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public static class ZipFileHelper { #region 加压解压方法 /// <summary> /// 功能:压缩文件(暂时只压缩文件夹下一级目录中的文件,文件夹及其子级被忽略) /// </summary> /// <param name="dirPath">被压缩的文件夹夹路径</param> /// <param name="zipFilePath">生成压缩文件的路径,为空则默认与被压缩文件夹同一级目录,名称为:文件夹名+.zip</param> /// <param name="err">出错信息</param> /// <returns>是否压缩成功</returns> public static bool ZipFile(string dirPath, string zipFilePath, out string err) { err = ""; if (dirPath == string.Empty) { err = "要压缩的文件夹不能为空!"; return false; } if (!Directory.Exists(dirPath)) { err = "要压缩的文件夹不存在!"; return false; } //压缩文件名为空时使用文件夹名+.zip if (zipFilePath == string.Empty) { if (dirPath.EndsWith("\\")) { dirPath = dirPath.Substring(0, dirPath.Length - 1); } zipFilePath = dirPath + ".zip"; } try { string[] filenames = Directory.GetFiles(dirPath); using (ZipOutputStream s = new ZipOutputStream(File.Create(zipFilePath))) { s.SetLevel(9); byte[] buffer = new byte[4096]; foreach (string file in filenames) { ZipEntry entry = new ZipEntry(Path.GetFileName(file)); entry.DateTime = DateTime.Now; s.PutNextEntry(entry); using (FileStream fs = File.OpenRead(file)) { int sourceBytes; do { sourceBytes = fs.Read(buffer, 0, buffer.Length); s.Write(buffer, 0, sourceBytes); } while (sourceBytes > 0); } } s.Finish(); s.Close(); } } catch (Exception ex) { err = ex.Message; return false; } return true; } /// <summary> /// 功能:解压zip格式的文件。 /// </summary> /// <param name="zipFilePath">压缩文件路径</param> /// <param name="unZipDir">解压文件存放路径,为空时默认与压缩文件同一级目录下,跟压缩文件同名的文件夹</param> /// <param name="err">出错信息</param> /// <returns>解压是否成功</returns> public static bool UnZipFile(string zipFilePath, string unZipDir, out string err) { err = ""; if (zipFilePath == string.Empty) { err = "压缩文件不能为空!"; return false; } if (!File.Exists(zipFilePath)) { err = "压缩文件不存在!"; return false; } //解压文件夹为空时默认与压缩文件同一级目录下,跟压缩文件同名的文件夹 if (unZipDir == string.Empty) unZipDir = zipFilePath.Replace(Path.GetFileName(zipFilePath), Path.GetFileNameWithoutExtension(zipFilePath)); if (!unZipDir.EndsWith("\\")) unZipDir += "\\"; if (!Directory.Exists(unZipDir)) Directory.CreateDirectory(unZipDir); try { using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipFilePath))) { ZipEntry theEntry; while ((theEntry = s.GetNextEntry()) != null) { string directoryName = Path.GetDirectoryName(theEntry.Name); string fileName = Path.GetFileName(theEntry.Name); if (directoryName.Length > 0) { Directory.CreateDirectory(unZipDir + directoryName); } if (!directoryName.EndsWith("\\")) directoryName += "\\"; if (fileName != String.Empty) { using (FileStream streamWriter = File.Create(unZipDir + theEntry.Name)) { int size = 2048; byte[] data = new byte[2048]; while (true) { size = s.Read(data, 0, data.Length); if (size > 0) { streamWriter.Write(data, 0, size); } else { break; } } } } }//while } } catch (Exception ex) { err = ex.Message; return false; } return true; }//解压结束 #endregion }
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