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SpringBoot默认使用Tomcat作为嵌入式的Servlet容器;
定制和修改Servlet容器的相关配置
server.port=8081server.context-path=/crudserver.tomcat.uri-encoding=UTF-8//通用的Servlet容器设置server.xxx//Tomcat的设置server.tomcat.xxx
@Bean //一定要将这个定制器加入到容器中public EmbeddedServletContainerCustomizer embeddedServletContainerCustomizer(){ return new EmbeddedServletContainerCustomizer() { //定制嵌入式的Servlet容器相关的规则 @Override public void customize(ConfigurableEmbeddedServletContainer container) { container.setPort(8083); } };}
由于SpringBoot默认是以jar包的方式启动嵌入式的Servlet容器来启动SpringBoot的web应用,没有web.xml文件。
注册三大组件用以下方式
ServletRegistrationBean
//注册三大组件@Beanpublic ServletRegistrationBean myServlet(){ ServletRegistrationBean registrationBean = new ServletRegistrationBean(new MyServlet(),"/myServlet"); return registrationBean;}
FilterRegistrationBean
@Beanpublic FilterRegistrationBean myFilter(){ FilterRegistrationBean registrationBean = new FilterRegistrationBean(); registrationBean.setFilter(new MyFilter()); registrationBean.setUrlPatterns(Arrays.asList("/hello","/myServlet")); return registrationBean;}
ServletListenerRegistrationBean
@Beanpublic ServletListenerRegistrationBean myListener(){ ServletListenerRegistrationBeanregistrationBean = new ServletListenerRegistrationBean<>(new MyListener()); return registrationBean;}
SpringBoot帮我们自动SpringMVC的时候,自动的注册SpringMVC的前端控制器;DIspatcherServlet;
DispatcherServletAutoConfiguration中:
@Bean(name = DEFAULT_DISPATCHER_SERVLET_REGISTRATION_BEAN_NAME)@ConditionalOnBean(value = DispatcherServlet.class, name = DEFAULT_DISPATCHER_SERVLET_BEAN_NAME)public ServletRegistrationBean dispatcherServletRegistration( DispatcherServlet dispatcherServlet) { ServletRegistrationBean registration = new ServletRegistrationBean( dispatcherServlet, this.serverProperties.getServletMapping()); //默认拦截: / 所有请求;包静态资源,但是不拦截jsp请求; /*会拦截jsp //可以通过server.servletPath来修改SpringMVC前端控制器默认拦截的请求路径 registration.setName(DEFAULT_DISPATCHER_SERVLET_BEAN_NAME); registration.setLoadOnStartup( this.webMvcProperties.getServlet().getLoadOnStartup()); if (this.multipartConfig != null) { registration.setMultipartConfig(this.multipartConfig); } return registration;}
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