Auto login using Flex

1

Hi frnds,

I have a login form in HTML which accepts few parameters and on pressing login automatically navigates to another page.

I have to make it autologin so I just set document.form.submit() and it works.


<html>
<head>
</head>
<body onLoad="document.forms['loginForm'].submit();">
<form id="loginForm" action="Login.do" method="POST">
<table>
    <tr>
        <td>
            User ID
        </td>
        <td>
            <input type="text" name="username" value="ABCD"/>
        </td>
    </tr>
    <tr>
        <td>
            ISBN
        </td>
        <td>
            <input type="text" name="isbn" value="11122433"/>
        </td>
    </tr>
    <tr>
        <td>
            ROLE
        </td>
        <td>
            <select name="userRole">
                <option>TEACHER</option>
              </select>
        </td>
    </tr>
    <tr>
        <td colspan="2">
            <input type="submit" value="Login" />
        </td>
    </tr>
<table>
</form>
</body>
</html>

Now I have to incorporate the same functionality in Flex

I used HTTPService class to achieve the same in Flex without success


<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" 
               xmlns:s="library://ns.adobe.com/flex/spark" 
               xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" applicationComplete="useHttpService();">
    <fx:Script>
        <![CDATA[
            import flash.net.*;
            
            import mx.controls.Alert;
            import mx.rpc.events.FaultEvent;
            import mx.rpc.events.ResultEvent;
            import mx.rpc.http.HTTPService;

        private var service:HTTPService 
           
            
        public function useHttpService():void {
            var parameters:Object = new Object();
            parameters.username = "ABCD"
            parameters.isbn = "12345"
            parameters.userRole = "TEACHER"
            service = new HTTPService();
            service.destination = "Login.do";
            service.method = "POST";
            service.addEventListener("result", httpResult);
            service.addEventListener("fault", httpFault);
            service.send(parameters);
        }
        public function httpResult(event:ResultEvent):void {
            var result:Object = event.result;
            Alert.show(">>--- " + result.toString());
            //Do something with the result.
        }
        
        public function httpFault(event:FaultEvent):void {
            var faultstring:String = event.fault.faultString;
            Alert.show(">>" + event.fault.toString());
        }
        ]]>
    </fx:Script>
    <fx:Declarations>
        <!-- Place non-visual elements (e.g., services, value objects) here -->
    </fx:Declarations>
    
</s:Application>

The error message received is


>>[RPC Fault faultString="[MessagingError message='Destination 'Login.do' either does not exist or the destination has no channels defined (and the application does not define any default channels.)']" faultCode="InvokeFailed" faultDetail="Couldn't establish a connection to 'Login.do'"]

I am not aware how to fix this error.

Any help is appreciated