flex通过java后台获取ip和pcname

在***DAOImpl.java中的代码如下

    public String getCompuName()
    {
	    Map<String,String> map = System.getenv() ;
	    String computerName = map.get("COMPUTERNAME");// 获取计算机名  
	    return computerName;     
    } 
    public String getIp() 
    {
    	InetAddress addr = null;
	    try {
	    	addr = InetAddress.getLocalHost();
	    } 
	    catch (UnknownHostException e) 
	    {
	    	e.printStackTrace();
	    }
	    String ip = addr.getHostAddress().toString();//获得本机IP
	    return ip;
    }

import java.util.Map;
import java.net.InetAddress;
import java.net.UnknownHostException;

flex前台代码

<?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" xmlns:supportClasses="com.esri.ags.skins.supportClasses.*" minWidth="955" minHeight="600" creationComplete="init()">
	<fx:Script>
		<![CDATA[
			import mx.controls.Alert;
			import mx.rpc.events.FaultEvent;
			import mx.rpc.events.ResultEvent;
			public function init():void
			{
				IPandPcname.getCompuName();
				IPandPcname.getIp();
			}
			public function IPandPcname_faultHandler(event:FaultEvent):void
			{
				Alert.show(event.toString());
			}
			public function getCompuName_Handler(event:ResultEvent):void
			{
				Alert.show(event.result.toString());
			}
			public function getIp_Handler(event:ResultEvent):void
			{
				Alert.show(event.result.toString());
			}
		]]>
	</fx:Script>
	<s:layout>
		<supportClasses:AttachmentLayout/>
	</s:layout>
	<fx:Declarations>
		<!-- 将非可视元素（例如服务、值对象）放在此处 -->
		<mx:RemoteObject id="IPandPcname" destination="systemConfAction" fault="IPandPcname_faultHandler(event)">
			<mx:method name="getCompuName" result="getCompuName_Handler(event)" />
			<mx:method name="getIp" result="getIp_Handler(event)" />
		</mx:RemoteObject>
	</fx:Declarations>	
</s:Application>