How to use HTTPService

[sethu]

Hi,

I'm new in Flex Builder.

My Question is How do i use HTTPService in MSXML application.

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="userRequest.send()">
<mx:HTTPService id="userRequest" url="http://192.168.0.10/index.asp" useProxy="false" method="POST">

</mx:HTTPService>
<mx:Form x="49" y="74" width="493" height="293">
<mx:FormItem label="Username" id="Username">
<mx:TextInput/>
</mx:FormItem>
<mx:FormItem label="Label">
<mx:Button label="Button" click="userRequest.send()"/>
</mx:FormItem>

</mx:Form>
<mxataGrid id="dgUserRequest" dataProvider="{userRequest.lastResult.users.user" width="268">
<mx:columns>
<mxataGridColumn headerText="User Name" dataField="username"/>

</mx:columns>

</mxataGrid>
</mx:Application>

in my server i have a asp page and build XML Output.

I am not able to run this page when i click Run icon in Flex Builder.

Pls help me out

Sethu

[wvxvw]

This is because your HTTPService does nothing, you have to define handlers for result and fault events.

[sethu]

Hi,

Thanks for your reply.

Actually i got this code from website.

<?xml version=”1.0″ encoding=”utf-8″?>
<mx:Application xmlns:mx=”http://www.adobe.com/2006/mxml” xmlns=”*”
layout=”absolute” creationComplete=”userRequest.send()”>

<mx:HTTPService
id=”userRequest”
url=”http://www.myurl.com/flex/request.asp”
useProxy=”false”
method=”POST”>
<mx:request xmlns=”">
<username>{username.text}
</username></mx:request>
</mx:HTTPService>

<mx:Form x=”22″ y=”10″ width=”493″>
<mx:HBox><mx:Label text=”Username”/><mx:TextInput id=”username”/></mx:HBox>
<mx:Button label=”Submit” click=”userRequest.send()”/>
</mx:Form>

<mx ataGrid id=”dgUserRequest” x=”22″ y=”140″
dataProvider=”{userRequest.lastResult.users.user}”
width=”493″ height=”125″>
<mx:columns>
<mx ataGridColumn headerText=”User ID” dataField=”userid”/>
<mx ataGridColumn headerText=”User Name” dataField=”username”/>
<mx ataGridColumn headerText=”E-Mail” dataField=”emailaddress”/>
</mx:columns>
</mx ataGrid>

<mx:TextInput x=”355″ y=”273″ id=”selectedemailaddress”
text=”{dgUserRequest.selectedItem.emailaddress}”/>

</mx:Application>

in my asp page contains

<%



mxmlStr = “<users>”
mxmlStr = mxmlStr & “<user><userid>121</userid><username>Obama</username><emailaddress>[email protected]</emailaddress></user>” & vbcrlf
mxmlStr = mxmlStr & “<user><userid>122</userid><username>Bush</username><emailaddress>[email protected]</emailaddress></user>” & vbcrlf
mxmlStr = mxmlStr & “<user><userid>123</userid><username>Bill</username><emailaddress>[email protected]</emailaddress></user>” & vbcrlf
mxmlStr = mxmlStr & “</users>”

Response.write mxmlStr
%>

asp page resides in another machine. flex running different machine.

help me out

[wvxvw]

Oh, sorry, I haven't seen this:

dataProvider="{userRequest.lastResult.users.user"

Firstly, add closing brace, secondly, what is vbcrlf anyway? It doesn't seem to me the ASP code would output a valid XML anyway... what happens when you try to view it in browser?

BTW, wrapping code in the [ code ][ /code ] tags would help a lot.

EDIT: Just tried this (found out that's vbcrlf is a windows style double line break). And it looks OK, meaning, that if there's no mistake in the URL, then this test should work. Few recommendations: convert the output to UTF-8, because this is the format Flash expects the XML to be. And if these [“”] ware the original quotes in your ASP file, - change them to regular quotes [""] instead of "wordpress quotes".

[sethu]

MXML Page
========
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="userRequest.send()">
<mx:HTTPService id="userRequest" url="http://192.168.0.10/index.asp" useProxy="false" method="POST">

</mx:HTTPService>
<mx:Form x="49" y="74" width="493" height="293">

<mx:FormItem label="Label">
<mx:Button label="Button" click="userRequest.send()"/>
</mx:FormItem>

</mx:Form>
<mxataGrid id="dgUserRequest" dataProvider="{userRequest.lastResult.users.user}" width="268">
<mx:columns>
<mxataGridColumn headerText="User Name" dataField="username"/>

</mx:columns>

</mxataGrid>
</mx:Application>

================



When i tried to run this page got below error

[RPC Fault faultString="HTTP request error" faultCode="Server.Error.Request" faultDetail="Error: [IOErrorEvent type="ioError" bubbles=false cancelable=false eventPhase=2 text="Error #2032: Stream Error. URL: http://192.168.0.10/index.asp"]. URL: http://192.168.0.10/index.asp"]
at mx.rpc::AbstractInvoker/http://www.adobe.com/2006/flex/mx/internal::faultHandler()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\ rpc\AbstractInvoker.as:220]
at mx.rpc::Responder/fault()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\ rpc\Responder.as:53]
at mx.rpc::AsyncRequest/fault()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\ rpc\AsyncRequest.as:103]
at DirectHTTPMessageResponder/errorHandler()[C:\autobuild\3.2.0\frameworks\projects\rpc\src\mx\ messaging\channels\DirectHTTPChannel.as:362]
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at flash.net::URLLoader/redirectEvent()


Sethu

[wvxvw]

IOErrorEvent means that the page isn't there.