java枚舉enum,根據value值獲取key鍵的操作

public enum ZjlxEnum implements IEnum {
  SFZ("1", "居民身份證"),
  XGZM("2", "香港特區護照/身份證明"),
  AMZM("3", "澳門特區護照/身份證明"),
  TWTXZ("4", "臺灣居民來往大陸通行證"),
  JWJZZ("5", "境外永久居住證"),
  HZ("6", "護照"),
  QT("7", "其他"); 
  private String value;
  private String label;   
  public String getValue() {
    return this.value;
  } 
  public String getLabel() {
    return this.label;
  }
}

private String getZjlx(String zjlxCn) {
  Optional<ZjlxEnum> m1 = EnumUtil.getEnumObject(ZjlxEnum.class, e -> e.getLabel().equals(zjlxCn));
  return m1.isPresent() ? m1.get().getValue() : null;
}

public class EnumUtil { 
  private static Map<Class, Object> map = new ConcurrentHashMap<>(); 
  /**
   * 根據條件獲取枚舉對象
   *
   * @param className 枚舉類
   * @param predicate 篩選條件
   * @param <T>
   * @return
   */
  public static <T> Optional<T> getEnumObject(Class<T> className, Predicate<T> predicate) {
    if (!className.isEnum()) {
      return null;
    }
    Object obj = map.get(className);
    T[] ts = null;
    if (obj == null) {
      ts = className.getEnumConstants();
      map.put(className, ts);
    } else {
      ts = (T[]) obj;
    }
    return Arrays.stream(ts).filter(predicate).findAny();
  }
}

public class ColorIndexTest { 
  @SuppressWarnings("resource")
  public static void main(String[] args) {
    // TODO Auto-generated method stub
    HSSFColorPredefined[] allColor = HSSFColorPredefined.values();
    for(int i = 0;i < allColor.length;i++) {
      System.out.println(allColor[i].name() + " == " + allColor[i].ordinal());
    }
  }
}