SpringBoot이 서브렛을 통합하는 두 가지 방법

        org.springframework.boot
        spring-boot-starter-web
    

@WebServlet(name = "firstServlet", urlPatterns = "/firstServlet")  //   servlet，       。
public class FirstServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.getWriter().append("firstServlet");
    }

}

@SpringBootApplication
@ServletComponentScan   //      ，             webservlet   
public class FirstServletApplication {

    public static void main(String[] args) {
        SpringApplication.run(FirstServletApplication.class, args);
    }
}

//       webServlet  
public class SecondServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.getWriter().append("SecondServlet");}}

@SpringBootApplication
public class SecondServletApplication {
    public static void main(String[] args) {
        SpringApplication.run(SecondServletApplication.class, args);
    }
    @Bean  //    ，          
    public ServletRegistrationBean getServletRegistrationBean() {  //     ServletRegistrationBean
        ServletRegistrationBean bean = new ServletRegistrationBean(new SecondServlet());     //     Servlet    
        bean.addUrlMappings("/secondServlet");  //     
        return bean;}}