文件压缩与解压
1.文件压缩事件
private void button1_Click(object sender, EventArgs e) { string[] FileProperties = new string[2]; FileProperties[0] = @"F:\sssd\";//待压缩文件目录 FileProperties[1] = @"F:\sssd\\三国人物.zip"; //压缩后的目标文件 ZipClass Zc = new ZipClass(); Zc.ZipFileMain(FileProperties); ZipClass.Zip(FileProperties[0], FileProperties[1]); }
2.文件解压事件
private void button2_Click(object sender, EventArgs e) { string[] FileProperties = new string[2]; FileProperties[0] = @"F:\sssd\\三国人物.zip";//待解压的文件 FileProperties[1] = @"F:\sssd\";//解压后放置的目标目录 UnZipClass UnZc = new UnZipClass(); UnZc.UnZip(FileProperties); }
3.ZipClass.cs（处理压缩文件类）
using System; using System.Collections.Generic; using System.Linq; using System.Text; using ICSharpCode.SharpZipLib.Zip; using System.IO; using ICSharpCode.SharpZipLib.Checksums; using System.Net.Mail; using System.Net; namespace 压缩和解压缩 { public class ZipClass { public 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("The specified file " + FileToZip + " could not be found. Zipping aborderd"); } System.IO.FileStream StreamToZip = new System.IO.FileStream(FileToZip, System.IO.FileMode.Open, System.IO.FileAccess.Read); System.IO.FileStream ZipFile = System.IO.File.Create(ZipedFile); ZipOutputStream ZipStream = new ZipOutputStream(ZipFile); ZipEntry ZipEntry = new ZipEntry("ZippedFile"); ZipStream.PutNextEntry(ZipEntry); ZipStream.SetLevel(CompressionLevel); byte[] buffer = new byte[BlockSize]; System.Int32 size = StreamToZip.Read(buffer, 0, buffer.Length); ZipStream.Write(buffer, 0, size); try { while (size < StreamToZip.Length) { int sizeRead = StreamToZip.Read(buffer, 0, buffer.Length); ZipStream.Write(buffer, 0, sizeRead); size += sizeRead; } } catch (System.Exception ex) { throw ex; } ZipStream.Finish(); ZipStream.Close(); StreamToZip.Close(); } public void ZipFileMain(string[] args) { string[] filenames = Directory.GetFiles(args[0]); Crc32 crc = new Crc32(); ZipOutputStream s = new ZipOutputStream(File.Create(args[1])); s.SetLevel(6); // 0 - store only to 9 - means best compression foreach (string file in filenames) { //打开压缩文件 FileStream fs = File.OpenRead(file); byte[] buffer = new byte[fs.Length]; fs.Read(buffer, 0, buffer.Length); ZipEntry entry = new ZipEntry(file); 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 = fs.Length; fs.Close(); crc.Reset(); crc.Update(buffer); entry.Crc = crc.Value; s.PutNextEntry(entry); s.Write(buffer, 0, buffer.Length); } s.Finish(); s.Close(); } /**/ /// <summary> /// 递归压缩文件夹方法 /// </summary> /// <param name="FolderToZip"></param> /// <param name="s"></param> /// <param name="ParentFolderName"></param> private static bool ZipFileDictory(string FolderToZip, ZipOutputStream s, string ParentFolderName) { bool res = true; string[] folders, filenames; ZipEntry entry = null; FileStream fs = null; Crc32 crc = new Crc32(); try { //创建当前文件夹 entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/")); //加上 “/” 才会当成是文件夹创建 s.PutNextEntry(entry); s.Flush(); //先压缩文件，再递归压缩文件夹 filenames = Directory.GetFiles(FolderToZip); foreach (string file in filenames) { //打开压缩文件 fs = File.OpenRead(file); byte[] buffer = new byte[fs.Length]; fs.Read(buffer, 0, buffer.Length); entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/" + Path.GetFileName(file))); entry.DateTime = DateTime.Now; entry.Size = fs.Length; fs.Close(); crc.Reset(); crc.Update(buffer); entry.Crc = crc.Value; s.PutNextEntry(entry); s.Write(buffer, 0, buffer.Length); } } catch { res = false; } finally { if (fs != null) { fs.Close(); fs = null; } if (entry != null) { entry = null; } GC.Collect(); GC.Collect(); } folders = Directory.GetDirectories(FolderToZip); foreach (string folder in folders) { if (!ZipFileDictory(folder, s, Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip)))) { return false; } } return res; } /**/ /// <summary> /// 压缩目录 /// </summary> /// <param name="FolderToZip">待压缩的文件夹，全路径格式</param> /// <param name="ZipedFile">压缩后的文件名，全路径格式</param> /// <returns></returns> private static bool ZipFileDictory(string FolderToZip, string ZipedFile) { bool res; if (!Directory.Exists(FolderToZip)) { return false; } ZipOutputStream s = new ZipOutputStream(File.Create(ZipedFile)); s.SetLevel(6); //s.Password = Password; res = ZipFileDictory(FolderToZip, s, ""); s.Finish(); s.Close(); return res; } /**/ /// <summary> /// 压缩文件 /// </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> /// <returns></returns> private static bool 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!"); } //FileStream fs = null; FileStream ZipFile = null; ZipOutputStream ZipStream = null; ZipEntry ZipEntry = null; bool res = true; try { ZipFile = File.OpenRead(FileToZip); byte[] buffer = new byte[ZipFile.Length]; ZipFile.Read(buffer, 0, buffer.Length); ZipFile.Close(); ZipFile = File.Create(ZipedFile); ZipStream = new ZipOutputStream(ZipFile); // ZipStream.Password = Password; ZipEntry = new ZipEntry(Path.GetFileName(FileToZip)); ZipStream.PutNextEntry(ZipEntry); ZipStream.SetLevel(6); ZipStream.Write(buffer, 0, buffer.Length); } catch { res = false; } finally { if (ZipEntry != null) { ZipEntry = null; } if (ZipStream != null) { ZipStream.Finish(); ZipStream.Close(); } if (ZipFile != null) { ZipFile.Close(); ZipFile = null; } GC.Collect(); GC.Collect(); } return res; } /**/ /// <summary> /// 压缩文件 和 文件夹 /// </summary> /// <param name="FileToZip">待压缩的文件或文件夹，全路径格式</param> /// <param name="ZipedFile">压缩后生成的压缩文件名，全路径格式</param> /// <returns></returns> public static bool Zip(String FileToZip, String ZipedFile) { if (Directory.Exists(FileToZip)) { return ZipFileDictory(FileToZip, ZipedFile); } else if (File.Exists(FileToZip)) { return ZipFile(FileToZip, ZipedFile); } else { return false; } } } }
4.UnZipClass.cs（处理解压的文件类）
using System; using System.Collections.Generic; using System.Linq; using System.Text; using ICSharpCode.SharpZipLib.Zip; using System.IO; namespace 压缩和解压缩 { public class UnZipClass { public void UnZip(string[] args) { ZipInputStream s = new ZipInputStream(File.OpenRead(args[0])); ZipEntry theEntry; while ((theEntry = s.GetNextEntry()) != null) { string directoryName = Path.GetDirectoryName(args[1]); string fileName = Path.GetFileName(theEntry.Name); //生成解压目录 Directory.CreateDirectory(directoryName); if (fileName != String.Empty) { //解压文件到指定的目录 FileStream streamWriter = File.Create(args[1] + 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> /// 解压功能(解压压缩文件到指定目录) /// </summary> /// <param name="FileToUpZip">待解压的文件</param> /// <param name="ZipedFolder">指定解压目标目录</param> public static void UnZip(string FileToUpZip, string ZipedFolder) { if (!File.Exists(FileToUpZip)) { return; } if (!Directory.Exists(ZipedFolder)) { Directory.CreateDirectory(ZipedFolder); } ZipInputStream s = null; ZipEntry theEntry = null; string fileName; FileStream streamWriter = null; try { s = new ZipInputStream(File.OpenRead(FileToUpZip)); // s.Password = Password; while ((theEntry = s.GetNextEntry()) != null) { if (theEntry.Name != String.Empty) { fileName = Path.Combine(ZipedFolder, theEntry.Name); /**/ ///判断文件路径是否是文件夹 if (fileName.EndsWith("/") || fileName.EndsWith("\\")) { Directory.CreateDirectory(fileName); continue; } streamWriter = File.Create(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; } } } } } finally { if (streamWriter != null) { streamWriter.Close(); streamWriter = null; } if (theEntry != null) { theEntry = null; } if (s != null) { s.Close(); s = null; } GC.Collect(); GC.Collect(1); } } } }