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可能重复：
如何分别从每个父节点获取子节点？

我有一些 XML 数据..我想基于这个 XML 创建某些组件。下面给出了我的 XML 数据

 <main>
     <TabNavigator x="27" y="11" width="455" height="376" id="gh" backgroundColor="#A4B6E9">                                                         <NavigatorContent width="100%" height="100%" label="Client" id="clientTab">
   <Label x="10" y="30" width="52" height="25" text="Name:"/>
  <Label x="10" y="127" width="52" height="28" text="Addres"/>
<TextInput id="name_client" x="69" y="18" width="188" height="37" restrict="[A-Z a-z]"/>
<TextArea id="address_client" x="70" y="70" height="126"/>
<Label x="10" y="230" width="84" height="32" text="Phone:"/>
<TextInput id="phone_client" x="70" y="218" width="188" height="30" restrict="0-9" maxChars="10"/>
<Button x="100" y="291" height="28" label="Submit" click="submitClick()"/>
<Label id="errorClient" x="59" y="270" width="171" height="27" text="please fill the blank fields" color="red" visible="false"/>
</NavigatorContent><NavigatorContent width="100%" height="100%" label="Admin" id="adminTab">
<Label x="23" y="48" width="52" height="25" text="Name:"/>
<Label x="26" y="148" width="52" height="28" text="Addres"/><TextInput id="name_admin" x="105" y="33" width="188" height="37"/>
<TextArea id="address_admin" x="105" y="93" height="126"/>
<Label x="26" y="257" width="84" height="32" text="Phone:"/>
<TextInput id="phone_admin" x="104" y="246" width="188" height="30" restrict="0-9" maxChars="10"/>
<Button x="137" y="305" height="28" label="Submit"/>
<Label id="errorAdmin" x="100" y="286" width="171" height="17" color="red" fontSize="14" text="please fill the blank fields" visible="false"/>
<Button x="335" y="60" height="34" label="Admin Details"/>
<Button x="335" y="180" height="34" label="Client Details"/>
</NavigatorContent>
</TabNavigator>
<TitleWindow x="521" y="84" width="377" height="234">
<DataGrid x="0" y="0" width="375" height="163" borderVisible="true" id="details">
<columns>
<ArrayList> 
<GridColumn dataField="Name" id="arrayName"/>
<GridColumn dataField="Address" headerText="Address"/>
    <GridColumn dataField="Phone_Number" headerText="Phone_Number"/></ArrayList></columns>
  </DataGrid><Button x="139" y="167" height="28" label="Export"/>
 </TitleWindow>
</main>

我正在使用以下代码从上述 XML 中查找子节点。

   private function loadXML(targetURL:String):void 
                {
                    urlLdr.load(new URLRequest(targetURL));
                    urlLdr.addEventListener(Event.COMPLETE,urlLdr_complete);
                }
                private function urlLdr_complete(event:Event):void
                {

                    var xmlData:XML=new XML(URLLoader(event.currentTarget).data);                       
                        for each (var t:XML in xmlData.children()) 
                        {
                                            Alet.show(t.Name());
                                            }
                            }}

但我只有 2 个子节点（TabNavigator 和 NavigatorContent）。我如何获得所有子节点？任何人都可以帮助我吗？？？

我的代码如下。我现在只有子节点..还没有父节点。请帮助我获取父节点和子节点..

<fx:Script>
        <![CDATA[
            import flashx.textLayout.elements.BreakElement;
            import flashx.textLayout.formats.BackgroundColor;

            import mx.charts.chartClasses.DataDescription;
            import mx.collections.ArrayCollection;
            import mx.collections.XMLListCollection;
            import mx.containers.Canvas;
            import mx.containers.TabNavigator;
            import mx.controls.Alert;
            import mx.controls.Button;
            import mx.controls.Label;
            import mx.controls.Text;




            private var urlLdr:URLLoader=new URLLoader;
            private var childName:String;
            private var i:int=0;
            private var arrayCollection:ArrayCollection=new ArrayCollection;
            private function loadXML(targetURL:String):void 
            {
                urlLdr.load(new URLRequest(targetURL));
                urlLdr.addEventListener(Event.COMPLETE,urlLdr_complete);
            }
            private function urlLdr_complete(event:Event):void
            {

                var xmlData:XML=new XML(URLLoader(event.currentTarget).data);
                handleOneNode(xmlData);
            }
            private function handleOneNode(node:XML,parent:XML=null):void 
            {
            var children:XMLList=node.children();
            if(children.length()==0)
            {i++;
                childName=node.name();
                switch(childName.toString())
                {
                    case "Button":
                    {

                        var myButton:Button=new Button();
                        myButton.x=node..@x;
                        myButton.y=node..@y;
                        myButton.height=node..@height;
                        myButton.width=node..@width;
                        myButton.label=node..@label;
                        myCanvas.addChild(myButton);
                        break;
                    }
                    case "TabNavigator":
                    {
                        var myTabNavigator:TabNavigator=new TabNavigator();
                        myTabNavigator.x=node..@x;
                        myTabNavigator.y=node..@x;
                        myTabNavigator.height=node..@height;
                        myTabNavigator.id=node..@id;
                        myTabNavigator.width=node..@width;
                        break;
                    }
                    case "Datechooser":
                    {
                        break;
                    }
                    case "Label":
                    {
                        var myLabel:Label=new Label();
                        myLabel.x=node..@x;
                        myLabel.y=node..@x;
                        myLabel.height=node..@height;
                        myLabel.id=node..@id;
                        myLabel.width=node..@width;
                        myLabel.text=node..@text;
                        myCanvas.addChild(myLabel);
                    }
                    case "TextInput":
                        var myText:Text=new Text;
                        myLabel.x=node..@x;
                        myLabel.y=node..@x;
                        myLabel.height=node..@height;
                        myLabel.id=node..@id;
                        myLabel.width=node..@width;
                        myLabel.text=node..@text;
                        myCanvas.addChild(myLabel);
                    case "TitleWindow":
                    {
                    }
                    default:
                    {
                    }
                }

            }
            else
            {
                for each(var child:XML in children)
                {
                    handleOneNode(child,node);
                }
            }
            }

        ]]>
    </fx:Script>
4

1 回答 1

1

XML 类的 children() 方法只返回当前对象的直接子对象。如果您想浏览整个文档，您需要在每个孩子上递归调用您的方法。

因此，您需要编写如下内容：

private function handleOneNode(node:XML):void {
   var children:XMLList = node.children();
   if ( children.length() == 0 ) {
      //Handle Leaf node -> Create ui object, or whatever 
   } else {
      //Non terminal node, check children
      for each (var child:XML in children ) {
         handleOneNode(child);
      }
   }
}

在你的处理程序中，你称之为：

var xmlData:XML=new XML(URLLoader(event.currentTarget).data);
handleOneNode(xmlData)

编辑 为了访问父节点，您只需向 handleOneNode 函数添加一个附加参数。

private function handleOneNode(node:XML, parent:XML=null):void {
       var children:XMLList = node.children();
       if ( children.length() == 0 ) {
          //Handle Leaf node -> Create ui object, or whatever 
       } else {
          //Non terminal node, check children
          for each (var child:XML in children ) {
             handleOneNode(child, node);
          }
       }
    }

在你的处理程序中，你称之为：

var xmlData:XML=new XML(URLLoader(event.currentTarget).data);
handleOneNode(xmlData)
于 2012-08-27T08:00:37.287 回答