [ContextualHttpServletRequest] ended request due to
exception
com.caucho.hessian.io.HessianProtocolException: expected string at 0x6d
at com.caucho.hessian.io.Hessian2Input.error(Hessian2Input.java:2714)
at com.caucho.hessian.io.Hessian2Input.expect(Hessian2Input.java:2695)
at
com.caucho.hessian.io.Hessian2Input.readString(Hessian2Input.java:1322)
at
com.caucho.hessian.io.Hessian2Input.readMethod(Hessian2Input.java:267)
at
com.exadel.flamingo.service.seam.util.HessianSeamMethodInvoker.makeCall(HessianSeamMethodInvoker.java:64)
at
com.exadel.flamingo.service.seam.HessianToSeamRequestProcessor$HessianSeamContextualInvoker.invoke(HessianToSeamRequestProcessor.java:238)
at
com.exadel.flamingo.service.seam.HessianToSeamRequestProcessor$HessianSeamContextualInvoker.process(HessianToSeamRequestProcessor.java:214)
at
org.jboss.seam.servlet.ContextualHttpServletRequest.run(ContextualHttpServletRequest.java:53)
at
com.exadel.flamingo.service.seam.HessianToSeamRequestProcessor$HessianSeamContextualInvoker.runMethod(HessianToSeamRequestProcessor.java:251)
at
com.exadel.flamingo.service.seam.HessianToSeamRequestProcessor.process(HessianToSeamRequestProcessor.java:134)
at
com.exadel.flamingo.service.seam.HessianRemoteService.getResource(HessianRemoteService.java:74)
at
org.jboss.seam.servlet.SeamResourceServlet.doGet(SeamResourceServlet.java:75)
at
org.jboss.seam.servlet.SeamResourceServlet.doPost(SeamResourceServlet.java:92)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:85)
at
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
at
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
at
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
at org.jboss.seam.web.Ajax4jsfFilter.doFilter(Ajax4jsfFilter.java:60)
at
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:58)
at
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at
org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68)
at
org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:173)
at
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:182)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
at
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at
org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)

If I use hessian-3.1.6.jar
or
hessian-3.1.3.jar
(in both client and server side) there is no error on the server side
BUT I get the following error on the client side :

Exception in thread “AWT-EventQueue-0”
com.caucho.hessian.client.HessianRuntimeException:
com.caucho.hessian.io.HessianProtocolException: expected string at 0x48
at
com.caucho.hessian.client.HessianProxy.invoke(HessianProxy.java:232)
at $Proxy13.hello(Unknown Source)
at
com.exadel.flamingo.javafx.samples.javafx.HelloworldClient.hello(HelloworldClient.java:36)
at com.exadel.flamingo.javafx.Hello$2.lambda(Hello.fx:41)
at com.exadel.flamingo.javafx.Hello$2.lambda(Hello.fx:41)
at com.exadel.flamingo.javafx.Hello$2.invoke(Hello.fx:40)
at com.exadel.flamingo.javafx.Hello$2.invoke(Hello.fx:40)
at com.exadel.flamingo.javafx.Hello$2.invoke(Hello.fx:40)
at com.exadel.flamingo.javafx.Hello$2.invoke(Hello.fx:40)
at
javafx.ext.swing.SwingAbstractButton$1ActionListener$anon13.actionPerformed(SwingAbstractButton.fx:150)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown
Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown
Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at
javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown
Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown
Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: com.caucho.hessian.io.HessianProtocolException: expected
string at 0x48
at
com.caucho.hessian.io.Hessian2Input.error(Hessian2Input.java:2705)
at
com.caucho.hessian.io.Hessian2Input.expect(Hessian2Input.java:2686)
at
com.caucho.hessian.io.Hessian2Input.readString(Hessian2Input.java:1403)
at
com.caucho.hessian.io.BasicDeserializer.readObject(BasicDeserializer.java:181)
at
com.caucho.hessian.io.Hessian2Input.readObject(Hessian2Input.java:1753)
at
com.caucho.hessian.client.HessianProxy.invoke(HessianProxy.java:220)
… 31 more

Have we forgotten something on the client side or the server side ?

regards

vincent

Reply
max says:

April 22, 2009 at 12:57 pm

Vincent – your comment ended up in spam, I only saw it today, had to approve it manually. Are you still facing this problem?

Reply
Wilman says:

June 7, 2010 at 7:30 am

Hi,

I have the same problem and have not found a way around this, I take time on this bug, any ideas

Reply
max says:

June 7, 2010 at 5:16 pm

@Wilman: please repost your question in Flamingo forum: http://exadel.org/forum/flamingo

Reply

JavaFX with Seam!

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