package mainimport (	"crypto/md5"	"fmt"	"io"	"strconv"	"time")func main() {	crutime := time.Now().Unix()	fmt.Println("crutime-->", crutime)	h := md5.New()	fmt.Println("h-->", h)	fmt.Println("strconv.FormatInt(crutime, 10)-->", strconv.FormatInt(crutime, 10))	io.WriteString(h, strconv.FormatInt(crutime, 10))	fmt.Println("h-->", h)	token := fmt.Sprintf("%x", h.Sum(nil))	fmt.Println("token--->", token)	fmt.Println(len("8e1a188743c6077110da3c9778183031"))}