C＃利用SharpZipLib解压或压缩文件(支持多层目录递归压缩)
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需要下载ICSharpCode.SharpZipLib.dll
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 = 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 else 244 break; 245 } 246 streamWriter.Close(); 247 } 248 } 249 } 250 } 251 252 s.Close(); 253 } 254 } 255 256 } 257 }
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