116 lines
3.9 KiB
Java
116 lines
3.9 KiB
Java
package com.whdc.mqtt;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.fasterxml.jackson.databind.node.ObjectNode;
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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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public class Pub {
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private final String clientId;
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private final String topic;
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public static String BROKER;
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private final int qos;
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private MqttClient client;
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private static final ObjectMapper objectMapper = new ObjectMapper();
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public Pub(String clientId, String topic) {
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this.clientId = clientId;
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this.topic = topic;
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this.qos = 0;
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}
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public Pub(String clientId, String topic, int qos) {
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this.clientId = clientId;
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this.topic = topic;
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this.qos = qos;
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}
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public void connect() throws MqttException {
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this.client = new MqttClient("tcp://120.24.5.249:3189", "mqttx_2b072a3c", new MemoryPersistence());
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MqttConnectOptions connOpts = new MqttConnectOptions();
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connOpts.setUserName(Config.USERNAME);
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connOpts.setPassword(Config.PASSWORD);
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connOpts.setCleanSession(true);
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this.client.connect(connOpts);
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}
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public void close() {
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try {
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this.client.disconnectForcibly(200);
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this.client.close(true);
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} catch (MqttException e) {
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e.printStackTrace();
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}
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}
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public void pub(String msg) throws MqttException {
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MqttMessage message = new MqttMessage(msg.getBytes());
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message.setQos(qos);
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this.client.publish(topic, message);
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}
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public static void main(String[] args) {
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try {
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// 创建发布者
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Pub publisher = new Pub("mqttx_2b072a3c", Config.TOPIC_WQ_R, 1);
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// 连接到MQTT Broker
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publisher.connect();
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System.out.println("MQTT发布者连接成功!");
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// 创建测试数据
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String[] testData = {
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createTestData("2025-11-20 10:00:00", "0000001", "61.3", "0.83", "1.4", "7.2"),
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createTestData("2025-11-20 11:00:00", "0000002", "54.2", "0.99", "1.3", "7.5"),
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// createTestData("2025-11-19 16:00:00", "0000003", "62.3", "0.78", "1.3", "7.5"),
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// createTestData("2025-11-19 17:00:00", "0000001", "59.9", "0.83", "1.3", "7.7"),
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// createTestData("2025-11-19 18:00:00", "0000002", "62.5", "0.85", "1.6", "7.8")
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};
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// 发送测试数据
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for (int i = 0; i < testData.length; i++) {
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String data = testData[i];
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publisher.pub(data);
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System.out.println("发送第 " + (i + 1) + " 条数据: " + data);
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// 间隔2秒发送一条
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Thread.sleep(2000);
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}
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System.out.println("所有测试数据发送完成!");
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// 保持连接，等待用户输入后关闭
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System.out.println("按回车键退出...");
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System.in.read();
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publisher.close();
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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private static String createTestData(String dataTime, String mn, String cod, String ad, String p, String ph) {
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try {
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ObjectNode json = objectMapper.createObjectNode();
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json.put("DataTime", dataTime);
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json.put("Mn", mn);
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json.put("CN", "2061");
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json.put("w01018", cod); // COD
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json.put("w21003", ad); // 氨氮
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json.put("w21011", p); // 总磷
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json.put("w01001", ph); // PH
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return json.toString();
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} catch (Exception e) {
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throw new RuntimeException("创建测试数据失败", e);
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}
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}
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}
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