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C# 下利用ICSharpCode.SharpZipLib.dll实现文件/文件夹压缩、解压缩
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1、压缩某个指定目录下日志，将日志压缩到CompressionDirectory文件夹中，并清除原来未压缩日志。
#region 压缩logs目录下日志
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)
{
//错误信息记录处理
}
}
}
catch (Exception e)
{
//错误信息记录处理
}
}
}
catch (Exception e)
{
//错误信息记录处理
}
}
#endregion2、压缩指定目录子目录下日志，将日志压缩到CompressionDirectory文件夹中，并清除原来未压缩日志。 #region 压缩logs子目录下日志
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)
{
//错误信息记录处理
}
}
}
catch (Exception e)
{
//错误信息记录处理
}
}
}
}
catch (Exception e)
{
//错误信息记录处理
}
}
#endregion3、压缩文件 #region 压缩文件
/// <summary>
/// 压缩文件
/// </summary>
/// <param name="fileNames">要打包的文件列表</param>
/// <param name="GzipFileName">目标文件名</param>
/// <param name="CompressionLevel">压缩品质级别（0~9）</param>
/// <param name="SleepTimer">休眠时间（单位毫秒）</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;
}
// 将文件分批读入缓冲区
byte[] data = http://www.mamicode.com/new byte[2048];>4、解压缩
#region 解压缩文件
/// <summary>
/// 解压缩文件
/// </summary>
/// <param name="GzipFile">压缩包文件名</param>
/// <param name="targetPath">解压缩目标路径</param>
public static void Decompress(string GzipFile, string targetPath)
{
//string directoryName = Path.GetDirectoryName(targetPath + "//") + "//";
string directoryName = targetPath;
if (!Directory.Exists(directoryName)) Directory.CreateDirectory(directoryName);//生成解压目录
string CurrentDirectory = directoryName;
byte[] data = http://www.mamicode.com/new byte[2048];>5、压缩文件夹 #region 压缩文件夹
/// <summary>
/// 压缩文件夹
/// </summary>
/// <param name="dirPath">要打包的文件夹</param>
/// <param name="GzipFileName">目标文件名</param>
/// <param name="CompressionLevel">压缩品质级别（0~9）</param>
/// <param name="deleteDir">是否删除原文件夹</param>
public static void CompressDirectory(string dirPath, string GzipFileName, int CompressionLevel, bool deleteDir)
{
//压缩文件为空时默认与压缩文件夹同一级目录
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);
}
}
#endregion6、获取所有文件 #region 获取所有文件
/// <summary>
/// 获取所有文件
/// </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("目录:" + fileDire.FullName + "没有找到!");
}
GetAllDirFiles(fileDire, FilesList);
GetAllDirsFiles(fileDire.GetDirectories(), FilesList);
return FilesList;
}
#endregion7、获取一个文件夹下的所有文件夹里的文件 #region 获取一个文件夹下的所有文件夹里的文件
/// <summary>
/// 获取一个文件夹下的所有文件夹里的文件
/// </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);
}
}
#endregion8、获取一个文件夹下的文件 #region 获取一个文件夹下的文件
/// <summary>
/// 获取一个文件夹下的文件
/// </summary>
/// <param name="dir">目录名称</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
C# 下利用ICSharpCode.SharpZipLib.dll实现文件/文件夹压缩、解压缩
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