使用SharpZipLib库将超大文件按指定大小分割压缩成多个压缩文件的操作步骤:
通过NuGet包管理器在C#项目中引用SharpZipLib库;
使用SharpZipLib库的ZipOutputStream类,创建一个新的ZIP文件,并将超大文件分割成多个压缩文件。使用Write方法将数据写入ZIP文件,并使用CloseEntry方法关闭每个分割文件的条目。
分割文件代码示例:
using ICSharpCode.SharpZipLib.Zip;
using System.IO;
public void SplitAndCompressFile(string sourceFilePath, string destinationFolderPath, int chunkSize)
{
using (FileStream sourceFile = File.OpenRead(sourceFilePath))
{
byte[] buffer = new byte[chunkSize];
int bytesRead;
int chunkNumber = 1;
while ((bytesRead = sourceFile.Read(buffer, 0, buffer.Length)) > 0)
{
string chunkFileName = Path.Combine(destinationFolderPath, $"chunk{chunkNumber}.zip");
using (FileStream destinationFile = File.Create(chunkFileName))
{
using (ZipOutputStream zipStream = new ZipOutputStream(destinationFile))
{
zipStream.PutNextEntry(new ZipEntry(Path.GetFileName(sourceFilePath)));
zipStream.Write(buffer, 0, bytesRead);
zipStream.CloseEntry();
}
}
chunkNumber++;
}
}
}
使用SharpZipLib库的ZipFile类将分割的压缩文件解压缩并合并为一个文件。
合并文件代码示例:
using ICSharpCode.SharpZipLib.Zip;
using System.IO;
public void MergeAndDecompressFiles(string sourceFolderPath, string destinationFilePath)
{
using (FileStream destinationFile = File.Create(destinationFilePath))
{
using (ZipOutputStream zipStream = new ZipOutputStream(destinationFile))
{
DirectoryInfo sourceFolder = new DirectoryInfo(sourceFolderPath);
FileInfo[] chunkFiles = sourceFolder.GetFiles("chunk*.zip");
foreach (FileInfo chunkFile in chunkFiles)
{
using (FileStream sourceFile = chunkFile.OpenRead())
{
using (ZipInputStream zipInput = new ZipInputStream(sourceFile))
{
ZipEntry entry = zipInput.GetNextEntry();
byte[] buffer = new byte[4096];
int bytesRead;
while ((bytesRead = zipInput.Read(buffer, 0, buffer.Length)) > 0)
{
zipStream.Write(buffer, 0, bytesRead);
}
}
}
}
}
}
}
示例演示如何使用SharpZipLib库进行文件分割和合并。需要根据具体需求进行适当的调整和错误处理。