安装idea

File -> New Project

选择依赖

创建controller文件

输入controller类名

输入代码

运行项目

访问

localhost:8080/hello/boot

package com.example.demo;import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;@RestController
@RequestMapping("/hello")
public class HelloController {@RequestMapping("/boot")public String helloBoot() {return "Hello Spring Boot hha";}}

参考
https://www.cnblogs.com/zyip/p/17291390.html