1. vue3构建

     构建命令 npm run build， 构建的结果在disc目录：

2. springboot集成

   2.1 拷贝vue3构建结果到springboot resources/static目录

2.2 springboot pom依赖

添加thymeleaf依赖

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--thymeleaf-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

2.3 application.yml新增thymeleaf配置

server:
  port: 8081

spring:
  # 打成jar包必须添加如下配置才能找到页面
  thymeleaf:
    mode: HTML
    cache: false
    prefix: classpath:/static

2.4 新增后台页面controller

package com.spring.test.demo.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;

/**
 * 页面跳转控制器
 */
@Controller
public class PageController {
    //后台页面
    @RequestMapping("/{backPage}")
    public String backPage(@PathVariable String backPage) {
        return "/" + backPage;
    }
}

2.5 运行springboot并访问后台页面

    访问后台页面： http://localhost:8081/index