1.アプリケーション.propertiesで国際化ファイルを構成するパス

spring.messages.basename=i18n/messages

2.列挙クラスjava

package com.example.d3.enums;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.MessageSource;
import org.springframework.stereotype.Component;

import javax.annotation.PostConstruct;
import java.util.EnumSet;

public enum Level {
	LOW("0", "level.LOW"),
	MEDIUM("1", "level.MEDIUM"),
	HIGH("2", "level.HIGH");

	private String value;
	private String description;

	private Level(String value, String description) {
		this.value = value;
		this.description = description;
	}

	public String getValue() {
		return this.value;
	}

	public String getDescription() {
		return messageSource.getMessage(description, null, description, null);
	}

	private MessageSource messageSource;

	public Level setMessageSource(MessageSource messageSource) {
		this.messageSource = messageSource;
		return this;
	}

	@Component
	public static class EnumValuesInjectionService {

		@Autowired
		private MessageSource messageSource;

		// bean，   。
		@PostConstruct
		public void postConstruct() {

			for (Level level : EnumSet.allOf(Level.class)) {
				level.setMessageSource(messageSource);
			}
		}
	}
}

3.メッセージでpropertiesにテスト情報を追加

level.LOW= 
level.MEDIUM= 
level.HIGH= 

4.テストクラスの作成

package com.example.d3;

import com.example.d3.enums.Level;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@SpringBootTest
@RunWith(SpringRunner.class)
public class EnumTest {
	private static final Logger logger = LoggerFactory.getLogger(EnumTest.class);

	@Test
	public void test() {

		for (Level level : Level.values()) {
			String value = level.getValue();
			String description = level.getDescription();
			logger.info(value + " ==> " + description);
		}
	}
}

5.実行および出力結果

2020-01-16 20:57:33.334  INFO 45386 --- [           main] com.example.d3.EnumTest                  : 0 ==>  
2020-01-16 20:57:33.334  INFO 45386 --- [           main] com.example.d3.EnumTest                  : 1 ==>  
2020-01-16 20:57:33.334  INFO 45386 --- [           main] com.example.d3.EnumTest                  : 2 ==>