go 压缩解压zip文件源码示例

func Zip(dest string, paths ...string) error {
 zfile, err := os.Create(dest)
 if err != nil {
  return err
 }
 defer zfile.Close()
 zipWriter := zip.NewWriter(zfile)
 defer zipWriter.Close()
 for _, src := range paths {
  // remove the trailing path sepeartor if it is a directory
  src := strings.TrimSuffix(src, string(os.PathSeparator))
  err = filepath.Walk(src, func(path string, info os.FileInfo, err error) error {
if err != nil {
 return err
}
// create local file header
header, err := zip.FileInfoHeader(info)
if err != nil {
 return err
}
// set compression method to deflate
header.Method = zip.Deflate
// set relative path of file in zip archive
header.Name, err = filepath.Rel(filepath.Dir(src), path)
if err != nil {
 return err
}
if info.IsDir() {
 header.Name += string(os.PathSeparator)
}
// create writer for writing header
headerWriter, err := zipWriter.CreateHeader(header)
if err != nil {
 return err
}
if info.IsDir() {
 return nil
}
f, err := os.Open(path)
if err != nil {
 return err
}
defer f.Close()
_, err = io.Copy(headerWriter, f)
return err
  })
  if err != nil {
return err
  }
 }
 return nil
}

func Unzip(src string, dest string) error {
 reader, err := zip.OpenReader(src)
 if err != nil {
  return err
 }
 defer reader.Close()
 for _, file := range reader.File {
  filePath := path.Join(dest, file.Name)
  if file.FileInfo().IsDir() {
os.MkdirAll(filePath, os.ModePerm)
  } else {
if err = os.MkdirAll(filepath.Dir(filePath), os.ModePerm); err != nil {
 return err
}
inFile, err := file.Open()
if err != nil {
 return err
}
defer inFile.Close()
outFile, err := os.OpenFile(filePath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, file.Mode())
if err != nil {
 return err
}
defer outFile.Close()
_, err = io.Copy(outFile, inFile)
if err != nil {
 return err
}
  }
 }
 return nil
}