spring集成:消息不会从生产者端点传递到消费者端点
我编写了一个程序,其中生产者端点向“inputChannel”发送消息,消费者端点从inputChannel读取消息并向ackChannel发送回复 查找下面的代码片段spring集成:消息不会从生产者端点传递到消费者端点,spring,spring-integration,Spring,Spring Integration,我编写了一个程序,其中生产者端点向“inputChannel”发送消息,消费者端点从inputChannel读取消息并向ackChannel发送回复 查找下面的代码片段 @Component public class ProducerEndpoint { @ServiceActivator(outputChannel = "inputChannel") public Message<String> produceMessage(String me
@Component
public class ProducerEndpoint {
@ServiceActivator(outputChannel = "inputChannel")
public Message<String> produceMessage(String message) {
return MessageBuilder.withPayload("Message Received").build();
}
@ServiceActivator(inputChannel = "ackChannel")
public void receiveAcknowledgement(String message) {
System.out.println("From Consumer : " + message);
}
}
但是,当我将消息直接发送到inputChannel时,它由ConsumerMessage方法接收,并将reply发送到ReceiveAcknowledge方法
当我将ProducerEndpoint建模为MessagingGateway时,一切正常,如下所示
@Component
@MessagingGateway(name = "myGateway", defaultRequestChannel = "inputChannel")
public interface ProducerEndpoint {
@Gateway(requestChannel = "inputChannel", replyTimeout = 2, requestTimeout = 200)
public void produceMessage(String message);
}
当我直接调用该方法时,服务激活器不能将消息发送到outputchannel吗?您似乎误解了Spring集成的概念 直接调用
@ServiceActivator
方法与消息传递无关
您需要使用网关或其他消息传递机制向端点发送消息
可以使用@Publish
注释任意方法,以将方法调用的结果作为消息发布
producerEndpoint.produceMessage("Hello World");
@Component
@MessagingGateway(name = "myGateway", defaultRequestChannel = "inputChannel")
public interface ProducerEndpoint {
@Gateway(requestChannel = "inputChannel", replyTimeout = 2, requestTimeout = 200)
public void produceMessage(String message);
}