NoClassDefFoundError 无法初始化类 com.ibm.mq.headers.internal.HeaderType

Question

We have upgraded to IBM MQ8 and have following dependencies in our project. The following dependencies exists

com.ibm.disthub2.dhbcore
com.ibm.mq.jmqi
com.ibm.mqjms
ibm-jaxrpc-client
com.ibm.mq
com.ibm.mq.headers
com.ibm.mq.pcf
com.ibm.mq.commonservices

However while running the main program, it is giving NoDefFoundError , despite of providing the jars in the classpath.

Caused by: java.lang.NoClassDefFoundError: Could not initialize class com.ibm.mq.headers.internal.HeaderType
        at com.ibm.mq.headers.pcf.PCFMessage.<init>(PCFMessage.java:77) ~[com.ibm.mq.headers-7.5.0.6.jar:7.5.0.6 - p750-006-160226]
        at com.ibm.mq.headers.pcf.PCFMessage.<init>(PCFMessage.java:132) ~[com.ibm.mq.headers-7.5.0.6.jar:7.5.0.6 - p750-006-160226]
        at com.ibm.mq.ese.service.PolicyServiceImpl.policyFromPcf(PolicyServiceImpl.java:575) ~[com.ibm.mq.jmqi-7.5.0.6.jar:7.5.0.6 - p750-006-160226]
        at com.ibm.mq.ese.intercept.JmqiOpenInterceptorImpl.storeSecurityInfoInSmqiObject(JmqiOpenInterceptorImpl.java:359) ~[com.ibm.mq.jmqi-7.5.0.6.jar:7.5.0.6 - p750-006-160226]
        at com.ibm.mq.ese.intercept.JmqiOpenInterceptorImpl.readPolicyIfAvailable(JmqiOpenInterceptorImpl.java:321) ~[com.ibm.mq.jmqi-7.5.0.6.jar:7.5.0.6 - p750-006-160226]
        at com.ibm.mq.ese.intercept.JmqiOpenInterceptorImpl.afterSpiOpen(JmqiOpenInterceptorImpl.java:203) ~[com.ibm.mq.jmqi-7.5.0.6.jar:7.5.0.6 - p750-006-160226]
        at com.ibm.mq.ese.jmqi.InterceptedJmqiImpl.spiOpen(InterceptedJmqiImpl.java:411) ~[com.ibm.mq.jmqi-7.5.0.6.jar:7.5.0.6 - p750-006-160226]
        at com.ibm.mq.ese.jmqi.ESEJMQI.spiOpen(ESEJMQI.java:513) ~[com.ibm.mq.jmqi-7.5.0.6.jar:7.5.0.6 - p750-006-160226]
        at com.ibm.msg.client.wmq.internal.WMQMessageProducer$SpiIdentifiedProducerShadow.initialise(WMQMessageProducer.java:762) ~[com.ibm.mqjms-7.5.0.6.jar:7.5.0.6 - p750-006-160226]
        at com.ibm.msg.client.wmq.internal.WMQMessageProducer.<init>(WMQMessageProducer.java:995) ~[com.ibm.mqjms-7.5.0.6.jar:7.5.0.6 - p750-006-160226]
        at com.ibm.msg.client.wmq.internal.WMQSession.createProducer(WMQSession.java:889) ~[com.ibm.mqjms-7.5.0.6.jar:7.5.0.6 - p750-006-160226]
        at com.ibm.msg.client.jms.internal.JmsSessionImpl.createProducer(JmsSessionImpl.java:1232) ~[com.ibm.mqjms-7.5.0.6.jar:7.5.0.6 - p750-006-160226]
        at com.ibm.msg.client.jms.internal.JmsQueueSessionImpl.createSender(JmsQueueSessionImpl.java:136) ~[com.ibm.mqjms-7.5.0.6.jar:7.5.0.6 - p750-006-160226]
        at com.ibm.mq.jms.MQQueueSession.createSender(MQQueueSession.java:153) ~[com.ibm.mqjms-7.5.0.6.jar:7.5.0.6 - p750-006-160226]
        at com.ibm.mq.jms.MQQueueSession.createProducer(MQQueueSession.java:254) ~[com.ibm.mqjms-7.5.0.6.jar:7.5.0.6 - p750-006-160226]
        at org.springframework.jms.core.JmsTemplate.doCreateProducer(JmsTemplate.java:1114) ~[spring-jms-4.3.4.RELEASE.jar:4.3.4.RELEASE]
        at org.springframework.jms.core.JmsTemplate.createProducer(JmsTemplate.java:1095) ~[spring-jms-4.3.4.RELEASE.jar:4.3.4.RELEASE]
        at org.apache.camel.component.jms.JmsConfiguration$CamelJmsTemplate.doSendToDestination(JmsConfiguration.java:482) ~[camel-jms-2.17.0.jar:2.17.0]
        at org.apache.camel.component.jms.JmsConfiguration$CamelJmsTemplate.access$100(JmsConfiguration.java:428) ~[camel-jms-2.17.0.jar:2.17.0]
        at org.apache.camel.component.jms.JmsConfiguration$CamelJmsTemplate$1.doInJms(JmsConfiguration.java:442) ~[camel-jms-2.17.0.jar:2.17.0]
        at org.springframework.jms.core.JmsTemplate.execute(JmsTemplate.java:484) ~[spring-jms-4.3.4.RELEASE.jar:4.3.4.RELEASE]

Answer 1

1. Did you upgrade the MQ server to v8 or the MQ client to v8 or both?
2. Do they run on the same machine?
3. The stack trace shows all of the jar files have been renamed to include the string 7.5.0.6 which would indicate that they are from a MQ v7.5.0.6 MQ client install. IBM does not support moving the jar files from the standard installation location prior to v8.0.
4. At MQ v8.0 and later IBM provides a java only install that can be located anywhere.
5. At MQ v8.0 and later IBM also allows relocation of the files com.ibm.mq.allclient.jar and com.ibm.mq.traceControl.jar from a full client or server install to other servers and locations in the same enterprise, the above files contain all of the classes that were previously in separate jar files.

It would be recommended to remove all the jar files with 7.5.0.6 from the name and stick with the two jar files provided by IBM with MQ v8.0.

Per OP @IMahajan, the following components were upgraded: Spring, Camel, Java and all related jars including JMS.

Answer 2

Many thanks for your input. I found the resolution was version of the jar. I provided the higher version of com.ibm.mq.headers(containing HeaderType.Class)to V8 and provided it in the class path. It worked. I think mq8 is not compatible with v7.5.0.6. Please update if you feel different.