DotNetZip を使用する場合、Save(stream) を呼び出す前に、最終的な zip ファイルのサイズを取得できますか? パッケージのストリーム サイズが 100MB を超えるアプリケーション (ウィンドウ サービス) があり、パッケージが保存され、今後のファイルが新しいパッケージに追加されます。
Web アプリケーションについて同じ質問を受けましたが、答えがわかりません。I/O システムに保存する前に、DotnetZip で zip ストリームのサイズを確認する方法はありますか?
質問する
7987 次
2 に答える
9
私は解決策を得ました。これがコードです。100MB未満のサイズのパッケージを作成します。
using System;
using System.Collections;
using System.IO;
using Ionic.Zip;
using Ionic.Zlib;
namespace ZipFileSize1
{
/// <summary>
/// This source code is generate the specified size Packages from the directory.
/// </summary>
class Program
{
/// <summary>
/// The size of Package(100MB).
/// </summary>
public static long m_packageSize = 1024 * 1024 * 100;
/// <summary>
/// Main method of program class.
/// </summary>
/// <param name="args">Command line argument</param>
static void Main(string[] args)
{
Console.WriteLine("Enter Directory Full Name for Compression : ");
var dir = Console.ReadLine();
Console.WriteLine("Zip File saved Location Directory Name : ");
var savedir = Console.ReadLine();
//generate the random zip files.
var zipFile = Path.Combine(savedir, DateTime.Now.Ticks + ".zip");
ZipFiles(dir, savedir);
Console.ReadLine();
}
/// <summary>
/// This method generate the package as per the <c>PackageSize</c> declare.
/// Currently <c>PackageSize</c> is 100MB.
/// </summary>
/// <param name="inputFolderPath">Input folder Path.</param>
/// <param name="outputFolderandFile">Output folder Path.</param>
public static void ZipFiles(string inputFolderPath, string outputFolderandFile)
{
ArrayList ar = GenerateFileList(inputFolderPath); // generate file list
int trimLength = (Directory.GetParent(inputFolderPath)).ToString().Length;
// find number of chars to remove // from original file path
trimLength += 1; //remove '\'
// Output file stream of package.
FileStream ostream;
byte[] obuffer;
// Output Zip file name.
string outPath = Path.Combine(outputFolderandFile, DateTime.Now.Ticks + ".zip");
ZipOutputStream oZipStream = new ZipOutputStream(File.Create(outPath), true); // create zip stream
// Compression level of zip file.
oZipStream.CompressionLevel = CompressionLevel.Default;
// Initialize the zip entry object.
ZipEntry oZipEntry = new ZipEntry();
// numbers of files in file list.
var counter = ar.Count;
try
{
using (ZipFile zip = new ZipFile())
{
Array.Sort(ar.ToArray()); // Sort the file list array.
foreach (string Fil in ar.ToArray()) // for each file, generate a zip entry
{
if (!Fil.EndsWith(@"/")) // if a file ends with '/' its a directory
{
if (!zip.ContainsEntry(Path.GetFullPath(Fil.ToString())))
{
oZipEntry = zip.AddEntry(Path.GetFullPath(Fil.ToString()), Fil.Remove(0, trimLength));
counter--;
try
{
if (counter > 0)
{
if (oZipStream.Position < m_packageSize)
{
oZipStream.PutNextEntry(oZipEntry.FileName);
ostream = File.OpenRead(Fil);
obuffer = new byte[ostream.Length];
ostream.Read(obuffer, 0, obuffer.Length);
oZipStream.Write(obuffer, 0, obuffer.Length);
}
if (oZipStream.Position > m_packageSize)
{
zip.RemoveEntry(oZipEntry);
oZipStream.Flush();
oZipStream.Close(); // close the zip stream.
outPath = Path.Combine(outputFolderandFile, DateTime.Now.Ticks + ".zip"); // create new output zip file when package size.
oZipStream = new ZipOutputStream(File.Create(outPath), true); // create zip stream
}
}
else
{
Console.WriteLine("No more file existed in directory");
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
zip.RemoveEntry(oZipEntry.FileName);
}
}
else
{
Console.WriteLine("File Existed {0} in Zip {1}", Path.GetFullPath(Fil.ToString()), outPath);
}
}
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
finally
{
oZipStream.Flush();
oZipStream.Close();// close stream
Console.WriteLine("Remain Files{0}", counter);
}
}
/// <summary>
/// This method return the list of files from the directory
/// Also read the child directory also, but not add the 0 length file.
/// </summary>
/// <param name="Dir">Name of directory.</param>
/// <returns>return the list of all files including into subdirectory files </returns>
private static ArrayList GenerateFileList(string Dir)
{
ArrayList fils = new ArrayList();
foreach (string file in Directory.GetFiles(Dir, "*.*", SearchOption.AllDirectories)) // add each file in directory
{
if (File.ReadAllBytes(file).Length > 0)
fils.Add(file);
}
return fils; // return file list
}
}
}
于 2012-06-01T11:20:43.640 に答える