用c#自带的System.IO.Compression命名空间下的压缩类实现的多文件压缩和解压功能，缺点是多文件压缩包的解压只能调用自身的解压方法，和现有的压缩软件不兼容。下面的代码没有把多文件的目录结构加进去，有需要的可以自己改下。
using System;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression; namespace Test.Zip
{
class CompressHelper
{
/// <summary>
/// 单文件压缩（生成的压缩包和第三方的解压软件兼容）
/// </summary>
/// <param name="sourceFilePath"></param>
/// <returns></returns>
public string CompressSingle(string sourceFilePath)
{
string zipFileName = sourceFilePath + ".gz";
using (FileStream sourceFileStream = new FileInfo(sourceFilePath).OpenRead())
{
using (FileStream zipFileStream = File.Create(zipFileName))
{
using (GZipStream zipStream = new GZipStream(zipFileStream, CompressionMode.Compress))
{
sourceFileStream.CopyTo(zipStream);
}
}
}
return zipFileName;
}
/// <summary>
/// 自定义多文件压缩（生成的压缩包和第三方的压缩文件解压不兼容）
/// </summary>
/// <param name="sourceFileList">文件列表</param>
/// <param name="saveFullPath">压缩包全路径</param>
public void CompressMulti(string[] sourceFileList, string saveFullPath)
{
MemoryStream ms = new MemoryStream();
foreach (string filePath in sourceFileList)
{
Console.WriteLine(filePath);
if (File.Exists(filePath))
{
string fileName = Path.GetFileName(filePath);
byte[] fileNameBytes = System.Text.Encoding.UTF8.GetBytes(fileName);
byte[] sizeBytes = BitConverter.GetBytes(fileNameBytes.Length);
ms.Write(sizeBytes, , sizeBytes.Length);
ms.Write(fileNameBytes, , fileNameBytes.Length);
byte[] fileContentBytes = System.IO.File.ReadAllBytes(filePath);
ms.Write(BitConverter.GetBytes(fileContentBytes.Length), , );
ms.Write(fileContentBytes, , fileContentBytes.Length);
}
}
ms.Flush();
ms.Position = ;
using (FileStream zipFileStream = File.Create(saveFullPath))
{
using (GZipStream zipStream = new GZipStream(zipFileStream, CompressionMode.Compress))
{
ms.Position = ;
ms.CopyTo(zipStream);
}
}
ms.Close();
} /// <summary>
/// 多文件压缩解压
/// </summary>
/// <param name="zipPath">压缩文件路径</param>
/// <param name="targetPath">解压目录</param>
public void DeCompressMulti(string zipPath, string targetPath)
{
byte[] fileSize = new byte[];
if (File.Exists(zipPath))
{
using (FileStream fStream = File.Open(zipPath, FileMode.Open))
{
using (MemoryStream ms = new MemoryStream())
{
using (GZipStream zipStream = new GZipStream(fStream, CompressionMode.Decompress))
{
zipStream.CopyTo(ms);
}
ms.Position = ;
while (ms.Position != ms.Length)
{
ms.Read(fileSize, , fileSize.Length);
int fileNameLength = BitConverter.ToInt32(fileSize, );
byte[] fileNameBytes = new byte[fileNameLength];
ms.Read(fileNameBytes, , fileNameBytes.Length);
string fileName = System.Text.Encoding.UTF8.GetString(fileNameBytes);
string fileFulleName = targetPath + fileName;
ms.Read(fileSize, , );
int fileContentLength = BitConverter.ToInt32(fileSize, );
byte[] fileContentBytes = new byte[fileContentLength];
ms.Read(fileContentBytes, , fileContentBytes.Length);
using (FileStream childFileStream = File.Create(fileFulleName))
{
childFileStream.Write(fileContentBytes, , fileContentBytes.Length);
}
}
}
}
}
}
}
}
调用示例：
List<string> strList = new List<string>() { @"D:\文档\soapUI工程\Synchro-soapui-project.xml", @"D:\文档\soapUI工程\PKBSML-soapui-project.xml", @"D:\文档\soapUI工程\PKBSML-soapui-project.xml" };
var zipHelper = new Test.Zip.CompressHelper();
zipHelper.CompressMulti(strList.ToArray(), @"D:\wulala.gz");
zipHelper.DeCompressMulti(@"D:\wulala.gz", @"D:\web\");