Spring MVC入门案例！！！

 1.先加入架包（我这里使用了tomcat插件，你也可以直接按照原本的方式使用tomcat）

war

    
        8
        8
        UTF-8
    
    
        
            org.springframework
            spring-context
            5.1.8.RELEASE
        
        
            org.springframework
            spring-web
            5.1.8.RELEASE
        
        
            org.springframework
            spring-webmvc
            5.1.8.RELEASE
        

        
            javax.servlet
            servlet-api
            2.5
            provided
        

        
            javax.servlet.jsp
            jsp-api
            2.0
            provided
        
    
    
        
            
            
                org.apache.tomcat.maven
                tomcat7-maven-plugin
                2.2
                
                    
                    8080
                    
                    /
                
            
        
    

 2.将创建的maven项目添加web工程(不会的看这里。。。)

idea如何建立web项目？？？-CSDN博客

 3.web.xml

    
        dispatcherServlet
        org.springframework.web.servlet.DispatcherServlet
        
            contextConfigLocation
            classpath:springmvc.xml
        
        2
    
    
        dispatcherServlet
        /
    

4.springmvc.xml

5.创建页面

index.jsp:

<%--
  Created by IntelliJ IDEA.
  User: admin
  Date: 2024/1/8
  Time: 21:40
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>

  
    
  
  
  hello
  

success.jsp

<%--
  Created by IntelliJ IDEA.
  User: admin
  Date: 2024/1/8
  Time: 21:47
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    


        ${msg}

6.HelloController:

/*
 * Copyright (c) 2020, 2024,  All rights reserved.
 *
 */
package com.by.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

/**
 * 
Project: SpringMVC - HelloController
 * 
Powered by scl On 2024-01-08 21:41:26
 * 
描述：

 *
 * @author 孙臣龙 [[email protected]]
 * @version 1.0
 * @since 17
 */
@Controller
public class HelloController {


    @RequestMapping("/hello")
    public ModelAndView show(){
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.addObject("msg","欢迎你");
        modelAndView.setViewName("success");
        return  modelAndView;
    }
}