我必须使用xmls中的Spring集成将项目转换为Java配置，并在下面尝试，但我得到例外。
我想要实现的是，创建一个消息侦听器，它侦听队列目标上的消息，将其放到一个通道上，该通道由放入下一个通道的xsl转换器读取和处理，该通道再次被读取并由JaxbUnmarshaller处理以创建Java对象并将其作为第三个通道，将由Java Consumer使用。如果出现错误，则将消息放在错误通道上，该通道也是处理它的Java使用者。
以下是Spring配置
<int:channel id="channel_1"/>
<int:channel id="channel_2"/>
<int:channel id="channel_3"/>
<int:channel id="channel_error"/>
<int-jms:message-driven-channel-adapter connection-factory="factory" destination-name="destName"
pub-sub-domain="false" channel="channel_1" error-channel="channel_error"/>
<int-xml:xslt-transformer input-channel="channel_1" output-channel="channel_2" xsl-resource="classpath:sample.xsl"/>
<int-xml:unmarshalling-transformer input-channel="channel_2" output-channel="channel_3" unmarshaller="unmarshaller"/>
<oxm:jaxb2-marshaller id="unmarshaller">
<oxm:class-to-be-bound name="sample.example.MyData"/>
</oxm:jaxb2-marshaller>
<int:outbound-channel-adapter channel="channel_3" ref="consumer" method="handleMessage"/>
<bean id="consumer" class="sample.example.MyConsumer"></bean>
<int:outbound-channel-adapter channel="channel_error" ref="consumer" method="handleError"/>
以下是我为此提供的Java配置
@Bean
public MessageChannel channel_1() {
return new DirectChannel();
}
@Bean
public MessageChannel channel_2() {
return new DirectChannel();
}
@Bean
public MessageChannel channel_3() {
return new DirectChannel();
}
@Bean
public MessageChannel channel_error() {
return new DirectChannel();
}
@Bean
@Autowired
public DefaultMessageListenerContainer container(String destinationQueueName) {
DefaultMessageListenerContainer container = new DefaultMessageListenerContainer();
container.setConnectionFactory(factory());
container.setDestinationName(destinationQueueName);
container.setPubSubDomain(false);
container.setMessageListener(messageListener());
return container;
}
@Bean
public ChannelPublishingJmsMessageListener messageListener(){
ChannelPublishingJmsMessageListener adapter = new ChannelPublishingJmsMessageListener();
adapter.setRequestChannel(channel_1());
adapter.setErrorChannel(channel_error());
return adapter;
}
@Bean
@Transformer(inputChannel = "channel_1", outputChannel = "channel_2")
public XsltPayloadTransformer transformer() {
return new XsltPayloadTransformer(new ClassPathResource("sample.xsl"));
}
@Bean
@Transformer(inputChannel = "channel_2", outputChannel = "channel_3")
public UnmarshallingTransformer unmarshallingTransformer() {
return new UnmarshallingTransformer(unmarshaller());
}
@Bean
public Jaxb2Marshaller unmarshaller() {
Jaxb2Marshaller unmarshaller = new Jaxb2Marshaller();
unmarshaller.setClassesToBeBound(MyData.class);
return unmarshaller;
}
@Bean
@ServiceActivator(inputChannel = "channel_3")
public MessageHandler messageHandler() {
return new MethodInvokingMessageHandler(consumer(), "handleMessage");
}
@Bean
@ServiceActivator(inputChannel = "channel_error")
public MessageHandler errorHandler() {
return new MethodInvokingMessageHandler(consumer(), "handleError");
}
我得到以下异常，当我引用此异常时，它表示服务激活器配置不正确。我不确定我错过了什么，有人可以帮忙。
org.springframework.messaging.MessageDeliveryException: Dispatcher has no subscribers for channel 'org.springframework.web.context.WebApplicationContext:/v1.channel_error'.; nested exception is org.springframework.integration.MessageDispatchingException: Dispatcher has no subscribers
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:81)
at org.springframework.integration.channel.AbstractMessageChannel.send(AbstractMessageChannel.java:287)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:115)
at org.springframework.messaging.core.GenericMessagingTemplate.doSend(GenericMessagingTemplate.java:45)
at org.springframework.messaging.core.AbstractMessageSendingTemplate.send(AbstractMessageSendingTemplate.java:95)
at org.springframework.integration.gateway.MessagingGatewaySupport.send(MessagingGatewaySupport.java:281)
at org.springframework.integration.jms.ChannelPublishingJmsMessageListener$GatewayDelegate.send(ChannelPublishingJmsMessageListener.java:479)
at org.springframework.integration.jms.ChannelPublishingJmsMessageListener.onMessage(ChannelPublishingJmsMessageListener.java:322)
at org.springframework.jms.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:674)
at org.springframework.jms.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:634)
at org.springframework.jms.listener.AbstractMessageListenerContainer.doExecuteListener(AbstractMessageListenerContainer.java:605)
at org.springframework.jms.listener.AbstractPollingMessageListenerContainer.doReceiveAndExecute(AbstractPollingMessageListenerContainer.java:308)
at org.springframework.jms.listener.AbstractPollingMessageListenerContainer.receiveAndExecute(AbstractPollingMessageListenerContainer.java:246)
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.invokeListener(DefaultMessageListenerContainer.java:1144)
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.executeOngoingLoop(DefaultMessageListenerContainer.java:1136)
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.run(DefaultMessageListenerContainer.java:1033)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.integration.MessageDispatchingException: Dispatcher has no subscribers
at org.springframework.integration.dispatcher.UnicastingDispatcher.doDispatch(UnicastingDispatcher.java:107)
at org.springframework.integration.dispatcher.UnicastingDispatcher.dispatch(UnicastingDispatcher.java:97)
at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:77)
... 16 more
登录启动：
2016-03-30 13:06:46,423 DEBUG org.springframework.web.context.support.StandardServletEnvironment.addLast[109] - Adding [servletConfigInitParams] PropertySource with lowest search precedence
2016-03-30 13:06:46,403 DEBUG com.amazonaws.jmx.MBeans.registerMBean[58] - Failed to register mbean com.amazonaws.management:type=AwsSdkMetrics
javax.management.InstanceAlreadyExistsException: com.amazonaws.management:type=AwsSdkMetrics
at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324)
at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522)
at com.amazonaws.jmx.MBeans.registerMBean(MBeans.java:52)
at com.amazonaws.jmx.SdkMBeanRegistrySupport.registerMetricAdminMBean(SdkMBeanRegistrySupport.java:27)
at com.amazonaws.metrics.AwsSdkMetrics.registerMetricAdminMBean(AwsSdkMetrics.java:355)
at com.amazonaws.metrics.AwsSdkMetrics.<clinit>(AwsSdkMetrics.java:316)
at com.amazonaws.AmazonWebServiceClient.requestMetricCollector(AmazonWebServiceClient.java:629)
at com.amazonaws.AmazonWebServiceClient.isRMCEnabledAtClientOrSdkLevel(AmazonWebServiceClient.java:570)
at com.amazonaws.AmazonWebServiceClient.isRequestMetricsEnabled(AmazonWebServiceClient.java:562)
at com.amazonaws.AmazonWebServiceClient.createExecutionContext(AmazonWebServiceClient.java:523)
at com.amazonaws.services.sqs.AmazonSQSClient.getQueueUrl(AmazonSQSClient.java:525)
at com.amazon.sqs.javamessaging.AmazonSQSMessagingClientWrapper.getQueueUrl(AmazonSQSMessagingClientWrapper.java:260)
at com.amazon.sqs.javamessaging.AmazonSQSMessagingClientWrapper.getQueueUrl(AmazonSQSMessagingClientWrapper.java:230)
at com.amazon.sqs.javamessaging.SQSSession.createQueue(SQSSession.java:576)
at org.springframework.jms.support.destination.DynamicDestinationResolver.resolveQueue(DynamicDestinationResolver.java:84)
at org.springframework.jms.support.destination.DynamicDestinationResolver.resolveDestinationName(DynamicDestinationResolver.java:58)
at org.springframework.jms.support.destination.JmsDestinationAccessor.resolveDestinationName(JmsDestinationAccessor.java:98)
at org.springframework.jms.listener.AbstractPollingMessageListenerContainer.createListenerConsumer(AbstractPollingMessageListenerContainer.java:204)
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.initResourcesIfNecessary(DefaultMessageListenerContainer.java:1167)
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.invokeListener(DefaultMessageListenerContainer.java:1143)
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.executeOngoingLoop(DefaultMessageListenerContainer.java:1136)
at org.springframework.jms.listener.DefaultMessageListenerContainer$AsyncMessageListenerInvoker.run(DefaultMessageListenerContainer.java:1033)
at java.lang.Thread.run(Thread.java:745)
2016-03-30 13:06:46,423 DEBUG org.springframework.web.context.support.StandardServletEnvironment.addLast[109] - Adding [servletConfigInitParams] PropertySource with lowest search precedence
2016-03-30 13:06:46,427 DEBUG org.springframework.web.context.support.StandardServletEnvironment.addLast[109] - Adding [servletContextInitParams] PropertySource with lowest search precedence
2016-03-30 13:06:46,427 DEBUG com.amazonaws.metrics.AwsSdkMetrics.registerMetricAdminMBean[369] - Admin mbean registered under com.amazonaws.management:type=AwsSdkMetrics/4
2016-03-30 13:06:46,427 DEBUG org.springframework.web.context.support.StandardServletEnvironment.addLast[109] - Adding [servletContextInitParams] PropertySource with lowest search precedence
2016-03-30 13:06:46,428 DEBUG org.springframework.web.context.support.StandardServletEnvironment.addLast[109] - Adding [jndiProperties] PropertySource with lowest search precedence
2016-03-30 13:06:46,428 DEBUG org.springframework.web.context.support.StandardServletEnvironment.addLast[109] - Adding [jndiProperties] PropertySource with lowest search precedence
2016-03-30 13:06:46,428 DEBUG org.springframework.web.context.support.StandardServletEnvironment.addLast[109] - Adding [systemProperties] PropertySource with lowest search precedence
2016-03-30 13:06:46,428 DEBUG org.springframework.web.context.support.StandardServletEnvironment.addLast[109] - Adding [systemProperties] PropertySource with lowest search precedence
2016-03-30 13:06:46,428 DEBUG org.springframework.web.context.support.StandardServletEnvironment.addLast[109] - Adding [systemEnvironment] PropertySource with lowest search precedence
2016-03-30 13:06:46,428 DEBUG org.springframework.web.context.support.StandardServletEnvironment.addLast[109] - Adding [systemEnvironment] PropertySource with lowest search precedence
2016-03-30 13:06:46,429 DEBUG org.springframework.web.context.support.StandardServletEnvironment.<init>[126] - Initialized StandardServletEnvironment with PropertySources [servletConfigInitParams,servletContextInitParams,jndiProperties,systemProperties,systemEnvironment]
2016-03-30 13:06:46,429 DEBUG org.springframework.web.context.support.StandardServletEnvironment.<init>[126] - Initialized StandardServletEnvironment with PropertySources [servletConfigInitParams,servletContextInitParams,jndiProperties,systemProperties,systemEnvironment]
2016-03-30 13:06:46,432 DEBUG com.choiceedge.library.common.service.v1.endpoint.AbstractEndpoint$RequestContextAwareFilter.init[177] - Initializing filter 'RequestContextAwareFilter'
2016-03-30 13:06:46,436 DEBUG com.choiceedge.library.common.service.v1.endpoint.AbstractEndpoint$RequestContextAwareFilter.init[202] - Filter 'RequestContextAwareFilter' configured successfully
2016-03-30 13:06:46,437 DEBUG com.amazonaws.auth.AWSCredentialsProviderChain.getCredentials[105] - Loading credentials from EnvironmentVariableCredentialsProvider
2016-03-30 13:06:46,438 DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBean[248] - Returning cached instance of singleton bean 'cxf'
2016-03-30 13:06:46,438 DEBUG org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBean[248] - Returning cached instance of singleton bean 'cxf'
这是我在WebApplicationInitializer
中注册AppConfig的方法 @Override
public void onStartup(final ServletContext servletContext) throws ServletException {
rootContext = new AnnotationConfigWebApplicationContext();
rootContext.getEnvironment().setActiveProfiles(System.getenv(ENVIRONMENT));
LOGGER.info(System.getenv(ENVIRONMENT));
System.out.println("Starting application in " + System.getenv(ENVIRONMENT));
rootContext.register(AppConfig.class);
rootContext.setDisplayName(DISPLAY_NAME);
// Manage the lifecycle of the root application context
servletContext.addListener(new ContextLoaderListener(rootContext));
.....
在我的AppConfig中我有
@Configuration
@ImportResource("...") - this is for another custom library
@ComponentScan(...)
@EnableIntegration
public class AppConfig {
答案 0 :(得分：2)
你错过了@EnableIntegration上的@Configuration吗？
从版本4.0开始，引入了@EnableIntegration注释，以允许注册Spring Integration基础结构bean（请参阅JavaDocs）。只有Java和Java时才需要这个注释。使用注释配置，例如， Spring Boot和/或Spring Integration Messaging Annotation支持和Spring Integration Java DSL，没有XML集成配置。
答案 1 :(得分：0)
已解决：解决问题的变化是将频道自动装配到收听者。并将PropertyPlaceHolderConfigurer bean设为静态
@Bean
@Autowired
public ChannelPublishingJmsMessageListener messageListener(MessageChannel channel_1, MessageChannel channel_error){
ChannelPublishingJmsMessageListener adapter = new ChannelPublishingJmsMessageListener();
adapter.setRequestChannel(channel_1);
adapter.setErrorChannel(channel_error);
return adapter;
}