flex中xml和xmllist简介

1、XML和XMLList有什么区别呢，很简单，看是否含有根节点。举例来说：

<root>

</root>

这就是一个典型的XML，其中<root>是根节点，<node>是子节点。type,name是属性名，等号右边是属性值。而

这一部分就是一个XMLList。

注：<node type="student" name="学生一" />也可以转成成XML对象。这点在遍历xmllist时会使用到。

2、遍历xmllist。

下面是一段代码，简单介绍了从xml-->xmllist，然后遍历xmllist的过程

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="horizontal" verticalAlign="middle"
    horizontalAlign="center" backgroundGradientColors="[0x000000,0x323232]" viewSourceURL="srcview/index.html"
    creationComplete="init();">
    <mx:Script>
    	<![CDATA[
    	import mx.controls.Alert;
    	
    	public function init():void{
    			var books:XML;

            	books = <books>
                        <book publisher="Addison-Wesley" name="book1" />
                        <book publisher="Addison-Wesley" name="book2" />
                        <book publisher="Addison-Wesley" name="book3" />
                        <book publisher="Addison-Wesley" name="book4" />
                        <book publisher="O'Reilly Media" name="book5" />
                        <book publisher="O'Reilly Media" name="book6" />
                    </books>;
                //将xml转成xmllist（取子项，下面两个方法等价）
//                var bookList:XMLList = books.child("*");
                var bookList:XMLList = books.children();
				xmllist.text = bookList;
				
				//遍历xmllist
				var i:int = 0;
				for each( var book:XML in bookList){
					i++;
					switch(i){
						case 1:
							//xml的取值方式如下
							x1.text = [email protected];
							break;
						case 2:
							x2.text = [email protected];
							break;
						case 3:
							x3.text = [email protected];
							break;
						case 4:
							x4.text = [email protected];
							break;
						case 5:
							x5.text = [email protected];
							break;
						case 6:
							x6.text = [email protected];
							break;
						default:
							break;
					}
				}
        }

    	]]>
    </mx:Script>
    <mx:VBox>
    	 <mx:TextArea id="xmllist" width="500" height="100">
	    </mx:TextArea>
	    
	    <mx:TextArea id="x1" width="500" height="50">
	    </mx:TextArea>
	    <mx:TextArea id="x2" width="500" height="50">
	    </mx:TextArea>
	    <mx:TextArea id="x3" width="500" height="50">
	    </mx:TextArea>
	    <mx:TextArea id="x4" width="500" height="50">
	    </mx:TextArea>
	    <mx:TextArea id="x5" width="500" height="50">
	    </mx:TextArea>
	    <mx:TextArea id="x6" width="500" height="50">
	    </mx:TextArea>
    </mx:VBox>
    
</mx:Application>

执行结果：

flex中xml和xmllist简介