How to forward a jsp page in flex application ( when a button is clicked)

Question

i am a fresher to this FLEX 2.0 , i designed the UI part in
flex, but when i click the submit button it has to forward to the
JSP page to check against the valid user,password , so how to
forward the page to jsp(i mean from flex to jsp) , if u can suggest
me with an example, it will be easy for me, is Flex Data Service 2
is necessary for this
thanks for ur speedy reply, hopping to get the solution for
this issue,
sandeep

Answer 1

Your JSP is, as far as Flex is concerned, just a data service
which it will request and read its response. I'd suggest using
<mx:HTTPService>. For example:
<mx:HTTPService id="authorize" url="validate.jsp"
fault="handleFault(event)" result="handleResult(event)">
<mx:request>
<userid>{username.text}</userid>
<password>{password.text}</password>
</mx:request>
</mx:HTTPService>
Flex creates the request:
http://{server}.{port}{context.root}/validate.jsp?userid=fred&password=flintstone
assuming that you have <mx:TextInput id="username" />
and <mx:TextInput id="password" /> components.
Your Submit button then does: authorize.send()
(note: you can also pass the request parameters in the send()
method - check the Flex docs on HTTPService).
Flex will listen for the response from your JSP. Typically a
JSP would respond with an HTML page, but you don't want to do that
for Flex. Your JSP should produce either a simple string ("yes" or
"no" or "error" etc) or an XML document.
The handleResult method can examine the response and do
what's necessary.