diff --git a/spring-boot-demo-websocket-socketio/src/main/java/com/xkcoding/websocket/socketio/config/Event.java b/spring-boot-demo-websocket-socketio/src/main/java/com/xkcoding/websocket/socketio/config/Event.java
index 99ee6a7..75caa7f 100644
--- a/spring-boot-demo-websocket-socketio/src/main/java/com/xkcoding/websocket/socketio/config/Event.java
+++ b/spring-boot-demo-websocket-socketio/src/main/java/com/xkcoding/websocket/socketio/config/Event.java
@@ -19,16 +19,6 @@ public interface Event {
      */
     String CHAT = "chat" ;
 
-    /**
-     * 收到消息
-     */
-    String CHAT_RECEIVED = "chat_received" ;
-
-    /**
-     * 拒收消息
-     */
-    String CHAT_REFUSED = "chat_refused" ;
-
     /**
      * 广播消息
      */
diff --git a/spring-boot-demo-websocket-socketio/src/main/java/com/xkcoding/websocket/socketio/config/ServerConfig.java b/spring-boot-demo-websocket-socketio/src/main/java/com/xkcoding/websocket/socketio/config/ServerConfig.java
index d61be0d..8baccc1 100644
--- a/spring-boot-demo-websocket-socketio/src/main/java/com/xkcoding/websocket/socketio/config/ServerConfig.java
+++ b/spring-boot-demo-websocket-socketio/src/main/java/com/xkcoding/websocket/socketio/config/ServerConfig.java
@@ -9,11 +9,11 @@ import org.springframework.context.annotation.Configuration;
 
 /**
  * <p>
- * 服务器配置
+ * websocket服务器配置
  * </p>
  *
  * @package: com.xkcoding.websocket.socketio.config
- * @description: 服务器配置
+ * @description: websocket服务器配置
  * @author: yangkai.shen
  * @date: Created in 2018-12-18 16:42
  * @copyright: Copyright (c) 2018
diff --git a/spring-boot-demo-websocket-socketio/src/main/java/com/xkcoding/websocket/socketio/handler/MessageEventHandler.java b/spring-boot-demo-websocket-socketio/src/main/java/com/xkcoding/websocket/socketio/handler/MessageEventHandler.java
index 3f7b530..3610115 100644
--- a/spring-boot-demo-websocket-socketio/src/main/java/com/xkcoding/websocket/socketio/handler/MessageEventHandler.java
+++ b/spring-boot-demo-websocket-socketio/src/main/java/com/xkcoding/websocket/socketio/handler/MessageEventHandler.java
@@ -1,5 +1,6 @@
 package com.xkcoding.websocket.socketio.handler;
 
+import cn.hutool.core.lang.Dict;
 import cn.hutool.core.util.ObjectUtil;
 import com.corundumstudio.socketio.AckRequest;
 import com.corundumstudio.socketio.SocketIOClient;
@@ -106,9 +107,11 @@ public class MessageEventHandler {
         if (toUser.isPresent()) {
             log.info("用户 {} 刚刚私信了用户 {}：{}", data.getFromUid(), data.getToUid(), data.getMessage());
             sendToSingle(toUser.get(), data);
-            client.sendEvent(Event.CHAT_RECEIVED, "发送成功");
+            request.sendAckData(Dict.create().set("flag", true).set("message", "发送成功"));
         } else {
-            client.sendEvent(Event.CHAT_REFUSED, "发送失败，对方不想理你");
+            request.sendAckData(Dict.create()
+                    .set("flag", false)
+                    .set("message", "发送失败，对方不想理你(" + data.getToUid() + "不在线)"));
         }
     }
 
diff --git a/spring-boot-demo-websocket-socketio/src/main/resources/static/index.html b/spring-boot-demo-websocket-socketio/src/main/resources/static/index.html
index 48a16ff..1e6db31 100644
--- a/spring-boot-demo-websocket-socketio/src/main/resources/static/index.html
+++ b/spring-boot-demo-websocket-socketio/src/main/resources/static/index.html
@@ -62,14 +62,6 @@
             output(`<span class="username-msg">系统通知: 收到来自 ${data.fromUid} 的悄悄话: ${data.message}</span>`);
         });
 
-        socket.on('chat_received', function (data) {
-            output(`<span class="username-msg">系统通知: 悄悄话, ${data}</span>`);
-        });
-
-        socket.on('chat_refused', function (data) {
-            output(`<span class="username-msg">系统通知: 悄悄话, ${data}</span>`);
-        });
-
         socket.on('group', function (data) {
             output(`<span class="username-msg">${data.groupId} 群消息: ${data.fromUid} 说: ${data.message}</span>`);
         });
@@ -153,8 +145,13 @@
                 toUid: toUserId,
                 message: message
             };
-            socket.emit('chat', singleRequest, function () {
+            socket.emit('chat', singleRequest, function (data) {
                 output(`<span class="username-msg">系统通知: 你刚刚和 ${singleRequest.toUid} 说了句悄悄话</span>`);
+                if (data && data.flag) {
+                    output(`<span class="username-msg">系统通知: 悄悄话, ${data.message}</span>`);
+                } else {
+                    output(`<span class="disconnect-msg">系统通知: 悄悄话, ${data.message}</span>`);
+                }
             });
         }