最近要做一个项目涉及到C#中压缩与解压缩的问题的解决方法，大家分享。
这里主要解决文件夹包含文件夹的解压缩问题。
1）下载SharpZipLib.dll，在http://www.icsharpcode.net/OpenSource/SharpZipLib/Download.aspx中有最新免费版本，“Assemblies for .NET 1.1, .NET 2.0, .NET CF 1.0, .NET CF 2.0: Download [297 KB] ”点击Download可以下载，解压后里边有好多文件夹，因为不同的版本，我用的FW2.0。
2）引用SharpZipLib.dll，在项目中点击项目右键-->添加引用-->浏览，找到要添加的DLL-->确认
这里主要解决文件夹包含文件夹的解压缩问题。
1）下载SharpZipLib.dll，在http://www.icsharpcode.net/OpenSource/SharpZipLib/Download.aspx中有最新免费版本，“Assemblies for .NET 1.1, .NET 2.0, .NET CF 1.0, .NET CF 2.0: Download [297 KB] ”点击Download可以下载，解压后里边有好多文件夹，因为不同的版本，我用的FW2.0。
2）引用SharpZipLib.dll，在项目中点击项目右键-->添加引用-->浏览，找到要添加的DLL-->确认
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using ICSharpCode.SharpZipLib;
using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Zip;
/*
* http://www.icsharpcode.net/OpenSource/SharpZipLib/ 下载ICSharpCode.SharpZipLib
* 解压缩
* 该程序压缩和解压配合才能使用
* 普通用 Winrar 压缩的文件该解压不能通过
*/
namespace ZipApplication
{
#region ZipClass
/// <summary>
/// 压缩类
/// </summary>
public class ZipClass
{
#region ZipFileDictory
/// <summary>
/// 递归压缩文件夹方法
/// </summary>
/// <param name="FolderToZip"></param>
/// <param name="s"></param>
/// <param name="ParentFolderName"></param>
private static bool ZipFileDictory(string FolderToZip, ZipOutputStream s, string ParentFolderName)
{
bool res = true;
string[] folders, filenames;
ZipEntry entry = null;
FileStream fs = null;
Crc32 crc = new Crc32();
try
{
//创建当前文件夹
entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/")); //加上 “/” 才会当成是文件夹创建
s.PutNextEntry(entry);
s.Flush();
//先压缩文件，再递归压缩文件夹
filenames = Directory.GetFiles(FolderToZip);
foreach (string file in filenames)
{
//打开压缩文件
fs = File.OpenRead(file);
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/" + Path.GetFileName(file)));
entry.DateTime = DateTime.Now;
entry.Size = fs.Length;
fs.Close();
crc.Reset();
crc.Update(buffer);
entry.Crc = crc.Value;
s.PutNextEntry(entry);
s.Write(buffer, 0, buffer.Length);
}
}
catch
{
res = false;
}
finally
{
if (fs != null)
{
fs.Close();
fs = null;
}
if (entry != null)
entry = null;
GC.Collect();
GC.Collect(1);
}
folders = Directory.GetDirectories(FolderToZip);
foreach (string folder in folders)
{
if (!ZipFileDictory(folder, s, Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip))))
return false;
}
return res;
}
#endregion
#region ZipFileDictory
/// <summary>
/// 压缩目录
/// </summary>
/// <param name="FolderToZip">待压缩的文件夹，全路径格式</param>
/// <param name="ZipedFile">压缩后的文件名，全路径格式</param>
/// <returns></returns>
private static bool ZipFileDictory(string FolderToZip, string ZipedFile, string Password)
{
bool res;
if (!Directory.Exists(FolderToZip))
return false;
ZipOutputStream s = new ZipOutputStream(File.Create(ZipedFile));
s.SetLevel(6);
if(!string.IsNullOrEmpty(Password.Trim()))
s.Password = Password.Trim();
res = ZipFileDictory(FolderToZip, s, "");
s.Finish();
s.Close();
return res;
}
#endregion
#region ZipFile
/// <summary>
/// 压缩文件
/// </summary>
/// <param name="FileToZip">要进行压缩的文件名</param>
/// <param name="ZipedFile">压缩后生成的压缩文件名</param>
/// <returns></returns>
private static bool ZipFile(string FileToZip, string ZipedFile, string Password)
{
//如果文件没有找到，则报错
if (!File.Exists(FileToZip))
throw new System.IO.FileNotFoundException("指定要压缩的文件: " + FileToZip + " 不存在!");
//FileStream fs = null;
FileStream ZipFile = null;
ZipOutputStream ZipStream = null;
ZipEntry ZipEntry = null;
bool res = true;
try
{
ZipFile = File.OpenRead(FileToZip);
byte[] buffer = new byte[ZipFile.Length];
ZipFile.Read(buffer, 0, buffer.Length);
ZipFile.Close();
ZipFile = File.Create(ZipedFile);
ZipStream = new ZipOutputStream(ZipFile);
if(!string.IsNullOrEmpty(Password.Trim()))
ZipStream.Password = Password.Trim();
ZipEntry = new ZipEntry(Path.GetFileName(FileToZip));
ZipStream.PutNextEntry(ZipEntry);
ZipStream.SetLevel(6);
ZipStream.Write(buffer, 0, buffer.Length);
}
catch
{
res = false;
}
finally
{
if (ZipEntry != null)
{
ZipEntry = null;
}
if (ZipStream != null)
{
ZipStream.Finish();
ZipStream.Close();
}
if (ZipFile != null)
{
ZipFile.Close();
ZipFile = null;
}
GC.Collect();
GC.Collect(1);
}
return res;
}
#endregion
#region Zip
/// <summary>
/// 压缩文件 和 文件夹
/// </summary>
/// <param name="FileToZip">待压缩的文件或文件夹，全路径格式</param>
/// <param name="ZipedFile">压缩后生成的压缩文件名，全路径格式</param>
/// <param name="Password">压缩密码</param>
/// <returns></returns>
public static bool Zip(string FileToZip, string ZipedFile, string Password)
{
if (Directory.Exists(FileToZip))
{
return ZipFileDictory(FileToZip, ZipedFile, Password);
}
else if (File.Exists(FileToZip))
{
return ZipFile(FileToZip, ZipedFile, Password);
}
else
{
return false;
}
}
/// <summary>
/// 压缩文件 和 文件夹
/// </summary>
/// <param name="FileToZip">待压缩的文件或文件夹，全路径格式</param>
/// <param name="ZipedFile">压缩后生成的压缩文件名，全路径格式</param>
/// <returns></returns>
public static bool Zip(string FileToZip, string ZipedFile)
{
return Zip(FileToZip, ZipedFile, "");
}
#endregion
}
#endregion
#region UnZipClass
/// <summary>
/// 解压类
/// </summary>
public class UnZipClass
{
#region UnZip
/// <summary>
/// 解压功能(解压压缩文件到指定目录)
/// </summary>
/// <param name="FileToUpZip">待解压的文件</param>
/// <param name="ZipedFolder">指定解压目标目录</param>
/// <param name="Password">指定解压密码</param>
public static void UnZip(string FileToUpZip, string ZipedFolder, string Password)
{
if (!File.Exists(FileToUpZip))
return;
if (!Directory.Exists(ZipedFolder))
Directory.CreateDirectory(ZipedFolder);
using (ZipInputStream s = new ZipInputStream(File.OpenRead(FileToUpZip)))
{
if (!string.IsNullOrEmpty(Password.Trim()))
s.Password = Password.Trim();
ZipEntry theEntry;
int size = 2048;
long fszie;
int byteLenght;
while ((theEntry = s.GetNextEntry()) != null)
{
System.Windows.Forms.MessageBox.Show(s.Length.ToString());
//Console.WriteLine(theEntry.Name);
string directoryName = Path.GetDirectoryName(theEntry.Name);
string fileName = Path.GetFileName(theEntry.Name);
// create directory
if (directoryName.Length > 0)
{
Directory.CreateDirectory(directoryName);
}
if (fileName != String.Empty)
{
fszie = theEntry.Size;
using (FileStream streamWriter = File.Create(theEntry.Name))
{
while (fszie > 0)
{
if (fszie > (long)size)
byteLenght = size;
else
byteLenght = Convert.ToInt32(fszie);
fszie = fszie - size;
byte[] data = new byte[byteLenght];
s.Read(data, 0, byteLenght);
streamWriter.Write(data, 0, byteLenght);
}
}
}
}
}
//ZipInputStream s = null;
//ZipEntry theEntry = null;
//string fileName;
//FileStream streamWriter = null;
//try
//{
// s = new ZipInputStream(File.OpenRead(FileToUpZip));
// if (!string.IsNullOrEmpty(Password.Trim()))
// s.Password = Password.Trim();
// int size = 2048;
// long fszie;
// int byteLenght;
// while ((theEntry = s.GetNextEntry()) != null)
// {
// fileName = Path.Combine(ZipedFolder, theEntry.Name);
// ///判断文件路径是否是文件夹
// if (fileName.EndsWith("/") || fileName.EndsWith("\\"))
// {
// Directory.CreateDirectory(fileName);
// continue;
// }
// streamWriter = File.Create(fileName);
// fszie = theEntry.Size;
// if (fszie > 0)
// {
// while (fszie > 0)
// {
// if (fszie > (long)size)
// byteLenght = size;
// else
// byteLenght = Convert.ToInt32(fszie);
// fszie = fszie - size;
// byte[] data = new byte[byteLenght];
// s.Read(data, 0, byteLenght);
// streamWriter.Write(data, 0, byteLenght);
// }
// }
// }
//}
//finally
//{
// if (streamWriter != null)
// {
// streamWriter.Close();
// streamWriter = null;
// }
// if (theEntry != null)
// theEntry = null;
// if (s != null)
// {
// s.Close();
// s = null;
// }
// GC.Collect();
// GC.Collect(1);
//}
}
/// <summary>
/// 解压功能(解压压缩文件到指定目录)
/// </summary>
/// <param name="FileToUpZip">待解压的文件</param>
/// <param name="ZipedFolder">指定解压目标目录</param>
public static void UnZip(string FileToUpZip, string ZipedFolder)
{
UnZip(FileToUpZip, ZipedFolder, "");
}
#endregion
}
#endregion
}
using System.Collections.Generic;
using System.Text;
using System.IO;
using ICSharpCode.SharpZipLib;
using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Zip;
/*
* http://www.icsharpcode.net/OpenSource/SharpZipLib/ 下载ICSharpCode.SharpZipLib
* 解压缩
* 该程序压缩和解压配合才能使用
* 普通用 Winrar 压缩的文件该解压不能通过
*/
namespace ZipApplication
{
#region ZipClass
/// <summary>
/// 压缩类
/// </summary>
public class ZipClass
{
#region ZipFileDictory
/// <summary>
/// 递归压缩文件夹方法
/// </summary>
/// <param name="FolderToZip"></param>
/// <param name="s"></param>
/// <param name="ParentFolderName"></param>
private static bool ZipFileDictory(string FolderToZip, ZipOutputStream s, string ParentFolderName)
{
bool res = true;
string[] folders, filenames;
ZipEntry entry = null;
FileStream fs = null;
Crc32 crc = new Crc32();
try
{
//创建当前文件夹
entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/")); //加上 “/” 才会当成是文件夹创建
s.PutNextEntry(entry);
s.Flush();
//先压缩文件，再递归压缩文件夹
filenames = Directory.GetFiles(FolderToZip);
foreach (string file in filenames)
{
//打开压缩文件
fs = File.OpenRead(file);
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
entry = new ZipEntry(Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip) + "/" + Path.GetFileName(file)));
entry.DateTime = DateTime.Now;
entry.Size = fs.Length;
fs.Close();
crc.Reset();
crc.Update(buffer);
entry.Crc = crc.Value;
s.PutNextEntry(entry);
s.Write(buffer, 0, buffer.Length);
}
}
catch
{
res = false;
}
finally
{
if (fs != null)
{
fs.Close();
fs = null;
}
if (entry != null)
entry = null;
GC.Collect();
GC.Collect(1);
}
folders = Directory.GetDirectories(FolderToZip);
foreach (string folder in folders)
{
if (!ZipFileDictory(folder, s, Path.Combine(ParentFolderName, Path.GetFileName(FolderToZip))))
return false;
}
return res;
}
#endregion
#region ZipFileDictory
/// <summary>
/// 压缩目录
/// </summary>
/// <param name="FolderToZip">待压缩的文件夹，全路径格式</param>
/// <param name="ZipedFile">压缩后的文件名，全路径格式</param>
/// <returns></returns>
private static bool ZipFileDictory(string FolderToZip, string ZipedFile, string Password)
{
bool res;
if (!Directory.Exists(FolderToZip))
return false;
ZipOutputStream s = new ZipOutputStream(File.Create(ZipedFile));
s.SetLevel(6);
if(!string.IsNullOrEmpty(Password.Trim()))
s.Password = Password.Trim();
res = ZipFileDictory(FolderToZip, s, "");
s.Finish();
s.Close();
return res;
}
#endregion
#region ZipFile
/// <summary>
/// 压缩文件
/// </summary>
/// <param name="FileToZip">要进行压缩的文件名</param>
/// <param name="ZipedFile">压缩后生成的压缩文件名</param>
/// <returns></returns>
private static bool ZipFile(string FileToZip, string ZipedFile, string Password)
{
//如果文件没有找到，则报错
if (!File.Exists(FileToZip))
throw new System.IO.FileNotFoundException("指定要压缩的文件: " + FileToZip + " 不存在!");
//FileStream fs = null;
FileStream ZipFile = null;
ZipOutputStream ZipStream = null;
ZipEntry ZipEntry = null;
bool res = true;
try
{
ZipFile = File.OpenRead(FileToZip);
byte[] buffer = new byte[ZipFile.Length];
ZipFile.Read(buffer, 0, buffer.Length);
ZipFile.Close();
ZipFile = File.Create(ZipedFile);
ZipStream = new ZipOutputStream(ZipFile);
if(!string.IsNullOrEmpty(Password.Trim()))
ZipStream.Password = Password.Trim();
ZipEntry = new ZipEntry(Path.GetFileName(FileToZip));
ZipStream.PutNextEntry(ZipEntry);
ZipStream.SetLevel(6);
ZipStream.Write(buffer, 0, buffer.Length);
}
catch
{
res = false;
}
finally
{
if (ZipEntry != null)
{
ZipEntry = null;
}
if (ZipStream != null)
{
ZipStream.Finish();
ZipStream.Close();
}
if (ZipFile != null)
{
ZipFile.Close();
ZipFile = null;
}
GC.Collect();
GC.Collect(1);
}
return res;
}
#endregion
#region Zip
/// <summary>
/// 压缩文件 和 文件夹
/// </summary>
/// <param name="FileToZip">待压缩的文件或文件夹，全路径格式</param>
/// <param name="ZipedFile">压缩后生成的压缩文件名，全路径格式</param>
/// <param name="Password">压缩密码</param>
/// <returns></returns>
public static bool Zip(string FileToZip, string ZipedFile, string Password)
{
if (Directory.Exists(FileToZip))
{
return ZipFileDictory(FileToZip, ZipedFile, Password);
}
else if (File.Exists(FileToZip))
{
return ZipFile(FileToZip, ZipedFile, Password);
}
else
{
return false;
}
}
/// <summary>
/// 压缩文件 和 文件夹
/// </summary>
/// <param name="FileToZip">待压缩的文件或文件夹，全路径格式</param>
/// <param name="ZipedFile">压缩后生成的压缩文件名，全路径格式</param>
/// <returns></returns>
public static bool Zip(string FileToZip, string ZipedFile)
{
return Zip(FileToZip, ZipedFile, "");
}
#endregion
}
#endregion
#region UnZipClass
/// <summary>
/// 解压类
/// </summary>
public class UnZipClass
{
#region UnZip
/// <summary>
/// 解压功能(解压压缩文件到指定目录)
/// </summary>
/// <param name="FileToUpZip">待解压的文件</param>
/// <param name="ZipedFolder">指定解压目标目录</param>
/// <param name="Password">指定解压密码</param>
public static void UnZip(string FileToUpZip, string ZipedFolder, string Password)
{
if (!File.Exists(FileToUpZip))
return;
if (!Directory.Exists(ZipedFolder))
Directory.CreateDirectory(ZipedFolder);
using (ZipInputStream s = new ZipInputStream(File.OpenRead(FileToUpZip)))
{
if (!string.IsNullOrEmpty(Password.Trim()))
s.Password = Password.Trim();
ZipEntry theEntry;
int size = 2048;
long fszie;
int byteLenght;
while ((theEntry = s.GetNextEntry()) != null)
{
System.Windows.Forms.MessageBox.Show(s.Length.ToString());
//Console.WriteLine(theEntry.Name);
string directoryName = Path.GetDirectoryName(theEntry.Name);
string fileName = Path.GetFileName(theEntry.Name);
// create directory
if (directoryName.Length > 0)
{
Directory.CreateDirectory(directoryName);
}
if (fileName != String.Empty)
{
fszie = theEntry.Size;
using (FileStream streamWriter = File.Create(theEntry.Name))
{
while (fszie > 0)
{
if (fszie > (long)size)
byteLenght = size;
else
byteLenght = Convert.ToInt32(fszie);
fszie = fszie - size;
byte[] data = new byte[byteLenght];
s.Read(data, 0, byteLenght);
streamWriter.Write(data, 0, byteLenght);
}
}
}
}
}
//ZipInputStream s = null;
//ZipEntry theEntry = null;
//string fileName;
//FileStream streamWriter = null;
//try
//{
// s = new ZipInputStream(File.OpenRead(FileToUpZip));
// if (!string.IsNullOrEmpty(Password.Trim()))
// s.Password = Password.Trim();
// int size = 2048;
// long fszie;
// int byteLenght;
// while ((theEntry = s.GetNextEntry()) != null)
// {
// fileName = Path.Combine(ZipedFolder, theEntry.Name);
// ///判断文件路径是否是文件夹
// if (fileName.EndsWith("/") || fileName.EndsWith("\\"))
// {
// Directory.CreateDirectory(fileName);
// continue;
// }
// streamWriter = File.Create(fileName);
// fszie = theEntry.Size;
// if (fszie > 0)
// {
// while (fszie > 0)
// {
// if (fszie > (long)size)
// byteLenght = size;
// else
// byteLenght = Convert.ToInt32(fszie);
// fszie = fszie - size;
// byte[] data = new byte[byteLenght];
// s.Read(data, 0, byteLenght);
// streamWriter.Write(data, 0, byteLenght);
// }
// }
// }
//}
//finally
//{
// if (streamWriter != null)
// {
// streamWriter.Close();
// streamWriter = null;
// }
// if (theEntry != null)
// theEntry = null;
// if (s != null)
// {
// s.Close();
// s = null;
// }
// GC.Collect();
// GC.Collect(1);
//}
}
/// <summary>
/// 解压功能(解压压缩文件到指定目录)
/// </summary>
/// <param name="FileToUpZip">待解压的文件</param>
/// <param name="ZipedFolder">指定解压目标目录</param>
public static void UnZip(string FileToUpZip, string ZipedFolder)
{
UnZip(FileToUpZip, ZipedFolder, "");
}
#endregion
}
#endregion
}
