Spring集成

Question

我已经使用入站通道适配器实现了一个轮询器，代码工作得很好，但是它抛出了这个我无法解决的特殊异常

11:43:27.664 [main] DEBUG o.s.i.u.MessagingMethodInvokerHelper - Method [public void com.ms.aps.fsmessaging.alert.QueryServiceActivator.getMessageProcessStatus(byte[],com.ms.aps.fsmessaging.alert.types.MessageType,java.lang.String) throws java.lang.Exception] is not eligible for Message handling.
java.lang.IllegalArgumentException: Found more than one parameter type candidate: [byte[]] and [com.ms.aps.fsmessaging.alert.types.MessageType]
    at org.springframework.util.Assert.isNull(Assert.java:89) ~[org.springframework.core.jar:3.0.5.RELEASE]
    at org.springframework.integration.util.MessagingMethodInvokerHelper$HandlerMethod.setExclusiveTargetParameterType(MessagingMethodInvokerHelper.java:623) ~[spring-integration-core-2.0.5.jar:na]
    at org.springframework.integration.util.MessagingMethodInvokerHelper$HandlerMethod.generateExpression(MessagingMethodInvokerHelper.java:557) ~[spring-integration-core-2.0.5.jar:na]
    at org.springframework.integration.util.MessagingMethodInvokerHelper$HandlerMethod.<init>(MessagingMethodInvokerHelper.java:437) ~[spring-integration-core-2.0.5.jar:na]
    at org.springframework.integration.util.MessagingMethodInvokerHelper$1.doWith(MessagingMethodInvokerHelper.java:300) ~[spring-integration-core-2.0.5.jar:na]
    at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:452) [org.springframework.core.jar:3.0.5.RELEASE]
    at org.springframework.integration.util.MessagingMethodInvokerHelper.findHandlerMethodsForTarget(MessagingMethodInvokerHelper.java:274) [spring-integration-core-2.0.5.jar:na]
    at org.springframework.integration.util.MessagingMethodInvokerHelper.<init>(MessagingMethodInvokerHelper.java:167) [spring-integration-core-2.0.5.jar:na]
    at org.springframework.integration.util.MessagingMethodInvokerHelper.<init>(MessagingMethodInvokerHelper.java:119) [spring-integration-core-2.0.5.jar:na]
    at org.springframework.integration.util.MessagingMethodInvokerHelper.<init>(MessagingMethodInvokerHelper.java:114) [spring-integration-core-2.0.5.jar:na]
    at org.springframework.integration.handler.MethodInvokingMessageProcessor.<init>(MethodInvokingMessageProcessor.java:56) [spring-integration-core-2.0.5.jar:na]
    at org.springframework.integration.handler.ServiceActivatingHandler.<init>(ServiceActivatingHandler.java:34) [spring-integration-core-2.0.5.jar:na]
    at org.springframework.integration.config.ServiceActivatorFactoryBean.createMethodInvokingHandler(ServiceActivatorFactoryBean.java:48) [spring-integration-core-2.0.5.jar:na]
    at org.springframework.integration.config.AbstractStandardMessageHandlerFactoryBean.createHandler(AbstractStandardMessageHandlerFactoryBean.java:72) [spring-integration-core-2.0.5.jar:na]
    at org.springframework.integration.config.AbstractSimpleMessageHandlerFactoryBean.createHandlerInternal(AbstractSimpleMessageHandlerFactoryBean.java:89) [spring-integration-core-2.0.5.jar:na]
    at org.springframework.integration.config.AbstractSimpleMessageHandlerFactoryBean.getObject(AbstractSimpleMessageHandlerFactoryBean.java:68) [spring-integration-core-2.0.5.jar:na]
    at org.springframework.integration.config.AbstractSimpleMessageHandlerFactoryBean.getObject(AbstractSimpleMessageHandlerFactoryBean.java:31) [spring-integration-core-2.0.5.jar:na]
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:142) [org.springframework.beans.jar:3.0.5.RELEASE]
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:102) [org.springframework.beans.jar:3.0.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1429) [org.springframework.beans.jar:3.0.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:245) [org.springframework.beans.jar:3.0.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) [org.springframework.beans.jar:3.0.5.RELEASE]
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:322) [org.springframework.beans.jar:3.0.5.RELEASE]
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:106) [org.springframework.beans.jar:3.0.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1325) [org.springframework.beans.jar:3.0.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1086) [org.springframework.beans.jar:3.0.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517) [org.springframework.beans.jar:3.0.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456) [org.springframework.beans.jar:3.0.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291) [org.springframework.beans.jar:3.0.5.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) [org.springframework.beans.jar:3.0.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288) [org.springframework.beans.jar:3.0.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190) [org.springframework.beans.jar:3.0.5.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:563) [org.springframework.beans.jar:3.0.5.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895) [org.springframework.context.jar:3.0.5.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:425) [org.springframework.context.jar:3.0.5.RELEASE]
    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) [org.springframework.context.jar:3.0.5.RELEASE]
    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83) [org.springframework.context.jar:3.0.5.RELEASE]
    at com.ms.aps.fsmessaging.alert.StartPolling.main(StartPolling.java:20) [.ide-bin/:na]

我已经使用行映射器将输出配置为存储结果集的bean的对象形式。

Answer 1

这只是一条调试消息，当我们迭代服务以找到匹配的方法时。这是良性的，没有什么好担心的。

Answer 2

您的服务激活器处理程序方法getMessageProcessStatus无法处理接收的输入数据类型。只要按照预期使用适当的数据类型即可。

它找不到匹配的方法，它是您在服务激活器中提供的方法名称。