Question

我的配置如下，我没有订户异常，我该如何解决？

<bean id="Beani" class="org.util.Beani" init-method="init" />
<int:gateway id="configHelper" 
    service-interface="org.ncb.quickpay.grs.util.PartnerConfigReader"
    default-request-timeout="5000" default-reply-timeout="5000">
    <int:method name="getConfiguration" request-channel="configChannel" />
</int:gateway>

<int-jpa:retrieving-outbound-gateway 
    entity-manager="entityManager" request-channel="configChannel"
    jpa-query="select s from Setting s where  s.settingsCategory.category=:category">
    <int-jpa:parameter name="category" expression="payload['category']" />
</int-jpa:retrieving-outbound-gateway>

我在bean init方法中调用它

public void init() throws Exception {
    System.out.println(" initialization global MAp  beni ");
    Map msgMap = new HashMap();
    msgMap.put("category", "web_service_dtl");
    Message msg = MessageBuilder.withPayload(msgMap).build();
    List<Setting> configList = configReader.getConfiguration(msg);

    if(configList!=null){
    for (Setting config : configList) {
        globalMap.put(config.getSettingsParameter().getParameterName() + "_"
                + config.getSettingsCategory().getPartnerId(), config.getParamValue());
    }
    }

    System.out.println(" map is  "+globalMap);

}

bean在xml中定义，我得到了异常。

Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'Beani' defined in class path resource [grs-spring-integration.xml]: Invocation of init method failed; nested exception is org.springframework.messaging.MessageDeliveryException: Dispatcher has no subscribers for channel 'org.springframework.context.support.ClassPathXmlApplicationContext@23ab930d.configChannel'.; nested exception is org.springframework.integration.MessageDispatchingException: Dispatcher has no subscribers
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1578)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:776)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
at org.ncb.quickpay.grs.service.main.StartService.main(StartService.java:18)
Caused by: org.springframework.messaging.MessageDeliveryException: Dispatcher has no subscribers for channel 'org.springframework.context.support.ClassPathXmlApplicationContext@23ab930d.configChannel'.; nested exception is org.springframework.integration.MessageDispatchingException: Dispatcher has no subscribers
    at org.springframework.integration.channel.AbstractSubscribableChannel.doSend(AbstractSubscribableChannel.java:81)

请告诉我如何解决？

Answer 1

我在bean init方法中调用它

您不得以init方式开始发送消息;应用程序上下文尚未完全构建，并且您使用的集成组件尚未启动。

您可以实施ApplicationListener<ContextRefreshedEvent>并将代码放在那里;或者实现SmartLifecycle，将你的bean放在迟到的Phase中，并将你的代码放在start()中。无论哪种方式，集成组件都将在那时开始。

看起来您仍在尝试解决this question以加载全局属性。我给了你另一个可行的解决方案，但你不能在上下文启动之前调用消息组件;不管你在哪里做。

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