//modelExt.define('et.model.Menu', { extend: 'Ext.data.Model', fields:  ['mid', 'text','cls','columns','url','expanded','optype']
});//或许你看到这些字段和下边json数据并不对应，这个并不重要，这里边有几个是我自己拓展的，只是没用到，只要几个关键的字段设置即可，下边会有介绍。

//storeExt.define('et.store.Menus',{extend: 'Ext.data.TreeStore',requires: 'et.model.Menu',model: 'et.model.Menu',autoLoad: true,　　　　　　　　　　　　//设置自动加载，在打开页面的时候数据就自动加载proxy: {type: 'ajax',url: 'data/manager.json',reader: {type: 'json',successProperty: 'success'}}
});

//viewExt.define('et.view.Menu',{ extend: 'Ext.tree.Panel', alias: 'widget.sxptmenu', requires:['et.store.Menus'], initComponent : function(){ Ext.apply(this,{ id: 'menu-panel', title: '系统菜单', iconCls:'icon-menu', margins : '0 0 -1 1', region:'west', border : false, enableDD : false, split: true, width : 212, minSize : 130, maxSize : 300, rootVisible: false, containerScroll : true, collapsible : true, autoScroll: false,store:Ext.create('et.store.Menus')}); this.callParent(arguments); }
}); 

//controllerExt.define('et.controller.Menu',{ extend: 'Ext.app.Controller', stores: ['Menus'],  models: ['Menu'],  views: ['Menu'],  init: function () {  //初始化部分，下面是部分是给菜单绑定单击事件，接下来会用，这里先注释  this.control({  'sxptmenu': {  itemmousedown: this.loadMenu}});},loadMenu:function(selModel, record){ 　　　　//加载菜单项对应panel，首先判断是不是叶子结点，是的话判断当前该panel是否已经创建，已创建的话直接激活，未创建的话创建并加入content-panelif (record.get('leaf')) {if(record.get('optype')=='window'){var win= Ext.getCmp(record.get('url'));if(!win){win=Ext.widget(record.get('url'))}win.show();}else{var panel = Ext.getCmp(record.get('id'));if(!panel){  panel ={id:record.get('url'),title: record.get('text'), xtype:record.get('url'),closable: true  };this.openTab(panel,record.get('url')); }else{ var main = Ext.getCmp("content-panel"); main.setActiveTab(panel);  } }}  },openTab : function (panel,id){var o = (typeof panel == "string" ? panel : id || panel.id); var main = Ext.getCmp("content-panel"); var tab = main.getComponent(o);       if (tab) { main.setActiveTab(tab);  } else if(typeof panel!="string"){  panel.id = o;  var p = main.add(panel);  main.setActiveTab(p);  }  }  });

//app.jsExt.Loader.setConfig({enabled: true});
Ext.application({name:'et',           autoCreateViewport: true,appFolder:'app',    'Menu'　　　　　　　　//加入菜单的controller]
});

[{"text":"题目管理","mid":"1","cls":"folder","leaf":false,"expanded": true,"children":[{"text":"题目列表","mid":"2","cls":"file","url":"subjectlist","leaf":true,"children":[]}]},{"text":"分组管理","mid":"3","cls":"folder","leaf":false,"expanded": true,"children":[{"text":"选题分组确认","mid":"4","cls":"file","url":"mstudentlist","leaf":true,"children":[]},{"text":"分组列表","mid":"5","cls":"file","url":"mstudentlist","leaf":true,"children":[]},{"text":"报告审阅","mid":"6","cls":"file","url":"mstudentlist","leaf":true,"children":[]}]}]