我正在尝试使用tomcat的context.xml中定义的JNDI查找连接到MQ。在启动应用程序时，我在FFDC中获得NamingException和NullPointer。以下是记录的内容。我无法弄清楚出了什么问题。有关如何调试此功能的任何说明都会有所帮助 MQ VERSION：
[tomcat@catlx0004 ~]$ /opt/mqm/bin/dspmqver -a
Name: WebSphere MQ
Version: 7.0.1.12
CMVC level: p701-112-140319
BuildType: IKAP - (Production)
Platform: WebSphere MQ for Linux (x86-64 platform)
Mode: 64-bit
O/S: Linux 2.6.32-358.2.1.el6.x86_64
日志中的异常：
FFDC called in uninitialized Trace module
FDCTitle
Product :- ProductName
Date/Time :- Thu May 28 19:05:48 UTC 2015
System time :- 1432839948804
Operating System :- Linux
UserID :- tomcat
Java Vendor :- Oracle Corporation
Java Version :- 24.45-b08
Source Class :- com.ibm.msg.client.commonservices.nls.PINLSServices
Source Method :- createException(String,HashMap)
ProbeID :- XC003001
Thread :- name=localhost-startStop-1 priority=5 group=main ccl=WebappClassLoader
context: /CWL_UserSettings
delegate: false
repositories:
/WEB-INF/classes/
----------> Parent Classloader:
org.apache.catalina.loader.StandardClassLoader@7dc3d69c
Data
----
Data :- none
No Components Found
Stack trace
-----------
Stack trace to show the location of the FFST call
| FFST Location :- java.lang.Exception
| at com.ibm.msg.client.commonservices.trace.Trace.getCurrentPosition(Trace.java:1854)
| at com.ibm.msg.client.commonservices.trace.Trace.createFFSTString(Trace.java:1793)
| at com.ibm.msg.client.commonservices.trace.Trace.ffstInternal(Trace.java:1674)
| at com.ibm.msg.client.commonservices.trace.Trace.ffst(Trace.java:1491)
| at com.ibm.msg.client.commonservices.nls.PINLSServices.createException(PINLSServices.java:115)
| at com.ibm.msg.client.commonservices.nls.NLSServices.createException(NLSServices.java:388)
| at com.ibm.msg.client.jms.internal.JmsErrorUtils.createException(JmsErrorUtils.java:104)
| at com.ibm.msg.client.jms.internal.JmsFactoryFactoryImpl.getInstance(JmsFactoryFactoryImpl.java:167)
| at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| at java.lang.reflect.Method.invoke(Unknown Source)
| at com.ibm.msg.client.jms.JmsFactoryFactory.getInstance(JmsFactoryFactory.java:183)
| at com.ibm.mq.jms.MQConnectionFactory.initialiseMQConnectionFactory(MQConnectionFactory.java:3330)
| at com.ibm.mq.jms.MQConnectionFactory.<init>(MQConnectionFactory.java:275)
| at com.ibm.mq.jms.MQQueueConnectionFactory.<init>(MQQueueConnectionFactory.java:76)
| at com.ibm.mq.jms.MQQueueConnectionFactoryFactory.getObjectInstance(MQQueueConnectionFactoryFactory.java:73)
| at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java
..........
Property Store Contents
-----------------------
All currently set properties
| EKMC_PROPERTY :- /apps/ekmc/devcell/devnode/tomcat/certs/ekmcconfig.dev.properties
| MQJMS_TRACE_DIR :-
| MQJMS_TRACE_LEVEL :-
| WXSGRIDNAME :- TARGET_SSA_DEV_GRID
| java.runtime.name :- Java(TM) SE Runtime Environment
| java.runtime.version :- 1.7.0_45-b18
| java.security.egd :- file:/dev/./urandom
| java.specification.name :- Java Platform API Specification
| java.specification.vendor :- Oracle Corporation
| java.specification.version :- 1.7
| shared.loader :- ${catalina.home}/shared/*.jar,${catalina.home}/shared/EKMC/*.jar,${catalina.home}/shared/WXSClient/*.jar,${catalina.home}/shared/servlet/*.jar,/opt/mqm/java/lib/*.jar,/opt/mqm/java/lib/*.jar
| sun.boot.class.path :- /apps/install/tomcat7.59/shared/WXSClient/ibmorbapi.jar:/apps/install/tomcat7.59/shared/WXSClient/ibmcfw.jar:/apps/install/tomcat7.59/shared/WXSClient/ibmorb.jar:/apps/install/tomcat7.59/shared/WXSClient/ogclient.jar:/apps/install/java/jre1.7.0_45/lib/resources.jar:/apps/install/java/jre1.7.0_45/lib/rt.jar:/apps/install/java/jre1.7.0_45/lib/sunrsasign.jar:/apps/install/java/jre1.7.0_45/lib/jsse.jar:/apps/install/java/jre1.7.0_45/lib/jce.jar:/apps/install/java/jre1.7.0_45/lib/charsets.jar:/apps/install/java/jre1.7.0_45/lib/jfr.jar:/apps/install/java/jre1.7.0_45/classes
......
FDCTitle
Product :- ProductName
Date/Time :- Thu May 28 19:05:48 UTC 2015
System time :- 1432839948830
Operating System :- Linux
UserID :- tomcat
Java Vendor :- Oracle Corporation
Java Version :- 24.45-b08
Source Class :- JmsFactoryFactory
Source Method :- getIntance(int)
ProbeID :- XI001005
Thread :- name=localhost-startStop-1 priority=5 group=main ccl=WebappClassLoader
context: /CWL_UserSettings
delegate: false
repositories:
/WEB-INF/classes/
----------> Parent Classloader:
org.apache.catalina.loader.StandardClassLoader@7dc3d69c
Data
----
| connectionTypeName :- com.ibm.msg.client.wmq
| exception :- ExceptionDepth is 3
| exception :-
| | Cause:1 :- java.lang.reflect.InvocationTargetException
| | Cause:2 :- java.lang.NullPointerException
| | StackTrace:1 :- java.lang.reflect.InvocationTargetException
| | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| | at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
| | at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| | at java.lang.reflect.Method.invoke(Unknown Source)
| | at com.ibm.msg.client.jms.JmsFactoryFactory.getInstance(JmsFactoryFactory.java:183)
| | at com.ibm.mq.jms.MQConnectionFactory.initialiseMQConnectionFactory(MQConnectionFactory.java:3330)
| | at com.ibm.mq.jms.MQConnectionFactory.<init>(MQConnectionFactory.java:275)
| | at com.ibm.mq.jms.MQQueueConnectionFactory.<init>(MQQueueConnectionFactory.java:76)
| | at com.ibm.mq.jms.MQQueueConnectionFactoryFactory.getObjectInstance(MQQueueConnectionFactoryFactory.java:73)
| | at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:141)
| | at javax.naming.spi.NamingManager.getObjectInstance(Unknown Source)
| | at org.apache.naming.NamingContext.lookup(NamingContext.java:842)
| | at org.apache.naming.NamingContext.lookup(NamingContext.java:153)
| | at org.apache.naming.NamingContext.lookup(NamingContext.java:830)
| | at org.apache.naming.NamingContext.lookup(NamingContext.java:153)
| | at org.apache.naming.NamingContext.lookup(NamingContext.java:830)
| | at org.apache.naming.NamingContext.lookup(NamingContext.java:153)
| | at org.apache.naming.NamingContext.lookup(NamingContext.java:830)
| | at org.apache.naming.NamingContext.lookup(NamingContext.java:167)
| | at org.apache.naming.SelectorContext.lookup(SelectorContext.java:156)
| | at javax.naming.InitialContext.lookup(Unknown Source)
| | at com.tgt.cwl.msg.config.MessagingConfig.mqQueueConnectionFactory(MessagingConfig.java:41)
| | at com.tgt.cwl.msg.config.MessagingConfig$$EnhancerBySpringCGLIB$$c5afe578.CGLIB$mqQueueConnectionFactory$1(<generated>)
| | at com.tgt.cwl.msg.config.MessagingConfig$$EnhancerBySpringCGLIB$$c5afe578$$FastClassBySpringCGLIB$$99d29d2a.invoke(<generated>)
| | at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
| | at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:309)
| | at com.tgt.cwl.msg.config.MessagingConfig$$EnhancerBySpringCGLIB$$c5afe578.mqQueueConnectionFactory(<generated>)
| | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| | at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
| | at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| | at java.lang.reflect.Method.invoke(Unknown Source)
| | at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
| | at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
| | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1119)
| | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1014)
| | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
| | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
| | at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
| | at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
| | at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
| | at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
| | at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:322)
| | at com.tgt.cwl.msg.config.MessagingConfig$$EnhancerBySpringCGLIB$$c5afe578.mqQueueConnectionFactory(<generated>)
| | at com.tgt.cwl.msg.config.MessagingConfig.userConnectionFactory(MessagingConfig.java:57)
| | at com.tgt.cwl.msg.config.MessagingConfig$$EnhancerBySpringCGLIB$$c5afe578.CGLIB$userConnectionFactory$0(<generated>)
| | at com.tgt.cwl.msg.config.MessagingConfig$$EnhancerBySpringCGLIB$$c5afe578$$FastClassBySpringCGLIB$$99d29d2a.invoke(<generated>)
| | at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
| | at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:309)
| | at com.tgt.cwl.msg.config.MessagingConfig$$EnhancerBySpringCGLIB$$c5afe578.userConnectionFactory(<generated>)
| | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| | at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
| | at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| | at java.lang.reflect.Method.invoke(Unknown Source)
| | at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
| | at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
| | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1119)
| | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1014)
| | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
| | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
| | at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
| | at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
| | at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
| | at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
| | at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:322)
| | at com.tgt.cwl.msg.config.MessagingConfig$$EnhancerBySpringCGLIB$$c5afe578.userConnectionFactory(<generated>)
| | at com.tgt.cwl.msg.config.MessagingConfig.connectionFactory(MessagingConfig.java:72)
| | at com.tgt.cwl.msg.config.MessagingConfig$$EnhancerBySpringCGLIB$$c5afe578.CGLIB$connectionFactory$4(<generated>)
| | at com.tgt.cwl.msg.config.MessagingConfig$$EnhancerBySpringCGLIB$$c5afe578$$FastClassBySpringCGLIB$$99d29d2a.invoke(<generated>)
| | at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
| | at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:309)
| | at com.tgt.cwl.msg.config.MessagingConfig$$EnhancerBySpringCGLIB$$c5afe578.connectionFactory(<generated>)
| | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| | at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
| | at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| | at java.lang.reflect.Method.invoke(Unknown Source)
| | at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162)
| | at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588)
| | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1119)
| | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1014)
| | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
| | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
| | at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
| | at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
| | at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
| | at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
| | at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1120)
| | at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1044)
| | at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:942)
| | at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:533)
| | at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
| | at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331)
| | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1210)
| | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537)
| | at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
| | at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
| | at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
| | at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
| | at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
| | at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755)
| | at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
| | at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
| | at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:663)
| | at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:629)
| | at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:677)
| | at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:548)
| | at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:489)
| | at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
| | at javax.servlet.GenericServlet.init(GenericServlet.java:158)
| | at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1284)
| | at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1197)
| | at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1087)
| | at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:5262)
| | at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5550)
| | at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
| | at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
| | at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
| | at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:649)
| | at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:672)
| | at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1859)
| | at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
| | at java.util.concurrent.FutureTask.run(Unknown Source)
| | at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
| | at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
| | at java.lang.Thread.run(Unknown Source)
| | Caused by: java.lang.NullPointerException
| | at com.ibm.msg.client.jms.internal.JmsFactoryFactoryImpl.getInstance(JmsFactoryFactoryImpl.java:169)
| | ... 124 more
| |
| | StackTrace:2 :- java.lang.NullPointerException
| | at com.ibm.msg.client.jms.internal.JmsFactoryFactoryImpl.getInstance(JmsFactoryFactoryImpl.java:169)
| | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| | at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
| | at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| | at java.lang.reflect.Method.invoke(Unknown Source)
| | at com.ibm.msg.client.jms.JmsFactoryFactory.getInstance(JmsFactoryFactory.java:183)
| | at com.ibm.mq.jms.MQConnectionFactory.initialiseMQConnectionFactory(MQConnectionFactory.java:3330)
| | at com.ibm.mq.jms.MQConnectionFactory.<init>(MQConnectionFactory.java:275)
| | at com.ibm.mq.jms.MQQueueConnectionFactory.<init>(MQQueueConnectionFactory.java:76)
| | at com.ibm.mq.jms.MQQueueConnectionFactoryFactory.getObjectInstance(MQQueueConnectionFactoryFactory.java:73)
.......
No Components Found
Stack trace
-----------
Stack trace to show the location of the FFST call
| FFST Location :- java.lang.Exception
| at com.ibm.msg.client.commonservices.trace.Trace.getCurrentPosition(Trace.java:1854)
| at com.ibm.msg.client.commonservices.trace.Trace.createFFSTString(Trace.java:1793)
| at com.ibm.msg.client.commonservices.trace.Trace.ffstInternal(Trace.java:1674)
| at com.ibm.msg.client.commonservices.trace.Trace.ffst(Trace.java:1540)
| at com.ibm.msg.client.jms.JmsFactoryFactory.getInstance(JmsFactoryFactory.java:215)
| at com.ibm.mq.jms.MQConnectionFactory.initialiseMQConnectionFactory(MQConnectionFactory.java:3330)
| at com.ibm.mq.jms.MQConnectionFactory.<init>(MQConnectionFactory.java:275)
| at com.ibm.mq.jms.MQQueueConnectionFactory.<init>(MQQueueConnectionFactory.java:76)
| at com.ibm.mq.jms.MQQueueConnectionFactoryFactory.getObjectInstance(MQQueueConnectionFactoryFactory.java:73)
| at org.apache.naming.factory.ResourceFactory.getObjectInstance(ResourceFactory.java:141)
| at javax.naming.spi.NamingManager.getObjectInstance(Unknown Source)
| at org.apache.naming.NamingContext.lookup(NamingContext.java:842)
| at org.apache.naming.NamingContext.lookup(NamingContext.java:153)
| at org.apache.naming.NamingContext.lookup(NamingContext.java:830)
| at org.apache.naming.NamingContext.lookup(NamingContext.java:153)
| at org.apache.naming.NamingContext.lookup(NamingContext.java:830)
| at org.apache.naming.NamingContext.lookup(NamingContext.java:153)
| at org.apache.naming.NamingContext.lookup(NamingContext.java:830)
答案 0 :(得分：0)
我终于解决了它。这是由于tomcat的类加载层次结构。 mq类由不同的类加载器加载，javax.jms类由不同的类加载器加载。