C# 下利用ICSharpCode.SharpZipLib.dll實現文件/目錄壓縮、解壓縮
ICSharpCode.SharpZipLib.dll下載地址ui
一、壓縮某個指定文件夾下日誌，將日誌壓縮到CompressionDirectory文件夾中，並清除原來未壓縮日誌。.net
#region 壓縮logs文件夾下日誌
public static void CompresslogDic()
{
try
{
string logFilePath = AppDomain.CurrentDomain.BaseDirectory + "logs";
DirectoryInfo logsDic = new DirectoryInfo(logFilePath);
FileInfo[] bipLog = logsDic.GetFiles();
DateTime dt = DateTime.Now;
List<FileInfo> logsInOneDay = new List<FileInfo>();
for (int i = 0; i < bipLog.Length; i++)
{
if (bipLog[i].Name.Substring(bipLog[i].Name.Length - 3) != "zip")
{
logsInOneDay.Add(bipLog[i]);
}
}
if (logsInOneDay.Count > 0)
{
try
{
if (!Directory.Exists(logsDic.FullName + "\\CompressionDirectory"))
{
Directory.CreateDirectory(logsDic.FullName + "\\CompressionDirectory");
}
string compressFileName = dt.ToString("yyyy-MM-dd");
if (File.Exists(logsDic.FullName + "\\CompressionDirectory\\" + dt.ToString("yyyy-MM-dd") + ".zip"))
{
Guid guid = Guid.NewGuid();
compressFileName = compressFileName + "-" + guid.ToString();
}
compressFileName += ".zip";
Compress(logsInOneDay, logsDic.FullName + "\\CompressionDirectory\\" + compressFileName, 9, 100);
foreach (FileInfo fileInfo in logsInOneDay)
{
try
{
fileInfo.Delete();
}
catch (Exception e)
{
//錯誤信息記錄處理
}
}
}
catch (Exception e)
{
//錯誤信息記錄處理
}
}
}
catch (Exception e)
{
//錯誤信息記錄處理
}
}
#endregion二、壓縮指定文件夾子文件夾下日誌，將日誌壓縮到CompressionDirectory文件夾中，並清除原來未壓縮日誌。
#region 壓縮logs子文件夾下日誌
public static void CompresslogsDic()
{
try
{
string logFilePath = AppDomain.CurrentDomain.BaseDirectory + "logs";
DirectoryInfo logsDic = new DirectoryInfo(logFilePath);
FileInfo[] bipLog = logsDic.GetFiles();
DateTime dt = DateTime.Now;
DirectoryInfo[] subLosgDic = logsDic.GetDirectories();
foreach (DirectoryInfo bankDic in subLosgDic)
{
dt = DateTime.Now;
bipLog = bankDic.GetFiles();
List<FileInfo> logsInOneDay = new List<FileInfo>();
for (int i = 0; i < bipLog.Length; i++)
{
if (bipLog[i].Name.Substring(bipLog[i].Name.Length - 3) != "zip")
{
logsInOneDay.Add(bipLog[i]);
}
}
if (logsInOneDay.Count > 0)
{
try
{
if (!Directory.Exists(bankDic.FullName + "\\CompressionDirectory"))
{
Directory.CreateDirectory(bankDic.FullName + "\\CompressionDirectory");
}
string compressFileName = dt.ToString("yyyy-MM-dd");
if (File.Exists(bankDic.FullName + "\\CompressionDirectory\\" + dt.ToString("yyyy-MM-dd") + ".zip"))
{
Guid guid = Guid.NewGuid();
compressFileName = compressFileName + "-" + guid.ToString();
}
compressFileName += ".zip";
Compress(logsInOneDay, bankDic.FullName + "\\CompressionDirectory\\" + compressFileName, 9, 100);
foreach (FileInfo fileInfo in logsInOneDay)
{
try
{
fileInfo.Delete();
}
catch (Exception e)
{
//錯誤信息記錄處理
}
}
}
catch (Exception e)
{
//錯誤信息記錄處理
}
}
}
}
catch (Exception e)
{
//錯誤信息記錄處理
}
}
#endregion三、壓縮文件
#region 壓縮文件
/// <summary>
/// 壓縮文件
/// </summary>
/// <param name="fileNames">要打包的文件列表</param>
/// <param name="GzipFileName">目標文件名稱</param>
/// <param name="CompressionLevel">壓縮品質級別（0~9）</param>
/// <param name="SleepTimer">休眠時間（單位毫秒）</param>
public static void Compress(List<FileInfo> fileNames, string GzipFileName, int CompressionLevel, int SleepTimer)
{
ZipOutputStream s = new ZipOutputStream(File.Create(GzipFileName));
try
{
s.SetLevel(CompressionLevel); //0 - store only to 9 - means best compression
foreach (FileInfo file in fileNames)
{
FileStream fs = null;
try
{
fs = file.Open(FileMode.Open, FileAccess.ReadWrite);
}
catch
{
continue;
}
// 將文件分批讀入緩衝區
byte[] data = new byte[2048];
int size = 2048;
ZipEntry entry = new ZipEntry(Path.GetFileName(file.Name));
entry.DateTime = (file.CreationTime > file.LastWriteTime ? file.LastWriteTime : file.CreationTime);
s.PutNextEntry(entry);
while (true)
{
size = fs.Read(data, 0, size);
if (size <= 0) break;
s.Write(data, 0, size);
}
fs.Close();
Thread.Sleep(SleepTimer);
}
}
finally
{
s.Finish();
s.Close();
}
}
#endregion四、解壓縮
#region 解壓縮文件
/// <summary>
/// 解壓縮文件
/// </summary>
/// <param name="GzipFile">壓縮包文件名稱</param>
/// <param name="targetPath">解壓縮目標路徑</param>
public static void Decompress(string GzipFile, string targetPath)
{
//string directoryName = Path.GetDirectoryName(targetPath + "//") + "//";
string directoryName = targetPath;
if (!Directory.Exists(directoryName)) Directory.CreateDirectory(directoryName);//生成解壓文件夾
string CurrentDirectory = directoryName;
byte[] data = new byte[2048];
int size = 2048;
ZipEntry theEntry = null;
using (ZipInputStream s = new ZipInputStream(File.OpenRead(GzipFile)))
{
while ((theEntry = s.GetNextEntry()) != null)
{
if (theEntry.IsDirectory)
{// 該結點是文件夾
if (!Directory.Exists(CurrentDirectory + theEntry.Name)) Directory.CreateDirectory(CurrentDirectory + theEntry.Name);
}
else
{
if (theEntry.Name != String.Empty)
{
//檢查多級文件夾是否存在
if (theEntry.Name.Contains("//"))
{
string parentDirPath = theEntry.Name.Remove(theEntry.Name.LastIndexOf("//") + 1);
if (!Directory.Exists(parentDirPath))
{
Directory.CreateDirectory(CurrentDirectory + parentDirPath);
}
}
//解壓文件到指定的文件夾
using (FileStream streamWriter = File.Create(CurrentDirectory + theEntry.Name))
{
while (true)
{
size = s.Read(data, 0, data.Length);
if (size <= 0) break;
streamWriter.Write(data, 0, size);
}
streamWriter.Close();
}
}
}
}
s.Close();
}
}
#endregion五、壓縮文件夾
#region 壓縮目錄
/// <summary>
/// 壓縮目錄
/// </summary>
/// <param name="dirPath">要打包的目錄</param>
/// <param name="GzipFileName">目標文件名稱</param>
/// <param name="CompressionLevel">壓縮品質級別（0~9）</param>
/// <param name="deleteDir">是否刪除原目錄</param>
public static void CompressDirectory(string dirPath, string GzipFileName, int CompressionLevel, bool deleteDir)
{
//壓縮文件爲空時默認與壓縮目錄同一級目錄
if (GzipFileName == string.Empty)
{
GzipFileName = dirPath.Substring(dirPath.LastIndexOf("//") + 1);
GzipFileName = dirPath.Substring(0, dirPath.LastIndexOf("//")) + "//" + GzipFileName + ".zip";
}
//if (Path.GetExtension(GzipFileName) != ".zip")
//{
// GzipFileName = GzipFileName + ".zip";
//}
using (ZipOutputStream zipoutputstream = new ZipOutputStream(File.Create(GzipFileName)))
{
zipoutputstream.SetLevel(CompressionLevel);
ICSharpCode.SharpZipLib.Checksums.Crc32 crc = new ICSharpCode.SharpZipLib.Checksums.Crc32();
Dictionary<string, DateTime> fileList = GetAllFies(dirPath);
foreach (KeyValuePair<string, DateTime> item in fileList)
{
FileStream fs = File.OpenRead(item.Key.ToString());
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
ZipEntry entry = new ZipEntry(item.Key.Substring(dirPath.Length));
entry.DateTime = item.Value;
entry.Size = fs.Length;
fs.Close();
crc.Reset();
crc.Update(buffer);
entry.Crc = crc.Value;
zipoutputstream.PutNextEntry(entry);
zipoutputstream.Write(buffer, 0, buffer.Length);
}
}
if (deleteDir)
{
Directory.Delete(dirPath, true);
}
}
#endregion六、獲取傳遞目錄參數Dir下所有文件（EG:GetAllFies(@"F:\WorkSpace")獲取F盤WorkSpace目錄下所有文件）
#region 獲取所有文件
/// <summary>
/// 獲取所有文件
/// </summary>
/// <returns></returns>
private static Dictionary<string, DateTime> GetAllFies(string dir)
{
Dictionary<string, DateTime> FilesList = new Dictionary<string, DateTime>();
DirectoryInfo fileDire = new DirectoryInfo(dir);
if (!fileDire.Exists)
{
throw new System.IO.FileNotFoundException("目錄:" + fileDire.FullName + "沒有找到!");
}
GetAllDirFiles(fileDire, FilesList);
GetAllDirsFiles(fileDire.GetDirectories(), FilesList);
return FilesList;
}
#endregion七、獲取一個目錄下的所有目錄裏的文件
#region 獲取一個目錄下的所有目錄裏的文件
/// <summary>
/// 獲取一個目錄下的所有目錄裏的文件
/// </summary>
/// <param name="dirs"></param>
/// <param name="filesList"></param>
private static void GetAllDirsFiles(DirectoryInfo[] dirs, Dictionary<string, DateTime> filesList)
{
foreach (DirectoryInfo dir in dirs)
{
foreach (FileInfo file in dir.GetFiles("*.*"))
{
filesList.Add(file.FullName, file.LastWriteTime);
}
GetAllDirsFiles(dir.GetDirectories(), filesList);
}
}
#endregion八、獲取一個目錄下的文件
#region 獲取一個目錄下的文件
/// <summary>
/// 獲取一個目錄下的文件
/// </summary>
/// <param name="dir">目錄名稱</param>
/// <param name="filesList">文件列表HastTable</param>
private static void GetAllDirFiles(DirectoryInfo dir, Dictionary<string, DateTime> filesList)
{
foreach (FileInfo file in dir.GetFiles("*.*"))
{
filesList.Add(file.FullName, file.LastWriteTime);
}
}
#endregion
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