duhenglucky commented on code in PR #482:
URL: https://github.com/apache/rocketmq-spring/pull/482#discussion_r963311499


##########
rocketmq-spring-boot/src/main/java/org/apache/rocketmq/spring/support/RocketMQUtil.java:
##########
@@ -326,4 +326,10 @@ public static DefaultLitePullConsumer 
createDefaultLitePullConsumer(String nameS
 
         return litePullConsumer;
     }
+
+    public static String getNamespace(String specifiedNamespace, String 
defaultNamespace) {
+        // prefer to use annotation namespace
+        // if is empty a default namespace will be used
+        return !StringUtils.hasLength(specifiedNamespace) && 
StringUtils.hasLength(defaultNamespace) ? defaultNamespace : specifiedNamespace;

Review Comment:
   How about using the _isBlank_ method to avoid the influence brought by 
whitespace?



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