package com.zy.sc.common.mqtt;
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import org.eclipse.paho.client.mqttv3.MqttClient;
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import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
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import org.eclipse.paho.client.mqttv3.MqttException;
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import org.eclipse.paho.client.mqttv3.MqttMessage;
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import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
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/**
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* Created by vincent on 2021/9/15
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*/
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public class PublishSample {
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public static void main(String[] args) {
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String topic = "CROSSWALK_DOWN_TEST_866156056763090";
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// String content = "{\"event\":\"lbs\",\"serial\":\"903597431105519616\"}";
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String content = "hello world";
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int qos = 0;
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String broker = "tcp://iot.emperyland.com:61613";
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String userName = "admin";
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String password = "xltys1995";
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String clientId = "dz-admin1";
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// 内存存储
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MemoryPersistence persistence = new MemoryPersistence();
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try {
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// 创建客户端
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MqttClient sampleClient = new MqttClient(broker, clientId, persistence);
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// 创建链接参数
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MqttConnectOptions connOpts = new MqttConnectOptions();
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// 在重新启动和重新连接时记住状态
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connOpts.setCleanSession(false);
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// 设置连接的用户名
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connOpts.setUserName(userName);
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connOpts.setPassword(password.toCharArray());
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// 建立连接
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sampleClient.connect(connOpts);
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// 创建消息
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MqttMessage message = new MqttMessage(content.getBytes());
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// 设置消息的服务质量
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message.setQos(qos);
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// 发布消息
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sampleClient.publish(topic, message);
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// 断开连接
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sampleClient.disconnect();
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// 关闭客户端
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sampleClient.close();
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} catch (MqttException me) {
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System.out.println("reason " + me.getReasonCode());
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System.out.println("msg " + me.getMessage());
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System.out.println("loc " + me.getLocalizedMessage());
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System.out.println("cause " + me.getCause());
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System.out.println("excep " + me);
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me.printStackTrace();
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}
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}
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}
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