docs 补充项目注释

ruoyi-common/ruoyi-common-mqtt/pom.xml

@@ -16,16 +16,19 @@
     </description>
 
     <dependencies>
+        <!-- 核心模块 -->
         <dependency>
             <groupId>org.dromara</groupId>
             <artifactId>ruoyi-common-core</artifactId>
         </dependency>
 
+        <!-- 序列化模块 -->
         <dependency>
             <groupId>org.dromara</groupId>
             <artifactId>ruoyi-common-json</artifactId>
         </dependency>
 
+        <!-- mqtt客户端 -->
         <dependency>
             <groupId>org.dromara.mica-mqtt</groupId>
             <artifactId>mica-mqtt-client-spring-boot-starter</artifactId>

ruoyi-common/ruoyi-common-mqtt/src/main/java/org/dromara/common/mqtt/config/MqttAutoConfiguration.java

@@ -31,11 +31,22 @@ import java.util.concurrent.TimeUnit;
 @ConditionalOnProperty(value = "mqtt.client.enabled", havingValue = "true")
 public class MqttAutoConfiguration {
 
+    /**
+     * 创建 MQTT 客户端连接监听器。
+     *
+     * @param mqttClientCreator MQTT 客户端创建器
+     * @return MQTT 客户端连接监听器
+     */
     @Bean
     public MqttClientConnectListener mqttClientConnectListener(MqttClientCreator mqttClientCreator) {
         return new MqttClientConnectListener(mqttClientCreator);
     }
 
+    /**
+     * 创建 MQTT 全局消息监听器。
+     *
+     * @return MQTT 全局消息监听器
+     */
     @Bean
     public MqttClientGlobalMessageListener mqttClientGlobalMessageListener() {
         return new MqttClientGlobalMessageListener();