How to change the webservice URL through flashvars

I am using a webservice deployed on SAP Web Application Server to create some charts. While migrating my FLEX application from dev to QA, I also wish to change the address of my target webservices in flex, so that they access webservices from QA. What I did was add the target server address as a URL parameter and add these URL parameters as flashvars in Flex.

var wsdlUrl= window.location.search.substring(1);

flashvars.serverUrl = 开发者_如何学运维wsdlUrl;

Now I try to access the flashvars during declaration of the webservice

<fx:Declarations>
<cscustomreportservice:CSCustomReportService 
id="cSCustomReportService" useProxy="false" wsdl="{FlexGlobals.topLevelApplication.parameters.serverUrl}" 
fault="Alert.show(event.fault.faultString + '\n' + event.fault.faultDetail)" showBusyCursor="true"/>
...
</fx:Declarations>

But the flashvars are somehow not accessible during the declaration time.

Is there any way I can pass the server URL during runtime so that the URL need not be hardcoded in the Flex application in anyway?

Best regards, Nakul

Just go to <your application path>\src\services

Inside the services folder, there would be a folder with the service name. Inside this folder, there would be 2 files, among them, open the the one whose name starts with '_' (underscore).

Inside this file, you can modify the link/URL.

You can achieve this by using a Custom Config.xml file under the src folder. In you application's main.mxml have a static var that is accessible across your application.

public static var endpointUrl:String;

Make a HTTPService call to the config.xml

<mx:HTTPService id="configSrv"
                url="config.xml"
                resultFormat="e4x"
                result="configResultHandler(event)"/>

The result Handler will set the value from config.xml to the endPointUrl

//For calling the webservice uri end point
        private function configResultHandler(event:ResultEvent):String
        {
            var xml:XML=event.result as XML;
            var endPointURL:String="" + xml..channel.(@id == "endpoint").@endpoint;
            if (endPointURL == "")
            {
                Alert.show("End Point not configured", "Error");
                return null;
            }
            Security.allowDomain(endPointURL);
            return endPointURL;
        }

Now in your tag you can invoke the static variable like this

<cscustomreportservice:CSCustomReportService id="cSCustomReportService" useProxy="false" wsdl="{Main.endPointURL}" fault="Alert.show(event.fault.faultString + '\n' + event.fault.faultDetail)" showBusyCursor="true"/>

Sample config.xml for your reference:

 <channels>
    <channel id="endpoint"
             endpoint="http://localhost:8080/myApp/"/>
</channels>