【SpringBoot】初始化 SpringBoot 项目

1. 创建 SpringBoot 工程

2. 定义请求处理类

package com.itheima.controller;
import org.springframework.web.bind.annotation.*;

@RestController
public class HelloController {
    @RequestMapping("/hello")
    public String hello(){
        System.out.println("Hello World ~");
        return "Hello World ~";
    }
}