1 using System;  2 using System.Collections.Generic;  3 using System.Linq;  4 using System.Text;  5 using System.Threading.Tasks;  6   7 using System.IO;  8 using ICSharpCode.SharpZipLib.Checksums;  9 using ICSharpCode.SharpZipLib.Zip; 10 using ICSharpCode.SharpZipLib.GZip; 11  12 namespace ZYOfficeWrap 13 { 14  15     /// <summary> 16     /// 压缩文件格式 17     /// </summary> 18  19     public enum fileType 20     { 21         Zip = 1, 22         RAR = 2, 23         Tar =3 24     } 25     /// <summary> 26     /// 文件解压缩操作类库 27     /// </summary> 28     public class FileZipOpr 29     { 30         /// <summary> 31         /// 构造函数 32         /// </summary> 33         public FileZipOpr() 34         { 35              36         } 37  38         /// <summary> 39         /// 压缩单个文件 40         /// </summary> 41         /// <param name="fileToZip">要压缩的文件</param> 42         /// <param name="zipedFile">压缩后的文件</param> 43         /// <param name="compressionLevel">压缩等级</param> 44         /// <param name="blockSize">每次写入大小</param> 45         public  void ZipFile(string fileToZip, string zipedFile, int compressionLevel, int blockSize) 46         { 47             //如果文件没有找到，则报错 48             if (!File.Exists(fileToZip)) 49             { 50                 throw new System.IO.FileNotFoundException("指定要压缩的文件: " + fileToZip + " 不存在!"); 51             } 52  53             using (FileStream ZipFile = File.Create(zipedFile)) 54             { 55                 using (ZipOutputStream ZipStream = new ZipOutputStream(ZipFile)) 56                 { 57                     using (FileStream StreamToZip = new FileStream(fileToZip, FileMode.Open, FileAccess.Read)) 58                     { 59                         string fileName = fileToZip.Substring(fileToZip.LastIndexOf("\\") + 1); 60                         ZipEntry ZipEntry = new ZipEntry(fileName); 61                         ZipStream.PutNextEntry(ZipEntry); 62                         ZipStream.SetLevel(compressionLevel); 63                         byte[] buffer = new byte[blockSize]; 64                         int sizeRead = 0; 65                         try 66                         { 67                             do 68                             { 69                                 sizeRead = StreamToZip.Read(buffer, 0, buffer.Length); 70                                 ZipStream.Write(buffer, 0, sizeRead); 71                             } 72                             while (sizeRead > 0); 73                         } 74                         catch (System.Exception ex) 75                         { 76                             throw ex; 77                         } 78                         StreamToZip.Close(); 79                     } 80  81                     ZipStream.Finish(); 82                     ZipStream.Close(); 83                 } 84                 ZipFile.Close(); 85             } 86         } 87  88         /// <summary> 89         /// 压缩单个文件 90         /// </summary> 91         /// <param name="fileToZip">要进行压缩的文件名</param> 92         /// <param name="zipedFile">压缩后生成的压缩文件名</param> 93         public  void ZipFile(string fileToZip, string zipedFile) 94         { 95             //如果文件没有找到，则报错 96             if (!File.Exists(fileToZip)) 97             { 98                 throw new System.IO.FileNotFoundException("指定要压缩的文件: " + fileToZip + " 不存在!"); 99             }100 101             using (FileStream fs = File.OpenRead(fileToZip))102             {103                 byte[] buffer = new byte[fs.Length];104                 fs.Read(buffer, 0, buffer.Length);105                 fs.Close();106 107                 using (FileStream ZipFile = File.Create(zipedFile))108                 {109                     using (ZipOutputStream ZipStream = new ZipOutputStream(ZipFile))110                     {111                         string fileName = fileToZip.Substring(fileToZip.LastIndexOf("\\") + 1);112                         ZipEntry ZipEntry = new ZipEntry(fileName);113                         ZipStream.PutNextEntry(ZipEntry);114                         ZipStream.SetLevel(5);115 116                         ZipStream.Write(buffer, 0, buffer.Length);117                         ZipStream.Finish();118                         ZipStream.Close();119                     }120                 }121             }122         }123 124         /// <summary>125         /// 压缩多层目录126         /// </summary>127         /// <param name="strDirectory">要进行压缩的文件夹</param>128         /// <param name="zipedFile">压缩后生成的压缩文件名</param>129         public  void ZipFileDirectory(string strDirectory, string zipedFile)130         {131             using (System.IO.FileStream ZipFile = System.IO.File.Create(zipedFile))132             {133                 using (ZipOutputStream s = new ZipOutputStream(ZipFile))134                 {135                     ZipSetp(strDirectory, s, "");136                 }137             }138         }139 140         /// <summary>141         /// 递归遍历目录142         /// </summary>143         /// <param name="strDirectory">文件夹名称</param>144         /// <param name="s">The ZipOutputStream Object.</param>145         /// <param name="parentPath"></param>146         private static void ZipSetp(string strDirectory, ZipOutputStream s, string parentPath)147         {148             if (strDirectory[strDirectory.Length - 1] != Path.DirectorySeparatorChar)149             {150                 strDirectory += Path.DirectorySeparatorChar;151             }152             Crc32 crc = new Crc32();153 154             string[] filenames = Directory.GetFileSystemEntries(strDirectory);155 156             foreach (string file in filenames)// 遍历所有的文件和目录157             {158 159                 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160                 {161                     string pPath = parentPath;162                     pPath += file.Substring(file.LastIndexOf("\\") + 1);163                     pPath += "\\";164                     ZipSetp(file, s, pPath);165                 }166 167                 else // 否则直接压缩文件168                 {169                     //打开压缩文件170                     using (FileStream fs = File.OpenRead(file))171                     {172 173                         byte[] buffer = new byte[fs.Length];174                         fs.Read(buffer, 0, buffer.Length);175 176                         string fileName = parentPath + file.Substring(file.LastIndexOf("\\") + 1);177                         ZipEntry entry = new ZipEntry(fileName);178 179                         entry.DateTime = DateTime.Now;180                         entry.Size = fs.Length;181 182                         fs.Close();183 184                         crc.Reset();185                         crc.Update(buffer);186 187                         entry.Crc = crc.Value;188                         s.PutNextEntry(entry);189 190                         s.Write(buffer, 0, buffer.Length);191                     }192                 }193             }194         }195 196         /// <summary>197         /// 解压缩一个 zip 文件。198         /// </summary>199         /// <param name="zipedFile">The ziped file.</param>200         /// <param name="strDirectory">The STR directory.</param>201         /// <param name="password">zip 文件的密码。</param>202         /// <param name="overWrite">是否覆盖已存在的文件。</param>203         public void UnZipFile(string zipedFile, string strDirectory, string password, bool overWrite)204         {205 206             if (strDirectory == "")207                 strDirectory = Directory.GetCurrentDirectory();208             if (!strDirectory.EndsWith("\\"))209                 strDirectory = strDirectory + "\\";210 211             using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipedFile)))212             {213                 s.Password = password;214                 ZipEntry theEntry;215 216                 while ((theEntry = s.GetNextEntry()) != null)217                 {218                     string directoryName = "";219                     string pathToZip = "";220                     pathToZip = theEntry.Name;221 222                     if (pathToZip != "")223                         directoryName = Path.GetDirectoryName(pathToZip) + "\\";224 225                     string fileName = Path.GetFileName(pathToZip);226 227                     Directory.CreateDirectory(strDirectory + directoryName);228 229                     if (fileName != "")230                     {231                         if ((File.Exists(strDirectory + directoryName + fileName) && overWrite) || (!File.Exists(strDirectory + directoryName + fileName)))232                         {233                             using (FileStream streamWriter = File.Create(strDirectory + directoryName + fileName))234                             {235                                 int size = 2048;236                                 byte[] data = http://www.mamicode.com/new byte[2048];237                                 while (true)238                                 {239                                     size = s.Read(data, 0, data.Length);240 241                                     if (size > 0)242                                         streamWriter.Write(data, 0, size);243                                     else244                                         break;245                                 }246                                 streamWriter.Close();247                             }248                         }249                     }250                 }251 252                 s.Close();253             }254         }255 256     }257 }