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我一直在玩 C# 的 SharpZip 库(版本 0.86.0)。我基本上是用它将许多文件打包成一个干净的 zip 文件。这是我的函数生成 zip 文件的字节数组的样子:

public static byte[] CompressToZip(List<Tuple<byte[], string>> fileItemList, int zipLevel = 3)
{
        MemoryStream zipMemoryStream = new MemoryStream();

        ZipOutputStream zOutput = new ZipOutputStream(zipMemoryStream);
        zOutput.SetLevel(zipLevel);

        ICSharpCode.SharpZipLib.Checksums.Crc32 crc = new ICSharpCode.SharpZipLib.Checksums.Crc32();

        foreach (var file in fileItemList)
        {
            ZipEntry entry = new ZipEntry(file.Item2);
            entry.DateTime = DateTime.Now;
            entry.Size = file.Item1.Length;

            crc.Reset();
            crc.Update(file.Item1);

            entry.Crc = crc.Value;

            zOutput.PutNextEntry(entry);
            zOutput.Write(file.Item1, 0, file.Item1.Length);
        }

        zOutput.IsStreamOwner = false;
        zOutput.Finish();
        zOutput.Close();
        zipMemoryStream.Position = 0;

        byte[] zipedFile = zipMemoryStream.ToArray();
        return zipedFile;
    }

该功能适用​​于其中包含一项的文件。但是由于某种原因,当我有两个或更多时,当我去提取/打开它时会出错。

PeaZip 说:

存档不可读

WinZip 说:

此文件的本地标头中存储的压缩大小与中央标头中存储的压缩大小不同

但这是踢球者。Windows 8 存档工具可以很好地处理该文件。WinZip 错误让我觉得我将文件错误地写入流。但对我来说看起来不错。不知道该怎么做。。

编辑

这是我对 codemonkeys 输入的更改。对我来说看起来更好,但我仍然遇到同样的错误

public static byte[] CompressToZip(List<Tuple<byte[], string>> fileItemList, int zipLevel = 3)
{
        MemoryStream zipMemoryStream = new MemoryStream();

        ZipOutputStream zOutput = new ZipOutputStream(zipMemoryStream);
        zOutput.SetLevel(zipLevel);

        ICSharpCode.SharpZipLib.Checksums.Crc32 crc = new ICSharpCode.SharpZipLib.Checksums.Crc32();

        foreach (var file in fileItemList)
        {
            ZipEntry entry = new ZipEntry(file.Item2);
            entry.DateTime = DateTime.Now;
            entry.Size = file.Item1.Length;

            crc.Reset();
            crc.Update(file.Item1);

            entry.Crc = crc.Value;

            zOutput.PutNextEntry(entry);
            var memStreamCurrentfile = new MemoryStream(file.Item1);
            StreamUtils.Copy(memStreamCurrentfile, zOutput, new byte[4096]);
            zOutput.CloseEntry();
        }

        zOutput.IsStreamOwner = false;
        zOutput.Finish();
        zOutput.Close();
        zipMemoryStream.Position = 0;

        byte[] zipedFile = zipMemoryStream.ToArray();
        return zipedFile;
    }
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1 回答 1

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弄清楚了!似乎我设置了 Crc 和文件条目的大小是问题所在。我认为这将有助于定义这些。我想我错了。这是所有人都可以享受的最终代码:

public static byte[] CompressToZip(List<Tuple<byte[], string>> fileItemList, int zipLevel = 3)
    {
        MemoryStream zipMemoryStream = new MemoryStream();
        ZipOutputStream zOutput = new ZipOutputStream(zipMemoryStream);
        zOutput.SetLevel(zipLevel);
        ICSharpCode.SharpZipLib.Checksums.Crc32 crc = new ICSharpCode.SharpZipLib.Checksums.Crc32();
        foreach (var file in fileItemList)
        {
            ZipEntry entry = new ZipEntry(file.Item2);
            entry.DateTime = DateTime.Now;
            zOutput.PutNextEntry(entry);
            var memStreamCurrentfile = new MemoryStream(file.Item1);
            StreamUtils.Copy(memStreamCurrentfile, zOutput, new byte[4096]);
            zOutput.CloseEntry();
        }
        zOutput.IsStreamOwner = false;
        zOutput.Finish();
        zOutput.Close();
        zipMemoryStream.Position = 0;

        byte[] zipedFile = zipMemoryStream.ToArray();
        return zipedFile;
    }
于 2015-01-03T20:34:51.060 回答