MVC流程图

<h3>three layers</h3> <h5>三层框架</h5> <ul> <li>model</li> <li>view</li> <li>controller</li> </ul> <h5>三层作用域</h5> <ul> <li>frame</li> <li>common</li> <li>app</li> </ul> <p><img src="https://www.showdoc.cc/server/api/common/visitfile/sign/2088bfe8a4746c6bccf7b6c7a095c02c?showdoc=.jpg" alt="" /></p>