ExtJs jsonreader的有关问题-JavaSript-爱易网页

ExtJs jsonreader的有关问题

日期：2014-05-16　浏览次数：20411 次

ExtJs jsonreader的问题
Store无法得到后台返回的数据，直接输入后台地址是可以得到数据的。忙了5天都弄不出来，请大家帮帮忙。

网页aa.html的代码如下

JScript code


<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"/>
<title>Ajax + CGI Test</title>    
<link rel="stylesheet" type="text/css" href="ext/resources/css/ext-all.css"/>
    <script type="text/javascript" src="ext/adapter/ext/ext-base.js"></script>    
<script type="text/javascript" src="ext/ext-all.js"></script>
<script type="text/javascript">
    Ext.onReady(function(){
    var cum = new Ext.grid.ColumnModel([
        {header:'ID',dataIndex:'id'},
        {header:'adValue',dataIndex:'adValue'},
        {header:'adTime',dataIndex:'adTime'}
                    ]);
    var store = new Ext.data.Store({    
                    autoLoad:true,
                    fields:['id','adValue','adTime'],
                                    proxy:new Ext.data.HttpProxy                    ({url:'showAll.cgi'}),
                    reader:new Ext.data.JsonReader({totalProperty:'totalProperty',root:'root'},[{name:'id'},{name:'adValue'},{name:'adTime'}])
                });//问题是这个Store得不到showAll.cgi返回的数据，
        var cumgrid = new Ext.grid.GridPanel({
        renderTo:'cumGrid',
        store:store,
        stripeRows:true,
        viewConfig:{
            forceFit:true
        },
        autoHeight:true,
        autoWidth:true,
        cm:cum,
        bbar:new Ext.PagingToolbar({
            pageSize:10,
            autowidth:true, 
            store:store,
            displayInfo:true,
            emptyMsg:'no record'
        })
        });
        //store.load();
        cumgrid.render();
});
</script>
</head>    

<body>
    <dev id ="cumGrid"></div>
</body>
</html>

直接访问showAll.cgi返回的数据是这样的

JScript code


{totalProperty:20,root:[{id:'1',adValue:'408 ',adTime:'2012-07-23 19:24:01'},{id:'2',adValue:'408 ',adTime:'2012-07-23 19:24:01'},{id:'3',adValue:'408 ',adTime:'2012-07-23 19:24:02'},{id:'4',adValue:'408 ',adTime:'2012-07-23 19:24:02'},{id:'5',adValue:'408 ',adTime:'2012-07-23 19:24:03'},{id:'6',adValue:'407 ',adTime:'2012-07-23 19:24:03'},{id:'7',adValue:'407 ',adTime:'2012-07-23 19:24:04'},{id:'8',adValue:'407 ',adTime:'2012-07-23 19:24:04'},{id:'9',adValue:'408 ',adTime:'2012-07-23 19:24:05'},{id:'10',adValue:'407 ',adTime:'2012-07-23 19:24:05'},{id:'11',adValue:'407 ',adTime:'2012-07-23 19:24:06'},{id:'12',adValue:'407 ',adTime:'2012-07-23 19:24:06'},{id:'13',adValue:'406 ',adTime:'2012-07-23 19:24:07'},{id:'14',adValue:'407 ',adTime:'2012-07-23 19:24:07'},{id:'15',adValue:'406 ',adTime:'2012-07-23 19:24:08'},{id:'16',adValue:'408 ',adTime:'2012-07-23 19:24:08'},{id:'17',adValue:'407 ',adTime:'2012-07-23 19:24:09'},{id:'18',adValue:'408 ',adTime:'2012-07-23 19:24:09'},{id:'19',adValue:'406 ',adTime:'2012-07-23 19:24:10'},{id:'20',adValue:'405 ',adTime:'2012-07-23 19:24:10'}]}

------解决方案--------------------
感觉好像你的这行代码 reader:new Ext.data.JsonReader({totalProperty:'totalProperty',root:'root'},[{name:'id'},{name:'adValue'},{name:'adTime'}])不太对，试下改成：
reader:new Ext.data.JsonReader({totalProperty:'totalProperty',root:'root',fields:[{name:'id'},{name:'adValue'},{name:'adTime'}])
另外拜托你贴代码时整理下格式，有些行错乱很难读。。。

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