C#利用ICSharpCode.SharpZipLib.dll压缩文件和解压文件
/// <summary>
/// 压缩文件
/// </summary>
using System;
using System.IO;
using ICSharpCode.SharpZipLib.Checksums;
using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.GZip;
namespace FtpResume.Utility
{
public class ZipClass
{
public string cutStr = "";
public void ZipFile(string FileToZip, string ZipedFile, int CompressionLevel, int BlockSize)
{
//如果文件没有找到则报错。
if (!System.IO.File.Exists(FileToZip))
{
throw new System.IO.FileNotFoundException("The specified file " + FileToZip + " could not be found. Zipping aborderd");
}
System.IO.FileStream StreamToZip = new System.IO.FileStream(FileToZip, System.IO.FileMode.Open, System.IO.FileAccess.Read);
System.IO.FileStream ZipFile = System.IO.File.Create(ZipedFile);
ZipOutputStream ZipStream = new ZipOutputStream(ZipFile);
ZipEntry ZipEntry = new ZipEntry("ZippedFile");
ZipStream.PutNextEntry(ZipEntry);
ZipStream.SetLevel(CompressionLevel);
byte[] buffer = new byte[BlockSize];
System.Int32 size = StreamToZip.Read(buffer, 0, buffer.Length);
ZipStream.Write(buffer, 0, size);
try
{
while (size < StreamToZip.Length)
{
int sizeRead = StreamToZip.Read(buffer, 0, buffer.Length);
ZipStream.Write(buffer, 0, sizeRead);
size += sizeRead;
}
}
catch (System.Exception ex)
{
throw ex;
}
ZipStream.Finish();
ZipStream.Close();
StreamToZip.Close();
}
//Get all DirectoryInfo
private void direct(DirectoryInfo di, ref ZipOutputStream s, Crc32 crc)
{
//DirectoryInfo di = new DirectoryInfo(filenames);
DirectoryInfo[] dirs = di.GetDirectories("*");
//遍历目录下面的所有的子目录
foreach (DirectoryInfo dirNext in dirs)
{
//将该目录下的所有文件添加到 ZipOutputStream s 压缩流里面
FileInfo[] a = dirNext.GetFiles();
this.writeStream(ref s, a, crc);
//递归调用直到把所有的目录遍历完成
direct(dirNext, ref s, crc);
}
}
private void writeStream(ref ZipOutputStream s, FileInfo[] a, Crc32 crc)
{
foreach (FileInfo fi in a)
{
//string fifn = fi.FullName;
FileStream fs = fi.OpenRead();
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
//ZipEntry entry = new ZipEntry(file); Path.GetFileName(file)
string file = fi.FullName;
file = file.Replace(cutStr, "");
ZipEntry entry = new ZipEntry(file);
entry.DateTime = DateTime.Now;
// set Size and the crc, because the information
// about the size and crc should be stored in the header
// if it is not set it is automatically written in the footer.
// (in this case size == crc == -1 in the header)
// Some ZIP programs have problems with zip files that don't store
// the size and crc in the header.
entry.Size = fs.Length;
fs.Close();
crc.Reset();
crc.Update(buffer);
entry.Crc = crc.Value;
s.PutNextEntry(entry);
s.Write(buffer, 0, buffer.Length);
}
}
/// <summary>
/// 压缩指定目录下指定文件(包括子目录下的文件)
/// </summary>
/// <param name="zippath">args[0]为你要压缩的目录所在的路径
/// 例如：D:\\temp\\ (注意temp 后面加 \\ 但是你写程序的时候怎么修改都可以)</param>
/// <param name="zipfilename">args[1]为压缩后的文件名及其路径
/// 例如：D:\\temp.zip</param>
/// <param name="fileFilter">文件过滤, 例如*.xml,这样只压缩.xml文件.</param>
///
public bool ZipFileMain(string zippath, string zipfilename, string fileFilter)
{
try
{
//string filenames = Directory.GetFiles(args[0]);
Crc32 crc = new Crc32();
ZipOutputStream s = new ZipOutputStream(File.Create(zipfilename));
s.SetLevel(6); // 0 - store only to 9 - means best compression
DirectoryInfo di = new DirectoryInfo(zippath);
FileInfo[] a = di.GetFiles(fileFilter);
cutStr = zippath.Trim();
//压缩这个目录下的所有文件
writeStream(ref s, a, crc);
//压缩这个目录下子目录及其文件
direct(di, ref s, crc);
s.Finish();
s.Close();
}
catch
{
return false;
}
return true;
}
}
}
///<summary>
///解压缩文件
///</summary>
using System;
using System.Text;
using System.Collections;
using System.IO;
using System.Diagnostics;
using System.Runtime.Serialization.Formatters.Binary;
using System.Data;
using ICSharpCode.SharpZipLib.BZip2;
using ICSharpCode.SharpZipLib.Zip;
using ICSharpCode.SharpZipLib.Zip.Compression;
using ICSharpCode.SharpZipLib.Zip.Compression.Streams;
using ICSharpCode.SharpZipLib.GZip;
namespace FtpResume.Utility
{
public class UnZipClass
{
/// <summary>
/// 解压缩文件(压缩文件中含有子目录)
/// </summary>
/// <param name="zipfilepath">待解压缩的文件路径</param>
/// <param name="unzippath">解压缩到指定目录</param>
public void UnZip(string zipfilepath, string unzippath)
{
ZipInputStream s = new ZipInputStream(File.OpenRead(zipfilepath));
ZipEntry theEntry;
while ((theEntry = s.GetNextEntry()) != null)
{
string directoryName = Path.GetDirectoryName(unzippath);
string fileName = Path.GetFileName(theEntry.Name);
//生成解压目录
Directory.CreateDirectory(directoryName);
if (fileName != String.Empty)
{
//如果文件的压缩后大小为0那么说明这个文件是空的,因此不需要进行读出写入
if (theEntry.CompressedSize == 0)
break;
//解压文件到指定的目录
directoryName = Path.GetDirectoryName(unzippath + theEntry.Name);
//建立下面的目录和子目录
Directory.CreateDirectory(directoryName);
FileStream streamWriter = File.Create(unzippath + theEntry.Name);
int size = 2048;
byte[] data = new byte[2048];
while (true)
{
size = s.Read(data, 0, data.Length);
if (size > 0)
{
streamWriter.Write(data, 0, size);
}
else
{
break;
}
}
streamWriter.Close();
}
}
s.Close();
}
}
}
