BaseEnum<K, V>枚举接口使用法则

//这里的K和V分别是指枚举标识和描述的类型，这里是泛型
public interface BaseEnum {

    /**
     * 获取编码
     *
     * @return 编码
     */
    K code();

    /**
     * 获取描述
     *
     * @return 描述
     */
    V desc();

}

public enum BaseEnums implements BaseEnum {

    SUCCESS("request.success", "请求成功"),

    FAILURE("request.failure", "请求失败"),

    OPERATION_SUCCESS("operation.success", "操作成功"),

    OPERATION_FAILURE("operation.failure", "操作失败"),

    ERROR("system.error", "系统异常"),

    NOT_FOUND("not_found", "请求资源不存在"),

    FORBIDDEN("forbidden", "无权限访问"),

    VERSION_NOT_MATCH("record_not_exists_or_version_not_match", "记录版本不存在或不匹配"),

    PARAMETER_NOT_NULL("parameter_not_be_null", "参数不能为空");

    private String code;

    private String desc;

    private static Map allMap = new HashMap();

    BaseEnums(String code, String desc) {
        this.code = code;
        this.desc = desc;
    }

    static {
        for(BaseEnums enums : BaseEnums.values()){
            allMap.put(enums.code, enums.desc);
        }
    }

    @Override
    public String code() {
        return code;
    }

    @Override
    public String desc() {
        return desc;
    }

    public String desc(String code) {
        return allMap.get(code);
    }

}