推送

go.mod

@@ -0,0 +1,3 @@
+module github.com/longxiaoLX/goutils
+
+go 1.20

hash/md5.go

@@ -0,0 +1,30 @@
+package hash
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+	"fmt"
+	"io"
+	"os"
+)
+
+// get file md5
+func FileMd5(filename string) (string, error) {
+	file, err := os.Open(filename)
+	if err != nil {
+		return "", fmt.Errorf("md5.go hash.FileMd5 os open error %v", err)
+	}
+	h := md5.New()
+	_, err = io.Copy(h, file)
+	if err != nil {
+		return "", fmt.Errorf("md5.go hash.FileMd5 io copy error %v", err)
+	}
+	return hex.EncodeToString(h.Sum(nil)), nil
+}
+
+// get string md5
+func StringMd5(s string) string {
+	md5 := md5.New()
+	md5.Write([]byte(s))
+	return hex.EncodeToString(md5.Sum(nil))
+}