application.yml

server:
  port: 8081

sample:
  message: Hello, Application Yaml!

SpringBootSample.java

///usr/bin/env jbang "$0" "$@" ; exit $?

package api;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

//DEPS org.springframework.boot:spring-boot-starter-web:3.5.0
//FILES application.yml
//REPOS central,jitpack,google


@SpringBootApplication
@RestController
public class SpringBootSample {

    @Value("${sample.message}")
    private String message;

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

    /**
     * 固定メッセージを返却する.
     */
    @GetMapping("/hello")
    public String hello() {
        return "Hello, World!";
    }

    /**
     * URLパスで指定された文字列でメッセージを置換して返却する.
     */
    @GetMapping("/hello/{name}")
    public String hello(@PathVariable String name) {
        return "Hello, {name}!".replace("{name}", name);
    }
    
    /**
     * application.ymlのメッセージを表示する
     */
    @GetMapping("/hello/message")
    public String message() {
        return message;
    }
}