<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" creationComplete="main()">
 <mx:Script><![CDATA[
  import flash.xml.*;
  import flash.utils.*;

  import mx.messaging.*;
  import mx.messaging.channels.*;

  import mx.rpc.*;
  import mx.rpc.xml.*;
  import mx.rpc.remoting.*;
  import mx.rpc.events.*;

  private function main():void {

   var channels:ChannelSet = new ChannelSet();
   channels.addChannel(new HTTPChannel(null, "http://xxx.xxx.xxx.xxx/xxx"));

   var userService:RemoteObject = new RemoteObject();
   userService.destination = "XXX";
   userService.channelSet = channels;

   trace("XML.prettyPrinting before RPC invoking:", XML.prettyPrinting);
   userService.xxx().addResponder(new mx.rpc.Responder(
    function (event:Object):void {
     trace("XML.prettyPrinting after RPC invoking:", XML.prettyPrinting);
    },
    function (event:Object):void {
     trace("XML.prettyPrinting after RPC invoking:", XML.prettyPrinting);
    }
   ));
  }
 ]]></mx:Script>
</mx:Application>

public interface ObjectOperators {
 public Object get(Object o, Object key);
 public void put(Object o, Object key, Object value);
 public void remove(Object o, Object key);
}

import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptException;

public final class ECMAScriptHelper {
 static final public ObjectOperators getObjectOperators(ScriptEngine ecmaScriptEnging) throws ScriptException {
  return ((Invocable)ecmaScriptEnging).getInterface(ecmaScriptEnging.eval(
   "({" +
   " 'get':function(o, key) {" +
   "  return o[key]" +
   " }," +
   " 'put':function(o, key, value) {" +
   "  o[key] = value;" +
   " }," +
   " 'remove':function(o, key) {" +
   "  delete o[key];" +
   " }" +
   "})"
  ), ObjectOperators.class);
 }
}

ScriptEngineManager scriptEngineManager = new ScriptEngineManager();
ScriptEngine scriptEngine = scriptEngineManager.getEngineByName("ECMAScript");
ObjectOperators objectOperators = ECMAScriptHelper.getObjectOperators(scriptEngine);
Object json = scriptEngine.eval("({a:1, b:3, c:['xxx', 'yy']})");
System.out.print(objectOperators.get(json, "a")); // 嘿嘿，能print出a的值，1
Object jsonArray = objectOperators.get(json, "c");
String xxx = (String)objectOperators.get(jsonArray, 0);
System.out.print(xxx);