Unexpected end of ZLIB input stream

Question

I'm trying to round-trip a JSON string to a byte array with DeflaterOutputStream, but the code below throwing java.io.EOFException: Unexpected end of ZLIB input stream.

It works when you replace the string with "Hello world", or if you remove a few characters from the string below.

Any ideas?

public static void main(String[] args) throws IOException {
    ByteArrayOutputStream bytes = new ByteArrayOutputStream();
    DeflaterOutputStream deflate = new DeflaterOutputStream(bytes, new Deflater(Deflater.BEST_COMPRESSION, true));
    OutputStreamWriter writer = new OutputStreamWriter(deflate);
    writer.write("[1,null,null,\"a\",null,null,null,null,[1,null,null,null,null,null,null,null,null,null,null,null,null,0.0,0.0,null,null]");
    writer.flush();
    writer.close();

    InflaterInputStream inflaterIn = new InflaterInputStream(new ByteArrayInputStream(bytes.toByteArray()), new Inflater(true));
    BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inflaterIn));
    System.out.println(bufferedReader.readLine());
}

Java version (OSX):

java version "1.6.0_26"
Java(TM) SE Runtime Environment (build 1.6.0_26-b03-383-11A511)
Java HotSpot(TM) 64-Bit Server VM (build 20.1-b02-383, mixed mode)

Answer 1

I had this problem and it was because i wasn't correctly closing my output streams.