Optimize the code: use logger instead of printStackTrace(). (apache#3202)

Author: zhaoyuguang

dubbo-common/src/main/java/org/apache/dubbo/common/utils/PojoUtils.java

@@ -16,6 +16,9 @@
  */
 package org.apache.dubbo.common.utils;
 
+import org.apache.dubbo.common.logger.Logger;
+import org.apache.dubbo.common.logger.LoggerFactory;
+
 import java.lang.reflect.Array;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
@@ -57,6 +60,7 @@
  */
 public class PojoUtils {
 
+    private static final Logger logger = LoggerFactory.getLogger(PojoUtils.class);
     private static final ConcurrentMap<String, Method> NAME_METHODS_CACHE = new ConcurrentHashMap<String, Method>();
     private static final ConcurrentMap<Class<?>, ConcurrentMap<String, Field>> CLASS_FIELD_CACHE = new ConcurrentHashMap<Class<?>, ConcurrentMap<String, Field>>();
 
@@ -457,9 +461,10 @@ private static Object realize0(Object pojo, Class<?> type, Type genericType, fin
                                 try {
                                     method.invoke(dest, value);
                                 } catch (Exception e) {
-                                    e.printStackTrace();
-                                    throw new RuntimeException("Failed to set pojo " + dest.getClass().getSimpleName() + " property " + name
-                                            + " value " + value + "(" + value.getClass() + "), cause: " + e.getMessage(), e);
+                                    String exceptionDescription = "Failed to set pojo " + dest.getClass().getSimpleName() + " property " + name
+                                            + " value " + value + "(" + value.getClass() + "), cause: " + e.getMessage();
+                                    logger.error(exceptionDescription, e);
+                                    throw new RuntimeException(exceptionDescription, e);
                                 }
                             } else if (field != null) {
                                 value = realize0(value, field.getType(), field.getGenericType(), history);

dubbo-container/dubbo-container-api/src/main/java/org/apache/dubbo/container/Main.java

@@ -88,7 +88,6 @@ public void run() {
             }
             System.out.println(new SimpleDateFormat("[yyyy-MM-dd HH:mm:ss]").format(new Date()) + " Dubbo service server started!");
         } catch (RuntimeException e) {
-            e.printStackTrace();
             logger.error(e.getMessage(), e);
             System.exit(1);
         }

dubbo-remoting/dubbo-remoting-netty4/src/main/java/org/apache/dubbo/remoting/transport/netty4/logging/MessageFormatter.java

@@ -16,6 +16,9 @@
  */
 package org.apache.dubbo.remoting.transport.netty4.logging;
 
+import org.apache.dubbo.common.logger.Logger;
+import org.apache.dubbo.common.logger.LoggerFactory;
+
 import java.text.MessageFormat;
 import java.util.HashMap;
 import java.util.Map;
@@ -86,6 +89,7 @@
  * {@link #arrayFormat(String, Object[])} methods for more details.
  */
 final class MessageFormatter {
+    private static final Logger logger = LoggerFactory.getLogger(MessageFormatter.class);
     static final char DELIM_START = '{';
     static final char DELIM_STOP = '}';
     static final String DELIM_STR = "{}";
@@ -279,7 +283,7 @@ private static void safeObjectAppend(StringBuffer sbuf, Object o) {
             System.err
                     .println("SLF4J: Failed toString() invocation on an object of type ["
                             + o.getClass().getName() + ']');
-            t.printStackTrace();
+            logger.error(t.getMessage(), t);
             sbuf.append("[FAILED toString()]");
         }
     }