Skip to content

Latest commit

 

History

History
188 lines (154 loc) · 7.27 KB

File metadata and controls

188 lines (154 loc) · 7.27 KB

mica-mqtt-client-solon-plugin 使用文档

本插件基于 https://gitee.com/peigenlpy/mica-mqtt-solon-plugin 调整合并到官方(已经过作者同意)。

一、添加依赖

<dependency>
    <groupId>net.dreamlu</groupId>
    <artifactId>mica-mqtt-client-solon-plugin-parent</artifactId>
    <version>${version}</version>
</dependency>

二、mqtt 客户端

2.1 配置项示例

mqtt:
  client:
    enabled: true               # 是否开启客户端,默认:true
    ip: 127.0.0.1               # 连接的服务端 ip ,默认:127.0.0.1
    port: 1883                  # 端口:默认:1883
    name: Mica-Mqtt-Client      # 名称,默认:Mica-Mqtt-Client
    clientId: 000001            # 客户端Id(非常重要,一般为设备 sn,不可重复)
    user-name: mica             # 认证的用户名
    password: 123456            # 认证的密码
    timeout: 5                  # 超时时间,单位:秒,默认:5秒
    reconnect: true             # 是否重连,默认:true
    re-interval: 5000           # 重连时间,默认 5000 毫秒
    version: mqtt_3_1_1         # mqtt 协议版本,可选 MQTT_3_1、mqtt_3_1_1、mqtt_5,默认:mqtt_3_1_1
    read-buffer-size: 8KB       # 接收数据的 buffer size,默认:8k
    max-bytes-in-message: 10MB  # 消息解析最大 bytes 长度,默认:10M
    buffer-allocator: heap      # 堆内存和堆外内存,默认:堆内存
    keep-alive-secs: 60         # keep-alive 时间,单位:秒
    clean-session: true         # mqtt clean session,默认:true
    ssl:
      enabled: false            # 是否开启 ssl 认证,2.1.0 开始支持双向认证
      keystore-path:            # 可选参数:ssl 双向认证 keystore 目录,支持 classpath:/ 路径。
      keystore-pass:            # 可选参数:ssl 双向认证 keystore 密码
      truststore-path:          # 可选参数:ssl 双向认证 truststore 目录,支持 classpath:/ 路径。
      truststore-pass:          # 可选参数:ssl 双向认证 truststore 密码

注意:ssl 存在三种情况

服务端开启ssl 客户端
ClientAuth 为 NONE(不需要客户端验证) 仅仅需要开启 ssl 即可不用配置证书
ClientAuth 为 OPTIONAL(与客户端协商) 需开启 ssl 并且配置 truststore 证书
ClientAuth 为 REQUIRE (必须的客户端验证) 需开启 ssl 并且配置 truststore、 keystore证书

2.2 可实现接口(注册成 Solon Bean 即可)

接口 是否必须 说明
IMqttClientConnectListener 客户端连接成功监听

2.3 客户端上下线监听

使用 Solon event 解耦客户端上下线监听,注意: 会跟自定义的 IMqttClientConnectListener 实现冲突,取一即可。

@Component
public class MqttClientConnectedListener implements EventListener<MqttConnectedEvent> {
    private static final Logger logger = LoggerFactory.getLogger(MqttClientConnectedListener.class);

    @Inject
    private MqttClientCreator mqttClientCreator;

    @Override
    public void onEvent(MqttConnectedEvent mqttConnectedEvent) throws Throwable {
        logger.info("MqttConnectedEvent:{}", mqttConnectedEvent);
    }
}
@Component
public class MqttClientDisconnectListener implements EventListener<MqttDisconnectEvent> {
	private static final Logger logger = LoggerFactory.getLogger(MqttClientDisconnectListener.class);

	@Inject
	private MqttClientCreator mqttClientCreator;

	@Override
	public void onEvent(MqttDisconnectEvent mqttDisconnectEvent) throws Throwable {
			logger.info("MqttDisconnectEvent:{}", mqttDisconnectEvent);
			// 在断线时更新 clientId、username、password
			mqttClientCreator.clientId("newClient" + System.currentTimeMillis())
				.username("newUserName")
				.password("newPassword");
	}
}

2.4 自定义 java 配置(可选)

@Configuration
public class MqttClientCustomizerConfiguration {

	@Bean
	public MqttClientCustomizer mqttClientCustomizer() {
		return new MqttClientCustomizer() {
			@Override
			public void customize(MqttClientCreator creator) {
				// 此处可自定义配置 creator,会覆盖 yml 中的配置
				System.out.println("----------------MqttServerCustomizer-----------------");
			}
		};
	}

}

2.5 订阅示例

/**
 * 客户端消息监听
 */
@Component
public class MqttClientSubscribeListener {
    private static final Logger logger = LoggerFactory.getLogger(MqttClientSubscribeListener.class);

    @MqttClientSubscribe("/test/#")
    public void subQos0(String topic, byte[] payload) {
        logger.info("subQos0,topic:{} payload:{}", topic, new String(payload, StandardCharsets.UTF_8));
    }

    @MqttClientSubscribe(value = "/qos1/#", qos = MqttQoS.AT_LEAST_ONCE)
    public void subQos1(String topic, byte[] payload) {
        logger.info("topic:{} payload:{}", topic, new String(payload, StandardCharsets.UTF_8));
    }

    @MqttClientSubscribe("/sys/${productKey}/${deviceName}/thing/sub/register")
    public void thingSubRegister(String topic, byte[] payload) {
        // 1.3.8 开始支持,@MqttClientSubscribe 注解支持 ${} 变量替换,会默认替换成 +
        // 注意:mica-mqtt 会先从 Spring boot 配置中替换参数 ${},如果存在配置会优先被替换。
        logger.info("topic:{} payload:{}", topic, new String(payload, StandardCharsets.UTF_8));
    }

}
/**
 * 客户端消息监听的另一种方式
 */
@MqttClientSubscribe("${topic1}")
public class MqttClientMessageListener implements IMqttClientMessageListener {
	private static final Logger logger = LoggerFactory.getLogger(MqttClientMessageListener.class);

	@Override
	public void onMessage(ChannelContext context, String topic, MqttPublishMessage message, byte[] payload) {
		logger.info("MqttClientMessageListener,topic:{} payload:{}", topic, new String(payload, StandardCharsets.UTF_8));
	}
}

2.6 共享订阅 topic 说明

mica-mqtt client 支持两种共享订阅方式:

  1. 共享订阅:订阅前缀 $queue/,多个客户端订阅了 $queue/topic,发布者发布到topic,则只有一个客户端会接收到消息。
  2. 分组订阅:订阅前缀 $share/<group>/,组客户端订阅了$share/group1/topic$share/group2/topic..,发布者发布到topic,则消息会发布到每个group中,但是每个group中只有一个客户端会接收到消息。

2.8 MqttClientTemplate 使用示例

@Component
public class ClientService {
    private static final Logger             logger = LoggerFactory.getLogger(ClientService.class);
    @Inject
    private              MqttClientTemplate client;

    public boolean publish(String body) {
        client.publish("/test/client", body.getBytes(StandardCharsets.UTF_8));
        return true;
    }

    public boolean sub() {
        client.subQos0("/test/#", (context, topic, message, payload) -> {
            logger.info(topic + '\t' + new String(payload, StandardCharsets.UTF_8));
        });
        return true;
    }

}