1 /// <summary> 2 /// Zip 压缩文件 3 /// </summary> 4 public class Zip 5 { 6 public Zip() 7 { 8 9 } 10 #region 加压方法 11 /// <summary> 12 /// 功能：压缩文件（暂时只压缩文件夹下一级目录中的文件，文件夹及其子级被忽略） 13 /// </summary> 14 /// <param name="dirPath">被压缩的文件夹夹路径</param> 15 /// <param name="zipFilePath">生成压缩文件的路径，为空则默认与被压缩文件夹同一级目录，名称为：文件夹名+.zip</param> 16 /// <param name="err">出错信息</param> 17 /// <returns>是否压缩成功</returns> 18 public static bool ZipFile(string dirPath, string zipFilePath, out string err) 19 { 20 err = ""; 21 if (dirPath == string.Empty) 22 { 23 err = "要压缩的文件夹不能为空！"; 24 return false; 25 } 26 if (!Directory.Exists(dirPath)) 27 { 28 err = "要压缩的文件夹不存在！"; 29 return false; 30 } 31 //压缩文件名为空时使用文件夹名＋.zip 32 if (zipFilePath == string.Empty) 33 { 34 if (dirPath.EndsWith("//")) 35 { 36 dirPath = dirPath.Substring(0, dirPath.Length - 1); 37 } 38 zipFilePath = dirPath + ".zip"; 39 } 40 41 try 42 { 43 string[] filenames = Directory.GetFiles(dirPath); 44 using (ZipOutputStream s = new ZipOutputStream(File.Create(zipFilePath))) 45 { 46 s.SetLevel(9); 47 byte[] buffer = new byte[4096]; 48 foreach (string file in filenames) 49 { 50 ZipEntry entry = new ZipEntry(Path.GetFileName(file)); 51 entry.DateTime = DateTime.Now; 52 s.PutNextEntry(entry); 53 using (FileStream fs = File.OpenRead(file)) 54 { 55 int sourceBytes; 56 do 57 { 58 sourceBytes = fs.Read(buffer, 0, buffer.Length); 59 s.Write(buffer, 0, sourceBytes); 60 } while (sourceBytes > 0); 61 } 62 } 63 s.Finish(); 64 s.Close(); 65 } 66 } 67 catch (Exception ex) 68 { 69 err = ex.Message; 70 return false; 71 } 72 return true; 73 } 74 #endregion 75 76 #region 解压 77 /// <summary> 78 /// 功能：解压zip格式的文件。 79 /// </summary> 80 /// <param name="zipFilePath">压缩文件路径</param> 81 /// <param name="unZipDir">解压文件存放路径,为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹</param> 82 /// <param name="err">出错信息</param> 83 /// <returns>解压是否成功</returns> 84 public static bool UnZipFile(string zipFilePath, string unZipDir, out string err) 85 { 86 err = ""; 87 if (zipFilePath == string.Empty) 88 { 89 err = "压缩文件不能为空！"; 90 return false; 91 } 92 if (!File.Exists(zipFilePath)) 93 { 94 err = "压缩文件不存在！"; 95 return false; 96 } 97 //解压文件夹为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹 98 if (unZipDir == string.Empty) 99 unZipDir = zipFilePath.Replace(Path.GetFileName(zipFilePath), Path.GetFileNameWithoutExtension(zipFilePath)); 100 if (!unZipDir.EndsWith("//")) 101 unZipDir += "//"; 102 if (!Directory.Exists(unZipDir)) 103 Directory.CreateDirectory(unZipDir); 104 105 try 106 { 107 using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipFilePath))) 108 { 109 110 ZipEntry theEntry; 111 while ((theEntry = s.GetNextEntry()) != null) 112 { 113 string directoryName = Path.GetDirectoryName(theEntry.Name); 114 string fileName = Path.GetFileName(theEntry.Name); 115 if (directoryName.Length > 0) 116 { 117 Directory.CreateDirectory(unZipDir + directoryName); 118 } 119 if (!directoryName.EndsWith("//")) 120 directoryName += "//"; 121 if (fileName != String.Empty) 122 { 123 using (FileStream streamWriter = File.Create(unZipDir + theEntry.Name)) 124 { 125 126 int size = 2048; 127 byte[] data = new byte[2048]; 128 while (true) 129 { 130 size = s.Read(data, 0, data.Length); 131 if (size > 0) 132 { 133 streamWriter.Write(data, 0, size); 134 } 135 else 136 { 137 break; 138 } 139 } 140 } 141 } 142 }//while 143 } 144 } 145 catch (Exception ex) 146 { 147 err = ex.Message; 148 return false; 149 } 150 return true; 151 }//解压结束 152 #endregion