[alibaba/fastjson]SpringMVC 中 fastjson请求参数Integer to Enum的处理疑问 (・∀・)

@ApiOperation(value="短信验证")
@RequestMapping(value = "vailSms", method = RequestMethod.POST)
public UserSmsTokenVM vailAutoLogin(@Valid @RequestBody VailSmsParm parm)
 {
     // 业务逻辑...
}

@Data
public class VailSmsParm {

    @ApiModelProperty(value = "国家地区代码",required = true)
    @NotBlank(message = "国家地区代码不能为空")
    @Pattern(regexp = "^[1-9]\\d*$",message = "国家地区代码格式不正确")
    @JSONField(format="trim")
    private String areaCode;

    @ApiModelProperty(value = "手机号码",required = true)
    @NotBlank(message = "手机号码不能为空")
    @Pattern(regexp = "^[1-9]\\d*$", message = "手机号码格式不正确")
    @JSONField(format="trim")
    private String phone;

    @ApiModelProperty(value = "验证码",required = true)
    @NotNull(message = "验证码不能为空")
    @Pattern(regexp = "^[1-9]\\d*$",message = "验证码格式不正确") 
    @JSONField(format="trim")
    private String code;

    @ApiModelProperty(value = "操作类型,默认为自动登录/注册")
    private RequestSmsType type = RequestSmsType.AutoLogin;

}

@Getter
public enum RequestSmsType implements IntegerEnum {

    AutoLogin(99,"自动登录/注册"),
    RecoverPwd(1,"密码找回");

    private Integer code;
    private String desc;

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

IntegerEnum 关系

public interface IntegerEnum extends IEnum<Integer> {
}

public interface IEnum<T> extends com.alibaba.fastjson.serializer.JSONSerializable{
    T getCode();

    String getDesc();

    default void write(JSONSerializer jsonSerializer, Object o, Type t, int i) {
        jsonSerializer.write(this.getCode());
    }
}

使用String to Enum是没问题的,但使用Integer to Enum时候出错， 但如果想处理Integer to Enum类型有什么方法或扩展点？

{
  "areaCode": "86",
  "phone": "13800138000",
  "type": 99
}

JSON parse error: parse enum com.demo.webapi2.model.enums.RequestSmsType error, value : 99; nested exception is com.alibaba.fastjson.JSONException: parse enum com.demo.webapi2.model.enums.RequestSmsType error, value : 99