我正在尝试使用事件过滤器来减少应用程序使用的主题数量,使用新版Spring云流(Chelsea.RC1)中提供的新功能。正在使用正确的标头创建消息,但是,检查队列中消息的内容,消息不包含标头,只包含带有效负载的主体。
public void sendEnroll(EnrollCommand data) {
//MessageChannel
outputEnroll.send(MessageBuilder
.withPayload(data)
.setHeader("brand", "MASTERCARD")
.setHeader("operation", Operation.ENROLL).build());
}
消费
@Service
@EnableBinding(Channel.class)
public class EnrollConsumer {
@Autowired
private EnrollService service;
@StreamListener(target = Channel.INPUT_ENROLL, condition = "headers['brand']=='MASTERCARD'")
public void enrollConsumer(@Payload String command){
System.out.println(command);
//service.enrollment(command);
}
}
在消费者服务中,它会发出以下警告:
WARN -kafka-listener-1 o.s.c.s.b.DispatchingStreamListenerMessageHandler:62 - Cannot find a @StreamListener matching for message with id: 7baae934-7484-a7fd-91b0-ba906558bb13
答案 0 :(得分:3)