spring-integration-mqtt代码示例
时间: 2023-08-06 22:09:44 浏览: 55
好的,以下是一个简单的Spring Integration MQTT的代码示例:
```java
@Configuration
@EnableIntegration
public class MqttIntegrationConfig {
private final String MQTT_BROKER_URL = "tcp://localhost:1883";
private final String MQTT_CLIENT_ID = "mqttIntegration";
@Autowired
private MqttMessageHandler mqttMessageHandler;
@Bean
public MqttPahoClientFactory mqttClientFactory() {
DefaultMqttPahoClientFactory factory = new DefaultMqttPahoClientFactory();
factory.setServerURIs(MQTT_BROKER_URL);
factory.setUserName("username");
factory.setPassword("password");
return factory;
}
@Bean
public MessageChannel mqttInputChannel() {
return new DirectChannel();
}
@Bean
public MessageProducer inbound() {
MqttPahoMessageDrivenChannelAdapter adapter =
new MqttPahoMessageDrivenChannelAdapter(
MQTT_CLIENT_ID,
mqttClientFactory(),
"topic1", "topic2");
adapter.setCompletionTimeout(5000);
adapter.setConverter(new DefaultPahoMessageConverter());
adapter.setQos(1);
adapter.setOutputChannel(mqttInputChannel());
return adapter;
}
@Bean
public MessageHandler mqttOutbound() {
MqttPahoMessageHandler messageHandler =
new MqttPahoMessageHandler(
MQTT_CLIENT_ID + "_outbound",
mqttClientFactory());
messageHandler.setAsync(true);
messageHandler.setDefaultTopic("outputTopic");
return messageHandler;
}
@Bean
public IntegrationFlow mqttInFlow() {
return IntegrationFlows.from(mqttInputChannel())
.handle(mqttMessageHandler)
.get();
}
@Bean
public IntegrationFlow mqttOutFlow() {
return IntegrationFlows.from("mqttOutboundChannel")
.handle(mqttOutbound())
.get();
}
}
```
其中,`MqttPahoClientFactory`用于创建MQTT客户端,`MqttPahoMessageDrivenChannelAdapter`用于接收MQTT消息并将其发送到`mqttInputChannel()`通道,`MqttPahoMessageHandler`用于将消息发送到MQTT服务器。在这个例子中,我们定义了一个`MqttMessageHandler`,它将处理从MQTT服务器接收到的消息。`IntegrationFlow`用于将通道和处理程序连接起来。
需要注意的是,这个示例中的MQTT Broker URL和Client ID是虚拟的,需要根据实际情况进行更改。同时,需要添加相应的依赖,如下:
```xml
<dependency>
<groupId>org.springframework.integration</groupId>
<artifactId>spring-integration-mqtt</artifactId>
<version>5.4.3</version>
</dependency>
```