string.go
func StringMD5Hex(data string) string {
	hash := md5.New()
	hash.Write([]byte(data))
	return fmt.Sprintf("%x", hash.Sum(nil))
}
func StringMD5Hex(data string) string {
	hash := md5.New()
	hash.Write([]byte(data))
	return fmt.Sprintf("%x", hash.Sum(nil))
}
func StringMD5Hex ( data string ) string { hash := md5 . New ( ) hash . Write ( [ ] byte ( data ) ) return fmt . Sprintf ( " " , hash . Sum ( nil ) ) }
// StringMD5Hex returns the hex encoded MD5 hash of data
StringMD5Hex returns the hex encoded MD5 hash of data