Logger para llamadas rest con spring

LoggingRequestInterceptor.java

package cl.tarjetacreditopac.restclient;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.http.HttpRequest;
import org.springframework.http.client.ClientHttpRequestExecution;
import org.springframework.http.client.ClientHttpRequestInterceptor;
import org.springframework.http.client.ClientHttpResponse;

/**
 * LoggingRequestInterceptor - para llamadas rest
 * 
 * @author ccontrerasc
 *
 */
public class LoggingRequestInterceptor implements ClientHttpRequestInterceptor {

	/**
	 * LOG
	 */
	private static final Log log = LogFactory.getLog(LoggingRequestInterceptor.class);

	/**
	 * intercept
	 */
	@Override
	public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution)
			throws IOException {
		traceRequest(request, body);
		ClientHttpResponse response = execution.execute(request, body);
		traceResponse(response);
		return response;
	}

	/**
	 * traceRequest
	 * 
	 * @param request
	 * @param body
	 * @throws IOException
	 */
	private void traceRequest(HttpRequest request, byte[] body) throws IOException {
		log.info("===========================request begin=============================================");
		log.info("URI          = " + request.getURI());
		log.info("Method       = " + request.getMethod());
		log.info("Headers      = " + request.getHeaders());
		log.info("Request body = " + new String(body, "UTF-8"));
		log.info("==========================request end================================================");
	}

	/**
	 * traceResponse
	 * 
	 * @param response
	 * @throws IOException
	 */
	private void traceResponse(ClientHttpResponse response) throws IOException {
		StringBuilder inputStringBuilder = new StringBuilder();
		BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(response.getBody(), "UTF-8"));
		String line = bufferedReader.readLine();
		while (line != null) {
			inputStringBuilder.append(line);
			inputStringBuilder.append('\n');
			line = bufferedReader.readLine();
		}
		log.info("============================response begin==========================================");
		log.info("Status code   = " + response.getStatusCode());
		log.info("Status text   = " + response.getStatusText());
		log.info("Headers       = " + response.getHeaders());
		log.info("Response body = " + inputStringBuilder.toString());
		log.info("=======================response end=================================================");
	}

}

LogRestSpring.java

/*
 * Instanciar el rest para obtener los detalles de la llamada
 */
RestTemplate restTemplate = new RestTemplate(new BufferingClientHttpRequestFactory(new SimpleClientHttpRequestFactory()));
List<ClientHttpRequestInterceptor> interceptors = new ArrayList<>();
interceptors.add(new LoggingRequestInterceptor());
restTemplate.setInterceptors(interceptors);