[ISSUE #9223] Pop consumer example add the default NamesrvAddr (#9224)

Author: 3424672656

example/src/main/java/org/apache/rocketmq/example/simple/PopConsumer.java

@@ -32,6 +32,7 @@
 public class PopConsumer {
     public static final String TOPIC = "TopicTest";
     public static final String CONSUMER_GROUP = "CID_JODIE_1";
+    public static final String NAMESRV_ADDR = "127.0.0.1:9876";
     public static void main(String[] args) throws Exception {
         switchPop();
         DefaultMQPushConsumer consumer = new DefaultMQPushConsumer(CONSUMER_GROUP);
@@ -44,12 +45,15 @@ public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> msgs, ConsumeCo
                 return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
             }
         });
+        // Uncomment the following line while debugging, namesrvAddr should be set to your local address
+        // consumer.setNamesrvAddr(NAMESRV_ADDR);
         consumer.setClientRebalance(false);
         consumer.start();
         System.out.printf("Consumer Started.%n");
     }
     private static void switchPop() throws Exception {
         DefaultMQAdminExt mqAdminExt = new DefaultMQAdminExt();
+        // mqAdminExt.setNamesrvAddr(NAMESRV_ADDR);
         mqAdminExt.start();
         List<BrokerData> brokerDatas = mqAdminExt.examineTopicRouteInfo(TOPIC).getBrokerDatas();
         for (BrokerData brokerData : brokerDatas) {