extjs获取不到json数据，大侠们帮忙看看

var store = new Ext.data.Store({ 

  proxy: new Ext.data.HttpProxy({ 

  url: './json/aaaa.action' 

  }), 

  reader: new Ext.data.JsonReader( 

  { 

  totalProperty: 'total', 

  root: 'rows'}, 

  [ 
  {name: 'title'} ,
  {name: 'context'},
  {name: 'index_id', type:"int" } ]), 
  remoteSort:true

  }); 
   
  store.load();
  alert(store.getCount());  
控制台输出的数据是
{"total":2,"rows":[{"title":"学校概况","context":"帮忙你本命年科技","index_id":1},{"title":"校训详解","context":"个个 即可很快 看 ","index_id":2}]}
但store就是获取不到数据，不知道错在哪里了？？

在 load事件中输出看看
...
,listeners:{
  load:function(){
  alert(store.getCount());
  }
}

返回的是0

测下来没错, 只是中文的话，aaaa.action 返回页面的编码用UTF-8

JScript code

Ext.onReady(function(){
  var store = new Ext.data.Store({  
      proxy: new Ext.data.HttpProxy({
      url: 'test.asp?' + escape(new Date())
    }),  
    reader: new Ext.data.JsonReader(  
    {  
      totalProperty: 'total',  
      root: 'rows'},  
      [  
        {name: 'title'} ,
        {name: 'context'},
        {name: 'index_id', type:"int" }
      ]
    ),
    listeners:{
        load:function(){
            alert(store.getCount());
        }
    }
  }); 
  store.load();
});