【发布时间】：2013-03-13 16:43:17
【问题描述】：
我对 Camel 相当陌生，并且一直在尝试使用 requestBody，但不断收到错误消息。我已经简化了我的代码，但仍然得到相同的异常。如果我的猜测是正确的，那么关键可能是消息“无法为端点创建生产者”，但我不确定如何使用 Java DSL 来做到这一点。
有人可以指出我做错了什么的骆驼文档。感谢您的帮助。
这是简化的代码。
package nz.co.home.cameljmsrequest;
import org.apache.camel.CamelContext;
import org.apache.camel.ProducerTemplate;
import org.apache.camel.component.activemq.ActiveMQComponent;
import org.apache.camel.impl.DefaultCamelContext;
public class App {
public static void main(String[] args) throws Exception {
// set up the underlying camel context and add the ActiveMQ component
CamelContext camelContext = new DefaultCamelContext();
camelContext.addComponent(
"jms",
ActiveMQComponent.activeMQComponent("tcp://192.168.1.150:61616")
);
// start the context
camelContext.start();
// send the message
ProducerTemplate producer = camelContext.createProducerTemplate();
String requestBody = producer.requestBody("jms:queue:test",
"Request Message", String.class);
System.out.println(requestBody);
// stop the context
camelContext.stop();
// just because we can
System.out.println("sent message");
}
}
生成的消息如下所示：
Exception in thread "main" org.apache.camel.CamelExecutionException: Exception occurred during execution on the exchange: Exchange[Message: Request Message]
at org.apache.camel.util.ObjectHelper.wrapCamelExecutionException(ObjectHelper.java:1287)
at org.apache.camel.util.ExchangeHelper.extractResultBody(ExchangeHelper.java:618)
at org.apache.camel.impl.DefaultProducerTemplate.extractResultBody(DefaultProducerTemplate.java:454)
at org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:120)
at org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:136)
at org.apache.camel.impl.DefaultProducerTemplate.requestBody(DefaultProducerTemplate.java:284)
at org.apache.camel.impl.DefaultProducerTemplate.requestBody(DefaultProducerTemplate.java:314)
at nz.co.home.cameljmsrequest.App.main(App.java:23)
Caused by: org.apache.camel.FailedToCreateProducerException: Failed to create Producer for endpoint: Endpoint[jms://queue:testCamelActiveMq]. Reason: java.lang.IllegalArgumentException: connectionFactory must be specified
at org.apache.camel.component.jms.JmsProducer.initReplyManager(JmsProducer.java:98)
at org.apache.camel.component.jms.JmsProducer.processInOut(JmsProducer.java:164)
at org.apache.camel.component.jms.JmsProducer.process(JmsProducer.java:129)
at org.apache.camel.processor.UnitOfWorkProcessor.processAsync(UnitOfWorkProcessor.java:150)
at org.apache.camel.processor.UnitOfWorkProcessor.process(UnitOfWorkProcessor.java:117)
at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:99)
at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:86)
at org.apache.camel.processor.UnitOfWorkProducer.process(UnitOfWorkProducer.java:63)
at org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:366)
at org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:337)
at org.apache.camel.impl.ProducerCache.doInProducer(ProducerCache.java:233)
at org.apache.camel.impl.ProducerCache.sendExchange(ProducerCache.java:337)
at org.apache.camel.impl.ProducerCache.send(ProducerCache.java:192)
at org.apache.camel.impl.DefaultProducerTemplate.send(DefaultProducerTemplate.java:115)
at org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:119)
... 4 more
Caused by: java.lang.IllegalArgumentException: connectionFactory must be specified
at org.apache.camel.util.ObjectHelper.notNull(ObjectHelper.java:290)
at org.apache.camel.component.jms.JmsConfiguration.createConnectionFactory(JmsConfiguration.java:1052)
at org.apache.camel.component.jms.JmsConfiguration.getConnectionFactory(JmsConfiguration.java:415)
at org.apache.camel.component.jms.JmsEndpoint.getConnectionFactory(JmsEndpoint.java:468)
at org.apache.camel.component.jms.reply.TemporaryQueueReplyManager.createListenerContainer(TemporaryQueueReplyManager.java:115)
at org.apache.camel.component.jms.reply.ReplyManagerSupport.doStart(ReplyManagerSupport.java:222)
at org.apache.camel.support.ServiceSupport.start(ServiceSupport.java:60)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:62)
at org.apache.camel.util.ServiceHelper.startService(ServiceHelper.java:52)
at org.apache.camel.component.jms.JmsProducer.createReplyManager(JmsProducer.java:503)
at org.apache.camel.component.jms.JmsProducer.initReplyManager(JmsProducer.java:94)
... 18 more
【问题讨论】：
标签： jms apache-camel