Spring IntegrationFlow http請求到amqp隊列

我想使用Spring Integration dsl將以下Spring集成項目轉換爲java config版本。我沒有太多的運氣，並且我無法找到有關dsl的文檔，這有助於我理解框架，足以實現這一點。Spring IntegrationFlow http請求到amqp隊列

這是我正在轉換的項目。它使用xml配置。 https://github.com/dsyer/http-amqp-tunnel

基本上它需要一個http請求，然後通過rabbitmq將它隧道傳送到另一端的目標應用程序。上面的鏈接可以找到項目應該做什麼的一個很好的描述。

我的應用程序和上面列出的github上的應用程序之間的主要區別在於，我的基於spring引導1.5.1.RELEASE和原始1.1.4.BUILD-SNAPSHOT。此外，原始項目使用Spring集成xml名稱空間支持，即int-http：inbound-gateway，int-http：outbound-gateway，int-amqp：outbound-gateway和int-amqp：入站網關，而我正在使用IntegrationFlow dsl在java配置中。

我的代碼甚至從來沒有在RabbitMQ上發佈消息，我在瀏覽器中發現超時異常，所以我認爲我的IntegrationFlow安裝不正確。我添加了一個連線水龍頭，記錄請求，並且當我從瀏覽器中打開應用程序時，我只能看到一次連線的輸出。

只是在正確的方向微調將不勝感激。

更新了配置和錯誤

package org.springframework.platform.proxy; 

import org.springframework.amqp.core.*; 
import org.springframework.amqp.rabbit.connection.ConnectionFactory; 
import org.springframework.amqp.rabbit.core.RabbitTemplate; 
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter; 
import org.springframework.beans.factory.annotation.*; 
import org.springframework.boot.SpringApplication; 
import org.springframework.boot.autoconfigure.EnableAutoConfiguration; 
import org.springframework.context.annotation.*; 
import org.springframework.integration.config.EnableIntegration; 
import org.springframework.integration.dsl.*; 
import org.springframework.integration.dsl.amqp.Amqp; 
import org.springframework.integration.dsl.http.Http; 
import org.springframework.integration.handler.LoggingHandler; 
import org.springframework.messaging.MessageHandler; 
import org.springframework.web.client.RestTemplate; 

@Configuration 
@ComponentScan 
@EnableAutoConfiguration 
@EnableIntegration 
public class TunnelApplication 
{ 
    public static void main(String[] args) 
    { 
     SpringApplication.run(TunnelApplication.class, args); 
    } 

    @Value("${urlExpression}") 
    private String urlExpression; 

    @Value("${targetUrl}") 
    private String targetUrl; 

    @Value("${outboundQueue}") 
    private String outboundQueue; 

    @Value("${inboundQueue}") 
    private String inboundQueue; 

    @Autowired 
    private ConnectionFactory rabbitConnectionFactory; 

    @Bean 
    public Queue requestQueue() 
    { 
     return new Queue(outboundQueue, true, false, true); 
    } 

    @Bean 
    public Queue targetQueue() 
    { 
     return new Queue(inboundQueue, true, false, true); 
    } 

    @Bean 
    public RestTemplate safeRestTemplate() 
    { 
     return new RestTemplate(); 
    } 

    @Bean 
    public Jackson2JsonMessageConverter jsonMessageConverter() 
    { 
     return new Jackson2JsonMessageConverter(); 
    } 


    @Bean 
    public AmqpTemplate amqpTemplate() 
    { 
     RabbitTemplate result = new RabbitTemplate(rabbitConnectionFactory); 
     result.setMessageConverter(jsonMessageConverter()); 
     return result; 
    } 

    @Bean 
    public IntegrationFlow httpInboundGateway() 
    { 
     return IntegrationFlows 
       .from(Http.inboundGateway("/tunnel")) 
       .handle(
         Amqp.outboundAdapter(amqpTemplate()) 
          .mappedRequestHeaders("http_*") 
          .routingKey(outboundQueue) 
//       .routingKeyExpression("headers['routingKey']") 
         ) 
       .wireTap(f->f.handle(logger("outbound"))) 
       .get(); 
    } 

    @Bean 
    public IntegrationFlow amqpInboundGateway(ConnectionFactory connectionFactory) 
    { 
     return IntegrationFlows.from 
       (
        Amqp.inboundGateway(connectionFactory, inboundQueue) 
         .mappedRequestHeaders("http_*") 
         .messageConverter(jsonMessageConverter()) 
       ) 
       .handle(Http.outboundGateway(targetUrl)) 
       .wireTap(f->f.handle(logger("inbound"))) 
       .get(); 
    } 


    @Bean 
    public MessageHandler logger(String name) 
    { 
     LoggingHandler loggingHandler = new LoggingHandler(LoggingHandler.Level.INFO.name()); 
     loggingHandler.setLoggerName(name); 
     return loggingHandler; 
    } 
}

以下錯誤消息繼續得到印刷存在對RabbitMQ的停留在應用程序運行時的消息。它看起來像是把它拉下來，並得到一個錯誤，然後再把它放回去。這關係到我，因爲我想要將任何錯誤傳播回原始客戶端，而不是讓服務器停滯不前。

2017-02-06 16:00:12.167 INFO 10264 --- [nio-9000-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]  : Initializing Spring FrameworkServlet 'dispatcherServlet' 
2017-02-06 16:00:12.167 INFO 10264 --- [nio-9000-exec-1] o.s.web.servlet.DispatcherServlet  : FrameworkServlet 'dispatcherServlet': initialization started 
2017-02-06 16:00:12.190 INFO 10264 --- [nio-9000-exec-1] o.s.web.servlet.DispatcherServlet  : FrameworkServlet 'dispatcherServlet': initialization completed in 23 ms 
2017-02-06 16:00:16.806 INFO 10264 --- [erContainer#0-1] outbound         : <200 OK,{X-Application-Context=[application], Content-Type=[text/html;charset=UTF-8], Content-Length=[14], Date=[Mon, 06 Feb 2017 22:00:16 GMT]}> 
2017-02-06 16:00:16.810 WARN 10264 --- [erContainer#0-1] s.a.r.l.ConditionalRejectingErrorHandler : Execution of Rabbit message listener failed. 

org.springframework.amqp.rabbit.listener.exception.ListenerExecutionFailedException: Listener threw exception 
    at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.wrapToListenerExecutionFailedExceptionIfNeeded(AbstractMessageListenerContainer.java:872) ~[spring-rabbit-1.7.0.RELEASE.jar:na] 
    at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:782) ~[spring-rabbit-1.7.0.RELEASE.jar:na] 
    at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:702) ~[spring-rabbit-1.7.0.RELEASE.jar:na] 
    at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.access$001(SimpleMessageListenerContainer.java:95) [spring-rabbit-1.7.0.RELEASE.jar:na] 
    at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$1.invokeListener(SimpleMessageListenerContainer.java:186) ~[spring-rabbit-1.7.0.RELEASE.jar:na] 
    at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.invokeListener(SimpleMessageListenerContainer.java:1227) [spring-rabbit-1.7.0.RELEASE.jar:na] 
    at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.executeListener(AbstractMessageListenerContainer.java:683) ~[spring-rabbit-1.7.0.RELEASE.jar:na] 
    at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.doReceiveAndExecute(SimpleMessageListenerContainer.java:1181) [spring-rabbit-1.7.0.RELEASE.jar:na] 
    at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.receiveAndExecute(SimpleMessageListenerContainer.java:1165) [spring-rabbit-1.7.0.RELEASE.jar:na] 
    at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.access$1500(SimpleMessageListenerContainer.java:95) [spring-rabbit-1.7.0.RELEASE.jar:na] 
    at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run(SimpleMessageListenerContainer.java:1367) [spring-rabbit-1.7.0.RELEASE.jar:na] 
    at java.lang.Thread.run(Unknown Source) [na:1.8.0_66] 
Caused by: org.springframework.messaging.MessageDeliveryException: Dispatcher has no subscribers for channel 'application:test:9000.amqpInboundGateway.channel#1'.; nested exception is org.springframework.integration.MessageDispatchingException: Dispatcher has no subscribers, failedMessage=GenericMessage [payload=<200 OK,{X-Application-Context=[application], Content-Type=[text/html;charset=UTF-8], Content-Length=[14], Date=[Mon, 06 Feb 2017 22:00:16 GMT]}>, headers={http_requestMethod=GET, replyChannel=org.springframewor[email protected]2eb9b1c6, errorChannel=org.springframework.messaging.core.GenericMess[email protected], amqp_consumerQueue=request, http_requestUrl=http://localhost:9000/tunnel/, id=bcb94ed9-45fc-c333-afee-de6e20a9f1b5, Content-Length=14, amqp_consumerTag=amq.ctag-ncEDSKdgWNKQk-jhGfqsbw, contentType=text/html;charset=UTF-8, http_statusCode=200, Date=1486418416000, timestamp=1486418416805}] 
    at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:93) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:423) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:373) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:115) ~[spring-messaging-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:45) ~[spring-messaging-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:105) ~[spring-messaging-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutput(AbstractMessageProducingHandler.java:292) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.integration.handler.AbstractMessageProducingHandler.produceOutput(AbstractMessageProducingHandler.java:212) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.integration.handler.AbstractMessageProducingHandler.sendOutputs(AbstractMessageProducingHandler.java:129) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:115) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:127) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.integration.dispatcher.AbstractDispatcher.tryOptimizedDispatch(AbstractDispatcher.java:116) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.integration.dispatcher.UnicastingDispatcher.doDispatch(UnicastingDispatcher.java:148) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.integration.dispatcher.UnicastingDispatcher.dispatch(UnicastingDispatcher.java:121) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:89) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:423) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:115) ~[spring-messaging-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.messaging.core.GenericMessagingTemplate.doSendAndReceive(GenericMessagingTemplate.java:150) ~[spring-messaging-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.messaging.core.GenericMessagingTemplate.doSendAndReceive(GenericMessagingTemplate.java:45) ~[spring-messaging-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.messaging.core.AbstractMessagingTemplate.sendAndReceive(AbstractMessagingTemplate.java:42) ~[spring-messaging-4.3.6.RELEASE.jar:4.3.6.RELEASE] 
    at org.springframework.integration.core.MessagingTemplate.sendAndReceive(MessagingTemplate.java:97) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.integration.gateway.MessagingGatewaySupport.doSendAndReceive(MessagingGatewaySupport.java:441) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.integration.gateway.MessagingGatewaySupport.sendAndReceiveMessage(MessagingGatewaySupport.java:409) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.integration.amqp.inbound.AmqpInboundGateway.access$400(AmqpInboundGateway.java:52) ~[spring-integration-amqp-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.integration.amqp.inbound.AmqpInboundGateway$1.onMessage(AmqpInboundGateway.java:154) ~[spring-integration-amqp-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:779) ~[spring-rabbit-1.7.0.RELEASE.jar:na] 
    ... 10 common frames omitted 
Caused by: org.springframework.integration.MessageDispatchingException: Dispatcher has no subscribers 
    at org.springframework.integration.dispatcher.UnicastingDispatcher.doDispatch(UnicastingDispatcher.java:154) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.integration.dispatcher.UnicastingDispatcher.dispatch(UnicastingDispatcher.java:121) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:89) ~[spring-integration-core-4.3.7.RELEASE.jar:4.3.7.RELEASE] 
    ... 35 common frames omitted

根據Gary的評論 修改擊中彈簧引導驅動器的/豆端點配置。

@Bean 
public IntegrationFlow webToRabbit(RabbitTemplate amqpTemplate) { 
    return IntegrationFlows.from(Http.inboundGateway("/tunnel")) 
      .log() 
      .handle(Amqp.outboundGateway(amqpTemplate).routingKey(queue().getName())) 
      .log() 
      .bridge(null) 
      .get(); 
} 

@Bean 
public Queue queue() { 
    return new AnonymousQueue(); 
} 

@Bean 
public IntegrationFlow rabbitToWeb(ConnectionFactory connectionFactory) { 
    return IntegrationFlows.from(Amqp.inboundGateway(connectionFactory, queue())) 
      .log() 
      .handle(Http.outboundGateway("http://localhost:8080/beans") 
        .expectedResponseType(String.class)) 
      .log() 
      .bridge(null) 
      .get(); 
} 

@Bean 
public IntegrationFlow finalWeb() { 
    return IntegrationFlows.from(Http.inboundGateway("/beans")) 
      .log() 
      .<String, String>transform(String::toUpperCase) 
      .log() 
      .bridge(null) 
      .get(); 
}

來源

2017-02-06 Josh Chappelle

@SpringBootApplication 
public class So42077149Application { 

    public static void main(String[] args) { 
     SpringApplication.run(So42077149Application.class, args); 
    } 

    @Bean 
    public IntegrationFlow webToRabbit(RabbitTemplate amqpTemplate) { 
     return IntegrationFlows.from(Http.inboundGateway("/foo")) 
       .log() 
       .handle(Amqp.outboundGateway(amqpTemplate).routingKey(queue().getName())) 
       .log() 
       .bridge(null) 
       .get(); 
    } 

    @Bean 
    public Queue queue() { 
     return new AnonymousQueue(); 
    } 

    @Bean 
    public IntegrationFlow rabbitToWeb(ConnectionFactory connectionFactory) { 
     return IntegrationFlows.from(Amqp.inboundGateway(connectionFactory, queue())) 
       .log() 
       .handle(Http.outboundGateway("http://localhost:8080/bar") 
         .expectedResponseType(String.class)) 
       .log() 
       .bridge(null) 
       .get(); 
    } 

    @Bean 
    public IntegrationFlow finalWeb() { 
     return IntegrationFlows.from(Http.inboundGateway("/bar")) 
       .log() 
       .<String, String>transform(String::toUpperCase) 
       .log() 
       .bridge(null) 
       .get(); 
    } 


}

結果：

$ curl -H "Content-Type: text/plain" -d foo localhost:8080/foo 
FOO

編輯

而且隨着JSON ...

otApplication 公共類So42077149Application {

public static void main(String[] args) { 
     SpringApplication.run(So42077149Application.class, args); 
    } 

    @Bean 
    public IntegrationFlow webToRabbit(RabbitTemplate amqpTemplate) { 
     return IntegrationFlows.from(Http.inboundGateway("/foo")) 
       .log() 
       .handle(Amqp.outboundGateway(amqpTemplate) 
         .routingKey(queue().getName()) 
         .mappedRequestHeaders("*") 
         .mappedReplyHeaders("*")) 
       .log() 
       .bridge(null) 
       .get(); 
    } 

    @Bean 
    public Queue queue() { 
     return new AnonymousQueue(); 
    } 

    @Bean 
    public IntegrationFlow rabbitToWeb(ConnectionFactory connectionFactory) { 
     return IntegrationFlows.from(Amqp.inboundGateway(connectionFactory, queue())) 
       .log() 
       .handle(Http.outboundGateway("http://localhost:8080/bar") 
         .mappedRequestHeaders("*") 
         .mappedResponseHeaders("*") 
         .httpMethod(HttpMethod.GET) 
         .expectedResponseType(Map.class)) 
       .log() 
       .log(Level.INFO, "payloadClass", "payload.getClass()") 
       .bridge(null) 
       .get(); 
    } 

    @Bean 
    public IntegrationFlow finalWeb() { 
     return IntegrationFlows.from(Http.inboundGateway("/bar")) 
       .log() 
       .transform("{ \"foo\" : \"bar\" }") 
       .enrichHeaders(h -> h.header("contentType", "application/json")) 
       .log() 
       .bridge(null) 
       .get(); 
    } 

}

來源

2017-02-06 21:37:47

Gary我嘗試了你的配置，並且出現錯誤。它看起來像我可能需要一個轉換器將消息轉換爲RestTemplate的json消息。任何指導什麼組件插入？ org.springframework.web.client.RestClientException：無法寫請求：找不到適合請求類型[org.springframework.util.LinkedMultiValueMap]和內容類型[application/x-java-serialized-object]的HttpMessageConverter。 –

另一方面，它不是來自瀏覽器的休息請求，因爲我實際上只是通過瀏覽器進行GET操作。 –

我根據你的評論以及我的更新配置。真的只是修改了網址來擊中執行器端點。 –

對於要求/回覆的互動，你必須使用Amqp.outboundGateway。這就是戴夫有其樣品中：

<int-amqp:outbound-gateway request-channel="outbound" 
     routing-key="${outboundQueue}" mapped-request-headers="http_*" />

另外，你看，你在這裏有一個routingKey錯過了，而根據Dave的邏輯必須outboundQueue。

的Http.inboundGateway和Amqp.outboundGateway可以組合成一個IntegrationFlow：

@Bean 
public IntegrationFlow clientGateway() { 
    return IntegrationFlows 
      .from(Http.inboundGateway("/tunnel")) 
      .handle(Amqp.outboundGateway(amqpTemplate) 
         .mappedRequestHeaders("http_*") 
         .routingKey(outboundQueue)) 
      .get(); 
}

服務器部分也可被組合成單個IntegrationFlow。它的組件看起來不錯。

您真的希望得到您的休息服務的回覆，所以您的所有下游組件都必須是請求/回覆。

讓我們再看看設計一次！

------------- HTTP ------------- AMQP ------------- AMQP ------------- HTTP -------------- 
| local app | <------> | client | <------> | broker | <------> | server | <------> | target app | 
-------------   -------------   -------------   -------------   --------------

來源

2017-02-06 21:26:50

請參閱我的答案了。 –

感謝您的信息。我想我得到了更多。我更新了我的原始問題，以根據您的建議包含我的新配置。我現在得到一個在日誌中重複出現的錯誤。 –

我仍然看到'Amqp.outboundAdapter'，但不是'Amqp.outboundGateway'，因爲我建議你。此外，對於那些沒有隱式通道的wireTap，你必須使用'.bridge（null）'，正如Gary所建議的那樣。雖然你應該記住'wireTap'應用於你指出的地方的頻道，而不是整個流程。 –

Spring IntegrationFlow http請求到amqp隊列

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