fix issue #3533 (#3548)

apache · Feb 24, 2019 · e89b3f2 · e89b3f2
1 parent 6b589f0
commit e89b3f2
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/...ookeeper/src/main/java/org/apache/dubbo/configcenter/support/zookeeper/CacheListener.java b/...ookeeper/src/main/java/org/apache/dubbo/configcenter/support/zookeeper/CacheListener.java
@@ -38,6 +38,8 @@
  *
  */
 public class CacheListener implements TreeCacheListener {
+    private static final byte[] EMPTY_BYTES = new byte[0];
+
     private Map<String, Set<ConfigurationListener>> keyListeners = new ConcurrentHashMap<>();
     private CountDownLatch initializedLatch;
     private String rootPath;
@@ -83,6 +85,9 @@ public void childEvent(CuratorFramework aClient, TreeCacheEvent event) throws Ex
                     return;
             }
 
+            if (value == null) {
+                value = EMPTY_BYTES;
+            }
             ConfigChangeEvent configChangeEvent = new ConfigChangeEvent(key, new String(value, StandardCharsets.UTF_8), changeType);
             Set<ConfigurationListener> listeners = keyListeners.get(key);
             if (CollectionUtils.isNotEmpty(listeners)) {