1 Ext.Loader.setConfig({enabled:true});//开启动态加载
 2 Ext.application({
 3     name: 'MVC',
 4 
 5     appFolder: 'mvc',
 6     
 7     controllers: ['MVCS'],
 8 
 9     launch: function() {
10         Ext.create('Ext.container.Viewport', {
11             layout: 'fit',
12             items: {
13                 xtype: 'userlist'
14             }
15         });
16     }
17 });