springboot2.x從application.yml取數組、List

webUrls:
  gray: 192.168.0.48:8123,192.168.0.49:8123
  prod: 192.168.0.50:8123,192.168.0.51:8123

    @Value("${webUrls.gray}")
    private String[] grayUrls;
    @Value("${webUrls.prod}")
    private String[] prodUrls;
    @Value("${webUrls.gray}")
    private List<String> grayUrls2;


            for(int i=0;i<grayUrls.length;i++){
                log.info("grayUrl:"+grayUrls[i]);
            }
            for(int i=0;i<prodUrls.length;i++){
                log.info("prodUrl:"+prodUrls[i]);
            }
            for(int i=0;i<grayUrls2.size();i++){
                log.info("grayUrl2:"+grayUrls2.get(i));
            }