mica-mqtt-server-spring-boot-starter 使用文档

<dependency>
    <groupId>net.dreamlu</groupId>
    <artifactId>mica-mqtt-server-spring-boot-starter</artifactId>
    <version>${最新版本}</version>
</dependency>

mqtt:
  server:
    enabled: true               # 是否开启服务端，默认：true
#    ip: 0.0.0.0                # 服务端 ip 默认为空，0.0.0.0，建议不要设置
    port: 1883                  # 端口，默认：1883
    name: Mica-Mqtt-Server      # 名称，默认：Mica-Mqtt-Server
    buffer-allocator: HEAP      # 堆内存和堆外内存，默认：堆内存
    heartbeat-timeout: 120000   # 心跳超时，单位毫秒，默认: 1000 * 120
    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
    auth:
      enable: false             # 是否开启 mqtt 认证
      username: mica            # mqtt 认证用户名
      password: mica            # mqtt 认证密码
    debug: true                 # 如果开启 prometheus 指标收集建议关闭
    stat-enable: true           # 开启指标收集，debug 和 prometheus 开启时需要打开，默认开启，关闭节省内存
    web-port: 8083              # http、websocket 端口，默认：8083
    websocket-enable: true      # 是否开启 websocket，默认： true
    http-enable: false          # 是否开启 http api，默认： false
    http-basic-auth:
      enable: false             # 是否开启 http basic auth，默认： false
      username: mica            # http basic auth 用户名
      password: mica            # http basic auth 密码
    ssl:                        # mqtt tcp ssl 认证
      enabled: false            # 是否开启 ssl 认证，2.1.0 开始支持双向认证
      keystore-path:            # 必须参数：ssl keystore 目录，支持 classpath:/ 路径。
      keystore-pass:            # 必选参数：ssl 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
      client-auth: none         # 是否需要客户端认证（双向认证），默认：NONE（不需要）

@Service
public class MqttServerMessageListener implements IMqttMessageListener {
    private static final Logger logger = LoggerFactory.getLogger(MqttServerMessageListener.class);

    @Override
    public void onMessage(ChannelContext context, String clientId, Message message) {
        logger.info("clientId:{} message:{} payload:{}", clientId, message, new String(message.getPayload(), StandardCharsets.UTF_8));
    }
}

@Configuration(proxyBeanMethods = false)
public class MqttServerCustomizerConfiguration {

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

}

import net.dreamlu.iot.mqtt.spring.server.MqttServerTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.nio.ByteBuffer;

/**
 * @author wsq
 */
@Service
public class ServerService {
    @Autowired
    private MqttServerTemplate server;

    public boolean publish(String body) {
        server.publishAll("/test/123", body.getBytes(StandardCharsets.UTF_8));
        return true;
    }
}

@Service
public class MqttConnectStatusListener {
	private static final Logger logger = LoggerFactory.getLogger(MqttConnectStatusListener.class);

	@EventListener
	public void online(MqttClientOnlineEvent event) {
		logger.info("MqttClientOnlineEvent:{}", event);
	}

	@EventListener
	public void offline(MqttClientOfflineEvent event) {
		logger.info("MqttClientOfflineEvent:{}", event);
	}

}

<!-- 开启 prometheus 指标收集 -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
    <groupId>io.micrometer</groupId>
    <artifactId>micrometer-registry-prometheus</artifactId>
</dependency>