java/mx_charging_pile.git

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			package com.ruoyi.jianguan.mqtt.client;


			import com.ruoyi.jianguan.mqtt.callback.PushCallback;
			import lombok.extern.slf4j.Slf4j;
			import org.eclipse.paho.client.mqttv3.IMqttToken;
			import org.eclipse.paho.client.mqttv3.MqttClient;
			import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
			import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
			import org.springframework.context.annotation.Bean;
			import org.springframework.stereotype.Component;

			@Slf4j
			@Component
			public class ClientMQTT {
			private final static String HOST = "tcp://127.0.0.1:9882";
			private final static String USER_NAME = "admin";
			private final static String PASS_WORD = "mingxingdianli123";
			private static final String CLIENT_ID = String.valueOf(System.currentTimeMillis());
			private static final Integer TIME_OUT = 30000;
			private static final Integer KEEP_ALIVE = 30000;
			private MqttClient client;
			private MqttConnectOptions options;
			private void start() {
			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 MqttClient(HOST, CLIENT_ID, new MemoryPersistence());
			// MQTT的连接设置
			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，这里设置为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(USER_NAME);
			// 设置连接的密码
			options.setPassword(PASS_WORD.toCharArray());
			// 设置超时时间单位为秒
			options.setConnectionTimeout(TIME_OUT);
			// 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(KEEP_ALIVE);
			// automaticReconnect 为 true 表示断线自动重连，但仅仅只是重新连接，并不订阅主题；在 connectComplete 回调函数重新订阅
			options.setAutomaticReconnect(true);
			// 设置回调
			// 设置回调
			client.setCallback(new PushCallback());

			IMqttToken iMqttToken = client.connectWithResult(options);
			boolean complete = iMqttToken.isComplete();
			System.err.println("MQTT连接" + (complete ? "成功" : "失败"));
			} catch (Exception e) {
			e.printStackTrace();
			}
			}

			/**
			* 连接至mqtt服务器，获取mqtt连接
			*
			* @return
			*/
			// @Bean
			// public ClientMQTT getMqttPushClient() {
			// //连接至mqtt服务器，获取mqtt连接
			// this.start();
			// return this;
			// }
			}