C#實現Zip壓縮解壓實例
阿新 • • 發佈：2019-03-02
bsp dll entry static empty reat lec pac 壓縮
本文只列舉一個壓縮幫助類，使用的是有要添加一個dll引用ICSharpCode.SharpZipLib.dll【下載地址】。
另外說明一下的是，這個類壓縮格式是ZIP的，所以文件的後綴寫成 .zip。
還有，如果用這個類來解壓rar格式的壓縮文件時會報錯，就網上說的那個"Wrong Local header signature: 0x21726152"異常。只要解壓ZIP壓縮格式的壓縮文件就不會報錯了。 下面就是Helper類的代碼：
using System; using System.Collections.Generic; using System.Linq;using System.Text; using System.IO; using ICSharpCode.SharpZipLib; using ICSharpCode.SharpZipLib.Zip; using ICSharpCode.SharpZipLib.Checksums; namespace CLeopardZip { /// <summary> /// 適用與ZIP壓縮 /// </summary> publicclass ZipHelper { #region 壓縮 /// <summary> /// 遞歸壓縮文件夾的內部方法 /// </summary> /// <param name="folderToZip">要壓縮的文件夾路徑</param> /// <param name="zipStream">壓縮輸出流</param> ///<param name="parentFolderName">此文件夾的上級文件夾</param> /// <returns></returns> private static bool ZipDirectory(string folderToZip, ZipOutputStream zipStream, string parentFolderName) { bool result = true; string[] folders, files; ZipEntry ent = null; FileStream fs = null; Crc32 crc = new Crc32(); try { ent = new ZipEntry(Path.Combine(parentFolderName, Path.GetFileName(folderToZip) + "/")); zipStream.PutNextEntry(ent); zipStream.Flush(); files = Directory.GetFiles(folderToZip); foreach (string file in files) { fs = File.OpenRead(file); byte[] buffer = new byte[fs.Length]; fs.Read(buffer, 0, buffer.Length); ent = new ZipEntry(Path.Combine(parentFolderName, Path.GetFileName(folderToZip) + "/" + Path.GetFileName(file))); ent.DateTime = DateTime.Now; ent.Size = fs.Length; fs.Close(); crc.Reset(); crc.Update(buffer); ent.Crc = crc.Value; zipStream.PutNextEntry(ent); zipStream.Write(buffer, 0, buffer.Length); } } catch { result = false; } finally { if (fs != null) { fs.Close(); fs.Dispose(); } if (ent != null) { ent = null; } GC.Collect(); GC.Collect(1); } folders = Directory.GetDirectories(folderToZip); foreach (string folder in folders) if (!ZipDirectory(folder, zipStream, folderToZip)) return false; return result; } /// <summary> /// 壓縮文件夾 /// </summary> /// <param name="folderToZip">要壓縮的文件夾路徑</param> /// <param name="zipedFile">壓縮文件完整路徑</param> /// <param name="password">密碼</param> /// <returns>是否壓縮成功</returns> public static bool ZipDirectory(string folderToZip, string zipedFile, string password) { bool result = false; if (!Directory.Exists(folderToZip)) return result; ZipOutputStream zipStream = new ZipOutputStream(File.Create(zipedFile)); zipStream.SetLevel(6); if (!string.IsNullOrEmpty(password)) zipStream.Password = password; result = ZipDirectory(folderToZip, zipStream, ""); zipStream.Finish(); zipStream.Close(); return result; } /// <summary> /// 壓縮文件夾 /// </summary> /// <param name="folderToZip">要壓縮的文件夾路徑</param> /// <param name="zipedFile">壓縮文件完整路徑</param> /// <returns>是否壓縮成功</returns> public static bool ZipDirectory(string folderToZip, string zipedFile) { bool result = ZipDirectory(folderToZip, zipedFile, null); return result; } /// <summary> /// 壓縮文件 /// </summary> /// <param name="fileToZip">要壓縮的文件全名</param> /// <param name="zipedFile">壓縮後的文件名</param> /// <param name="password">密碼</param> /// <returns>壓縮結果</returns> public static bool ZipFile(string fileToZip, string zipedFile, string password) { bool result = true; ZipOutputStream zipStream = null; FileStream fs = null; ZipEntry ent = null; if (!File.Exists(fileToZip)) return false; try { fs = File.OpenRead(fileToZip); byte[] buffer = new byte[fs.Length]; fs.Read(buffer, 0, buffer.Length); fs.Close(); fs = File.Create(zipedFile); zipStream = new ZipOutputStream(fs); if (!string.IsNullOrEmpty(password)) zipStream.Password = password; ent = new ZipEntry(Path.GetFileName(fileToZip)); zipStream.PutNextEntry(ent); zipStream.SetLevel(6); zipStream.Write(buffer, 0, buffer.Length); } catch { result = false; } finally { if (zipStream != null) { zipStream.Finish(); zipStream.Close(); } if (ent != null) { ent = null; } if (fs != null) { fs.Close(); fs.Dispose(); } } GC.Collect(); GC.Collect(1); return result; } /// <summary> /// 壓縮文件 /// </summary> /// <param name="fileToZip">要壓縮的文件全名</param> /// <param name="zipedFile">壓縮後的文件名</param> /// <returns>壓縮結果</returns> public static bool ZipFile(string fileToZip, string zipedFile) { bool result = ZipFile(fileToZip, zipedFile, null); return result; } /// <summary> /// 壓縮文件或文件夾 /// </summary> /// <param name="fileToZip">要壓縮的路徑</param> /// <param name="zipedFile">壓縮後的文件名</param> /// <param name="password">密碼</param> /// <returns>壓縮結果</returns> public static bool Zip(string fileToZip, string zipedFile, string password) { bool result = false; if (Directory.Exists(fileToZip)) result = ZipDirectory(fileToZip, zipedFile, password); else if (File.Exists(fileToZip)) result = ZipFile(fileToZip, zipedFile, password); return result; } /// <summary> /// 壓縮文件或文件夾 /// </summary> /// <param name="fileToZip">要壓縮的路徑</param> /// <param name="zipedFile">壓縮後的文件名</param> /// <returns>壓縮結果</returns> public static bool Zip(string fileToZip, string zipedFile) { bool result = Zip(fileToZip, zipedFile, null); return result; } #endregion #region 解壓 /// <summary> /// 解壓功能(解壓壓縮文件到指定目錄) /// </summary> /// <param name="fileToUnZip">待解壓的文件</param> /// <param name="zipedFolder">指定解壓目標目錄</param> /// <param name="password">密碼</param> /// <returns>解壓結果</returns> public static bool UnZip(string fileToUnZip, string zipedFolder, string password) { bool result = true; FileStream fs = null; ZipInputStream zipStream = null; ZipEntry ent = null; string fileName; if (!File.Exists(fileToUnZip)) return false; if (!Directory.Exists(zipedFolder)) Directory.CreateDirectory(zipedFolder); try { zipStream = new ZipInputStream(File.OpenRead(fileToUnZip)); if (!string.IsNullOrEmpty(password)) zipStream.Password = password; while ((ent = zipStream.GetNextEntry()) != null) { if (!string.IsNullOrEmpty(ent.Name)) { fileName = Path.Combine(zipedFolder, ent.Name); fileName = fileName.Replace(‘/‘, ‘\\‘);//change by Mr.HopeGi if (fileName.EndsWith("\\")) { Directory.CreateDirectory(fileName); continue; } fs = File.Create(fileName); int size = 2048; byte[] data = new byte[size]; while (true) { size = zipStream.Read(data, 0, data.Length); if (size > 0) fs.Write(data, 0, data.Length); else break; } } } } catch { result = false; } finally { if (fs != null) { fs.Close(); fs.Dispose(); } if (zipStream != null) { zipStream.Close(); zipStream.Dispose(); } if (ent != null) { ent = null; } GC.Collect(); GC.Collect(1); } return result; } /// <summary> /// 解壓功能(解壓壓縮文件到指定目錄) /// </summary> /// <param name="fileToUnZip">待解壓的文件</param> /// <param name="zipedFolder">指定解壓目標目錄</param> /// <returns>解壓結果</returns> public static bool UnZip(string fileToUnZip, string zipedFolder) { bool result = UnZip(fileToUnZip, zipedFolder, null); return result; } #endregion } }
轉載自：https://www.cnblogs.com/jimcsharp/p/5943195.html
C#實現Zip壓縮解壓實例