Question

我正在使用ICSharpCode.SharpZipLib尝试从Web解压缩文件，我需要做的就是获取未压缩的字节数组。但是我收到错误“InvalidOperationException：无法从此流中读取”。我在Unity3D的c＃中工作，目标是webplayer。它显然是可读的，所以我不确定问题。这是我的代码，非常感谢任何帮助。

using (MemoryStream s = new MemoryStream(bytes))
{
    using (BinaryReader br = new BinaryReader(s))
    {               

        using (ICSharpCode.SharpZipLib.Zip.ZipInputStream zip = new ICSharpCode.SharpZipLib.Zip.ZipInputStream(s))
        {
            byte[] bytesUncompressed = new byte[32768];
            while (true)
            {
                Debug.Log("can read: " + zip.CanRead);
                int read = zip.Read(bytesUncompressed, 0, bytesUncompressed.Length);
                if (read <= 0)
                    break;
                zip.Write(bytesUncompressed, 0, read);
            }
        }
    }
}

Answer 1

我不清楚你如何填充你的流s，但你可能需要的只是在阅读之前回滚你的流的位置：

s.Seek(0, System.IO.SeekOrigin.Begin);

Answer 2

示例模式相当痛苦，让我给你一个“更好（tm）”模式来使用。

byte[] GetBytesFromCompressedStream(MemoryStream src)
{
    byte[] uncompressedBytes = null;

    using (MemoryStream dst = new MemoryStream())
    using (ICSharpCode.SharpZipLib.Zip.ZipInputStream zip = new ICSharpCode.SharpZipLib.Zip.ZipInputStream(src))
    {
        byte[] buffer = new byte[16 * 1024];
        int read = -1;

        while((read = zip.Read(buffer, 0, buffer.Length)) > 0)
        {
            dst.Write(buffer, 0, read);
        }

        uncompressedBytes = dst.ToArray();
    }

    return uncompressedBytes;
}

C＃SharpZipLib尝试在Unity3D中解压缩时无法读取流

2 个答案: