一、目录结构

二、HelloWorldSpringbootApplication

package com.bigdata.learn;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;


@SpringBootApplication
public class HelloWorldSpringbootApplication {
    public static void main(String[] args) {
        SpringApplication.run(HelloWorldSpringbootApplication.class,args);
    }
}

三、HelloWorldController

package com.bigdata.learn.controller;


import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloWorldController {

    @RequestMapping("/hello")
    public String hello(String name){
        return "hello springboot";
    }
}

四、运行程序