diff --git a/ebike-gather/src/main/java/org/cdzy/gather/mqtt/MqttConnectionPool.java b/ebike-gather/src/main/java/org/cdzy/gather/mqtt/MqttConnectionPool.java
index b393b0c..55f3af7 100644
--- a/ebike-gather/src/main/java/org/cdzy/gather/mqtt/MqttConnectionPool.java
+++ b/ebike-gather/src/main/java/org/cdzy/gather/mqtt/MqttConnectionPool.java
@@ -44,6 +44,9 @@ public class MqttConnectionPool implements DisposableBean, InitializingBean {
         config.setMaxTotal(MqttConfig.getPoolMaxTotal());
         config.setMaxIdle(MqttConfig.getPoolMaxIdle());
         config.setMinIdle(MqttConfig.getPoolMinIdle());
+
+        config.setBlockWhenExhausted(true);      // 必须设置为 true
+        config.setMaxWaitMillis(5000);           // 等待5秒，不能无限等待
         
         // 启用空闲连接维护
         config.setTimeBetweenEvictionRuns(Duration.ofMinutes(5));
@@ -53,7 +56,7 @@ public class MqttConnectionPool implements DisposableBean, InitializingBean {
 
         config.setTestOnBorrow(false);
         config.setTestOnReturn(false);
-        config.setTestOnReturn(false);
+        config.setTestWhileIdle(true);           // 空闲时验证（保持连接健康）
         
         connectionPool = new GenericObjectPool<>(mqttConnectionFactory, config);
         
diff --git a/ebike-gather/src/main/java/org/cdzy/gather/mqtt/MqttHandler.java b/ebike-gather/src/main/java/org/cdzy/gather/mqtt/MqttHandler.java
index d2e426e..ca0d677 100644
--- a/ebike-gather/src/main/java/org/cdzy/gather/mqtt/MqttHandler.java
+++ b/ebike-gather/src/main/java/org/cdzy/gather/mqtt/MqttHandler.java
@@ -38,6 +38,7 @@ public class MqttHandler extends ChannelInboundHandlerAdapter {
                 case CONNACK:
                     // CONNACK已经在专门的handler中处理，这里不应该收到
                     log.warn("在MqttHandler中收到CONNACK，可能配置有误");
+                    handleConnAck(ctx,(MqttConnAckMessage)mqttMessage);
                     break;
                 case PUBLISH:
                     handlePublish(ctx, (MqttPublishMessage) mqttMessage);
@@ -46,7 +47,7 @@ public class MqttHandler extends ChannelInboundHandlerAdapter {
                     handlePubAck((MqttPubAckMessage) mqttMessage);
                     break;
                 case PINGRESP:
-                    log.debug("收到PING响应");
+//                    log.debug("收到PING响应");
                     break;
                 case SUBACK:
                     handleSubAck((MqttSubAckMessage) mqttMessage);
diff --git a/pom.xml b/pom.xml
index 999f208..89c5725 100644
--- a/pom.xml
+++ b/pom.xml
@@ -35,7 +35,6 @@
       <mybatis-flex.version>1.11.3</mybatis-flex.version>
       <mybatis.version>3.0.4</mybatis.version>
       <satoken.version>1.40.0</satoken.version>
-      <mysql.version>8.0.32</mysql.version>
       <HikariCP.version>5.0.1</HikariCP.version>
       <okhttp.version>4.12.0</okhttp.version>
       <minio.version>8.5.7</minio.version>
@@ -177,14 +176,6 @@
             <scope>import</scope>
          </dependency>
 
-         <dependency>
-            <groupId>com.mysql</groupId>
-            <artifactId>mysql-connector-j</artifactId>
-            <version>${mysql.version}</version>
-            <type>pom</type>
-            <scope>import</scope>
-         </dependency>
-
          <dependency>
             <groupId>org.springframework.data</groupId>
             <artifactId>spring-data-bom</artifactId>