WebService返回xml，转换成Array，绑定DataGrid

最新推荐文章于 2021-03-11 14:51:02 发布

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最新推荐文章于 2021-03-11 14:51:02 发布

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分类专栏： .Net Java 文章标签： datagrid webservice xml encoding asp.net layout

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本文介绍如何使用Flex通过WebService获取XML数据，并详细展示了如何解析这些数据以供DataGrid展示。文中提供了完整的Flex代码示例及后端WebService方法实现。

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dee.mxml

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" creationComplete="AvitHandle()">
    <mx:Script>
        <![CDATA[
            import mx.rpc.events.FaultEvent;
            import mx.rpc.soap.WebService;
            import mx.rpc.events.ResultEvent;
            import mx.controls.Alert;

            public function AvitHandle():void
            {
                var web:WebService = new WebService();
                web.wsdl = "http://localhost:2250/flex%203.0%20asp.net%20test/WebServiceTest.asmx?wsdl";
                //必须调用loadwsdl方法下载ws说明文件，否则即使调用webservice的方法也是没有反应的
                web.loadWSDL();
                //添加成功调用侦听
                web.addEventListener(ResultEvent.RESULT,wsHandle);
                //添加错误调用侦听
                web.addEventListener(FaultEvent.FAULT, fault);
                web.Readxml.send();
            }

            //成功调用处理函数
            public function wsHandle(e:ResultEvent):void
            {
                //ddd.text = e.result as String;
                var menus:XML = XML(e.result as String);
                var results:XMLList = menus.children();

                var array:Array = ElementToAttr(results);

                DataGrid1.dataProvider = array;
            }

            /*将如下类型的xml转换成array，以便可以作为DataProvider给DataGrid,Tree等组件绑定数据
            <?xml version="1.0" encoding="utf-8" ?>
            <Items>
                <Item>
                <name>nam1</name>
                  <grender>boy</grender>
                  <from>guangxi</from>
                  </Item>
                <Item>
                  <name>nam2</name>
                  <grender>boy</grender>
                  <from>shanghai</from>
                </Item>
            </Items>
            */
            public function ElementToAttr(results:XMLList):Array
            {
                var array:Array=new Array();
                for each(var child:XML in results){
                    var obj:Object=new Object();

                    obj[child.nodeKind()]=child[child.nodeKind()];
                    for each(var ite:XML in child.children()){
                        obj[ite.name().toString()]=child[ite.name().toString()];
                    }

                    /*
                    obj["name"]=child.name;
                    obj["grender"]=child.grender;
                    obj["from"]=child.from;
                    */

                    array.push(obj);
               }
               return array;
            }

            //错误处理函数
            public function fault(e:FaultEvent):void
            {
                Alert.show(e.fault.faultString,'Error')
            }
        ]]>
    </mx:Script>
    <mx:Label text="Label" id="ddd" fontSize="12"/>
    <mx:DataGrid id="DataGrid1">
        <mx:columns>
            <mx:DataGridColumn headerText="姓名" dataField="name"/>
            <mx:DataGridColumn headerText="性别" dataField="grender"/>
            <mx:DataGridColumn headerText="籍贯" dataField="from"/>
        </mx:columns>
    </mx:DataGrid>
</mx:Application>

WebService方法

    [WebMethod]
    public string Readxml()
    {
        string str;
        str = "<?xml version=/"1.0/" encoding=/"utf-8/" ?>";
        str += "<Items>";

        for (int i = 1; i < 10; i++)
        {
            str += "<Item>";
            str += "<name>nam"+ i +"</name>";
            str += "<grender>boy" + i + "</grender>";
            str += "<from>shanghai" + i + "</from>";
            str += "</Item>";
        }

        str += "</Items>";

        XmlDocument dcxml = new XmlDocument();
        dcxml.LoadXml(str);

        return str;
    }