golang 使用时间通过md5生成token

package main  
 
import (  
    "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"))  
}