Question

我们有一个完全在staging中工作的应用程序，但是当我们在生产中部署它时，我们得到了MQ错误2495.我们在Tomcat 8.5中运行应用程序，并且我们使用相同的MQ库（8.0.0.6）。服务器操作系统是Windows。

从MQ读取消息的代码如下：

MQEnvironment.hostname = queueSettings.getServer();
        MQEnvironment.channel = queueSettings.getChannel();
        MQEnvironment.port = queueSettings.getPort();

        MQQueueManager queueManager = new MQQueueManager(queueSettings.getQueueManager());

        int openOptions = CMQC.MQCBDO_FAIL_IF_QUIESCING | CMQC.MQOO_INPUT_SHARED | CMQC.MQOO_BROWSE;

        MQQueue queue = queueManager.accessQueue(queueSettings.getQueue(), openOptions);

错误的完整堆栈跟踪如下所示：

com.ibm.mq.MQException: MQJE001: Completion Code '2', Reason '2495'.
at com.ibm.mq.MQSESSION.(MQSESSION.java:2063)
at com.ibm.mq.MQSESSION.getSession(MQSESSION.java:2103)
at com.ibm.mq.MQManagedConnectionJ11.(MQManagedConnectionJ11.java:207)
at com.ibm.mq.MQBindingsManagedConnectionFactoryJ11._createManagedConnection(MQBindingsManagedConnectionFactoryJ11.java:185)
at com.ibm.mq.MQBindingsManagedConnectionFactoryJ11.createManagedConnection(MQBindingsManagedConnectionFactoryJ11.java:230)
at com.ibm.mq.StoredManagedConnection.(StoredManagedConnection.java:96)
at com.ibm.mq.MQSimpleConnectionManager.allocateConnection(MQSimpleConnectionManager.java:194)
at com.ibm.mq.MQQueueManagerFactory.obtainBaseMQQueueManager(MQQueueManagerFactory.java:758)
at com.ibm.mq.MQQueueManagerFactory.procure(MQQueueManagerFactory.java:706)
at com.ibm.mq.MQQueueManagerFactory.constructQueueManager(MQQueueManagerFactory.java:670)
at com.ibm.mq.MQQueueManagerFactory.createQueueManager(MQQueueManagerFactory.java:145)
at com.ibm.mq.MQQueueManager.(MQQueueManager.java:675)
at com.atlascopco.cpq.connections.MQConnection.readMessagesFromQueue(MQConnection.java:92)
at com.atlascopco.cpq.tasks.ResponseHandlerTask.run(ResponseHandlerTask.java:43)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)
Caused by: com.ibm.mq.jmqi.JmqiException: CC=2;RC=2495;AMQ8568: The native JNI library 'mqjbnd64' was not found. For a client installation this is expected. [3=mqjbnd64]
at com.ibm.mq.jmqi.local.LocalMQ.loadLib(LocalMQ.java:1202)
at com.ibm.mq.jmqi.local.LocalMQ$1.run(LocalMQ.java:272)
at java.security.AccessController.doPrivileged(Native Method)
at com.ibm.mq.jmqi.local.LocalMQ.initialise_inner(LocalMQ.java:260)
at com.ibm.mq.jmqi.local.LocalMQ.initialise(LocalMQ.java:223)
at com.ibm.mq.jmqi.local.LocalMQ.(LocalMQ.java:1255)
at com.ibm.mq.jmqi.local.LocalServer.(LocalServer.java:219)
at sun.reflect.GeneratedConstructorAccessor10933.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.ibm.mq.jmqi.JmqiEnvironment.getInstance(JmqiEnvironment.java:656)
at com.ibm.mq.jmqi.JmqiEnvironment.getMQI(JmqiEnvironment.java:590)
at com.ibm.mq.MQSESSION.(MQSESSION.java:2056)
... 15 common frames omitted
Caused by: java.lang.UnsatisfiedLinkError: no mqjbnd64 in java.library.path
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at com.ibm.mq.jmqi.local.LocalMQ.loadLib(LocalMQ.java:1146)
... 27 common frames omitted

我如何找到问题？

Answer 1

问题出在您的堆栈跟踪中：

Caused by: com.ibm.mq.jmqi.JmqiException: CC=2;RC=2495;AMQ8568: The native JNI library 'mqjbnd64' was not found. For a client installation this is expected. [3=mqjbnd64]
Caused by: java.lang.UnsatisfiedLinkError: no mqjbnd64 in java.library.path

这在IBM MQ知识中心页面上有记录＆＃34; Configuring the Java Native Interface (JNI) libraries＆＃34;

在Windows上，库的默认位置如下：

MQ_INSTALLATION_PATH\java\lib (32-bit libraries)
MQ_INSTALLATION_PATH\java\lib64 (64-bit libraries)

您可以使用以下两种方式之一指定此库的位置（如果MQ安装在默认位置，则下面的示例都是针对64位JRE的，如果您运行的是32位JRE，请使用lib目录lib64目录）：

使用JVM参数，例如：
-Djava.library.path=C:\Program Files\IBM\MQ\java\lib64
通过OS环境变量。在Windows的情况下使用：
set PATH=C:\Program Files\IBM\MQ\java\lib64;%PATH%

连接到MQ管理器获取MQ错误2495

1 个答案: