How to store an Http Response that may contain binary data?

Question

As I described in a previous question, I have an assignment to write a proxy server. It partially works now, but I still have a problem with handling of gzipped information.

Answer 1

Jersey — a high level web framework — may save your day. You don't have to manage gzip content, header, etc, yourself anymore.

The following code gets the image used for your example and save it to disk. Then it verifies the saved image is equal to the downloaded one:

import com.google.common.io.ByteStreams;
import com.google.common.io.Files;
import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.ClientResponse;

@Test
public void test() throws IOException {
    String filename = "ps_logo2.png";
    String url = "http://www.google.com/images/logos/" + filename;
    File file = new File(filename);

    WebResource resource = Client.create().resource(url);
    ClientResponse response = resource.get(ClientResponse.class);
    InputStream stream = response.getEntityInputStream();
    byte[] bytes = ByteStreams.toByteArray(stream);
    Files.write(bytes, file);

    assertArrayEquals(bytes, Files.toByteArray(file));
}

You will need two maven dependencies to run it:

    com.sun.jersey
    jersey-client
    1.6


    com.google.guava
    guava
    r08