golang的zip压缩加密多文件完整例子

资源库：https://github.com/mzky/zip

package main

import (
    "bytes"
    "fmt"
    "io"
    "os"
    "path/filepath"

    "github.com/mzky/zip"
)

func main() {
    var array []string
    array = append(array, "/mnt/k/v")
    array = append(array, "/mnt/a/b")
    err := Zip("/mnt/demo.zip", "1", array)
    if err != nil {
        fmt.Println(err)
    }
    // err = UnZip("/mnt/demo.zip", "1", "./") //解压相对路径
    err = UnZip("/mnt/demo.zip", "1", "/")
    if err != nil {
        fmt.Println(err)
    }

}

func IsZip(zipPath string) bool {
    f, err := os.Open(zipPath)
    if err != nil {
        return false
    }
    defer f.Close()

    buf := make([]byte, 4)
    if n, err := f.Read(buf); err != nil || n < 4 {
        return false
    }

    return bytes.Equal(buf, []byte("PK\x03\x04"))
}

// password值可以为空""
func Zip(zipPath, password string, fileList []string) error {
    if len(fileList) < 1 {
        return fmt.Errorf("将要压缩的文件列表不能为空")
    }
    fz, err := os.Create(zipPath)
    if err != nil {
        return err
    }
    zw := zip.NewWriter(fz)
    defer zw.Close()

    for _, fileName := range fileList {
        fr, err := os.Open(fileName)
        if err != nil {
            return err
        }

        // 写入文件的头信息
        var w io.Writer
        if password != "" {
            w, err = zw.Encrypt(fileName, password, zip.AES256Encryption)
        } else {
            w, err = zw.Create(fileName)
        }

        if err != nil {
            return err
        }

        // 写入文件内容
        _, err = io.Copy(w, fr)
        if err != nil {
            return err
        }
    }
    return zw.Flush()
}

// password值可以为空""
// 当decompressPath值为"./"时，解压到相对路径
func UnZip(zipPath, password, decompressPath string) error {
    if !IsZip(zipPath) {
        return fmt.Errorf("压缩文件格式不正确或已损坏")
    }
    r, err := zip.OpenReader(zipPath)
    if err != nil {
        return err
    }
    defer r.Close()

    for _, f := range r.File {
        if password != "" {
            if f.IsEncrypted() {
                f.SetPassword(password)
            } else {
                return errors.New("must be encrypted")
            }
        }
        fp := filepath.Join(decompressPath, f.Name)
        dir, _ := filepath.Split(fp)
        err = os.MkdirAll(dir, os.ModePerm)
        if err != nil {
            return err
        }

        w, err := os.Create(fp)
        if nil != err {
            return err
        }

        fr, err := f.Open()
        if err != nil {
            return err
        }

        _, err = io.Copy(w, fr)
        if err != nil {
            return err
        }
        w.Close()
    }
    return nil
}