[flexcoders] Re: Flex and Java Communication
Ryan Thanks for the response. I tried to checkout wicket but it keeps asking me to authenticate. --- In flexcoders@yahoogroups.com, Ryan Gravener [EMAIL PROTECTED] wrote: http://code.google.com/p/wicket-flex-blazeds/ Ryan Gravener http://ryangravener.com/flex | http://twitter.com/ryangravener On Thu, Dec 4, 2008 at 4:00 PM, valdhor [EMAIL PROTECTED] wrote: Hmmm I'm wanting to learn Java and I already know Flex. The book mentioned comes from the other direction (Already know Java and want to learn Flex). Are there any resources/tutorials etc for someone like me who wants to learn Java for use with BlazeDS/LCDS. I already know C++ so the language itself is pretty easy. I get bogged down on how to create the server side application and connect it to Flex. Can anybody point me in the right direction?
[flexcoders] Re: Flex and Java Communication
--- In flexcoders@yahoogroups.com, saritha [EMAIL PROTECTED] wrote: Hi, How to communicate between Flex and Java? There are two main ways and which you choose depends largely on the future needs of your clients. If you need a generic API on your server because you are going to implement a variety of clients, or you want to open up your application for other people to code against, then a web service on the Java end and HTTPService in your Flex code is definitely the way to go. However, if you are looking for speed and small packet size and squeezing the most out of your app, then you should use AMF via RPC, i.e. remote objects and BlazeDS. You'll have a tight binding between your types on both sides and the API can be very clean and tailored specifically to your needs. I find it more elegant and there's less code to maintain. I have used both but prefer the remote object approach as I think that coding for possible future scenarios tends to unnecessarily dilute my current app and I'd prefer to take the performance advantages of AMF. It's a trade-off I am happy to make and you need to make the same judgement.
[flexcoders] Re: Flex and Java Communication
Hmmm I'm wanting to learn Java and I already know Flex. The book mentioned comes from the other direction (Already know Java and want to learn Flex). Are there any resources/tutorials etc for someone like me who wants to learn Java for use with BlazeDS/LCDS. I already know C++ so the language itself is pretty easy. I get bogged down on how to create the server side application and connect it to Flex. Can anybody point me in the right direction?
Re: [flexcoders] Re: Flex and Java Communication
http://code.google.com/p/wicket-flex-blazeds/ Ryan Gravener http://ryangravener.com/flex | http://twitter.com/ryangravener On Thu, Dec 4, 2008 at 4:00 PM, valdhor [EMAIL PROTECTED] wrote: Hmmm I'm wanting to learn Java and I already know Flex. The book mentioned comes from the other direction (Already know Java and want to learn Flex). Are there any resources/tutorials etc for someone like me who wants to learn Java for use with BlazeDS/LCDS. I already know C++ so the language itself is pretty easy. I get bogged down on how to create the server side application and connect it to Flex. Can anybody point me in the right direction?
[flexcoders] Re: Flex and Java Communication
There are a couple of different ways. To start, you can use a servlet
that generates XML and use an HTTPService in Flex. A more
sophisticated option is to use the free BlazeDS data service tool to
pass objects between Java and Flex.
For the first option, you can create an HTTPService like this,
import mx.rpc.http.HTTPService;
import mx.rpc.events.ResultEvent;
import mx.rpc.events.FaultEvent;
private function getServletXML():void {
var service:HTTPService = new HTTPService();
service.cancel(); // good idea to cancel service first.
service.url = http://myserver.com/MyXMLServlet;;
service.resultFormat = e4x; // Makes XML nodes accessible in
ActionScript
service.contentType = application/xml;
service.addEventListener(ResultEvent.RESULT, serviceResultHandler);
service.addEventListener(FaultEvent.FAULT, serviceFaultHandler);
service.send();
}
private function serviceResultHandler(event:ResultEvent):void {
var myXML:XML = XML(event.result);
// here you'd do something with the myXML object, such as bind it to
a datagrid
}
private function serviceFaultHandler(event:FaultEvent):void {
Alert.show(event.fault.message,Could not read XML servlet.);
}
You can look at this page for an example of connecting a servlet to
Flex:
http://blog.kevinhoyt.org/2007/12/07/flex-to-java-servlet-file-upload/
Another example: http://learn.adobe.com/wiki/display/Flex/2b.+Code+Files
To produce efficient XML in Java, look up the examples on this page,
http://www.javazoom.net/services/newsletter/xmlgeneration.html
-Alex
--- In flexcoders@yahoogroups.com, saritha [EMAIL PROTECTED] wrote:
Hi,
How to communicate between Flex and Java?
