change printStackTrace to commons log statements

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/feign/SpringDecoder.java

@@ -23,6 +23,7 @@ import java.lang.reflect.Type;
 
 import javax.inject.Provider;
 
+import lombok.extern.apachecommons.CommonsLog;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.web.HttpMessageConverters;
 import org.springframework.http.HttpHeaders;
@@ -40,6 +41,7 @@ import static org.springframework.cloud.netflix.feign.FeignUtils.getHttpHeaders;
 /**
  * @author Spencer Gibb
  */
+@CommonsLog
 public class SpringDecoder implements Decoder {
 
 	@Autowired
@@ -91,7 +93,7 @@ public class SpringDecoder implements Decoder {
 				this.response.body().close();
 			}
 			catch (IOException ex) {
-				ex.printStackTrace();
+				log.error("Error closing response body", ex);
 			}
 		}
 

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/zuul/filters/post/SendResponseFilter.java

@@ -34,10 +34,12 @@ import com.netflix.zuul.ZuulFilter;
 import com.netflix.zuul.constants.ZuulConstants;
 import com.netflix.zuul.constants.ZuulHeaders;
 import com.netflix.zuul.context.RequestContext;
+import lombok.extern.apachecommons.CommonsLog;
 
 /**
  * @author Spencer Gibb
  */
+@CommonsLog
 public class SendResponseFilter extends ZuulFilter {
 
 	private static DynamicBooleanProperty INCLUDE_DEBUG_HEADER = DynamicPropertyFactory
@@ -157,7 +159,7 @@ public class SendResponseFilter extends ZuulFilter {
 			}
 			catch (IOException ex) {
 				// ignore
-				ex.printStackTrace();
+				log.debug("Error writing response", ex);
 			}
 			// doubles buffer size if previous read filled it
 			if (bytesRead == bytes.length) {

spring-cloud-netflix-hystrix-amqp/src/main/java/org/springframework/netflix/hystrix/amqp/HystrixStreamTask.java

@@ -84,7 +84,7 @@ public class HystrixStreamTask implements ApplicationContextAware {
 					this.channel.send(json);
 				}
 				catch (Exception ex) {
-					ex.printStackTrace();
+					log.error("Error sending json to channel", ex);
 				}
 			}
 		}

spring-cloud-netflix-hystrix-dashboard/src/main/java/org/springframework/cloud/netflix/hystrix/dashboard/HystrixDashboardConfiguration.java

@@ -49,6 +49,7 @@ import org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer;
  */
 @SuppressWarnings("deprecation")
 @Configuration
+@CommonsLog
 public class HystrixDashboardConfiguration {
 
 	private static final String DEFAULT_TEMPLATE_LOADER_PATH = "classpath:/templates/";
@@ -208,7 +209,7 @@ public class HystrixDashboardConfiguration {
 						is.close();
 					}
 					catch (Exception ex) {
-						// e.printStackTrace();
+						log.debug("Error closing input stream", ex);
 					}
 				}
 			}