首先建立一个简单的meaven项目
导入依赖
<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>
建立一个Moudle：springmvc-01-servlet ， 添加Web app的支持！
在子项目中继续导入依赖（可以省略）
<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>
编写一个Servlet类，用来处理用户的请求
package com.kuang.servlet;
//实现Servlet接口
@WebServlet('/user')
public class HelloServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
//取得参数
String method = req.getParameter("method");
if (method.equals("add")){
req.getSession().setAttribute("msg","执行了add方法");
}
if (method.equals("delete")){
req.getSession().setAttribute("msg","执行了delete方法");
}
//业务逻辑
//视图跳转
req.getRequestDispatcher("/WEB-INF/jsp/hello.jsp").forward(req,resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doGet(req,resp);
}
}
编写Hello.jsp，在WEB-INF目录下新建一个jsp的文件夹，新建hello.jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Kuangshen</title>
</head>
<body>
${msg}
</body>
</html>
来源：CSDN
作者：小红帽与灰太狼
链接：https://blog.csdn.net/weixin_42277719/article/details/104589631