controller/ArticleController.java

package com.example.firstproject.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;

@Controller ----------------------------- ➊ 컨트롤러 선언

public class ArticleController {

@GetMapping("/articles/new") ------------ ➌ URL 요청 접수
    public String newArticleForm() { ---- ➋ 메서드 생성 및 반환값 작성 
        return "articles/new";
    }

}