ACTIONSCRIPT 3 Developer’s Guide en

ACTIONSCRIPT 3.0 DEVELOPER’S GUIDE
HTTP communications
var variables:URLVariables = new URLVariables("name=Franklin");
var request:URLRequest = new URLRequest();
request.url = "http://www.[yourdomain].com/greeting.cfm";
request.method = URLRequestMethod.POST;
request.data = variables;
var loader:URLLoader = new URLLoader();
loader.dataFormat = URLLoaderDataFormat.VARIABLES;
loader.addEventListener(Event.COMPLETE, completeHandler);
try
{
loader.load(request);
}
catch (error:Error)
{
trace("Unable to load URL");
}
function completeHandler(event:Event):void
{
trace(event.target.data.welcomeMessage);
}
The following code contains the contents of the Adobe ColdFusion® greeting.cfm document used in the previous
example:
welcomeMessage=#UrlEncodedFormat("Welcome, " & Form.name)#
Web service requests
Flash Player 9 and later, Adobe AIR 1.0 and later
There are a variety of HTTP-based web services. The main types include:
REST
XML-RPC
SOAP
To use a web service in ActionScript 3, you create a URLRequest object, construct the web service call using either URL
variables or an XML document, and send the call to the service using a URLLoader object. The Flex framework
contains several classes that make it easier to use web services—especially useful when accessing complex SOAP
services. Starting with Flash Professional CS3, you can use the Flex classes in applications developed with Flash
Professional as well as in applications developed in Flash Builder.
In HTML-based AIR applications, you can use either the URLRequest and URLLoader classes or the JavaScript
XMLHttpRequest class. If desired, you can also create a SWF library that exposes the web service components of the
Flex framework to your JavaScript code.
Last updated 6/6/2012
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