Making a RESTful Web Service call!

Another name for HTTP Service is REST style web service. To make a successful web service call we gotta take care of steps as below. Similar steps apply for HTTP Object instantiated via HTTP service tag.

1) Instantiate the HTTPService Object.
var httpService: HTTPService = new HTTPService();

2) Set the URL
httpService.url = "serviceURL"; //Mention the service URL

3) Set the method type [GET/POST/PUT/DELETE], default is GET
httpService.method = HTTPService.POST;

4) Set the resultFormat to XML [for true REST], default is Object

httpService.resultFormat = "xml"; //Values possible are object, xml, e4x, text, array, flashvars

5) Add result and fault event listeners

httpService.addEventListener("result", httpResultHandler);
httpService.addEventListener("fault", httpFaultHandler);

6) Construct the parameters to be passed if any, default is null. For example if
your service expects two parameters "userID" & "userName", the values of which you wanna pass as userIDValue and userNameValue, construct an object:

var serviceParameters: Object = {};
serviceParameters["userID"] = userIDValue;
serviceParameters["userName"] = userNameValue;

7) Make the call
httpService.send(serviceParameters);

Bingo! Have Fun! :)