go語言練習：檔案雜湊

標籤：fail   div   encoding   pac   import   語言   str   ==   nil   

package mainimport ("crypto/sha256""encoding/hex""fmt""io""os")func gethash(path string) (hash string) {file, err := os.Open(path)if err == nil {h_ob := sha256.New()_, err := io.Copy(h_ob, file)if err == nil {hash := h_ob.Sum(nil)hashvalue := hex.EncodeToString(hash)return hashvalue} else {return "something wrong when use sha256 interface..."}} else {fmt.Printf("failed to open %s\n", path)}defer file.Close()return}func main() {path := "test"//path:="md5.go"hash := gethash(path)fmt.Printf("%s hash: %s", path, hash)}//test hash: 599593e4bd8f877acf8f00805e52eb0ffac4c662bc65349bf9eb3e3c9871a2bb

　　

go語言練習：檔案雜湊