import (
   "crypto/md5"
   "encoding/hex"
   "math/rand"
   "time"
)

//生成隨機字串
func GetRandomString(length int) string{
	str := "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
	bytes := []byte(str)
	result := []byte{}
	r := rand.New(rand.NewSource(time.Now().UnixNano()))
	for i := 0; i < length; i++ {
		result = append(result, bytes[r.Intn(len(bytes))])
	}
	return string(result)
}
 

// 生成32位MD5
func MD5(text string) string{
   ctx := md5.New()
   ctx.Write([]byte(text))
   return hex.EncodeToString(ctx.Sum(nil))
}