ExtJs4 load加载html页面

function getReceiveBoxPanel(){
	var receiveBoxPanel = Ext.getCmp('receiveBoxPanel');
	if(!receiveBoxPanel){
		receiveBoxPanel = Ext.create('Ext.panel.Panel', {
			id:'receiveBoxPanel',
			title:'收件箱',
			closable:true,
			layout:'fit',
			autoLoad:{
				url: basePath+'/postbox/findReceiveBox.action',//请求返回 html页面
				method:'POST'
			}
		});
	}
	return receiveBoxPanel;
}

	
		/WEB-INF/templates/postbox/receiveBox.html
		true
		text/html