TCP协议传输文件夹之压缩

public class ZipClass { ///  <summary> /// 所有文件缓存 ///  </summary> List <string> files = new List <string>();   ///  <summary> /// 所有空目录缓存 ///  </summary> List <string> paths = new List <string>();     ///  <summary> /// 压缩目录（包括子目录及所有文件） ///  </summary> ///  <param name="rootPath">要压缩的根目录 </param> ///  <param name="destinationPath">保存路径 </param> ///  <param name="compressLevel">压缩程度，范围0-9，数值越大，压缩程序越高 </param> public void ZipFileFromDirectory(string rootPath, string destinationPath, int compressLevel){ GetAllDirectories(rootPath);   /* while (rootPath.LastIndexOf("\\") + 1 == rootPath.Length)//检查路径是否以"\"结尾 {   rootPath = rootPath.Substring(0, rootPath.Length - 1);//如果是则去掉末尾的"\"   } */ //string rootMark = rootPath.Substring(0, rootPath.LastIndexOf("\\") + 1);//得到当前路径的位置，以备压缩时将所压缩内容转变成相对路径。string rootMark = rootPath + "\\";//得到当前路径的位置，以备压缩时将所压缩内容转变成相对路径。 Crc32 crc = new Crc32(); ZipOutputStream outPutStream = new ZipOutputStream(File.Create(destinationPath));outPutStream.SetLevel(compressLevel); // 0 - store only to 9 - means best compressionforeach (string file in files) { FileStream fileStream = File.OpenRead(file);//打开压缩文件 byte[] buffer = new byte[fileStream.Length]; fileStream.Read(buffer, 0, buffer.Length); ZipEntry entry = new ZipEntry(file.Replace(rootMark, string.Empty)); entry.DateTime = DateTime.Now; // set Size and the crc, because the information // about the size and crc should be stored in the header // if it is not set it is automatically written in the footer. // (in this case size == crc == -1 in the header) // Some ZIP programs have problems with zip files that don't store // the size and crc in the header. entry.Size = fileStream.Length; fileStream.Close(); crc.Reset(); crc.Update(buffer); entry.Crc = crc.Value; outPutStream.PutNextEntry(entry); outPutStream.Write(buffer, 0, buffer.Length); }   this.files.Clear();   foreach (string emptyPath in paths) { ZipEntry entry = new ZipEntry(emptyPath.Replace(rootMark, string.Empty) + "/"); outPutStream.PutNextEntry(entry); }   this.paths.Clear(); outPutStream.Finish(); outPutStream.Close(); GC.Collect(); }   ///  <summary> /// 取得目录下所有文件及文件夹，分别存入files及paths ///  </summary> ///  <param name="rootPath">根目录 </param> private void GetAllDirectories(string rootPath) { string[] subPaths = Directory.GetDirectories(rootPath);//得到所有子目录 foreach (string path in subPaths) { GetAllDirectories(path);//对每一个字目录做与根目录相同的操作：即找到子目录并将当前目录的文件名存入List } string[] files = Directory.GetFiles(rootPath); foreach (string file in files) { this.files.Add(file);//将当前目录中的所有文件全名存入文件List } if (subPaths.Length == files.Length && files.Length == 0)//如果是空目录 { this.paths.Add(rootPath);//记录空目录 } }   ///  <summary> /// 解压缩文件(压缩文件中含有子目录) ///  </summary> ///  <param name="zipfilepath">待解压缩的文件路径 </param> ///  <param name="unzippath">解压缩到指定目录 </param> ///  <returns>解压后的文件列表 </returns> public List <string> UnZip(string zipfilepath, string unzippath) { //解压出来的文件列表 List <string> unzipFiles = new List <string>();   //检查输出目录是否以“\\”结尾 if (unzippath.EndsWith("\\") == false || unzippath.EndsWith(":\\") == false) { unzippath += "\\"; }   ZipInputStream s = new ZipInputStream(File.OpenRead(zipfilepath)); ZipEntry theEntry; while ((theEntry = s.GetNextEntry()) != null) { string directoryName = Path.GetDirectoryName(unzippath); string fileName = Path.GetFileName(theEntry.Name);   //生成解压目录【用户解压到硬盘根目录时，不需要创建】 if (!string.IsNullOrEmpty(directoryName)) { Directory.CreateDirectory(directoryName); }   if (fileName != String.Empty) { //如果文件的压缩后大小为0那么说明这个文件是空的,因此不需要进行读出写入 if (theEntry.CompressedSize == 0) break; //解压文件到指定的目录 directoryName = Path.GetDirectoryName(unzippath + theEntry.Name); //建立下面的目录和子目录 Directory.CreateDirectory(directoryName);   //记录导出的文件 unzipFiles.Add(unzippath + theEntry.Name);   FileStream streamWriter = File.Create(unzippath + 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; } } streamWriter.Close(); } } s.Close(); GC.Collect(); return unzipFiles; } }