一、创建maven项目

org.apache.maven.archetypes:maven-archetype-webapp

 二、增加Servlet依赖

tomcat9及以前依赖

<!--加入servlet依赖（servlet的jar）-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>4.0.1</version>
      <scope>provided</scope>
    </dependency>
    <!--jsp的依赖（jsp相关的jar加进来）-->
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>javax.servlet.jsp-api</artifactId>
      <version>2.3.3</version>
      <scope>provided</scope>
    </dependency>

tomcat10(案例使用tomcat10)

   <dependency>
      <groupId>jakarta.servlet</groupId>
      <artifactId>jakarta.servlet-api</artifactId>
      <version>6.0.0</version>
      <scope>provided</scope>
    </dependency>

    <dependency>
      <groupId>jakarta.servlet.jsp</groupId>
      <artifactId>jakarta.servlet.jsp-api</artifactId>
      <version>3.1.1</version>
      <scope>provided</scope>
    </dependency>

三、创建java目录编写代码

创建java目录

 创建包

 创建Servlet01类并实现Servlet 

 

package com.minos.servlet;


import jakarta.servlet.*;

import java.io.IOException;

public class Servlet01 implements Servlet {
    @Override
    public void init(ServletConfig servletConfig) throws ServletException {

    }

    @Override
    public ServletConfig getServletConfig() {
        return null;
    }

    @Override
    public void service(ServletRequest servletRequest, ServletResponse servletResponse) throws ServletException, IOException {
        System.out.println("hello servlet");
    }

    @Override
    public String getServletInfo() {
        return null;
    }

    @Override
    public void destroy() {

    }
}

三、配置web.xml

 

<!DOCTYPE web-app PUBLIC
        "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
        "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee
                      https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd"
         version="5.0"
         metadata-complete="false">

<!--<web-app>-->
    <display-name>Archetype Created Web Application</display-name>
    <!--  配置servlet-->
    <servlet>
        <servlet-name>demo01</servlet-name>
        <servlet-class>com.minos.servlet.Servlet01</servlet-class>
    </servlet>
    <!--  配置路径-->
    <servlet-mapping>
        <servlet-name>demo01</servlet-name>
        <url-pattern>/demo01</url-pattern>
    </servlet-mapping>
</web-app>

四、配置启动环境

 如果本地没有安装tomcat，可以安装

https://tomcat.apache.org/

 

 

 按需下载

https://dlcdn.apache.org/tomcat/tomcat-10/v10.1.10/bin/apache-tomcat-10.1.10-windows-x64.zip

解压到特定目录

D:\ProgramFiles\apache-tomcat-10.1.10\bin

 配置环境变量

 IDEA配置tomcat

 配置默认浏览器 、端口

 

 应用上下文配置/

 五、启动应用并测试

 

 访问

http://localhost:8080/demo01

 查看控制台输出