C# ZipOutputStream 从输出流中获取无效文件

Question

我一直在使用 C# 的 SharpZip 库（版本 0.86.0）。我基本上是用它把一些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;
    }

该函数适用于包含一项的文件。但是由于某种原因，当我有两个或更多时，当我转到 extract/open 时会出错。

PeaZip 说：

Archive is not readable

WinZip 说：

The compressed size stored in the local header for this file is not the same as the compressed size stored in the central header

但这是关键。 Windows 8 存档工具可以很好地处理文件。 WinZip 错误让我觉得我没有正确地将文件写入流。但我觉得很好。不知道该怎么做..

编辑

这是我对 codemonkeys 输入所做的更改。我看起来好多了，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;
    }

Answer 1

想通了！看来我设置 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。下面是最后的代码，供大家欣赏：

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;
    }

C# ZipOutputStream 从输出流中获取无效文件

C# ZipOutputStream getting invalid files from output stream

c#

zipoutputstream