枚举-根据value获取枚举

public enum MallType {
  TAOBAO("1001","淘宝商城"),
  TMALL("1002","天猫商城"),
  ;

  private final String caption;
  private final String code;

  MallType(String code,String caption) {
    this.caption = caption;
    this.code = code;
  }


  public String caption() {
    return this.caption;
  }
  public String code() {
    return this.code;
  }

  public static MallType byCode(String code) {
    MallType[] mallTypeEnums = values();
    for (MallType mallTypeEnum : mallTypeEnums) {
      if (mallTypeEnum.code().equals(code)) {
        return mallTypeEnum;
      }
    }
    return null;
  }

}