【尚硅谷】SpringBoot2零基础入门教程-讲师：雷丰阳
笔记

路还在继续，梦还在期许

1、使用Servlet API

@ServletComponentScan(basePackages = “com.atguigu.admin”) :指定原生Servlet组件都放在那里
@WebServlet(urlPatterns = “/my”)：效果：直接响应，没有经过Spring的拦截器？
@WebFilter(urlPatterns={“/css/“,”/images/”})
@WebListener

推荐可以这种方式；

扩展：DispatchServlet 如何注册进来
● 容器中自动配置了 DispatcherServlet 属性绑定到 WebMvcProperties；对应的配置文件配置项是 spring.mvc。
● 通过 ServletRegistrationBean 把 DispatcherServlet 配置进来。
● 默认映射的是 / 路径。

Tomcat-Servlet；
多个Servlet都能处理到同一层路径，精确优选原则
A： /my/
B： /my/1

2、使用RegistrationBean

ServletRegistrationBean, FilterRegistrationBean, and ServletListenerRegistrationBean

@Configuration
public class MyRegistConfig {@Beanpublic ServletRegistrationBean myServlet(){MyServlet myServlet = new MyServlet();return new ServletRegistrationBean(myServlet,"/my","/my02");}@Beanpublic FilterRegistrationBean myFilter(){MyFilter myFilter = new MyFilter();
//        return new FilterRegistrationBean(myFilter,myServlet());FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(myFilter);filterRegistrationBean.setUrlPatterns(Arrays.asList("/my","/css/*"));return filterRegistrationBean;}@Beanpublic ServletListenerRegistrationBean myListener(){MySwervletContextListener mySwervletContextListener = new MySwervletContextListener();return new ServletListenerRegistrationBean(mySwervletContextListener);}
}