new Ext.data.Store

store = new Ext.data.Store({
        proxy:new Ext.data.HttpProxy({url:"loadConfig.action"}),
        //建立数据解析器
        reader:new Ext.data.JsonReader({
                root:'data',
                totalProperty:'totalCount'
            },
            [{name:'cfg_desc'}
            ,{name:'cfg_key'}
            ,{name:'cfg_type'}
            ,{name:'cfg_type_sort'}
            ,{name:'cfg_value'}
        ])
    });
store.load({params:{start:0,limit:5}});