好吧，我讨厌在有大量现有答案的情况下插话，但不幸的是，由于各种原因，大多数答案都是错误的：

GZIP

• 在.NET框架内的算法之间存在差异。如果你正在使用.NET 4.5，你在不同答案中看到的大多数抱怨根本不适用于你(而是那些使用2.0或3.5的人)。如果你使用“修复”版本的代码，你实际上会搞乱compression/decompression.

• Java使用无符号的byte[]，.NET使用有符号的byte[]。这可能会在传输过程中造成问题，这取决于您传输byte[]的确切方式。

• 我曾使用Base64传输byte[]，这可能会带来更多问题。还有很多其他原因，但让我们跳过更多的抱怨，开始代码吧……

如果你使用的是.NET Framework4.5，这里是你需要的C#类(Base64作为奖励)：

public class CompressString
    private static void CopyTo(Stream src, Stream dest)
        byte[] bytes = new byte[4096];
        int cnt;
        while ((cnt = src.Read(bytes, 0, bytes.Length)) != 0)
            dest.Write(bytes, 0, cnt);
    public static byte[] Zip(string str)
        var bytes = Encoding.UTF8.GetBytes(str);
        using (var msi = new MemoryStream(bytes))
        using (var mso = new MemoryStream())
            using (var gs = new GZipStream(mso, CompressionMode.Compress))
                //msi.CopyTo(gs);
                CopyTo(msi, gs);
            return mso.ToArray();
    public static string Unzip(byte[] bytes)
        using (var msi = new MemoryStream(bytes))
        using (var mso = new MemoryStream())
            using (var gs = new GZipStream(msi, CompressionMode.Decompress))
                //gs.CopyTo(mso);
                CopyTo(gs, mso);
            return Encoding.UTF8.GetString(mso.ToArray());
    // Base64
    public static string ZipBase64(string compress)
        var bytes = Zip(compress);
        var encoded = Convert.ToBase64String(bytes, Base64FormattingOptions.None);
        return encoded;
    public static string UnzipBase64(string compressRequest)
        var bytes = Convert.FromBase64String(compressRequest);
        var unziped = Unzip(bytes);
        return unziped;
    // Testing
    public static bool TestZip(String stringToTest)
        byte[] compressed = Zip(stringToTest);
        Debug.WriteLine("Compressed to " + compressed.Length + " bytes");
        String decompressed = Unzip(compressed);
        Debug.WriteLine("Decompressed to: " + decompressed);
        return stringToTest == decompressed;
}

下面是您需要的Android/Java类：

public class CompressString {
    public static byte[] compress(String string) {
        try {
            ByteArrayOutputStream os = new ByteArrayOutputStream(string.length());
            GZIPOutputStream gos = new GZIPOutputStream(os);
            gos.write(string.getBytes());
            gos.close();
            byte[] compressed = os.toByteArray();
            os.close();
            return compressed;
        } catch (IOException ex) {
            return null;
    public static String decompress(byte[] compressed) {
        try {
            final int BUFFER_SIZE = 32;
            ByteArrayInputStream is = new ByteArrayInputStream(compressed);
            GZIPInputStream gis = new GZIPInputStream(is, BUFFER_SIZE);
            byte[] data = new byte[BUFFER_SIZE];
            int bytesRead;
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            while ((bytesRead = gis.read(data)) != -1) {
                baos.write(data, 0, bytesRead);
            gis.close();
            is.close();
            return baos.toString("UTF-8");
        } catch (IOException ex) {
            return null;
    // Base64
    public static String compressBase64(String strToCompress) {
        byte[] compressed = compress(strToCompress);
        String encoded = android.util.Base64.encodeToString(compressed, android.util.Base64.NO_WRAP);
        return encoded;
    public static String decompressBase64(String strEncoded) {
        byte[] decoded = android.util.Base64.decode(strEncoded, android.util.Base64.NO_WRAP);
        String decompressed = decompress(decoded);
        return decompressed;
    // test
    public static boolean testCompression(String stringToTest) {
        byte[] compressed = compress(stringToTest);
        Log.d("compress-test", "Compressed to " + compressed.length + " bytes");
        String decompressed = decompress(compressed);
        Log.d("compress-test", "Decompressed to " + decompressed);
        return stringToTest.equals(decompressed);
}

至此，你就有了无依赖、100%工作压缩的Android/Java/C#/.NET类。如果你发现 不适用于.NET 4.5 (我已经尝试了从"Hello world“到1000字短篇小说的所有方法)--让我知道。