枚举

import lombok.Getter;
@Getter
public enum ResultCodeEnum {

    /**
     * 请求成功
     */
    UNKNOWN_ERROR(0, "未知异常"),
    DB_ERROR(1, "数据库异常"),
    SUCCESS(200, "请求成功"),
    FAIL(300, "请求失败"),
    SERVER_ERROR(500, "服务异常"),
    DATA_NOT_EXIST(501, "数据不存在"),
    CURRENT_STATUS_PROHIBITS_OPERATIONS(502, "当前状态不允许此操作"),
    CURRENT_USER_PROHIBITS_OPERATIONS(503, "当前用户不允许此操作"),
    DATE_SPAN_TOO_LARGE(504, "日期跨度过大"),
    DATA_SAVE_FAIL(505, "数据保存失败"),
    USER_NOT_LOGIN(506, "用户未登录"),
    USER_NOT_AUTHORITY(507, "用户无权限"),
    AUTHORIZATION_FAIL(1001, "授权失败"),
    RESOURCE_NOT_ALLOW_EDIT(1002, "该资源不允许编辑"),
    RESOURCE_NOT_ALLOW_DELETE(1003, "该资源不允许删除"),
    REQUEST_ILLEGAL(601, "请求不合法"),
    FILE_UPLOAD_FAIL(701, "文件上传失败"),
    PARAMETER_ERROR(40001, "参数异常"),
    ASSIGN_IS_NOT_WORK_DAY(40002, "未在分配时间范围"),
    USER_NOT_BINDING_AREA(40003, "未设置所属区域"),
    PICK_UP_BLACK_CITY(20001, "异地取件黑名单");

    private int code;
    private String message;

    // 构造方法
    ResultCodeEnum(int code, String message) {
        this.code = code;
        this.message = message;
    }

}

ResultCodeEnum codeEnum = ResultCodeEnum.UNKNOWN_ERROR;
int code = codeEnum.getCode();
String message = codeEnum.getMessage();