java.io.IOException：未知格式

Question

I use the code below to decompress coming data that is arrived via socket.io .

When decompressing data which has been sent as compressed the code below works great. (Pseudo data which is sent from Node.js: <Buffer a8 b2 ...> )

However when decompressing data which has been sent in a JSONArray I get java.io.IOException: unknown format error. (Pseudo data which is sent from Node.js: [<Buffer a8 b2 ..>, <Buffer c4 f0 ..>] )

mSocket.on("fired", new Emitter.Listener() {
    @Override
    public void call(final Object... args) {
        JSONArray compressedDataArray = (JSONArray) args[0];
        byte[] compressedData = compressedDataArray.getString(0).toString().getBytes();
        String unzipped = new String(decompress(compressedData));
        Log.v("SAMPLE_TAG", "unzipped: " + unzipped) // LOGGING THE RESULT
    }
})


public byte[] decompress(byte[] data) throws IOException {
    ByteArrayOutputStream byteArrayOS = new ByteArrayOutputStream();
    GZIPInputStream gzipIS = new GZIPInputStream(new ByteArrayInputStream(data));

    byte[] buffer = new byte[1024];

    int len;
    while ((len = gzipIS.read(buffer)) > 0) {
      byteArrayOS.write(buffer, 0, len);
    }

    byteArrayOS.close();
    gzipIS.close();

    return byteArrayOS.toByteArray();
  }

Is there any chance to overcome this issue?

Answer 1

I've overcome this issue by changing the line below:

byte[] compressedData = compressedDataArray.getString(0).toString().getBytes();

changed as:

byte[] compressedData = (byte[]) compressedDataArray.get(0);

Then it works.