<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
</dependencies>

package com.gzl.cn.listener;

import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

public class MyListener implements ServletContextListener {
 @Override
 public void contextInitialized(ServletContextEvent sce) {
  System.out.println("contextInitialized...web應(yīng)用啟動");
 }

 @Override
 public void contextDestroyed(ServletContextEvent sce) {
  System.out.println("contextDestroyed...當(dāng)前web項目銷毀");
 }
}

package com.gzl.cn.servlet;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class MyServlet extends HttpServlet {

 //處理get請求
 @Override
 protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
  doPost(req,resp);
 }

 @Override
 protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
  resp.getWriter().write("Hello MyServlet");
 }
}

package com.gzl.cn.filter;

import javax.servlet.*;
import java.io.IOException;

public class MyFilter implements Filter {

 @Override
 public void init(FilterConfig filterConfig) throws ServletException {

 }

 @Override
 public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
  System.out.println("MyFilter process...");
  chain.doFilter(request,response);

 }

 @Override
 public void destroy() {

 }
}

package com.gzl.cn.config;

import java.util.Arrays;

import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletListenerRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import com.gzl.cn.filter.MyFilter;
import com.gzl.cn.listener.MyListener;
import com.gzl.cn.servlet.MyServlet;

@Configuration
public class MyServerConfig {

 //注冊三大組件
 @Bean
 public ServletRegistrationBean myServlet(){
  ServletRegistrationBean registrationBean = new ServletRegistrationBean(new MyServlet(),"/myServlet");
  registrationBean.setLoadOnStartup(1);
  return registrationBean;
 }

 @Bean
 public FilterRegistrationBean myFilter(){
  FilterRegistrationBean registrationBean = new FilterRegistrationBean();
  registrationBean.setFilter(new MyFilter());
  registrationBean.setUrlPatterns(Arrays.asList("/hello","/myServlet"));
  return registrationBean;
 }

 @Bean
 public ServletListenerRegistrationBean myListener(){
  ServletListenerRegistrationBean<MyListener> registrationBean = new ServletListenerRegistrationBean<>(new MyListener());
  return registrationBean;
 }

}