Flex读写XML文件的方法与代码示例

Flex读XML的方法:

方法一:

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();}

方法二:

private function readXML2():void{
	var urlRequest:URLRequest = new URLRequest("xml file path");
	var urlLoader:URLLoader = new URLLoader(urlRequest);
	urlLoader.addEventListener(Event.COMPLETE,completeHandler);
}

private function completeHandler(event:Event):void{
	var xml:XML = new XML(event.target.data);
	trace(xml);
}

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();
}

补充: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.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>
	#Flex



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