GO 语言 MD5 四种实现方式

func md5_1(s string) {
	m := md5.New()
	m.Write([]byte (s))
	fmt.Println(hex.EncodeToString(m.Sum(nil)))
}

func md5_2(s string) {
	m := md5.Sum([]byte (s))
	fmt.Println(hex.EncodeToString(m[:]))
}

func md5_3(s string) {
	m := md5.Sum([]byte(s))
	fmt.Printf("%x", m)
	fmt.Println()
}

func md5_4(s string) {
	m := md5.New()
	io.WriteString(m, s)
	fmt.Println(hex.EncodeToString(m.Sum(nil)))
}