Flex读取XML总结

1. Model标签形式

首先声明Model标签，

<mx:Model id="model" source="config.xml"/>

<config> 
                <username>Flex</username> 
 
               <password>123456</password> 
 
</config> 

<config>

                <username>Flex</username>

               <password>123456</password>

</config>

 

Flex代码
<mx:Label text="{model.username}"/> 

<mx:Label text="{model.username}"/>

那么，只需要在初始化事件中直接调用即可，例如：model.username, model.password即可取到想要的值。

 

2 URLLoader

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" 
                layout="absolute" 
                initialize="init()">  
    <mx:Script>  
        <![CDATA[  
            import mx.controls.Alert;  
 
            private function init():void  
            {  
                var urlrequest:URLRequest=new URLRequest("test.xml");  
                var loader:URLLoader=new URLLoader();  
                loader.load(urlrequest);  
                loader.addEventListener(Event.COMPLETE, completehandler);  
            }  
 
            private function completehandler(event:Event):void  
            {  
                var xml:XML=new XML(event.target.data);  
                Alert.show(xml.toString());  
            }  
        ]]>  
    </mx:Script>  
</mx:Application> 

 3  FileStream

private function readXML1():void{
     var xmlFile:File = new File("file path");
     var stream:FileStream = new FileStream();
     stream.open(xmlFile, FileMode.READ);
     var xml:XML = XML(stream.readUTFBytes(stream.bytesAvailable));
     stream.close();
}

Flex写XML的方法:
public static function writeXMLFile(xml:XML):void{
     var stream:FileStream = new FileStream();
     var xmlFile:File = new File("file path");
     var outputString:String = '<?xml version="1.0" encoding="utf-8"?>\n';
     outputString += xml.toXMLString();
     outputString = outputString.replace(/\n/g, File.lineEnding);
     stream = new FileStream();
     stream.open(xmlFile, FileMode.WRITE);
     stream.writeUTFBytes(outputString);
     stream.close();
} 

 可以通过WebService，HttpService以及RemoteObject等方式调用Java或C#等完成文件的读写操作。

Flex端 ：

<mx:Script>
    javaService.getOutStream(xml);
</mx:Script>

<mx:RemoteObject id="javaService" destination="fileOutput" showBusyCursor="true"
result="Alert.show('设置成功，请刷新浏览器！')" fault="Alert.show('文件输出错误！')"/>

 Java端：

package util;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStreamWriter;

public class setView {
public boolean getOutStream(String str) {
   try {
    File f = new File("webapps/test/xml/example.xml");
    FileOutputStream fos = new FileOutputStream(f, false);
    OutputStreamWriter osw = new OutputStreamWriter(fos,"UTF-8");
    BufferedWriter bw = new BufferedWriter(osw);
    bw.write(str);
    bw.flush();
    bw.close();
    osw.close();
    fos.close();
    return true;
   } catch (Exception e) {
    e.printStackTrace();
    return false;
   }
}
}

 config.xml添加配置

<destination id="fileOutput" channels="my-amf">
        <properties>
            <source>util.setView</source>
        </properties>
    </destination>