How can I view the actual request that Jersey generates and sends to the server? I am having issues with a particular request and the fellow running the webserver asked to see the full request (with headers and the such).

1

5 Answers

If you're just using Jersey Client API, LoggingFilter (client filter) should help you:

Client client = Client.create();
client.addFilter(new LoggingFilter(System.out));
WebResource webResource = client.resource("");
ClientResponse response = webResource.accept(MediaType.APPLICATION_JSON) .get(ClientResponse.class);

Otherwise, you can again log both request and response on server using other LoggingFilter (container filter).

3

Since Jersey 2.23, there's a LoggingFeature you could use. The following is a bit simplified example, please note that you can register the feature on WebTarget as well.

Logger logger = Logger.getLogger(getClass().getName());
Feature feature = new LoggingFeature(logger, Level.INFO, null, null);
Client client = ClientBuilder.newBuilder() .register(feature) .build();
Response response = client.target("") .queryParam("q", "Hello, World!") .request().get();

JavaDoc of LoggingFeature says that the request "and/or" the response is logged lol. On my machine, both are logged.

3

@ivan.cikic's answer is for Jersey 1.x. Here's how you do it in Jersey 2.x:

import org.glassfish.jersey.client.ClientConfig;
import org.glassfish.jersey.filter.LoggingFilter;
import org.json.JSONException;
import org.json.JSONObject;
import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.Entity;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.Form;
import javax.ws.rs.core.MediaType;
... ClientConfig config = new ClientConfig(); Client client = ClientBuilder.newClient(config); client.register(new LoggingFilter());

This is irrelevant but I just have to complain: The new LoggingFilter is really annoying because it forces you to use Java Util Logging. It would be better if it gave me control over the logger. Seems like a step backwards in design.

3

All these answers are pretty close but they lack the setting to log the request and response body. At least with Jersey 2.30.1 this is how I accomplish logging the request and response including their respective bodies:

import javax.ws.rs.client.ClientBuilder;
import org.glassfish.jersey.logging.LoggingFeature;
import java.util.logging.Level;
import java.util.logging.Logger;
Logger logger = Logger.getLogger("LoggingFeature");
logger.setLevel(Level.ALL);
ClientBuilder.newClient() .target("") .register(new LoggingFeature( logger, Level.ALL, LoggingFeature.Verbosity.PAYLOAD_ANY, 8192)) .request() .get();

Technically the Level.All and 8192 values could be null. I just provide them here to be concise.

For version 3.1.X it must be:

Logger logger = Logger.getLogger("test");
LoggingFeature loggingFeature = new LoggingFeature(logger, Level.INFO, Verbosity.PAYLOAD_ANY,null);
Client client = ClientBuilder.newClient();
client.register(loggingFeature);

Level.ALL is NOT Working

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