@Slf4j
public class StrParser {


  public static List<String> strToStrList(String messages) {
    List<String> rtList = Lists.newArrayList();
    if (StringUtils.isEmpty(messages)) {
      return rtList;
    }
    rtList = Splitter.on(",").splitToList(messages);
    return rtList;
  }

  public static List<Long> strToNumList(String messages) {
    if (StringUtils.isEmpty(messages)) {
      return null;
    }
    List<Long> idList = Lists.newArrayList();
    try {
      idList = Splitter.on(",").trimResults().splitToList(messages).stream()
          .map(s -> Long.parseLong(s.trim())).collect(
              Collectors.toList());
    } catch (Exception e) {
      log.error("用户编号格式传递错误 ids {}", messages);
    }
    return idList;
  }

//  public static void main(String[] args) {
//    System.out.println(strToStrList(null));
//    System.out.println(strToStrList(""));
//    System.out.println(strToStrList(",ss,df").size());
//    System.out.println(strToNumList("111,222"));
//  }
}
使用方式: