int,err:=strconv.Atoi(string)
int64, err := strconv.ParseInt(string, 10, 64)
string:=strconv.Itoa(int)
string:=strconv.FormatInt(int64,10)
【go】string、int、int64互相转换
原文：https://www.cnblogs.com/E1even/p/12964887.html
