We have JAX RS implementation which needs to send back JSON output. But the response size is huge. And the client expects the same synchronously. Hence I tried to use StreamingOutput... but the client is not really getting the data in chunks. Below is sample snippet:

Server Side

streamingOutput = new StreamingOutput() {

    @Override
    public void write(OutputStream out) throws IOException, WebApplicationException {
        JsonGenerator jsonGenerator = mapper.getFactory().createGenerator(out);
        jsonGenerator.writeStartArray();
        for(int i=0; i < 10; i++) {
            jsonGenerator.writeStartObject();

            jsonGenerator.writeStringField("Response_State", "Response State - " + i);
            jsonGenerator.writeStringField("Response_Report", "Response Report - " + i);
            jsonGenerator.writeStringField("Error_details", "Error Details - " + i);

            jsonGenerator.writeEndObject();;
            jsonGenerator.flush();

            try {
                Thread.currentThread().sleep(2000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        jsonGenerator.writeEndArray();

        jsonGenerator.close();

    }
};

return Response.status(200).entity(streamingOutput).build();

Client

HttpClient client = HttpClientBuilder.create().build();
HttpPost post = new HttpPost("http://localhost:8080/AccessData/FetchReport");
post.setHeader("Content-type", "application/json");
ResponseHandler<HttpResponse> responseHandler = new BasicResponseHandler();
StringEntity entity = new StringEntity(jsonRequest); //jsonRequest is       request string
post.setEntity(entity);
HttpResponse response = client.execute(post);
BufferedReader buffReader = new BufferedReader(new      InputStreamReader(response.getEntity().getContent()));
JsonParser jsonParser = new JsonFactory().createParser(buffReader);
while(jsonParser.nextToken() != JsonToken.END_OBJECT) {
    System.out.println(jsonParser.getCurrentName() + ":" +      jsonParser.getCurrentValue());
}
String output;
while((output = buffReader.readLine()) != null) {
    System.out.println(output);
}

In the server side code, I am putting sleep call just to simulate a gap between chunks of data. What I need is that the client should receive chunks of data as and when it is thrown back by the server. But here the client gets the response in entirety always. Any possible solution?

Thanks in advance.