1、建立新的工程

package com.hengqin.springbootwebdemo.controller;

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

@Controller
public class HelloController {

    @ResponseBody
    @RequestMapping(
 
"/hello")
    public String hello(){
        return "Helloworld";
    }
}

重新執行，訪問：localhost:8080/webjars/jquery/3.5.1/jquery.js