今天为了解决压缩分散的文件时，发现想通过压缩对象直接进行文件夹整理很麻烦，因为SharpZipLib没有提供压缩进某个指定文件夹的功能，在反复分析了SharpZipLib提供的各个接口方法后，终于找到了解决方法，现在贴出来，给需要的同学参考参考。
下面是封装的压缩类：
using ICSharpCode.SharpZipLib.Zip;
using System;
using System.IO; namespace CompressTools
{
/// <summary>
/// SharpZipLib压缩
/// </summary>
public class Zip
{
/// <summary>
/// 创建压缩对象
/// </summary>
/// <param name="targeFile">目标文件</param>
/// <returns></returns>
public static ZipOutputStream CreateZip(string targeFile)
{
Directory.CreateDirectory(Path.GetDirectoryName(targeFile));
var s = new ZipOutputStream(File.Create(targeFile));
s.SetLevel(6);
return s;
}
/// <summary>
/// 关闭压缩对象
/// </summary>
/// <param name="zip"></param>
public static void CloseZip(ZipOutputStream zip)
{
zip.Finish();
zip.Close();
}
/// <summary>
/// 压缩文件
/// </summary>
/// <param name="s">压缩文件流</param>
/// <param name="source">不可空，待压缩的文件</param>
/// <param name="folder">可空，目标文件夹（不指定则默认取待压缩文件目录的计算值）</param>
public static bool Compress(ZipOutputStream s, string source, string folder)
{
if (s == null)
{
throw new FileNotFoundException("压缩文件流不可为空");
}
if (!File.Exists(source))
{
throw new FileNotFoundException(string.Format("未能找到文件 '{0}' ", source));
}
using (FileStream fs = File.OpenRead(source))
{
ZipEntry entry = null;
if (string.IsNullOrWhiteSpace(folder))
{
entry = new ZipEntry(source.Replace(Path.GetPathRoot(source), ""));
}
else
{
var path = folder.Contains(":\\") ? folder.Replace(Path.GetPathRoot(folder), "") : folder;
entry = new ZipEntry(path + "\\" + Path.GetFileName(source));
}
var buffer = File.ReadAllBytes(source);
entry.DateTime = DateTime.Now;
s.PutNextEntry(entry);
s.Write(buffer, 0, buffer.Length);
}
return true;
} /// <summary>
/// 解压缩
/// </summary>
/// <param name="sourceFile">源文件</param>
/// <param name="targetPath">目标路经</param>
public static bool Decompress(string sourceFile, string targetPath)
{
if (!File.Exists(sourceFile))
{
throw new FileNotFoundException(string.Format("未能找到文件 '{0}' ", sourceFile));
}
if (!Directory.Exists(targetPath))
{
Directory.CreateDirectory(targetPath);
}
using (ZipInputStream s = new ZipInputStream(File.OpenRead(sourceFile)))
{
ZipEntry theEntry;
while ((theEntry = s.GetNextEntry()) != null)
{
string directorName = Path.Combine(targetPath, Path.GetDirectoryName(theEntry.Name));
string fileName = Path.Combine(directorName, Path.GetFileName(theEntry.Name));
if (directorName.Length > 0)
{
Directory.CreateDirectory(directorName);
}
if (!string.IsNullOrWhiteSpace(fileName))
{
using (FileStream streamWriter = File.Create(fileName))
{
int size = (int)theEntry.Size;
byte[] data = new byte[size];
size = s.Read(data, 0, data.Length);
if (size > 0)
{
streamWriter.Write(data, 0, size);
}
}
}
}
}
return true;
}
}
}
测试方法：
public ActionResult Index()
{
//创建压缩对象
var zip = Zip.CreateZip(@"D:\\testZip\\test.zip");
//根据需要添加压缩对象
Zip.Compress(zip, "E:\\Document\\down.png", "");
Zip.Compress(zip, "E:\\Document\\ending.mp4", "");
Zip.Compress(zip, "E:\\Document\\ending.mp4", "D:\\testChildFolder");
Zip.Compress(zip, "E:\\WorkSpace\\test.jpg", "testChildFolder");
Zip.Compress(zip, "E:\\WorkSpace\\test.jpg", "testFolder\\testChildFolder");
//关闭压缩对象
zip.Close();
// 解压缩
Zip.Decompress(@"D:\\testZip\\test.zip", @"D:\\Zip");
}