说明：  MVC全名是Model View Controller，是模型(model)－视图(view)－控制器(controller)的缩写， 它是一种软件设计典范，用一种业务逻辑、数据、界面显示分离的方法组织代码，其好处是将业务逻辑聚集到一个部件里面，在改进和指定个性化页面的同时不需要重新编写业务逻 辑，MVC被独特的发展起来用于映射传统的输入，处理，显示在一个业务逻辑的图形化业务界面中。
(The full name of MVC is model view controller, which is the abbreviation of model view controller, It is a model of software design. It organizes code by separating business logic, data and interface display. Its advantage is that business logic can be gathered into one component. It can improve and specify personalized pages without rewriting business logic MVC has been developed to map traditional input, processing and display in a graphical business interface of business logic.)