I want to use MQTT in my project, but when I followed the instructions on https://docs.spring.io/spring-integration/reference/html/mqtt.html#mqtt-shared-client, I encountered this error. Can someone help me, please?
@Bean
public ClientManager<IMqttAsyncClient, MqttConnectionOptions> clientManager() {
MqttConnectionOptions connectionOptions = new MqttConnectionOptions();
connectionOptions.setServerURIs(new String[]{"tcp://localhost:1883"});
connectionOptions.setConnectionTimeout(30000);
connectionOptions.setMaxReconnectDelay(1000);
connectionOptions.setAutomaticReconnect(true);
connectionOptions.setCleanStart(true);
Mqttv5ClientManager clientManager = new Mqttv5ClientManager(connectionOptions, "client-manager-client-id-v5");
clientManager.setPersistence(new MqttDefaultFilePersistence());
return clientManager;
}
@Bean
public IntegrationFlow mqttInFlowTopic1(ClientManager<IMqttAsyncClient, MqttConnectionOptions> clientManager) {
Mqttv5PahoMessageDrivenChannelAdapter messageProducer = new Mqttv5PahoMessageDrivenChannelAdapter(clientManager, "topic1");
return IntegrationFlow.from(messageProducer)
.channel(c -> c.executor(Executors.newCachedThreadPool()))
.handle(message -> {
MessageHeaders messageHeaders = message.getHeaders();
String rs = new String((byte[]) message.getPayload());
log.info("{}", messageHeaders);
log.info("{}", rs);
})
.get();
}
Unable to register MBean [bean 'mqttInFlowTopic1.mqtt:inbound-channel-adapter#0'; defined in: 'class path resource [com/uncloud/demoemqx/MqttConfig.class]'; from source: 'bean method mqttInFlowTopic1'] with key 'mqttInFlowTopic1.mqtt:inbound-channel-adapter#0'
at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:625) ~[spring-context-6.0.9.jar:6.0.9]
at org.springframework.jmx.export.MBeanExporter.lambda$registerBeans$2(MBeanExporter.java:552) ~[spring-context-6.0.9.jar:6.0.9]
at java.base/java.util.HashMap.forEach(HashMap.java:1421) ~[na:na]
at org.springframework.jmx.export.MBeanExporter.registerBeans(MBeanExporter.java:552) ~[spring-context-6.0.9.jar:6.0.9]
at org.springframework.jmx.export.MBeanExporter.afterSingletonsInstantiated(MBeanExporter.java:435) ~[spring-context-6.0.9.jar:6.0.9]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:984) ~[spring-beans-6.0.9.jar:6.0.9]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:941) ~[spring-context-6.0.9.jar:6.0.9]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:608) ~[spring-context-6.0.9.jar:6.0.9]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) ~[spring-boot-3.1.0.jar:3.1.0]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:733) ~[spring-boot-3.1.0.jar:3.1.0]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:435) ~[spring-boot-3.1.0.jar:3.1.0]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:311) ~[spring-boot-3.1.0.jar:3.1.0]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1305) ~[spring-boot-3.1.0.jar:3.1.0]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1294) ~[spring-boot-3.1.0.jar:3.1.0]
at com.uncloud.demoemqx.DemoEmqxApplication.main(DemoEmqxApplication.java:10) ~[main/:na]
Caused by: javax.management.MalformedObjectNameException: Invalid character `:' in value
at java.management/javax.management.ObjectName.parseValue(ObjectName.java:979) ~[na:na]
at java.management/javax.management.ObjectName.checkValue(ObjectName.java:1011) ~[na:na]
at java.management/javax.management.ObjectName.construct(ObjectName.java:730) ~[na:na]
at java.management/javax.management.ObjectName.<init>(ObjectName.java:1451) ~[na:na]
at java.management/javax.management.ObjectName.getInstance(ObjectName.java:1357) ~[na:na]
at org.springframework.jmx.support.ObjectNameManager.getInstance(ObjectNameManager.java:99) ~[spring-context-6.0.9.jar:6.0.9]
at org.springframework.jmx.export.naming.MetadataNamingStrategy.getObjectName(MetadataNamingStrategy.java:136) ~[spring-context-6.0.9.jar:6.0.9]
at org.springframework.boot.autoconfigure.jmx.ParentAwareNamingStrategy.getObjectName(ParentAwareNamingStrategy.java:66) ~[spring-boot-autoconfigure-3.1.0.jar:3.1.0]
at org.springframework.jmx.export.MBeanExporter.getObjectName(MBeanExporter.java:755) ~[spring-context-6.0.9.jar:6.0.9]
at org.springframework.jmx.export.MBeanExporter.registerBeanInstance(MBeanExporter.java:654) ~[spring-context-6.0.9.jar:6.0.9]
at org.springframework.jmx.export.MBeanExporter.registerBeanNameOrInstance(MBeanExporter.java:615) ~[spring-context-6.0.9.jar:6.0.9]
... 14 common frames omitted
Disconnected from the target VM, address: '127.0.0.1:38139', transport: 'socket'
Process finished with exit code 1
I encountered an error while using MQTT in my project
