Java MessageChannel.send方法代码示例

import org.springframework.messaging.MessageChannel; //导入方法依赖的package包/类
@Override
protected final void doSend(MessageChannel channel, Message<?> message) {
	Assert.notNull(channel, "'channel' is required");

	MessageHeaderAccessor accessor = MessageHeaderAccessor.getAccessor(message, MessageHeaderAccessor.class);
	if (accessor != null && accessor.isMutable()) {
		accessor.setImmutable();
	}

	long timeout = this.sendTimeout;
	boolean sent = (timeout >= 0 ? channel.send(message, timeout) : channel.send(message));

	if (!sent) {
		throw new MessageDeliveryException(message,
				"failed to send message to channel '" + channel + "' within timeout: " + timeout);
	}
}
 

import org.springframework.messaging.MessageChannel; //导入方法依赖的package包/类
@Override
@SuppressWarnings("deprecation")
public void afterSessionEnded(WebSocketSession session, CloseStatus closeStatus, MessageChannel outputChannel) {
	this.decoders.remove(session.getId());

	Principal principal = session.getPrincipal();
	if (principal != null && this.userSessionRegistry != null) {
		String userName = getSessionRegistryUserName(principal);
		this.userSessionRegistry.unregisterSessionId(userName, session.getId());
	}

	Message<byte[]> message = createDisconnectMessage(session);
	SimpAttributes simpAttributes = SimpAttributes.fromMessage(message);
	try {
		SimpAttributesContextHolder.setAttributes(simpAttributes);
		if (this.eventPublisher != null) {
			Principal user = session.getPrincipal();
			publishEvent(new SessionDisconnectEvent(this, message, session.getId(), closeStatus, user));
		}
		outputChannel.send(message);
	}
	finally {
		SimpAttributesContextHolder.resetAttributes();
		simpAttributes.sessionCompleted();
	}
}
 

import org.springframework.messaging.MessageChannel; //导入方法依赖的package包/类
@RequestMapping(value = "/logs", method = RequestMethod.POST)
@ResponseBody
public String logs(@RequestBody String body) throws IOException {

  // "application/logplex-1" does not conform to RFC5424.
  // It leaves out STRUCTURED-DATA but does not replace it with
  // a NILVALUE. To workaround this, we inject empty STRUCTURED-DATA.
  String[] parts = body.split("router - ");
  String log = parts[0] + "router - [] " + (parts.length > 1 ? parts[1] : "");

  RFC6587SyslogDeserializer parser = new RFC6587SyslogDeserializer();
  InputStream is = new ByteArrayInputStream(log.getBytes());
  Map<String, ?> messages = parser.deserialize(is);
  ObjectMapper mapper = new ObjectMapper();

  MessageChannel toKafka = context.getBean("toKafka", MessageChannel.class);
  String json = mapper.writeValueAsString(messages);
  toKafka.send(new GenericMessage<>(json));

  return "ok";
}
 

import org.springframework.messaging.MessageChannel; //导入方法依赖的package包/类
@Test
public void testIntegration() throws Exception {
  MessageChannel producingChannel =
      applicationContext.getBean("producingChannel", MessageChannel.class);

  Map<String, Object> headers =
      Collections.singletonMap(KafkaHeaders.TOPIC, SPRING_INTEGRATION_KAFKA_TOPIC);

  LOGGER.info("sending 10 messages");
  for (int i = 0; i < 10; i++) {
    GenericMessage<String> message =
        new GenericMessage<>("Hello Spring Integration Kafka " + i + "!", headers);
    producingChannel.send(message);
    LOGGER.info("sent message='{}'", message);
  }

  countDownLatchHandler.getLatch().await(10000, TimeUnit.MILLISECONDS);
  assertThat(countDownLatchHandler.getLatch().getCount()).isEqualTo(0);
}
 

import org.springframework.messaging.MessageChannel; //导入方法依赖的package包/类
private void append(String name, Message<?> message) {
	String key = (String) message.getHeaders().get(ROUTE_KEY);
	if (message.getHeaders().getReplyChannel() instanceof MessageChannel) {
		MessageChannel replyChannel = (MessageChannel) message.getHeaders()
				.getReplyChannel();
		replyChannel.send(message);
		return;
	}
	Route route = new Route(key, name);
	String path = route.getPath();
	if (!queues.containsKey(path)) {
		Bridge<Message<?>> flux = new Bridge<>();
		queues.putIfAbsent(path, flux);
	}
	queues.get(path).send(message);
	if (emitters.containsKey(path)) {
		Set<SseEmitter> list = new HashSet<>(emitters.get(path));
		for (SseEmitter emitter : list) {
			try {
				emitter.send(message.getPayload());
			}
			catch (IOException e) {
				emitters.get(path).remove(emitter);
			}
		}
	}
}
 

import org.springframework.messaging.MessageChannel; //导入方法依赖的package包/类
public boolean send(Message<?> message) throws Exception {
    boolean result = false;

    ExchangePattern pattern;
    if (isExpectReply()) {
        pattern = ExchangePattern.InOut;
    } else {
        pattern = ExchangePattern.InOnly;
    }

    Exchange inExchange = new DefaultExchange(getCamelContext(), pattern);
    SpringIntegrationBinding.storeToCamelMessage(message, inExchange.getIn());
    Exchange outExchange = getCamelTemplate().send(getCamelEndpointUri(), inExchange);
    org.apache.camel.Message camelMsg = outExchange.hasOut() ? outExchange.getOut() : outExchange.getIn();
    if (camelMsg.isFault()) {
        result = true;
    }

    Message<?> response;
    if (isExpectReply()) {
        //Check the message header for the return address
        response = SpringIntegrationBinding.storeToSpringIntegrationMessage(outExchange.getOut());
        if (replyChannel == null) {
            MessageChannel messageReplyChannel = (MessageChannel) message.getHeaders().get(MessageHeaders.REPLY_CHANNEL);
            if (messageReplyChannel != null) {
                result = messageReplyChannel.send(response);
            } else {
                throw new MessageDeliveryException(response, "Cannot resolve ReplyChannel from message: " + message);
            }
        } else {
            result = replyChannel.send(response);
        }
    }

    return result;
}
 

import org.springframework.messaging.MessageChannel; //导入方法依赖的package包/类
@Test
public void testSendingOneWayMessage() throws Exception {
    MockEndpoint resultEndpoint = getMockEndpoint("mock:result");
    resultEndpoint.expectedBodiesReceived(MESSAGE_BODY);

    MessageChannel outputChannel = getMandatoryBean(MessageChannel.class, "outputChannel");
    outputChannel.send(new GenericMessage<Object>(MESSAGE_BODY));

    assertMockEndpointsSatisfied();
}
 

import org.springframework.messaging.MessageChannel; //导入方法依赖的package包/类
@Test
public void testSendingOneWayMessage() throws Exception {
    MockEndpoint resultEndpoint = getMockEndpoint("mock:result");
    resultEndpoint.expectedBodiesReceived(MESSAGE_BODY);

    MessageChannel outputChannel = getMandatoryBean(MessageChannel.class, "channelA");
    outputChannel.send(new GenericMessage<Object>(MESSAGE_BODY));

    assertMockEndpointsSatisfied();
}
 

import org.springframework.messaging.MessageChannel; //导入方法依赖的package包/类
public static void main (String[] args){

        AbstractApplicationContext context = new ClassPathXmlApplicationContext("/HelloWorldDemo.xml",App.class);

        MessageChannel inputChannel = context.getBean("inputChannel", MessageChannel.class);

        PollableChannel outputChannel = context.getBean("outputChannel", PollableChannel.class);

        inputChannel.send(new GenericMessage<String>("World Mundo da Integração"));

        logger.info("==> HelloWorldDemo: " + outputChannel.receive(0).getPayload());

        context.close();
    }