将配置项读取到字段上

@Configuration
@Getter
@Setter
public class PropertiesConfig {
    @Value("${qizhan.root}")
    private String root;
    @Value("${qizhan.path}")
    private String path;
}

将配置类自动注入

@Slf4j
@Component
public class PropertiesHelper {
    @Autowired
    public void init(PropertiesConfig config) {
        WebConstants.WEB_ROOT = config.getRoot();
        WebConstants.PATH = config.getPath();
        log.info(WebConstants.WEB_ROOT);
    }
}