搞懂C#文件壓縮：SharpZipLib vs. DotNetZip，實用代碼一網打盡！
作者：架構師老盧
在C#中，有兩個熱門的文件壓縮解析類庫分別是SharpZipLib和DotNetZip。以下是它們的簡要介紹以及使用實例代碼。
1. SharpZipLib
功能：
- 支持ZIP和GZip格式的壓縮和解壓縮。
- 提供了對Tar和BZip2格式的支持。
- 輕量級，易于使用。
優點：
- 開源，廣泛使用。
- 靈活性較高，適用于多種壓縮需求。
使用實例：
using System;
using ICSharpCode.SharpZipLib.Zip;
class Program
{
static void Main()
{
string sourceFolder = @"C:\Path\To\Your\Folder";
string zipFile = @"C:\Path\To\Your\Archive.zip";
ZipDirectory(sourceFolder, zipFile);
Console.WriteLine("Compression completed.");
string extractFolder = @"C:\Path\To\Your\Extracted";
UnzipFile(zipFile, extractFolder);
Console.WriteLine("Extraction completed.");
}
static void ZipDirectory(string sourceFolder, string zipFile)
{
using (ZipOutputStream zipStream = new ZipOutputStream(System.IO.File.Create(zipFile)))
{
zipStream.SetLevel(9); // 0 - store only to 9 - means best compression
ZipFolder(sourceFolder, sourceFolder, zipStream);
zipStream.Finish();
zipStream.Close();
}
}
static void ZipFolder(string rootFolder, string currentFolder, ZipOutputStream zipStream)
{
string[] files = System.IO.Directory.GetFiles(currentFolder);
foreach (string file in files)
{
ZipFile(zipStream, currentFolder, file);
}
string[] subFolders = System.IO.Directory.GetDirectories(currentFolder);
foreach (string folder in subFolders)
{
ZipFolder(rootFolder, folder, zipStream);
}
}
static void ZipFile(ZipOutputStream zipStream, string rootFolder, string filePath)
{
byte[] buffer = new byte[4096];
string relativePath = filePath.Substring(rootFolder.Length + 1);
ZipEntry entry = new ZipEntry(relativePath);
zipStream.PutNextEntry(entry);
using (System.IO.FileStream fs = System.IO.File.OpenRead(filePath))
{
int sourceBytes;
do
{
sourceBytes = fs.Read(buffer, 0, buffer.Length);
zipStream.Write(buffer, 0, sourceBytes);
} while (sourceBytes > 0);
}
}
static void UnzipFile(string zipFile, string extractFolder)
{
using (ZipInputStream zipStream = new ZipInputStream(System.IO.File.OpenRead(zipFile)))
{
ZipEntry entry;
while ((entry = zipStream.GetNextEntry()) != null)
{
string entryName = entry.Name;
string fullZipToPath = System.IO.Path.Combine(extractFolder, entryName);
string directoryName = System.IO.Path.GetDirectoryName(fullZipToPath);
if (directoryName.Length > 0)
{
System.IO.Directory.CreateDirectory(directoryName);
}
if (entry.IsFile)
{
byte[] buffer = new byte[4096];
using (System.IO.FileStream streamWriter = System.IO.File.Create(fullZipToPath))
{
int sourceBytes;
do
{
sourceBytes = zipStream.Read(buffer, 0, buffer.Length);
streamWriter.Write(buffer, 0, sourceBytes);
} while (sourceBytes > 0);
}
}
}
}
}
}2. DotNetZip
功能：
- 支持ZIP格式的壓縮和解壓縮。
- 提供了對多卷和自解壓縮ZIP文件的支持。
- 具有更簡單的API，易于使用。
優點：
- 使用方便，簡潔明了。
- 集成度高，適合快速實現文件壓縮解壓縮功能。
使用實例：
using System;
using Ionic.Zip;
class Program
{
static void Main()
{
string sourceFolder = @"C:\Path\To\Your\Folder";
string zipFile = @"C:\Path\To\Your\Archive.zip";
ZipDirectory(sourceFolder, zipFile);
Console.WriteLine("Compression completed.");
string extractFolder = @"C:\Path\To\Your\Extracted";
UnzipFile(zipFile, extractFolder);
Console.WriteLine("Extraction completed.");
}
static void ZipDirectory(string sourceFolder, string zipFile)
{
using (ZipFile zip = new ZipFile())
{
zip.AddDirectory(sourceFolder);
zip.Save(zipFile);
}
}
static void UnzipFile(string zipFile, string extractFolder)
{
using (ZipFile zip = ZipFile.Read(zipFile))
{
zip.ExtractAll(extractFolder, ExtractExistingFileAction.OverwriteSilently);
}
}
}以上兩個例子都提供了基本的目錄壓縮和解壓縮功能，你可以根據具體需求進行進一步定制。確保在實際項目中進行充分的測試和適當的錯誤處理。
責任編輯：姜華
來源：
今日頭條
