我正在尝试使用带有各种绑定器的spring-cloud-stream 1.0.0.M4。我不是在生产者和消费者之间共享我的数据传输对象(谁这样做?)所以我遇到了为绑定包含内容类型配置的需要。
producer config:
spring:
cloud:
stream:
bindings:
customer-save: "customer-save"
customer-save.content-type: application/json
生产者代码:
public interface CustomerChannels {
@Output("customer-save")
MessageChannel save();
}
@Service
public class CustomerServiceImpl implements CustomerService {
@Autowired
private CustomerChannels customerChannels;
...
@Override
public void insertCustomer(Customer customer) {
customerChannels.save().send(MessageBuilder.withPayload(customer).build());
}
消费者配置:
spring:
cloud:
stream:
bindings:
customer-save: "customer-save"
customer-save.content-type: application/x-java-object;type=com.build.customer.domain.Customer
消费者代码:
public interface CustomerChannels {
String CUSTOMER_SAVE = "customer-save";
@Input(CUSTOMER_SAVE)
SubscribableChannel save();
}
@MessageEndpoint
public class CustomerProcessor {
@Autowired
private CustomerDao customerDao;
@ServiceActivator(inputChannel = CustomerChannels.CUSTOMER_SAVE)
public void saveCustomer(Customer customer) {
if (customer.getId() == null) {
customerDao.insertCustomer(customer);
} else {
customerDao.updateCustomer(customer);
}
}
}
我用兔子,redis和kafka粘合剂尝试了这个,发现json hack只适用于兔子。我使用kafka和redis在消费者中得到以下错误。
kafka消费者错误:
2016-03-05 21:54:43.337 ERROR 18846 --- [pool-8-thread-1] o.s.i.k.listener.LoggingErrorHandler : Error while processing: KafkaMessage [Message(magic = 0, attributes = 0, crc = 2188302100, key = null, payload = java.nio.HeapByteBuffer[pos=0 lim=248 cap=248]), KafkaMessageMetadata [offset=4, nextOffset=5, Partition[topic='customer-save', id=0]]
org.springframework.messaging.MessageDeliveryException: failed to send Message to channel 'customer-save'; nested exception is java.lang.IllegalArgumentException: Unknown type for contentType header value: class java.util.LinkedHashMap
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:468) ~[spring-integration-core-4.2.5.RELEASE.jar:na]
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:392) ~[spring-integration-core-4.2.5.RELEASE.jar:na]
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:115) ~[spring-messaging-4.2.5.RELEASE.jar:4.2.5.RELEASE]
redis消费者错误:
2016-03-05 21:51:04.727 ERROR 18122 --- [hannel-adapter1] o.s.c.s.b.r.RedisMessageChannelBinder$1 : Failed to deliver message; retries exhausted; message sent to queue 'ERRORS:customer-save.anonymous.08e94dac-49fe-464e-b800-28a3844dbaf6'
org.springframework.messaging.MessageDeliveryException: failed to send Message to channel 'customer-save'; nested exception is java.lang.IllegalArgumentException: Unknown type for contentType header value: class java.util.LinkedHashMap
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:468) [spring-integration-core-4.2.5.RELEASE.jar:na]
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:392) [spring-integration-core-4.2.5.RELEASE.jar:na]
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:115) [spring-messaging-4.2.5.RELEASE.jar:4.2.5.RELEASE]
答案 0 :(得分:0)