接口整理

jiangping

2023-10-11 8738b7aa54ebd8837e135bab88ea031b6ed788b0

 server/services/src/main/java/com/doumee/core/mqtt/config/MqttClientInit.java

@@ -5,9 +5,6 @@
import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
import org.eclipse.paho.client.mqttv3.MqttTopic;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;

public class MqttClientInit {
        static MqttClient client;
@@ -44,5 +41,37 @@
            }
            return  client;
        }
        public static synchronized MqttClient refreshClient(MqttConfig config,MqttPushCallback callBack){
            if(client !=null){
                return  client;
            }
            try {
                // host为主机名，clientid即连接MQTT的客户端ID，一般以唯一标识符表示，MemoryPersistence设置clientid的保存形式，默认为以内存保存
                client = new org.eclipse.paho.client.mqttv3.MqttClient(config.getHost(), config.getClientid() ,new MemoryPersistence());
                // MQTT的连接设置
                MqttConnectOptions   options = new MqttConnectOptions();
                // 设置是否清空session,这里如果设置为false表示服务器会保留客户端的连接记录，设置为true表示每次连接到服务器都以新的身份连接
                options.setCleanSession(false);
                // 设置连接的用户名
                options.setUserName(config.getUsername());
                // 设置连接的密码
                options.setPassword(config.getPassword().toCharArray());
                // 设置超时时间 单位为秒
                options.setConnectionTimeout(10);
                // 设置会话心跳时间 单位为秒 服务器会每隔1.5*20秒的时间向客户端发送个消息判断客户端是否在线，但这个方法并没有重连的机制
                options.setKeepAliveInterval(20);
                // 设置回调
                client.setCallback(callBack);
                //设置断开后重新连接
                options.setAutomaticReconnect(true);
                MqttTopic topic = client.getTopic(config.getClientid()+"_close");
                //遗嘱
                options.setWill(topic, "close".getBytes(), 1, true);
                client.connect(options);
            } catch (Exception e) {
                e.printStackTrace();
            }
            return  client;
        }

}