Flex读取xml文件

主要有两个方法：

 

（1）通过HTTPService

（2）通过URLLoader

 

代码如下：

mxml代码

<?xml version="1.0" encoding="utf-8"?>   
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="init()">   
<mx:Script>   
   <![CDATA[   
    import mx.collections.ArrayCollection;   
    import mx.rpc.events.ResultEvent;   
    import mx.rpc.http.HTTPService;   
      
    public const xmlUrl:String = "config.xml";   
    [Bindable] private var colors1:ArrayCollection;   
    [Bindable] private var colors2:XML;   
      
    private function init():void{   
     //方法一：通过HTTPService   
     var service:HTTPService = new HTTPService();   
     service.url = xmlUrl;   
     service.addEventListener(ResultEvent.RESULT, resultHandler);   
     service.send();   
       
     //方法二：通过URLLoader   
     var request:URLRequest = new URLRequest(xmlUrl);   
     var loader:URLLoader = new URLLoader(request);   
     loader.addEventListener(Event.COMPLETE, loaderCompleteHandler);   
    }   
      
    private function resultHandler(event:ResultEvent):void{   
     colors1 = event.result.colors.color;   
    }   
      
    private function loaderCompleteHandler(event:Event):void{   
     colors2 = new XML(event.target.data);   
    }   
   ]]>   
</mx:Script>   
<mx:List x="100" y="150" dataProvider="{colors1}" labelField="name">   
</mx:List>   
<mx:List x="300" y="150" dataProvider="{colors2.color}" labelField="@name">   
</mx:List>   
</mx:Application>  

config.xml文件

 

<colors>   
<color name="LightGrey" value="#D3D3D3"/>   
<color name="Silver" value="#C0C0C0"/>   
<color name="DarkGray" value="#A9A9A9"/>   
<color name="Gray" value="#808080"/>   
<color name="DimGray" value="#696969"/>   
<color name="Black" value="#000000"/>   
</colors>  

 

实例：

登录

<?xml version="1.0" encoding="utf-8"?>   
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">   
    <mx:Script>   
        <![CDATA[   
            import mx.controls.Alert;   
            import mx.rpc.events.ResultEvent;   
            import flash.net.navigateToURL;   
               
            private function goLogin():void{   
                login.send();   
            }   
            private function resultHandler(event:ResultEvent):void{   
                var entry:String = event.result.users.a.toString();   
                if(entry == 'ok'){   
           
                }else{   
                    Alert.show('Username or Password is/are wrong !');   
                }                  
            }   
        ]]>   
    </mx:Script>   
    <mx:HTTPService id="login" method="POST" showBusyCursor="true" url="flexlogin.php" result="resultHandler(event)">   
        <mx:request xmlns="">   
            <mx:username> {username.text} </mx:username>   
            <mx:userpwd> {userpwd.text} </mx:userpwd>   
        </mx:request>   
    </mx:HTTPService>   
       
    <mx:Panel width="310" height="265" layout="absolute" title="登录" fontSize="12" fontWeight="normal">   
        <mx:TextInput x="93" y="51" id="username" fontSize="12"/>   
        <mx:TextInput x="92" y="95" id="userpwd" fontSize="12" displayAsPassword="true"/>   
        <mx:Button x="73" y="154" label="登录" id="btn1" click="goLogin()" fontWeight="normal" fontSize="12"/>   
        <mx:Label x="32" y="53" text="用户名：" fontSize="12"/>   
        <mx:Label x="43" y="97" text="密码：" fontSize="12"/>   
        <mx:Button x="154" y="154" label="注册" fontSize="12" fontWeight="normal" id="btn2"/>   
        <mx:Label x="10" y="10" text="测试用 用户名 User 密码 123456" fontSize="12" width="243"/>   
    </mx:Panel>   
       
</mx:Application>  

 

 

flexlogin.php

<?php        
$return="";   
if(isset($_POST[username]) && isset($_POST[userpwd])){   
 if ("User"==$_POST[username] && "123456"==$_POST[userpwd])   
    $return="ok";   
 else  
    $return="error";   
}   
$xml_return = '<users>';   
$xml_return.= '<a>'.$return.'</a>';   
$xml_return.= '</users>';   
echo $xml_return;  

 

 

实例：

rss

 

<?xml version="1.0" encoding="utf-8"?>   
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="feedRequest.send()">   
    <mx:Script>   
        <![CDATA[   
            import flash.net.navigateToURL;   
        ]]>   
    </mx:Script>   
    <!-- 利用flex获取并显示数据2 -->   
    <mx:HTTPService id="feedRequest" url="flexXml.xml" useProxy="false"/>   
       
    <mx:Panel x="10" y="10" width="475" height="400" layout="absolute" title="{feedRequest.lastResult.rss.channel.title}" >   
           
        <mx:DataGrid x="10" y="10" id="dgPosts" width="400" dataProvider="{feedRequest.lastResult.rss.channel.item}">   
            <mx:columns>   
                <mx:DataGridColumn headerText="Posts" dataField="title"/>   
                <mx:DataGridColumn headerText="Date" dataField="pubDate" width="150"/>   
            </mx:columns>   
        </mx:DataGrid>   
           
        <mx:LinkButton x="10" y="225" label="Read full part" click="navigateToURL(new URLRequest(dgPosts.selectedItem.link));"/>   
        <mx:TextArea x="10" y="175" width="400" htmlText="{dgPosts.selectedItem.description}"/>   
           
    </mx:Panel>   
       
</mx:Application>  

 

flexXml.xml

 

<?xml version="1.0" encoding="utf-8"?>   
<rss version="2.0">   
    <!-- 该文件放到tomcat的root目录 -->   
    <channel>   
        <title>你好,flex获取并显示数据</title>   
  
        <item>   
            <title>hello world</title>   
            <description> this is a best exanple in flex,you can do it with me ,and may you hava a wanderful future </description>   
            <link>http://hi.baidu.com/shiryu963</link>   
            <guid>http://hi.baidu.com/shiryu963</guid>   
            <category>general</category>   
            <pubDate>2009.6.8 12:17:11</pubDate>   
        </item>   
  
        <item>   
            <title>hello kava</title>   
            <description> best wishs to me,this is a best exanple in flex,you can do it with me ,and may you hava a wanderful future </description>   
            <link>http://hi.baidu.com/shiryu963</link>   
            <guid>gech.com</guid>   
            <category>general</category>   
            <pubDate>2009.8.8 6:20:11</pubDate>   
        </item>   
  
        <item>   
            <title>hello shiryu</title>   
            <description> i hava a best wish to you,this is a best exanple in flex,you can do it with me ,and may you hava a wanderful future </description>   
            <link>http://hi.baidu.com/shiryu963</link>   
            <guid>hahahhahhahahah</guid>   
            <category>improtant</category>   
            <pubDate>2009.4.22 6:20:11</pubDate>   
        </item>   
    </channel>   
</rss>