Libby,
You wouldn't typically call a method on a servlet through
the RemoteObject mechanism. Instead, RemoteObject is there to let you call
methods on plain old Java objects (pojos) or EJBs. So to modify your example a
bit, if you had a Java class called "ItemDefFacade" (which *doesn't* subclass
Servlet) that supported a method with the signature:
public
ArrayList getAllRecords()
...then you would set up your RemotObject tag like
this:
<mx:RemoteObject
id="remoteObj1" source="maintenance.ItemDefFacade">
<mx:method name="getAllRecords"
result="handleGetAllRecordsResult(event.result)" />
<mx:RemoteObject>
Notice that you have to specify the methods that can be
invoked on the remote object and you have to specify a handler to be triggered
when each method returns a result (the event.result property contains the
actual returned value). In this case we've pointed it to an ActionScript
function called handleGetAllRecordsResult() which might look like
this:
<mx:Script>
<![CDATA[
function
handleGetAllRecordsResult(recordsList)
{
myDisplayGrid.dataProvider =
recordsList;
}
]]>
</mx:Script>
</mx:Script>
So
to get the whole ball rolling, you need to trigger the method on the remote
object. Here is a button that would do just that:
<mx:Button
click="remoteObj1.getAllRecords()" />
You'll find more thorough coverage of this topic in the Flex docs
here:
I
hope that helps.
From: Libby [mailto:[EMAIL PROTECTED]
Sent: Thursday, March 24, 2005 2:51 PM
To: [email protected]
Subject: [flexcoders] Calling Java Servlet
Hello,
I am evaluating Flex. We have flash Remoting calling some servlets
running on Websphere 5.1, and for my eval I am trying to build a
similiar interface to them. So far I cannot find an example of how to
do this (call a servlet with arguments) so I was hoping someone here
could show me a tiny example, or offer corrections to my code?
Using flash, we call a controller servlet using one or more arguments.
ItemDefServlet("getAllRecords"); <-- like this in Flash
In Flex, this is what I have:
<mx:RemoteObject type="servlet" source="maintenance.ItemDefServlet"
protocol="http" id="remoteobject1"></mx:RemoteObject>
<mx:DataGrid id="ItemDef_grd"
dataProvider="{remoteobject2.getMessage.result}">
.
.
</mx:DataGrid>
<mx:ControlBar>
<mx:Button label="Get All" click="remoteobject1.send()" />
</mx:ControlBar>
thanks,
Libby
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