Flex AS3 call a Java Webservice

Flex AS3 call a Java Webservice

Introduction

Webservice is a standard in soa architecture.

Flex is a leading tecnology for client side so let's see how actionscript 3(the flex programming language) can call a java(jax-ws) webservice.

Starting Point

The main step are:

1. Make a WebProject with a Webservice
2. Make a MXML in flex side and code the call

The webservice:

Two click with netbeans header and you can obtain this code:

package webservice;

import javax.jws.WebMethod;

import javax.jws.WebParam;

import javax.jws.WebService;

@WebService()

public class testWS 

{

    @WebMethod(operationName = "sayHello")

    public String sayHello(@WebParam(name = "name")

    String name)

    {        

        return "hello " + name;

    }

}

The Action Script Side inside mxml:

<?xml version="1.0" encoding="utf-8"?>

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" click="useWebService()">

<mx:Script>

<![CDATA[

import mx.rpc.events.FaultEvent;

import mx.rpc.events.ResultEvent;

import mx.rpc.soap.WebService;

public function useWebService():void

{

var ws:WebService = new WebService();

 

ws.addEventListener(ResultEvent.RESULT,onResult);

ws.addEventListener(FaultEvent.FAULT,onFault);  

 

ws.loadWSDL("http://yourserver/ws/testWSService?wsdl");

ws.sayHello("pippo");

}

private function onResult(event:ResultEvent):void

{

 trace("result " + event.result);

}

private function onFault(fault:FaultEvent):void

{

 trace("fault " + fault);

}

]]>

</mx:Script>

</mx:Application>

To see the result debug the flex application and see at console only after deploy the webservice.

Conclusion

There are different way to call a webservice, see at: http://blogs.4point.com/brad.white/2008/12/4-ways-to-invoke-a-webservice-in-flex-with-mxml-and-actionscript.html

This is the runtime version.