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[英]Bind RabbitMQ consumer using Spring Cloud Stream to an existing queue
[英]Bind RabbitMQ consumer using Spring Cloud Stream to RabbitMQ producer
我有两种微服务,一种用于从内部FTP服务器收集XML文件,将其转换为DTO对象,然后将它们作为字节发布到RabbitMQ中,另一种用于反序列化从RabbitMQ到DTO对象的传入字节,将它们映射到JPA实体并持久化。到数据库。
我想在这两个微服务之间配置RabbitMQ代理,如下所示:
1)对于收集XML文件的微服务,我在application.properties中进行了如下编辑:
spring.cloud.stream.bindings.output.destination=TOPIC
spring.cloud.stream.bindings.output.group=proactive-policy
2)对于持久保留传入DTO触发的微服务,我在application.properties中配置如下:
spring.cloud.stream.bindings.input.destination=TOPIC
spring.cloud.stream.bindings.input.group=proactive-policy
为了从RabbitMQ接收传入的字节,我正在使用第二个微服务作为接收器:
@EnableJpaAuditing
@EnableBinding(Sink.class)
@SpringBootApplication(scanBasePackages = { "org.proactive.policy.data.cache" })
@RefreshScope
public class ProactivePolicyDataCacheApplication {
private static Logger logger = LoggerFactory.getLogger(ProactivePolicyDataCacheApplication.class);
@Autowired
PolicyService policyService;
public static void main(String[] args) {
SpringApplication.run(ProactivePolicyDataCacheApplication.class, args);
}
@StreamListener(Sink.INPUT)
public void input(Message<byte[]> message) throws Exception {
if (Objects.isNull(message) || Objects.isNull(message.getPayload())) {
logger.error("the message is null ");
throw new IllegalArgumentException("`message` and `message.payload` cannot be null");
}
byte[] data = message.getPayload();
if (data.length == 0) {
logger.warn("Received empty message");
return;
}
logger.info("Got data from policy-collector = " + new String(data, "UTF-8"));
PolicyListDto policyListDto = (PolicyListDto) SerializationUtils.deserialize(data);
logger.info("Policies.xml from policy-collector = " + policyListDto.getPolicy().toString());
policyService.save(policyListDto);
}
}
但是,当我打开RabbitMQ控制台查看交易时,队列TOPIC.proactive-policy中什么都没收到,但是传入的消息是在我没有配置的另一个队列FTPSTREAM.proactive-policy-collector中收到的
是否有解决此问题的建议
要点:1.输出绑定没有“组”之类的东西。 消费群体是一种消费财产。 这是javadocs的片段。
/**
* Unique name that the binding belongs to (applies to consumers only). Multiple
* consumers within the same group share the subscription. A null or empty String
* value indicates an anonymous group that is not shared.
* @see org.springframework.cloud.stream.binder.Binder#bindConsumer(java.lang.String,
* java.lang.String, java.lang.Object,
* org.springframework.cloud.stream.binder.ConsumerProperties)
*/
private String group;
2.名称“ FTPSTREAM.proactive-policy-collector”绝对不是spring-cloud-stream生成的,因此请考虑查看您的配置并查看错过的内容。
它告诉我,您有一些使用其“目标”的用户名为FTPSTREAM,并使用其“组”的proactive-policy-collector 。 它还告诉我,您的生产者将消息发送到FTPSTREAM交换机。
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