在tomcat中部署战争文件时面对AMQP连接器中的问题

Question

我在mule tomcat中部署战争文件时会在AMQP连接器中遇到错误。在Anypoint Studio中的工作正常，但是在Tomcat中部署时，我会以下错误

org.mule.api.lifecycle.LifecycleException: Failed to invoke lifecycle phase "start" on object: AmqpConnector
{
  name=AMQP_0_9_Connector
  lifecycle=initialise
  this=3eb847dc
  numberOfConcurrentTransactedReceivers=4
  createMultipleTransactedReceivers=true
  connected=false
  supportedProtocols=[amqp]
  serviceOverrides=<none>
}
    at org.mule.lifecycle.phases.DefaultLifecyclePhase.applyLifecycle(DefaultLifecyclePhase.java:248)
    at org.mule.lifecycle.RegistryLifecycleCallback.doApplyLifecycle(RegistryLifecycleCallback.java:91)
    at org.mule.lifecycle.RegistryLifecycleCallback.onTransition(RegistryLifecycleCallback.java:67)
    at org.mule.lifecycle.RegistryLifecycleManager.invokePhase(RegistryLifecycleManager.java:140)
    at org.mule.lifecycle.RegistryLifecycleManager.fireLifecycle(RegistryLifecycleManager.java:111)
    at org.mule.registry.AbstractRegistryBroker.fireLifecycle(AbstractRegistryBroker.java:88)
    at org.mule.registry.MuleRegistryHelper.fireLifecycle(MuleRegistryHelper.java:141)
    at org.mule.lifecycle.MuleContextLifecycleManager$MuleContextLifecycleCallback.onTransition(MuleContextLifecycleManager.java:91)
    at org.mule.lifecycle.MuleContextLifecycleManager$MuleContextLifecycleCallback.onTransition(MuleContextLifecycleManager.java:87)
    at org.mule.lifecycle.MuleContextLifecycleManager.invokePhase(MuleContextLifecycleManager.java:69)
    at org.mule.lifecycle.MuleContextLifecycleManager.fireLifecycle(MuleContextLifecycleManager.java:61)
    at org.mule.DefaultMuleContext.start(DefaultMuleContext.java:294)
    at org.mule.config.builders.MuleXmlBuilderContextListener.initialize(MuleXmlBuilderContextListener.java:96)
    at org.mule.config.builders.MuleXmlBuilderContextListener.contextInitialized(MuleXmlBuilderContextListener.java:70)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:5099)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5615)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
    at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:899)
    at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:875)
    at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:652)
    at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:1092)
    at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1984)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.LinkageError: loader constraint violation: loader (instance of org/apache/catalina/loader/WebappClassLoader) previously initiated loading for a different type with name "org/apache/commons/logging/Log"
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:800)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at org.apache.catalina.loader.WebappClassLoaderBase.findClassInternal(WebappClassLoaderBase.java:3175)
    at org.apache.catalina.loader.WebappClassLoaderBase.findClass(WebappClassLoaderBase.java:1372)
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1860)
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1734)

我正在使用m子3.8.0，我的流量如下

 <amqp:connector name="AMQP_0_9_Connector" validateConnections="true" host="XXX.XX" username="XX" password="XX" doc:name="AMQP-0-9 Connector"/>
 <flow name="rabbitmq_mavenFlow">
        <servlet:inbound-endpoint path="/message" responseTimeout="10000" doc:name="Servlet"/>
        <set-payload value="test message " doc:name="Set Payload"/>
        <amqp:outbound-endpoint  queueName="orders"  queueDurable="true" responseTimeout="10000" exchange-pattern="request-response" connector-ref="AMQP_0_9_Connector" doc:name="AMQP-0-9"/>

请帮助我解决它

谢谢

Answer 1

@user3855589，您可能有两种不同版本的公共场所：一个在战争中，一个在tomcat中。您应该将战争中的一个放在提供的范围(如果您使用的是Maven(中，或将其排除在战争之外，而不是将其部署在Tomcat中。查看类似的错误。