我正在尝试使用Spring，Camel和ActiveMQ来模拟具有两个不同JMS代理的简单消息传递模式。这是我正在尝试使用的路线。
@Component("testRouteBuilder")
public class CamelRouteBuilder extends RouteBuilder {
@Autowired
@Qualifier("jmscf2")
private ConnectionFactory jmsServer2;
@Override
public void configure() throws Exception {
from("timer://foo?delay=2000")
.setBody(simple("hello"))
.log("request: ${body}")
.to("bean://jmsbean")
.log("reply: ${body}");
from("jms1://queue:dest")
.log("got message: ${body}")
.log("headers: ${headers}")
.setBody(constant("reply"))
.process(new Processor() {
@Override
public void process(Exchange arg0) throws Exception {
Connection connection = jmsServer2.createConnection();
connection.start();
Session session = connection.createSession(Session.AUTO_ACKNOWLEDGE);
TextMessage inMsg = arg0.getIn().getBody(TextMessage.class);
MessageProducer producer = session.createProducer(inMsg.getJMSReplyTo());
TextMessage outMsg = session.createTextMessage();
outMsg.setJMSCorrelationID(inMsg.getJMSCorrelationID());
outMsg.setText("reply");
producer.send(outMsg);
session.close();
connection.close();
}
});
}
@Component("jmsbean")
public static class JmsBean {
@Autowired
@Qualifier("jmscf1")
ConnectionFactory jmsServer1;
@Autowired
@Qualifier("jmscf2")
ConnectionFactory jmsServer2;
public String testJms(@Body String body) throws JMSException {
Connection conn = jmsServer1.createConnection();
conn.start();
Session session = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
Connection conn2 = jmsServer2.createConnection();
conn2.start();
Session session2 = conn2.createSession(false, Session.AUTO_ACKNOWLEDGE);
TemporaryQueue tempQueue = session2.createTemporaryQueue();
TextMessage message = session.createTextMessage();
message.setJMSCorrelationID("tuomas");
message.setJMSReplyTo(tempQueue);
message.setJMSMessageID("tuomas");
Queue dest = session.createQueue("dest");
MessageProducer producer = session.createProducer(dest);
producer.send(message);
session.close();
conn.close();
MessageConsumer consumer = session2.createConsumer(tempQueue, "tuomas");
Message reply = consumer.receive();
session2.close();
conn2.close();
return reply.getBody(String.class);
}
}
}
以下是bean组件
@Configuration
@Profile("local")
@ImportResource("classpath:META-INF/spring/app-ctx.xml")
public class BeanDeclarations {
@Autowired
private CamelContext ctx;
@Bean("jms1")
@Primary
@Qualifier("jms1Component")
public JmsComponent jms1Component() {
return JmsComponent.jmsComponentAutoAcknowledge(jms1());
}
@Bean("jms2")
@Qualifier("jms2Component")
public JmsComponent jms2Component() {
return JmsComponent.jmsComponentAutoAcknowledge(jms2());
}
@Bean("jmscf1")
@Primary
@Qualifier("jmscf1")
public ConnectionFactory jms1() {
return new ActiveMQConnectionFactory("vm://localhost:7777");
}
@Bean("jmscf2")
@Qualifier("jmscf2")
public ConnectionFactory jms2() {
return new ActiveMQConnectionFactory("vm://localhost:7778");
}
@Bean
public Object propertiesComponent() {
PropertiesComponent component = ctx.getComponent("properties", PropertiesComponent.class);
component.setLocation("classpath://application.properties");
return new Object();
}
}
尝试运行以下示例会产生以下错误
2018-04-07 15:34:55.554 INFO 7080 --- [ main] o.a.camel.spring.SpringCamelContext : Apache Camel 2.21.0 (CamelContext: camel-1) is starting
2018-04-07 15:34:55.554 INFO 7080 --- [ main] o.a.c.m.ManagedManagementStrategy : JMX is enabled
2018-04-07 15:34:55.704 INFO 7080 --- [ main] o.a.c.i.converter.DefaultTypeConverter : Type converters loaded (core: 193, classpath: 11)
2018-04-07 15:34:55.867 INFO 7080 --- [ main] o.a.camel.spring.SpringCamelContext : StreamCaching is not in use. If using streams then its recommended to enable stream caching. See more details at http://camel.apache.org/stream-caching.html
2018-04-07 15:34:55.929 INFO 7080 --- [ main] o.a.camel.spring.SpringCamelContext : Route: route1 started and consuming from: timer://foo?delay=2000
2018-04-07 15:34:56.054 INFO 7080 --- [ main] o.apache.activemq.broker.BrokerService : Using Persistence Adapter: KahaDBPersistenceAdapter[C:\Users\Tuomas\Desktop\springcamel\activemq-data\localhost\KahaDB]
2018-04-07 15:34:56.085 INFO 7080 --- [ JMX connector] o.a.a.broker.jmx.ManagementContext : JMX consoles can connect to service:jmx:rmi:///jndi/rmi://localhost:1099/jmxrmi
2018-04-07 15:34:56.132 INFO 7080 --- [ main] o.a.a.store.kahadb.MessageDatabase : KahaDB is version 6
2018-04-07 15:34:56.179 INFO 7080 --- [ main] o.a.a.store.kahadb.plist.PListStoreImpl : PListStore:[C:\Users\Tuomas\Desktop\springcamel\activemq-data\localhost\tmp_storage] started
2018-04-07 15:34:56.320 INFO 7080 --- [ main] o.apache.activemq.broker.BrokerService : Apache ActiveMQ 5.15.3 (localhost, ID:DESKTOP-LI5P50P-55150-1523104496195-0:1) is starting
2018-04-07 15:34:56.398 INFO 7080 --- [ main] o.apache.activemq.broker.BrokerService : Apache ActiveMQ 5.15.3 (localhost, ID:DESKTOP-LI5P50P-55150-1523104496195-0:1) started
2018-04-07 15:34:56.398 INFO 7080 --- [ main] o.apache.activemq.broker.BrokerService : For help or more information please see: http://activemq.apache.org
2018-04-07 15:34:56.398 INFO 7080 --- [ main] o.a.activemq.broker.TransportConnector : Connector vm://localhost started
2018-04-07 15:34:56.429 INFO 7080 --- [ main] o.a.camel.spring.SpringCamelContext : Route: route2 started and consuming from: jms1://queue:dest
2018-04-07 15:34:56.429 INFO 7080 --- [ main] o.a.camel.spring.SpringCamelContext : Total 2 routes, of which 2 are started
2018-04-07 15:34:56.429 INFO 7080 --- [ main] o.a.camel.spring.SpringCamelContext : Apache Camel 2.21.0 (CamelContext: camel-1) started in 0.875 seconds
2018-04-07 15:34:56.460 INFO 7080 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''
2018-04-07 15:34:56.460 INFO 7080 --- [ main] t.springcamel.SpringcamelApplication : Started SpringcamelApplication in 6.249 seconds (JVM running for 11.311)
2018-04-07 15:34:58.431 INFO 7080 --- [2 - timer://foo] route1 : request: hello
2018-04-07 15:34:58.476 INFO 7080 --- [sConsumer[dest]] route2 : got message:
2018-04-07 15:34:58.476 INFO 7080 --- [sConsumer[dest]] route2 : headers: {breadcrumbId=ID-DESKTOP-LI5P50P-1523104493101-0-2, JMSCorrelationID=tuomas, JMSCorrelationIDAsBytes=tuomas, JMSDeliveryMode=2, JMSDestination=queue://dest, JMSExpiration=0, JMSMessageID=ID:DESKTOP-LI5P50P-55150-1523104496195-4:2:1:1:1, JMSPriority=4, JMSRedelivered=false, JMSReplyTo=temp-queue://ID:DESKTOP-LI5P50P-55150-1523104496195-6:1:1, JMSTimestamp=1523104498460, JMSType=null, JMSXGroupID=null, JMSXUserID=null}
2018-04-07 15:34:58.491 ERROR 7080 --- [sConsumer[dest]] o.a.camel.processor.DefaultErrorHandler : Failed delivery for (MessageId: ID:DESKTOP-LI5P50P-55150-1523104496195-4:2:1:1:1 on ExchangeId: ID-DESKTOP-LI5P50P-1523104493101-0-2). Exhausted after delivery attempt: 1 caught: org.apache.camel.CamelExecutionException: Exception occurred during execution on the exchange: Exchange[ID-DESKTOP-LI5P50P-1523104493101-0-2]
Message History
---------------------------------------------------------------------------------------------------------------------------------------
RouteId ProcessorId Processor Elapsed (ms)
[route2 ] [route2 ] [jms1://queue:dest ] [ 15]
[route2 ] [log3 ] [log ] [ 0]
[route2 ] [log4 ] [log ] [ 0]
[route2 ] [setBody2 ] [setBody[constant{reply}] ] [ 0]
[route2 ] [process1 ] [Processor@0x6da9dde8 ] [ 15]
Stacktrace
---------------------------------------------------------------------------------------------------------------------------------------
org.apache.camel.CamelExecutionException: Exception occurred during execution on the exchange: Exchange[ID-DESKTOP-LI5P50P-1523104493101-0-2]
at org.apache.camel.util.ObjectHelper.wrapCamelExecutionException(ObjectHelper.java:1846) ~[camel-core-2.21.0.jar:2.21.0]
at org.apache.camel.impl.DefaultExchange.setException(DefaultExchange.java:385) ~[camel-core-2.21.0.jar:2.21.0]
at org.apache.camel.processor.DelegateSyncProcessor.process(DelegateSyncProcessor.java:66) ~[camel-core-2.21.0.jar:2.21.0]
at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:548) ~[camel-core-2.21.0.jar:2.21.0]
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:201) [camel-core-2.21.0.jar:2.21.0]
at org.apache.camel.processor.Pipeline.process(Pipeline.java:138) [camel-core-2.21.0.jar:2.21.0]
at org.apache.camel.processor.Pipeline.process(Pipeline.java:101) [camel-core-2.21.0.jar:2.21.0]
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:201) [camel-core-2.21.0.jar:2.21.0]
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:97) [camel-core-2.21.0.jar:2.21.0]
at org.apache.camel.component.jms.EndpointMessageListener.onMessage(EndpointMessageListener.java:113) [camel-jms-2.21.0.jar:2.21.0]
at org.springframework.jms.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:744) [spring-jms-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.jms.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:704) [spring-jms-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.jms.listener.AbstractMessageListenerContainer.doExecuteListener(AbstractMessageListenerContainer.java:674) [spring-jms-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.jms.listener.AbstractPollingMessageListenerContainer.doReceiveAndExecute(AbstractPollingMessageListenerContainer.java:318) [spring-jms-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.jms.listener.AbstractPollingMessageListenerContainer.receiveAndExecute(AbstractPollingMessageListenerContainer.java:257) [spring-jms-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.invokeListener(DefaultMessageListenerContainer.java:1173) [spring-jms-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.executeOngoingLoop(DefaultMessageListenerContainer.java:1165) [spring-jms-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.run(DefaultMessageListenerContainer.java:1062) [spring-jms-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_151]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_151]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_151]
Caused by: java.lang.AbstractMethodError: org.apache.activemq.ActiveMQConnection.createSession(I)Ljavax/jms/Session;
at tuomas.springcamel.configuration.camel.CamelRouteBuilder$1.process(CamelRouteBuilder.java:47) ~[classes/:na]
at org.apache.camel.processor.DelegateSyncProcessor.process(DelegateSyncProcessor.java:63) ~[camel-core-2.21.0.jar:2.21.0]
... 18 common frames omitted
2018-04-07 15:34:58.491 WARN 7080 --- [sConsumer[dest]] o.a.c.c.jms.EndpointMessageListener : Execution of JMS message listener failed. Caused by: [org.apache.camel.CamelExecutionException - Exception occurred during execution on the exchange: Exchange[ID-DESKTOP-LI5P50P-1523104493101-0-2]]
org.apache.camel.CamelExecutionException: Exception occurred during execution on the exchange: Exchange[ID-DESKTOP-LI5P50P-1523104493101-0-2]
at org.apache.camel.util.ObjectHelper.wrapCamelExecutionException(ObjectHelper.java:1846) ~[camel-core-2.21.0.jar:2.21.0]
at org.apache.camel.impl.DefaultExchange.setException(DefaultExchange.java:385) ~[camel-core-2.21.0.jar:2.21.0]
at org.apache.camel.processor.DelegateSyncProcessor.process(DelegateSyncProcessor.java:66) ~[camel-core-2.21.0.jar:2.21.0]
at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:548) ~[camel-core-2.21.0.jar:2.21.0]
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:201) ~[camel-core-2.21.0.jar:2.21.0]
at org.apache.camel.processor.Pipeline.process(Pipeline.java:138) ~[camel-core-2.21.0.jar:2.21.0]
at org.apache.camel.processor.Pipeline.process(Pipeline.java:101) ~[camel-core-2.21.0.jar:2.21.0]
at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:201) ~[camel-core-2.21.0.jar:2.21.0]
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:97) ~[camel-core-2.21.0.jar:2.21.0]
at org.apache.camel.component.jms.EndpointMessageListener.onMessage(EndpointMessageListener.java:113) ~[camel-jms-2.21.0.jar:2.21.0]
at org.springframework.jms.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:744) ~[spring-jms-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.jms.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:704) ~[spring-jms-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.jms.listener.AbstractMessageListenerContainer.doExecuteListener(AbstractMessageListenerContainer.java:674) ~[spring-jms-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.jms.listener.AbstractPollingMessageListenerContainer.doReceiveAndExecute(AbstractPollingMessageListenerContainer.java:318) [spring-jms-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.jms.listener.AbstractPollingMessageListenerContainer.receiveAndExecute(AbstractPollingMessageListenerContainer.java:257) [spring-jms-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.invokeListener(DefaultMessageListenerContainer.java:1173) [spring-jms-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.executeOngoingLoop(DefaultMessageListenerContainer.java:1165) [spring-jms-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.run(DefaultMessageListenerContainer.java:1062) [spring-jms-5.0.4.RELEASE.jar:5.0.4.RELEASE]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_151]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_151]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_151]
Caused by: java.lang.AbstractMethodError: org.apache.activemq.ActiveMQConnection.createSession(I)Ljavax/jms/Session;
at tuomas.springcamel.configuration.camel.CamelRouteBuilder$1.process(CamelRouteBuilder.java:47) ~[classes/:na]
at org.apache.camel.processor.DelegateSyncProcessor.process(DelegateSyncProcessor.java:63) ~[camel-core-2.21.0.jar:2.21.0]
... 18 common frames omitted
为什么我不能在Camel处理器中创建ActiveMQ会话，但是我可以在bean中创建？这是否与Spring如何代理ConnectionFactory，驼峰中的错误或ActiveMQ代理的错误配置有关？
答案 0 :(得分：2)
解决方案是修复以下行
Session session = connection.createSession(Session.AUTO_ACKNOWLEDGE);
到
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
似乎ActiveMQ与正在使用的JMS API不兼容