diff --git a/mallchat-chat-server/src/main/java/com/abin/mallchat/common/chat/service/strategy/msg/TextMsgHandler.java b/mallchat-chat-server/src/main/java/com/abin/mallchat/common/chat/service/strategy/msg/TextMsgHandler.java
index 5b1662d..ca7e8c9 100644
--- a/mallchat-chat-server/src/main/java/com/abin/mallchat/common/chat/service/strategy/msg/TextMsgHandler.java
+++ b/mallchat-chat-server/src/main/java/com/abin/mallchat/common/chat/service/strategy/msg/TextMsgHandler.java
@@ -29,6 +29,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Optional;
+import java.util.stream.Collectors;
 
 /**
  * Description: 普通文本消息
@@ -68,9 +69,12 @@ public class TextMsgHandler extends AbstractMsgHandler {
             AssertUtil.equal(replyMsg.getRoomId(), request.getRoomId(), "只能回复相同会话内的消息");
         }
         if (CollectionUtil.isNotEmpty(body.getAtUidList())) {
-            List<Long> atUidList = body.getAtUidList();
+            //前端传入的@用户列表可能会重复，需要去重
+            List<Long> atUidList = body.getAtUidList().stream().distinct().collect(Collectors.toList());
             Map<Long, User> batch = userInfoCache.getBatch(atUidList);
-            AssertUtil.equal(atUidList.size(), batch.values().size(), "@用户不存在");
+            //如果@用户不存在，userInfoCache 返回的map中依然存在该key，但是value为null，需要过滤掉再校验
+            long batchCount = batch.values().stream().filter(Objects::nonNull).count();
+            AssertUtil.equal((long)atUidList.size(), batchCount, "@用户不存在");
             boolean atAll = body.getAtUidList().contains(0L);
             if (atAll) {
                 AssertUtil.isTrue(iRoleService.hasPower(uid, RoleEnum.CHAT_MANAGER), "没有权限");
diff --git a/mallchat-chat-server/src/main/java/com/abin/mallchat/common/user/service/cache/UserCache.java b/mallchat-chat-server/src/main/java/com/abin/mallchat/common/user/service/cache/UserCache.java
index 819773f..0705d17 100644
--- a/mallchat-chat-server/src/main/java/com/abin/mallchat/common/user/service/cache/UserCache.java
+++ b/mallchat-chat-server/src/main/java/com/abin/mallchat/common/user/service/cache/UserCache.java
@@ -39,6 +39,8 @@ public class UserCache {
     private RoleDao roleDao;
     @Autowired
     private UserRoleDao userRoleDao;
+    @Autowired
+    private UserSummaryCache userSummaryCache;
 
     public Long getOnlineNum() {
         String onlineKey = RedisKey.getKey(RedisKey.ONLINE_UID_ZET);
@@ -137,6 +139,8 @@ public class UserCache {
 
     public void userInfoChange(Long uid) {
         delUserInfo(uid);
+        //删除UserSummaryCache，前端下次懒加载的时候可以获取到最新的数据
+        userSummaryCache.delete(uid);
         refreshUserModifyTime(uid);
     }
 
diff --git a/mallchat-chat-server/src/main/java/com/abin/mallchat/common/websocket/NettyWebSocketServer.java b/mallchat-chat-server/src/main/java/com/abin/mallchat/common/websocket/NettyWebSocketServer.java
index 88780dd..ec24883 100644
--- a/mallchat-chat-server/src/main/java/com/abin/mallchat/common/websocket/NettyWebSocketServer.java
+++ b/mallchat-chat-server/src/main/java/com/abin/mallchat/common/websocket/NettyWebSocketServer.java
@@ -27,6 +27,7 @@ import javax.annotation.PreDestroy;
 @Configuration
 public class NettyWebSocketServer {
     public static final int WEB_SOCKET_PORT = 8090;
+    public static final NettyWebSocketServerHandler NETTY_WEB_SOCKET_SERVER_HANDLER = new NettyWebSocketServerHandler();
     // 创建线程池执行器
     private EventLoopGroup bossGroup = new NioEventLoopGroup(1);
     private EventLoopGroup workerGroup = new NioEventLoopGroup(NettyRuntime.availableProcessors());
@@ -90,7 +91,7 @@ public class NettyWebSocketServer {
                          */
                         pipeline.addLast(new WebSocketServerProtocolHandler("/"));
                         // 自定义handler ，处理业务逻辑
-                        pipeline.addLast(new NettyWebSocketServerHandler());
+                        pipeline.addLast(NETTY_WEB_SOCKET_SERVER_HANDLER);
                     }
                 });
         // 启动服务器，监听端口，阻塞直到启动成功
diff --git a/mallchat-chat-server/src/main/java/com/abin/mallchat/common/websocket/NettyWebSocketServerHandler.java b/mallchat-chat-server/src/main/java/com/abin/mallchat/common/websocket/NettyWebSocketServerHandler.java
index 040ee0b..2c258b8 100644
--- a/mallchat-chat-server/src/main/java/com/abin/mallchat/common/websocket/NettyWebSocketServerHandler.java
+++ b/mallchat-chat-server/src/main/java/com/abin/mallchat/common/websocket/NettyWebSocketServerHandler.java
@@ -7,6 +7,7 @@ import com.abin.mallchat.common.user.domain.enums.WSReqTypeEnum;
 import com.abin.mallchat.common.user.domain.vo.request.ws.WSAuthorize;
 import com.abin.mallchat.common.user.domain.vo.request.ws.WSBaseReq;
 import com.abin.mallchat.common.user.service.WebSocketService;
+import io.netty.channel.ChannelHandler.Sharable;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.SimpleChannelInboundHandler;
 import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;
@@ -17,6 +18,7 @@ import lombok.extern.slf4j.Slf4j;
 
 
 @Slf4j
+@Sharable
 public class NettyWebSocketServerHandler extends SimpleChannelInboundHandler<TextWebSocketFrame> {
 
     private WebSocketService webSocketService;
diff --git a/pom.xml b/pom.xml
index 2af5e0d..882baa0 100644
--- a/pom.xml
+++ b/pom.xml
@@ -49,11 +49,6 @@
 
     <dependencyManagement>
         <dependencies>
-            <dependency>
-                <groupId>com.abin.mallchat</groupId>
-                <artifactId>mallchat-common</artifactId>
-                <version>${version}</version>
-            </dependency>
             <dependency>
                 <groupId>com.abin.mallchat</groupId>
                 <artifactId>mallchat-common-starter</artifactId>