How do you get logging from the CXF Rest Client? - rest

Question

This took me quite a long time to figure out. I'm asking this question so I can answer it for others:
How do you get useful logging info from the CXF Rest Client? EG: The url, params, payload, response, etc.
Note: This question already exists but it's asking about CXF and Resteasy. I only want the answer for CXF: Logging in CXF and RestEasy clients

Answer 1

Here's how you do it with CXF:
import com.fasterxml.jackson.jaxrs.json.JacksonJaxbJsonProvider;
import org.apache.cxf.interceptor.LoggingInInterceptor;
import org.apache.cxf.interceptor.LoggingOutInterceptor;
import org.apache.cxf.jaxrs.client.ClientConfiguration;
import org.apache.cxf.jaxrs.client.WebClient;
import org.json.JSONException;
import org.json.JSONObject;
...
WebClient client = WebClient.create(endPoint, providers).accept(MediaType.APPLICATION_JSON).type(MediaType.APPLICATION_JSON);
ClientConfiguration config = WebClient.getConfig(client);
config.getInInterceptors().add(new LoggingInInterceptor());
config.getOutInterceptors().add(new LoggingOutInterceptor());

Answer 2

Using the JAX-RS 2.0 client from CXF 3.1.x I am having some trouble getting the LoggingInInterceptor and LoggingOutInterceptor to work. I changed to use the LoggingFeature as described at http://cxf.apache.org/docs/message-logging.html and it worked first try:
Client client = ClientBuilder.newBuilder().register(LoggingFeature.class).build()

Answer 3

You can pass directly an instance of LoggingFeature to your client using the appropriate create() method.
Response response = WebClient
.create(baseAddress,
Arrays.<Object>asList(Arrays
.<Object>asList(new JacksonJsonProvider())),
Arrays.<Feature>asList(new LoggingFeature()), null)
.type(MediaType.APPLICATION_JSON)
.accept(MediaType.APPLICATION_JSON).path(path).post(request);