直接创建个普通的maven项目注意不用选任何骨架，默认一直下一步就可以，然后把第一个项目的src删除，让他作为父工程，紧接着在父工程下也是同样方法创建一个maven作为子工程，这个子工程用来写我们的web：
第一步： 把子工程maven项目转变为web项目： 第二步：在父工程导入依赖
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.zsp</groupId> <artifactId>SpringMVC</artifactId> <packaging>pom</packaging> <version>1.0-SNAPSHOT</version> <modules> <module>springmvc_01servlet</module> </modules> <!-- 依赖--> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>5.1.9.RELEASE</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.2</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> </dependencies> </project>子工程的pom文件：其实可以从父工程继承的，但是这里还是写下因为是回顾
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <parent> <artifactId>SpringMVC</artifactId> <groupId>com.zsp</groupId> <version>1.0-SNAPSHOT</version> </parent> <modelVersion>4.0.0</modelVersion> <artifactId>springmvc_01servlet</artifactId> <dependencies> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.2</version> </dependency> </dependencies> </project>这是我写的servlet程序：
package cn.zsp; 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 { @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { //取得参数 String action = req.getParameter("action"); if (action.equals("add")){ req.getSession().setAttribute("msg","执行了add方法"); } if (action.equals("delete")){ req.getSession().setAttribute("msg","执行了delete方法"); } req.getRequestDispatcher("/WEB-INF/hellow.jsp").forward(req,resp); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { doGet(req,resp); } }这是转发得到的jsp文件：”
<%-- Created by IntelliJ IDEA. User: Administrator Date: 2020/9/4 Time: 11:15 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> ${msg} </body> </html>