go工具集合
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package util
import (
"crypto/sha256"
"fmt"
"io"
"os"
)
// 计算文件的hash
func CalacHash(rfile string) string {
// 获取到真实地址
//
file, err := os.Open(rfile)
if err != nil {
panic(err)
}
defer file.Close()
// initlize hash object
hash := sha256.New()
// write file into hash object
if _, err := io.Copy(hash, file); err != nil {
panic(err)
}
// get hash value
hashBytes := hash.Sum(nil)
//converto to hash string
hastString := fmt.Sprintf("%x", hashBytes)
return hastString
}