diff --git a/src/org/redkale/net/http/WebSocketNode.java b/src/org/redkale/net/http/WebSocketNode.java
index 3fdacea7f..a50e0fbf4 100644
--- a/src/org/redkale/net/http/WebSocketNode.java
+++ b/src/org/redkale/net/http/WebSocketNode.java
@@ -130,19 +130,8 @@ public abstract class WebSocketNode {
             CompletableFuture<Map<InetSocketAddress, List<String>>> future = null;
             for (final InetSocketAddress nodeAddress : addrs) {
                 CompletableFuture<Map<InetSocketAddress, List<String>>> mapFuture = getWebSocketAddresses(nodeAddress, groupid)
-                    .thenCompose((List<String> list) -> {
-                        Map<InetSocketAddress, List<String>> map = new HashMap<>();
-                        map.put(nodeAddress, list);
-                        return CompletableFuture.completedFuture(map);
-                    });
-                if (future == null) {
-                    future = mapFuture;
-                } else {
-                    future = future.thenCombine(mapFuture, (a, b) -> {
-                        a.putAll(b);
-                        return a;
-                    });
-                }
+                    .thenCompose((List<String> list) -> CompletableFuture.completedFuture(Utility.ofMap(nodeAddress, list)));
+                future = future == null ? mapFuture : future.thenCombine(mapFuture, (a, b) -> Utility.merge(a, b));
             }
             return future == null ? CompletableFuture.completedFuture(new HashMap<>()) : future;
         });
@@ -203,11 +192,8 @@ public abstract class WebSocketNode {
             CompletableFuture<Integer> future = null;
             for (InetSocketAddress addr : addrs) {
                 if (addr == null || addr.equals(localSncpAddress)) continue;
-                if (future == null) {
-                    future = remoteNode.sendMessage(addr, groupid, recent, message, last);
-                } else {
-                    future = future.thenCombine(remoteNode.sendMessage(addr, groupid, recent, message, last), (a, b) -> a | b);
-                }
+                future = future == null ? remoteNode.sendMessage(addr, groupid, recent, message, last)
+                    : future.thenCombine(remoteNode.sendMessage(addr, groupid, recent, message, last), (a, b) -> a | b);
             }
             return future == null ? CompletableFuture.completedFuture(0) : future;
         });
diff --git a/src/org/redkale/util/Utility.java b/src/org/redkale/util/Utility.java
index 7f0338853..3b4f11ed2 100644
--- a/src/org/redkale/util/Utility.java
+++ b/src/org/redkale/util/Utility.java
@@ -108,15 +108,38 @@ public final class Utility {
      * 将多个key:value对应值组合成一个Map，items长度必须是偶数, 参数个数若是奇数的话，最后一个会被忽略
      * 类似 JDK9中的 Map.of 方法
      *
+     * @param <K>   泛型
+     * @param <V>   泛型
      * @param items 键值对
      *
      * @return Map
      */
-    public static Map<Object, Object> ofMap(Object... items) {
-        HashMap<Object, Object> map = new LinkedHashMap<>();
+    public static <K, V> Map<K, V> ofMap(Object... items) {
+        HashMap<K, V> map = new LinkedHashMap<>();
         int len = items.length / 2;
         for (int i = 0; i < len; i++) {
-            map.put(items[i * 2], items[i * 2 + 1]);
+            map.put((K) items[i * 2], (V) items[i * 2 + 1]);
+        }
+        return map;
+    }
+
+    /**
+     * 将多个Map合并成一个Map
+     *
+     * @param <K>  泛型
+     * @param <V>  泛型
+     * @param maps Map
+     *
+     * @return Map
+     */
+    public static <K, V> Map<K, V> merge(Map<K, V>... maps) {
+        Map<K, V> map = null;
+        for (Map<K, V> m : maps) {
+            if (map == null) {
+                map = m;
+            } else if (m != null) {
+                map.putAll(m);
+            }
         }
         return map;
     }