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