如何通过 AsyncToken 处理远程方法调用? [英] How do i handle Remote Method calls via AsyncToken?
问题描述
所以这是我想要工作的 mxml:
So here is the mxml i would like to get working:
<?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">
<fx:Script>
<![CDATA[
import argoseye.main.Golem;
import mx.collections.ArrayCollection;
import mx.rpc.AsyncResponder;
import mx.rpc.AsyncToken;
import mx.rpc.Responder;
import mx.rpc.events.FaultEvent;
import mx.rpc.events.InvokeEvent;
import mx.rpc.events.ResultEvent;
import mx.rpc.remoting.RemoteObject;
protected function button1_clickHandler(event:MouseEvent):void
{
var ro:RemoteObject = new RemoteObject("destination");
ro.endpoint = "http://Jesus/blazeds/messagebroker/amf";
ro.addEventListener(InvokeEvent.INVOKE,onInvoke);
var token:AsyncToken = new AsyncToken();
token.addResponder(new AsyncResponder(onResult,onFault));
token = ro.getCells();
textfeld.text = textfeld.text + "Clickhandler called .... \n";
}
public function onResult(event:ResultEvent,token:Object):void {
textfeld.text = textfeld.text + "Resulthandler called .... \n";
var cellList:ArrayCollection = event.result as ArrayCollection;
}
public function onFault(event:FaultEvent,token:Object):void
{
textfeld.text = textfeld.text + "Faulthandler called .... \n";
}
public function onInvoke(event:InvokeEvent):void {
textfeld.text = textfeld.text + "Invokehandler called .... \n";
}
]]>
</fx:Script>
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<s:Button x="1093" y="575" label="Button" click="button1_clickHandler(event)"/>
<s:TextArea x="1022" y="183" id="textfeld"/>
</s:Application>
输出是
调用处理程序调用....
Invokehandler called ....
Clickhandler 调用....
Clickhandler called ....
Resulthandler 不会被调用,尽管 BlazeDS 控制台注册了一个成功的 Resultevent.我做错了什么?
The Resulthandler doesnt get called, allthough the BlazeDS Console registers an successfull Resultevent. What do I do wrong?
我尝试将过程导出到一个类中,该类应该管理这些东西.
I tried exporting the procedure into a class, which is supposed to manage these things.
package argoseye.main
{导入 flash.events.Event;
{ import flash.events.Event;
import mx.collections.ArrayCollection;
import mx.messaging.ChannelSet;
import mx.messaging.channels.AMFChannel;
import mx.rpc.AsyncResponder;
import mx.rpc.AsyncToken;
import mx.rpc.events.FaultEvent;
import mx.rpc.events.ResultEvent;
import mx.rpc.remoting.RemoteObject;
public class Schem
{
public var info:String="";
public function Schem()
{
}
public function loadCurrentSchem():void
{
var ro:RemoteObject = new RemoteObject("Hibernatetest");
ro.endpoint = "http://jesus/blazeds/messagebroker/amf";
var token:AsyncToken = ro.getCells();
token.addResponder(new AsyncResponder(onResult,onFault));
info = info + "Loader Called ...";
}
public function onResult(event:ResultEvent,token:Object):void {
var cellList:ArrayCollection = event.result as ArrayCollection;
info = info + "Resulthandler Called";
}
public function onFault(event:FaultEvent,token:Object):void
{
}
//Eventhandlers
//Getters, Setters
}
}
如果我调用它,它不会到达事件处理程序.我的错误在哪里?
If i call it, it doesnt reach the eventhandler. Where is my mistake?
推荐答案
您的错误在于以下几行:
Your error lies in these lines:
var token:AsyncToken = new AsyncToken();
token.addResponder(new AsyncResponder(onResult,onFault));
token = ro.getCells();
您正在第 1 行创建一个新令牌.您在第 2 行指定了一个响应者.然后在第 3 行重新分配令牌.
You're creating a new token on line 1. You assign a responder on line 2. And then you reassign the token on line 3.
您在第 3 行所做的实际上是创建一个新令牌,因此它没有附加响应者,因为它是一个新实例.
What you do on line 3 is effectively creating a new token, thus it doesn't have the responder attached to it, because it's a new instance.
所以应该是:
var token:AsyncToken = ro.getCells();
//ro.getCells() will return a new instance of AsyncToken
token.addResponder(new AsyncResponder(onResult,onFault));
这篇关于如何通过 AsyncToken 处理远程方法调用?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!