C#zip压缩类
- 2019 年 10 月 10 日
- 筆記
改造了网上的代码，可以压缩文件夹、指定文件列表（文件和文件夹的混合列表，需要指定子文件夹下需要压缩的文件），注释很详细不做解释
public class ZipHelper { /// <summary> /// 压缩单个文件 /// </summary> /// <param name="fileToZip">要压缩的文件</param> /// <param name="zipedFile">压缩后的文件</param> /// <param name="compressionLevel">压缩等级</param> /// <param name="blockSize">每次写入大小</param> public static void ZipFile(string fileToZip, string zipedFile, int compressionLevel, int blockSize) { //如果文件没有找到，则报错 if (!System.IO.File.Exists(fileToZip)) { throw new System.IO.FileNotFoundException("指定要压缩的文件: " + fileToZip + " 不存在!"); } using (System.IO.FileStream ZipFile = System.IO.File.Create(zipedFile)) { using (ZipOutputStream ZipStream = new ZipOutputStream(ZipFile)) { using (System.IO.FileStream StreamToZip = new System.IO.FileStream(fileToZip, System.IO.FileMode.Open, System.IO.FileAccess.Read)) { string fileName = fileToZip.Substring(fileToZip.LastIndexOf("\") + 1); ZipEntry ZipEntry = new ZipEntry(fileName); ZipStream.PutNextEntry(ZipEntry); ZipStream.SetLevel(compressionLevel); byte[] buffer = new byte[blockSize]; int sizeRead = 0; try { do { sizeRead = StreamToZip.Read(buffer, 0, buffer.Length); ZipStream.Write(buffer, 0, sizeRead); } while (sizeRead > 0); } catch (System.Exception ex) { throw ex; } StreamToZip.Close(); } ZipStream.Finish(); ZipStream.Close(); } ZipFile.Close(); } } /// <summary> /// 压缩单个文件 /// </summary> /// <param name="fileToZip">要进行压缩的文件名</param> /// <param name="zipedFile">压缩后生成的压缩文件名</param> public static void ZipFile(string fileToZip, string zipedFile) { //如果文件没有找到，则报错 if (!File.Exists(fileToZip)) { throw new System.IO.FileNotFoundException("指定要压缩的文件: " + fileToZip + " 不存在!"); } using (FileStream fs = File.OpenRead(fileToZip)) { byte[] buffer = new byte[fs.Length]; fs.Read(buffer, 0, buffer.Length); fs.Close(); using (FileStream ZipFile = File.Create(zipedFile)) { using (ZipOutputStream ZipStream = new ZipOutputStream(ZipFile)) { string fileName = fileToZip.Substring(fileToZip.LastIndexOf("\") + 1); ZipEntry ZipEntry = new ZipEntry(fileName); ZipStream.PutNextEntry(ZipEntry); ZipStream.SetLevel(5); ZipStream.Write(buffer, 0, buffer.Length); ZipStream.Finish(); ZipStream.Close(); } } } } /// <summary> /// 压缩文件 /// </summary> /// <param name="copyTopath">压缩到哪个路径</param> /// <param name="zipFileName">压缩文件名称</param> public static void ZipFile(List<string> sourceFileNames, string zipFileName) { //压缩文件打包 using (ZipOutputStream s = new ZipOutputStream(File.Create(zipFileName))) { s.SetLevel(9); byte[] buffer = new byte[4096]; foreach (string file in sourceFileNames) { if (Directory.Exists(file))// 先当作目录处理如果存在这个目录就递归Copy该目录下面的文件 { string pPath = ""; pPath += Path.GetFileName(file); pPath += "\"; ZipSetp(file, s, pPath, sourceFileNames); } else // 否则直接压缩文件 { 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(); } } /// <summary> /// 压缩多层目录 /// </summary> /// <param name="strDirectory">待压缩目录</param> /// <param name="zipedFile">压缩后生成的压缩文件名，绝对路径</param> public static void ZipFileDirectory(string strDirectory, string zipedFile) { using (System.IO.FileStream ZipFile = System.IO.File.Create(zipedFile)) { using (ZipOutputStream s = new ZipOutputStream(ZipFile)) { s.SetLevel(9); ZipSetp(strDirectory, s, ""); } } } /// <summary> /// 压缩多层目录 /// </summary> /// <param name="strDirectory">待压缩目录</param> /// <param name="zipedFile">压缩后生成的压缩文件名，绝对路径</param> /// <param name="files">指定要压缩的文件列表(完全路径)</param> public static void ZipFileDirectory(string strDirectory, string zipedFile, List<string> files) { using (System.IO.FileStream ZipFile = System.IO.File.Create(zipedFile)) { using (ZipOutputStream s = new ZipOutputStream(ZipFile)) { s.SetLevel(9); ZipSetp(strDirectory, s, "", files); } } } /// <summary> /// 递归遍历目录 /// </summary> /// <param name="strDirectory">The directory.</param> /// <param name="s">The ZipOutputStream Object.</param> /// <param name="parentPath">The parent path.</param> /// <param name="files">需要压缩的文件</param> private static void ZipSetp(string strDirectory, ZipOutputStream s, string parentPath, List<string> files = null) { if (strDirectory[strDirectory.Length - 1] != Path.DirectorySeparatorChar) { strDirectory += Path.DirectorySeparatorChar; } string[] filenames = Directory.GetFileSystemEntries(strDirectory); byte[] buffer = new byte[4096]; foreach (string file in filenames)// 遍历所有的文件和目录 { if (files != null && !files.Contains(file)) { continue; } if (Directory.Exists(file))// 先当作目录处理如果存在这个目录就递归Copy该目录下面的文件 { string pPath = parentPath; pPath += Path.GetFileName(file); pPath += "\"; ZipSetp(file, s, pPath, files); } else // 否则直接压缩文件 { //打开压缩文件 string fileName = parentPath + Path.GetFileName(file); ZipEntry entry = new ZipEntry(fileName); 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); } } } } /// <summary> /// 解压缩一个 zip 文件。 /// </summary> /// <param name="zipedFile">压缩文件</param> /// <param name="strDirectory">解压目录</param> /// <param name="password">zip 文件的密码。</param> /// <param name="overWrite">是否覆盖已存在的文件。</param> public static void UnZip(string zipedFile, string strDirectory, bool overWrite, string password) { if (strDirectory == "") strDirectory = Directory.GetCurrentDirectory(); if (!strDirectory.EndsWith("\")) strDirectory = strDirectory + "\"; using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipedFile))) { if (password != null) { s.Password = password; } ZipEntry theEntry; while ((theEntry = s.GetNextEntry()) != null) { string directoryName = ""; string pathToZip = ""; pathToZip = theEntry.Name; if (pathToZip != "") directoryName = Path.GetDirectoryName(pathToZip) + "\"; string fileName = Path.GetFileName(pathToZip); Directory.CreateDirectory(strDirectory + directoryName); if (fileName != "") { if ((File.Exists(strDirectory + directoryName + fileName) && overWrite) || (!File.Exists(strDirectory + directoryName + fileName))) { using (FileStream streamWriter = File.Create(strDirectory + directoryName + fileName)) { 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; } streamWriter.Close(); } } } } s.Close(); } } /// <summary> /// 解压缩一个 zip 文件。 /// </summary> /// <param name="zipedFile">压缩文件</param> /// <param name="strDirectory">解压目录</param> /// <param name="overWrite">是否覆盖已存在的文件。</param> public static void UnZip(string zipedFile, string strDirectory, bool overWrite) { UnZip(zipedFile, strDirectory, overWrite, null); } /// <summary> /// 解压缩一个 zip 文件。 /// 覆盖已存在的文件。 /// </summary> /// <param name="zipedFile">压缩文件</param> /// <param name="strDirectory">解压目录</param> public static void UnZip(string zipedFile, string strDirectory) { UnZip(zipedFile, strDirectory, true); } /// <summary> /// 获取压缩文件中指定类型的文件 /// </summary> /// <param name="zipedFile">压缩文件</param> /// <param name="fileExtension">文件类型(.txt|.exe)</param> /// <returns>文件名称列表(包含子目录)</returns> public static List<string> GetFiles(string zipedFile, List<string> fileExtension) { List<string> files = new List<string>(); if (!File.Exists(zipedFile)) { //return files; throw new FileNotFoundException(zipedFile); } using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipedFile))) { ZipEntry theEntry; while ((theEntry = s.GetNextEntry()) != null) { if (theEntry.IsFile) { //Console.WriteLine("Name : {0}", theEntry.Name); if (fileExtension != null) { if (fileExtension.Contains(Path.GetExtension(theEntry.Name))) { files.Add(theEntry.Name); } } else { files.Add(theEntry.Name); } } } s.Close(); } return files; } /// <summary> /// 获取压缩文件中的所有文件 /// </summary> /// <param name="zipedFile">压缩文件</param> /// <returns>文件名称列表(包含子目录)</returns> public static List<string> GetFiles(string zipedFile) { return GetFiles(zipedFile, null); } }
