**1.ServletDemo** ~~~ package com.servlet; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; public class ServletDemo extends HttpServlet { protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("haha"); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("heihei"); } } ~~~ **2.web.xml注册** ~~~ <!--自己配置的servlet--> <servlet> <servlet-name>ServletDemo</servlet-name> <servlet-class>com.servlet.ServletDemo</servlet-class> </servlet> <servlet-mapping> <servlet-name>ServletDemo</servlet-name> <url-pattern>/haha</url-pattern> </servlet-mapping> ~~~