zlib.Net的压缩和解压缩问题

我正在使用ZLIB.Net ，我只是不明白我该怎么做才能压缩不是FileStream的流，而是压缩MemoryStream 。 通过做：

 byte[] buffer = ASCIIEncoding.ASCII.GetBytes("Hello World"); MemoryStream outStream = new MemoryStream(); zlib.ZOutputStream outZStream = new zlib.ZOutputStream( outStream, zlib.zlibConst.Z_BEST_COMPRESSION); outZStream.Write(buffer, 0, buffer.Length); outZStream.finish(); buffer = outStream.GetBuffer(); Debug.WriteLine(DateTime.Now.ToString() + ":" + buffer.Length); MemoryStream inStream = new MemoryStream(buffer); MemoryStream mo = new MemoryStream(); zlib.ZInputStream inZStream = new zlib.ZInputStream( inStream, zlib.zlibConst.Z_BEST_COMPRESSION); int n = 0; while ((n = inZStream.Read(buffer, 0, buffer.Length)) > 0) { mo.Write(buffer, 0, n); } string STR = ASCIIEncoding.ASCII.GetString(mo.GetBuffer()); 

我无法获得字符串"Hello World" 。

Answer 1

longbkit ，谢谢你的参考。 那里有代码：

  public static void CompressData(byte[] inData, out byte[] outData) { using (MemoryStream outMemoryStream = new MemoryStream()) using (ZOutputStream outZStream = new ZOutputStream(outMemoryStream, zlibConst.Z_DEFAULT_COMPRESSION)) using (Stream inMemoryStream = new MemoryStream(inData)) { CopyStream(inMemoryStream, outZStream); outZStream.finish(); outData = outMemoryStream.ToArray(); } } public static void DecompressData(byte[] inData, out byte[] outData) { using (MemoryStream outMemoryStream = new MemoryStream()) using (ZOutputStream outZStream = new ZOutputStream(outMemoryStream)) using (Stream inMemoryStream = new MemoryStream(inData)) { CopyStream(inMemoryStream, outZStream); outZStream.finish(); outData = outMemoryStream.ToArray(); } } public static void CopyStream(System.IO.Stream input, System.IO.Stream output) { byte[] buffer = new byte[2000]; int len; while ((len = input.Read(buffer, 0, 2000)) > 0) { output.Write(buffer, 0, len); } output.Flush(); } 

有用。 但我所看到的是压缩和解压缩之间唯一的差异是ZOutput构造函数中的压缩类型…

惊人。 如果Compression在减压 – 输入时称为输出，那么对我来说会更清楚。 或者这样……实际上它只是输出。

❋用户“John Smith”破坏了原始代码，因为CopyTo不起作用并在其编辑的文本中引发exception（并且被其他人批准了两次……）。 通过OP恢复原始代码示例。 请在下次编辑前测试编辑过的代码，谢谢。