1. fmt.Printf("%v", ret1)
    1. 总结了golang中字符串和各种int类型之间的相互转换方式:
    2. string转成int
    3. int, err := strconv.Atoi(string)
    4. string转成int64
    5. int64, err := strconv.ParseInt(string, 10, 64)
    6. int转成string
    7. string := strconv.Itoa(int)
    8. int64转成string
    9. string := strconv.FormatInt(int64,10)
    10. 以备查询

    https://lan6193.blog.csdn.net/article/details/100172848