Null 值转换成 Int 类型值时 panic ​

// CFloat64 converts and returns <v> as float64
func (v Any) CFloat64() float64 {

	if v.value == nil {
		return 0
	}

	value, ok := v.value.(float64)
	if ok {
		return value
	}

	if v.IsString() && v.String() == "" {
		return 0
	}

	value, err := strconv.ParseFloat(fmt.Sprintf("%v", v.value), 64)
	if err != nil {
		panic(err.Error()) //panic
	}
	return value
}