Java: SpringBoot配置文件读取-数组

user:
  # 逗号分隔
  countries: China, American, Germany

@Value("${user.countries}")
private String[] countryArray;

user:
  # 数组
  languages:
    - zh
    - en
    - de

package com.example.demo.config;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
import java.util.List;
@Component
@ConfigurationProperties(prefix = "user")
public class LanguageConfig {
    private List<String> languages;
    public List<String> getLanguages() {
        return languages;
    }
    public void setLanguages(List<String> languages) {
        this.languages = languages;
    }
}

@Autowired
private LanguageConfig languageConfig;

package com.example.demo;
import com.example.demo.config.LanguageConfig;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.test.context.SpringBootTest;
import java.util.stream.Stream;
@SpringBootTest
class ApplicationTests {
    @Autowired
    private LanguageConfig languageConfig;
    @Value("${user.countries}")
    private String[] countryArray;
    @Test
    void testLanguageConfig() {
        System.out.println(languageConfig.getLanguages());
        //  [zh, en, de]
        Stream.of(countryArray).forEach(System.out::println);
        // China
        // American
        // Germany
    }
}