配置嵌入式Servlet容器

配置嵌入式Servlet容器

SpringBoot默认是用嵌入式的Servlet容器（Tomcat）

1.如何定制Servlet有关配置（ServletProperties）：

server.port=8080 server.context-path=/web # 通用的Servlet容器设置 # server.xxx # Tomcat的设置 server.tomcat.accept-count=100 # server.tomcat.xxx 

2.编写WebServerFactoryCustomizer定制器。

 @Bean public WebServerFactoryCustomizer<ConfigurableWebServerFactory> webServerFactoryCustomizer(){ 
    return new WebServerFactoryCustomizer<ConfigurableWebServerFactory>() { 
    @Override public void customize(ConfigurableWebServerFactory factory) { 
    //配置服务端口 factory.setPort(8080); } }; } 

3.注册Servlet、Filter、Listener组件

编写相关组件

public class MyServlet extends HttpServlet { 
    @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { 
    System.out.println("访问中"); resp.getWriter().write("成功"); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { 
    super.doPost(req, resp); } } 

public class MyFilter implements Filter { 
    @Override public void init(FilterConfig filterConfig) throws ServletException { 
    } @Override public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException { 
    System.out.println("拦截"); filterChain.doFilter(servletRequest,servletResponse); } @Override public void destroy() { 
    } } 

public class MyListener implements ServletContextListener { 
    @Override public void contextInitialized(ServletContextEvent sce) { 
    System.out.println("服务器启动"); } @Override public void contextDestroyed(ServletContextEvent sce) { 
    System.out.println("服务器关闭"); } } 

SpringBoot注册：

@Configuration public class MyServerConfig { 
    //注册三大组件 @Bean public ServletRegistrationBean myServlet(){ 
    ServletRegistrationBean servletRegistrationBean = new ServletRegistrationBean(); servletRegistrationBean.setServlet(new MyServlet()); servletRegistrationBean.setUrlMappings(Arrays.asList("/myServlet")); servletRegistrationBean.setLoadOnStartup(1); return servletRegistrationBean; } @Bean public FilterRegistrationBean myFilter(){ 
    FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(); //添加Filter filterRegistrationBean.setFilter(new MyFilter()); //设置拦截路径 filterRegistrationBean.setUrlPatterns(Arrays.asList("/myServlet")); return filterRegistrationBean; } @Bean public ServletListenerRegistrationBean servletListenerRegistrationBean(){ 
    ServletListenerRegistrationBean<MyListener> servletListenerRegistrationBean = new ServletListenerRegistrationBean(); servletListenerRegistrationBean.setListener(new MyListener()); return servletListenerRegistrationBean; } } 

使用外置Servlet（Tomcat）

<dependency> <groupId>org.springframework.boot 
     groupId> <artifactId>spring-boot-starter-tomcat 
      artifactId> <scope>provided 
       scope>  
        dependency> 

启动类

public class ServletInitializer extends SpringBootServletInitializer { 
    @Override protected SpringApplicationBuilder configure(SpringApplicationBuilder application) { 
    return application.sources(SpringBoot启动类.class); } }