.NET GZipStream 压缩和解压

Question

下面这段代码有什么问题。我总是得到 FALSE，意思是压缩后，解压后的数据与原始值不匹配。

public static bool Test()
        {
            string sample = "This is a compression test of microsoft .net gzip compression method and decompression methods";
            System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
            byte[] data = encoding.GetBytes(sample);
            bool result = false;

            //Compress
            MemoryStream cmpStream;
            cmpStream = new MemoryStream();
            GZipStream hgs = new GZipStream(cmpStream, CompressionMode.Compress);
            hgs.Write(data, 0, data.Length);
            byte[] cmpData = cmpStream.ToArray();

            MemoryStream decomStream;
            decomStream = new MemoryStream(cmpData);
            hgs = new GZipStream(decomStream, CompressionMode.Decompress);
            hgs.Read(data, 0, data.Length);

            string sampleOut = System.BitConverter.ToString(data);

            result = String.Equals(sample, sampleOut) ;
            return result;
        }

如果您能指出我哪里出错了，我将不胜感激。

Answer 1

关闭 GZipStream后 Write称呼。

无需调用 Close ，有可能某些数据已被缓冲并且尚未写入底层流。