在使用自动重新连接的 IBM MQ 客户端应用程序中检测重新连接
Detect reconnect in an IBM MQ client application that uses auto-reconnect
我正在使用配置了自动重新连接的 IBM MQ 类 for JMS（IBM MQ 版本 8.0.0.4）。根据文档，重新连接是隐式发生的。我想在重新连接时发出一个简单的日志语句。出于这个原因，当这种情况发生时，我需要以某种方式得到通知。
在第 Application Recovery 页的 IBM 文档中，我无意中看到了第 "Detecting failover" 节，它说：
Reconnection aware: Register an MQCBT_EVENT_HANDLER event handler with
the queue manager. The event handler is posted with MQRC_RECONNECTING
when the client starts to try to reconnect to the server, and
MQRC_RECONNECTED after a successful reconnection. You can then run a
routine to reestablish a predictable state so that the client
application is able to continue processing.
遗憾的是，我没有找到 Java/JMS 的代码示例来演示如何以及在何处注册此类事件处理程序。我不知道我的情况是否支持。任何人都可以为我提供正确的方向甚至提供代码示例吗？非常感谢。
2020 年 2 月 5 日的问题更新：
在收到 Sashi 2020 年 1 月 27 日的初步答复后，添加了我自己创建的以下代码示例。
public static void main(String[] args) {
Connection connection = null;
Session session = null;
Object destination = null;
MessageProducer producer = null;
try {
JmsFactoryFactory jmsFactoryFactory = JmsFactoryFactory.getInstance(WMQConstants.WMQ_PROVIDER);
JmsConnectionFactory cf = jmsFactoryFactory.createConnectionFactory();
cf.setStringProperty(WMQConstants.WMQ_HOST_NAME, HOST);
cf.setIntProperty(WMQConstants.WMQ_PORT, PORT);
cf.setStringProperty(WMQConstants.WMQ_CHANNEL, CHANNEL);
cf.setIntProperty(WMQConstants.WMQ_CONNECTION_MODE, WMQConstants.WMQ_CM_CLIENT);
cf.setStringProperty(WMQConstants.WMQ_QUEUE_MANAGER, QM_NAME);
cf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_OPTIONS, WMQConstants.WMQ_CLIENT_RECONNECT);
cf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_TIMEOUT, RECONNECT_TIMEOUT);
connection = cf.createConnection();
connection.setExceptionListener(new MQExceptionListener());
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
destination = session.createQueue(QUEUE);
producer = session.createProducer((Destination)destination);
connection.start();
} catch (JMSException ex) {
LOGGER.error(ex.toString());
}
}
public class MQExceptionListener implements ExceptionListener {
public void onException(JMSException e) {
System.out.println(e);
if(e.getLinkedException() != null)
System.out.println(e.getLinkedException());
}
}
这是我在日志中得到的：
ERROR [Main.main:57] (main) com.ibm.msg.client.jms.DetailedIllegalStateException: JMSWMQ0018: Failed to connect to queue manager '<hostname>' with connection mode 'Client' and host name '<hostname>(<port>)'.
Check the queue manager is started and if running in client mode, check there is a listener running. Please see the linked exception for more information.
ERROR [Main.main:61] (main) Inner exceptions:
ERROR [Main.main:65] (main) com.ibm.mq.MQException: JMSCMQ0001: IBM MQ call failed with compcode '2' ('MQCC_FAILED') reason '2538' ('MQRC_HOST_NOT_AVAILABLE').
ERROR [Main.main:65] (main) com.ibm.mq.jmqi.JmqiException: CC=2;RC=2538;AMQ9204: Connection to host '<hostname>(<port>)' rejected. [1=com.ibm.mq.jmqi.JmqiException[CC=2;RC=2538;AMQ9204: Connection to host '<hostname>/<ip>:<port>' rejected. [1=java.net.ConnectException[Connection refused: connect],3=<hostname>/<ip>:<port>,4=TCP,5=Socket.connect]],3=<hostname>(<port>),5=RemoteTCPConnection.bindAndConnectSocket]
ERROR [Main.main:65] (main) com.ibm.mq.jmqi.JmqiException: CC=2;RC=2538;AMQ9204: Connection to host '<hostname>/<ip>:<port>' rejected. [1=java.net.ConnectException[Connection refused: connect],3=<hostname>/<ip>:<port>,4=TCP,5=Socket.connect]
ERROR [Main.main:65] (main) java.net.ConnectException: Connection refused: connect
2020 年 2 月 11 日的问题更新：
我根据 Sashi 在 2020 年 2 月 5 日收到的反馈添加了这些内容。
我尝试构建一个连接到 IBM MQ 实例的最小应用程序。这是代码：
Application.java
public class Application {
private static final Logger LOGGER = LoggerFactory.getLogger(Application.class);
public static void main(String[] args) {
new Application().run();
}
private void run() {
MQWriter writer = new MQWriter();
int i = 1;
while (true) {
String message = "Hello Testing " + i;
LOGGER.info("Sending message {} to MQ server...", message);
writer.write(message);
i++;
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
MQConnectionDetails.java
public class MQConnectionDetails {
public static final String HOST = "XXX.XXX.XXX.XXX";
public static final int PORT = 1414;
public static final String QM_NAME = "QM1";
public static final String CHANNEL = "DEV.APP.SVRCONN";
public static final String QUEUE = "DEV.QUEUE.1";
public static final int RECONNECT_TIMEOUT = 60; // 1 minute
}
MQWriter.java
public class MQWriter {
private static final Logger LOGGER = LoggerFactory.getLogger(MQWriter.class);
private Connection connection = null;
private Session session = null;
private Object destination = null;
private MessageProducer producer = null;
public MQWriter() {
try {
JmsFactoryFactory jff = JmsFactoryFactory.getInstance(WMQConstants.WMQ_PROVIDER);
JmsConnectionFactory jcf = jff.createConnectionFactory();
jcf.setStringProperty(WMQConstants.WMQ_HOST_NAME, MQConnectionDetails.HOST);
jcf.setIntProperty(WMQConstants.WMQ_PORT, MQConnectionDetails.PORT);
jcf.setStringProperty(WMQConstants.WMQ_CHANNEL, MQConnectionDetails.CHANNEL);
jcf.setIntProperty(WMQConstants.WMQ_CONNECTION_MODE, WMQConstants.WMQ_CM_CLIENT);
jcf.setStringProperty(WMQConstants.WMQ_QUEUE_MANAGER, MQConnectionDetails.QM_NAME);
jcf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_OPTIONS, WMQConstants.WMQ_CLIENT_RECONNECT);
jcf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_TIMEOUT, MQConnectionDetails.RECONNECT_TIMEOUT);
LOGGER.info("Initializing connection to write queue {} on {}:{}...",
MQConnectionDetails.QUEUE,
MQConnectionDetails.HOST,
MQConnectionDetails.PORT);
connection = jcf.createConnection();
connection.setExceptionListener(new MQExceptionListener());
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
destination = session.createQueue(MQConnectionDetails.QUEUE);
producer = session.createProducer((Destination)destination);
connection.start();
} catch (JMSException ex) {
LOGGER.error("Error initializing connection to write queue", ex);
}
}
public void write(String message) {
try {
TextMessage textMessage = session.createTextMessage(message);
producer.send(textMessage);
} catch (Exception ex) {
LOGGER.error("Error sending message to write queue", ex);
}
}
}
MQExceptionListener.java
public class MQExceptionListener implements ExceptionListener {
private static final Logger LOGGER = LoggerFactory.getLogger(MQExceptionListener.class);
public void onException(JMSException ex) {
LOGGER.error("=====");
LOGGER.error(ex.toString());
if (ex.getLinkedException() != null) {
LOGGER.error(ex.getLinkedException().toString());
}
LOGGER.error("=====");
}
}
我运行的测试场景是这样的：
- 确保 IBM MQ 在 TCP 端口 1414 上可用（Amazon EC2 上的 IBM MQ Docker 容器 运行）。
- 运行 上面的应用程序 (Application.java) 并确保它向队列发送消息。
- 通过将端口从 1414 更改为 1415 来更改 Amazon EC2 安全组上的防火墙配置，这会使客户端无法使用 IBM MQ。
这是我观察到的：
- 仅在 90 秒不活动后，客户端才开始抛出异常。我不明白，因为我的RECONNECT_TIMEOUT设置为60秒，所以这里减去30秒。
- MQExceptionListener 仅调用一次（第一次）。
- 没有原因代码 2544(MQRC_RECONNECTING)，只有 2009(MQRC_CONNECTION_BROKEN) 存在。这是为什么？
以下是抛出的异常的摘要：
控制台异常：
2020-02-11 09:50:16,155 INFO [Application.run:21] (main) Sending message Hello Testing 13 to MQ server...
2020-02-11 09:50:17,285 INFO [Application.run:21] (main) Sending message Hello Testing 14 to MQ server...
2020-02-11 09:50:18,413 INFO [Application.run:21] (main) Sending message Hello Testing 15 to MQ server...
2020-02-11 09:50:19,555 INFO [Application.run:21] (main) Sending message Hello Testing 16 to MQ server...
2020-02-11 09:51:45,966 ERROR [MQExceptionListener.onException:14] (JMSCCThreadPoolWorker-6) =====
2020-02-11 09:51:45,966 ERROR [MQExceptionListener.onException:15] (JMSCCThreadPoolWorker-6) com.ibm.msg.client.jms.DetailedJMSException: JMSWMQ1107: A problem with this connection has occurred.
An error has occurred with the IBM MQ JMS connection.
Use the linked exception to determine the cause of this error.
2020-02-11 09:51:45,966 ERROR [MQExceptionListener.onException:17] (JMSCCThreadPoolWorker-6) com.ibm.mq.MQException: MQ delivered an asynchronous event with completion code '2', and reason '2009'.
2020-02-11 09:51:45,966 ERROR [MQExceptionListener.onException:19] (JMSCCThreadPoolWorker-6) =====
2020-02-11 09:51:45,967 ERROR [MQWriter.write:52] (main) Error sending message to write queue
com.ibm.msg.client.jms.DetailedJMSException: JMSWMQ2007: Failed to send a message to destination 'DEV.QUEUE.1'.
JMS attempted to perform an MQPUT or MQPUT1; however IBM MQ reported an error.
Use the linked exception to determine the cause of this error.
at com.ibm.msg.client.wmq.common.internal.Reason.reasonToException(Reason.java:595)
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:215)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1288)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1245)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.access0(WMQMessageProducer.java:76)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer$SpiIdentifiedProducerShadow.sendInternal(WMQMessageProducer.java:906)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer$ProducerShadow.send(WMQMessageProducer.java:566)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.send(WMQMessageProducer.java:1428)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.sendMessage(JmsMessageProducerImpl.java:855)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.synchronousSendInternal(JmsMessageProducerImpl.java:2055)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.sendInternal(JmsMessageProducerImpl.java:1993)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.send(JmsMessageProducerImpl.java:1486)
at com.ibm.mq.jms.MQMessageProducer.send(MQMessageProducer.java:293)
at org.example.MQWriter.write(MQWriter.java:50)
at org.example.Application.run(Application.java:22)
at org.example.Application.main(Application.java:13)
Caused by: com.ibm.mq.MQException: JMSCMQ0001: IBM MQ call failed with compcode '2' ('MQCC_FAILED') reason '2009' ('MQRC_CONNECTION_BROKEN').
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:203)
... 14 more
Caused by: com.ibm.mq.jmqi.JmqiException: CC=2;RC=2009
at com.ibm.mq.jmqi.remote.api.RemoteHconn$ReconnectionState.recordFailure(RemoteHconn.java:4931)
at com.ibm.mq.jmqi.remote.api.RemoteHconn.setReconnectionFailureInner(RemoteHconn.java:2650)
at com.ibm.mq.jmqi.remote.api.RemoteParentHconn.setReconnectionFailure(RemoteParentHconn.java:152)
at com.ibm.mq.jmqi.remote.impl.RemoteReconnectThread.bestHconn(RemoteReconnectThread.java:265)
at com.ibm.mq.jmqi.remote.impl.RemoteReconnectThread.run(RemoteReconnectThread.java:115)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueItem.runTask(WorkQueueItem.java:319)
at com.ibm.msg.client.commonservices.workqueue.SimpleWorkQueueItem.runItem(SimpleWorkQueueItem.java:99)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueItem.run(WorkQueueItem.java:343)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueManager.runWorkQueueItem(WorkQueueManager.java:312)
at com.ibm.msg.client.commonservices.j2se.workqueue.WorkQueueManagerImplementation$ThreadPoolWorker.run(WorkQueueManagerImplementation.java:1227)
2020-02-11 09:51:46,969 INFO [Application.run:21] (main) Sending message Hello Testing 17 to MQ server...
2020-02-11 09:51:46,972 ERROR [MQWriter.write:52] (main) Error sending message to write queue
com.ibm.msg.client.jms.DetailedJMSException: JMSWMQ2007: Failed to send a message to destination 'DEV.QUEUE.1'.
JMS attempted to perform an MQPUT or MQPUT1; however IBM MQ reported an error.
Use the linked exception to determine the cause of this error.
at com.ibm.msg.client.wmq.common.internal.Reason.reasonToException(Reason.java:595)
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:215)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1288)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1245)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.access0(WMQMessageProducer.java:76)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer$SpiIdentifiedProducerShadow.sendInternal(WMQMessageProducer.java:906)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer$ProducerShadow.send(WMQMessageProducer.java:566)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.send(WMQMessageProducer.java:1428)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.sendMessage(JmsMessageProducerImpl.java:855)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.synchronousSendInternal(JmsMessageProducerImpl.java:2055)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.sendInternal(JmsMessageProducerImpl.java:1993)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.send(JmsMessageProducerImpl.java:1486)
at com.ibm.mq.jms.MQMessageProducer.send(MQMessageProducer.java:293)
at org.example.MQWriter.write(MQWriter.java:50)
at org.example.Application.run(Application.java:22)
at org.example.Application.main(Application.java:13)
Caused by: com.ibm.mq.MQException: JMSCMQ0001: IBM MQ call failed with compcode '2' ('MQCC_FAILED') reason '2009' ('MQRC_CONNECTION_BROKEN').
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:203)
... 14 more
Caused by: com.ibm.mq.jmqi.JmqiException: CC=2;RC=2009
at com.ibm.mq.jmqi.remote.api.RemoteHconn$ReconnectionState.recordFailure(RemoteHconn.java:4931)
at com.ibm.mq.jmqi.remote.api.RemoteHconn.setReconnectionFailureInner(RemoteHconn.java:2650)
at com.ibm.mq.jmqi.remote.api.RemoteParentHconn.setReconnectionFailure(RemoteParentHconn.java:152)
at com.ibm.mq.jmqi.remote.impl.RemoteReconnectThread.bestHconn(RemoteReconnectThread.java:265)
at com.ibm.mq.jmqi.remote.impl.RemoteReconnectThread.run(RemoteReconnectThread.java:115)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueItem.runTask(WorkQueueItem.java:319)
at com.ibm.msg.client.commonservices.workqueue.SimpleWorkQueueItem.runItem(SimpleWorkQueueItem.java:99)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueItem.run(WorkQueueItem.java:343)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueManager.runWorkQueueItem(WorkQueueManager.java:312)
at com.ibm.msg.client.commonservices.j2se.workqueue.WorkQueueManagerImplementation$ThreadPoolWorker.run(WorkQueueManagerImplementation.java:1227)
2020 年 2 月 12 日的问题更新
根据 2020 年 2 月 11 日 JoshMc 的回答添加了此样本和调查结果。我对此样本的评论：
- 我现在正在使用 MQ* 类 并按照建议设置重新连接选项。
- 重新连接仍然没有发生
MQWriter2.java
public class MQWriter2 {
private static final Logger LOGGER = LoggerFactory.getLogger(MQWriter2.class);
private Connection connection = null;
private Session session = null;
private Queue destination = null;
private MessageProducer producer = null;
public MQWriter2() {
try {
MQConnectionFactory factory = new MQConnectionFactory();
factory.setTransportType(WMQConstants.WMQ_CM_CLIENT);
factory.setConnectionNameList("XXX.XXX.XXX.XXX(1414)");
factory.setQueueManager(MQConnectionDetails.QM_NAME);
factory.setChannel(MQConnectionDetails.CHANNEL);
factory.setClientReconnectOptions(WMQConstants.WMQ_CLIENT_RECONNECT);
factory.setClientReconnectTimeout(MQConnectionDetails.RECONNECT_TIMEOUT);
LOGGER.info("Initializing connection to write queue {} on {}:{}...",
MQConnectionDetails.QUEUE,
MQConnectionDetails.HOST,
MQConnectionDetails.PORT);
connection = factory.createConnection();
connection.setExceptionListener(new MQExceptionListener());
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
destination = session.createQueue(MQConnectionDetails.QUEUE);
producer = session.createProducer(destination);
connection.start();
} catch (JMSException ex) {
LOGGER.error("Error initializing connection to write queue", ex);
}
}
public void write(String message) {
try {
TextMessage textMessage = session.createTextMessage(message);
producer.send(textMessage);
} catch (Exception ex) {
LOGGER.error("Error sending message to write queue", ex);
}
}
}
控制台输出
2020-02-12 08:39:11,628 INFO [MQWriter2.<init>:29] (main) Initializing connection to write queue DEV.QUEUE.1 on 54.161.121.207:1414...
2020-02-12 08:39:14,552 INFO [Application.run:19] (main) Sending message Hello Testing 1 to MQ server...
2020-02-12 08:39:15,710 INFO [Application.run:19] (main) Sending message Hello Testing 2 to MQ server...
2020-02-12 08:39:16,841 INFO [Application.run:19] (main) Sending message Hello Testing 3 to MQ server...
...
2020-02-12 08:39:41,973 INFO [Application.run:19] (main) Sending message Hello Testing 25 to MQ server...
2020-02-12 08:41:27,314 ERROR [MQExceptionListener.onException:14] (JMSCCThreadPoolWorker-10) =====
2020-02-12 08:41:27,314 ERROR [MQExceptionListener.onException:15] (JMSCCThreadPoolWorker-10) com.ibm.msg.client.jms.DetailedJMSException: JMSWMQ1107: A problem with this connection has occurred.
An error has occurred with the IBM MQ JMS connection.
Use the linked exception to determine the cause of this error.
2020-02-12 08:41:27,314 ERROR [MQWriter2.write:49] (main) Error sending message to write queue
com.ibm.msg.client.jms.DetailedJMSException: JMSWMQ2007: Failed to send a message to destination 'DEV.QUEUE.1'.
JMS attempted to perform an MQPUT or MQPUT1; however IBM MQ reported an error.
Use the linked exception to determine the cause of this error.
at com.ibm.msg.client.wmq.common.internal.Reason.reasonToException(Reason.java:595)
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:215)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1288)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1245)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.access0(WMQMessageProducer.java:76)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer$SpiIdentifiedProducerShadow.sendInternal(WMQMessageProducer.java:906)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer$ProducerShadow.send(WMQMessageProducer.java:566)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.send(WMQMessageProducer.java:1428)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.sendMessage(JmsMessageProducerImpl.java:855)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.synchronousSendInternal(JmsMessageProducerImpl.java:2055)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.sendInternal(JmsMessageProducerImpl.java:1993)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.send(JmsMessageProducerImpl.java:1486)
at com.ibm.mq.jms.MQMessageProducer.send(MQMessageProducer.java:293)
at org.example.MQWriter2.write(MQWriter2.java:47)
at org.example.Application.run(Application.java:20)
at org.example.Application.main(Application.java:11)
Caused by: com.ibm.mq.MQException: JMSCMQ0001: IBM MQ call failed with compcode '2' ('MQCC_FAILED') reason '2009' ('MQRC_CONNECTION_BROKEN').
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:203)
... 14 more
Caused by: com.ibm.mq.jmqi.JmqiException: CC=2;RC=2009
at com.ibm.mq.jmqi.remote.api.RemoteHconn$ReconnectionState.recordFailure(RemoteHconn.java:4931)
at com.ibm.mq.jmqi.remote.api.RemoteHconn.setReconnectionFailureInner(RemoteHconn.java:2650)
at com.ibm.mq.jmqi.remote.api.RemoteParentHconn.setReconnectionFailure(RemoteParentHconn.java:152)
at com.ibm.mq.jmqi.remote.impl.RemoteReconnectThread.bestHconn(RemoteReconnectThread.java:265)
at com.ibm.mq.jmqi.remote.impl.RemoteReconnectThread.run(RemoteReconnectThread.java:115)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueItem.runTask(WorkQueueItem.java:319)
at com.ibm.msg.client.commonservices.workqueue.SimpleWorkQueueItem.runItem(SimpleWorkQueueItem.java:99)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueItem.run(WorkQueueItem.java:343)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueManager.runWorkQueueItem(WorkQueueManager.java:312)
at com.ibm.msg.client.commonservices.j2se.workqueue.WorkQueueManagerImplementation$ThreadPoolWorker.run(WorkQueueManagerImplementation.java:1227)
您可以在创建连接后在连接对象上设置一个ExceptionListener。尝试重新连接时，将调用 ExceptionListener 的 onException 方法。这是一个例子：
ExceptionListener exceptionListener = new ExceptionListener(){
@Override
public void onException(JMSException e) {
System.out.println(e);
if(e.getLinkedException() != null)
System.out.println(e.getLinkedException());
}
};
MQQueueConnection connection = (MQQueueConnection) cf.createQueueConnection();
connection.setExceptionListener(exceptionListener);
这里有几点可能会为您解决问题。
下一行设置 MQ 在发现连接丢失后尝试重新连接到队列管理器的时间。
jcf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_TIMEOUT, MQConnectionDetails.RECONNECT_TIMEOUT);
客户端注意到连接中断需要多长时间取决于失败的类型，但在您描述的情况下，它将基于 SVRCONN 通道的 HBINT 设置在队列管理器上。
当没有其他正常流量通过通道时，每 HBINT 秒发送一次心跳。通道的TIMEOUT是根据HBINT，如果HBINT小于60秒那么TIMEOUT是HBINT的两倍，如果HBINT是60秒或者更大，TIMEOUT 是 HBINT 加上 60 秒。超时基于最后一次发送流量或心跳，而不是当您更改防火墙配置时，尽管在这种情况下，您似乎每隔几秒发送一条消息，所以这应该已经关闭。
根据日志，我不确定它是否像我预期的那样选择了 RECONNECT 选项，当重新连接超时到期时，您会得到这些错误之一，而不是 MQRC_CONNECTION_BROKEN:
MQRC_RECONNECT_FAILEDMQRC_RECONNECT_TIMED_OUT
在我的样本中，我是这样设置的，也许可以试试这个，而不是你目前的设置方式：
jcf.setClientReconnectOptions(WMQConstants.WMQ_CLIENT_RECONNECT);
jcf.setClientReconnectTimeout(MQConnectionDetails.RECONNECT_TIMEOUT);
根据我所看到的，我猜你的 HBINT 在 SVRCONN 频道上设置为 45 秒，并且连接只是在 MQRC_CONNECTION_BROKEN 90 秒时超时并且从不尝试重新连接。
我遇到了与主题发起人相同的问题。在花了几个小时筛选互联网上可用的信息、与同事交谈并试图让重新连接正常工作后，我放弃了，并决定通过模拟难以理解的重新连接功能来解决这个问题。我希望它能帮助其他在 IBM MQ 上苦苦挣扎的人。我写的 class 基本上做了两件事：
- 反复尝试连接到 IBM MQ，尝试之间的间隔不断增加。
- 连接后，设置一个错误处理程序，当连接出现问题时由 IBM MQ 触发（使用相同的逻辑重新连接）。
首先，这是 class 本身：
package com.raiks.mqclient;
import javax.jms.Destination;
import javax.jms.JMSConsumer;
import javax.jms.JMSContext;
import javax.jms.JMSException;
import com.ibm.msg.client.jms.JmsConnectionFactory;
import com.ibm.msg.client.wmq.WMQConstants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.raiks.mqclient.IbmMqMessageListener;
/**
* This class implements the reconnection logic for JMS brokers that don't support it
* In particular, it does it for IBM MQ with its incomprehensible reconnection algorithm
* It's expected that each connection manager receives a separate connection factory
* and a message listener - it's not guaranteed for those to be thread safe
*/
public final class IbmMqJmsConnectionManager {
private static final Logger LOGGER = LoggerFactory.getLogger(IbmMqJmsConnectionManager.class);
private static final int INITIAL_RECONNECTION_DELAY_MS = 6000;
private static final int MAX_RECONNECTION_DELAY_MS = 60000;
private static final String QUEUE_PREIX = "queue:///";
private final String connectorName;
private final JmsConnectionFactory connectionFactory;
private final String queueName;
private final IbmMqMessageListener messageListener;
private final int initialReconnectionDelayMs;
private final int maxReconnectionDelayMs;
public IbmMqJmsConnectionManager(
String connectorName,
JmsConnectionFactory connectionFactory,
String queueName,
IbmMqMessageListener messageListener,
int initialReconnectionDelayMs,
int maxReconnectionDelayMs
) {
this.connectorName = connectorName;
this.connectionFactory = connectionFactory;
this.queueName = queueName;
this.messageListener = messageListener;
this.initialReconnectionDelayMs = initialReconnectionDelayMs;
this.maxReconnectionDelayMs = maxReconnectionDelayMs;
}
/**
* Attempts to connect to a JMS broker and makes continuous retries with an increasing interval if fails
* When the maximum interval is reached, issues an error and keeps on trying
* Sets the exception listener (a callback) in the created JMSContext which calls this method when the
* connection with the broker goes down due to network issue or intentional connection termination
*/
public void connectToBrokerWithRetries() {
String connectionDetails = formatConnectionDetails();
LOGGER.info("Attempting to connect to JMS broker '{}'. Connection details = {}", connectorName, connectionDetails);
JMSContext context = null;
int sleepingTimeMs = INITIAL_RECONNECTION_DELAY_MS;
int accumulatedSleepingTimeMs = 0;
// Try to reconnect until we succeed. IMPORTANT! This is a blocking loop that never ends so it must be run in a separate thread
while (context == null) {
try {
context = connectionFactory.createContext(JMSContext.AUTO_ACKNOWLEDGE);
LOGGER.info("Successfully connected to the JMS broker '{}'. Connection details = {}", connectorName, connectionDetails);
boolean hadUnsuccessfulConnectionAttempts = accumulatedSleepingTimeMs > 0;
if (hadUnsuccessfulConnectionAttempts) {
LOGGER.warn(
"Before this successful attempt, I spent {} ms repeatedly trying to connect to '{}'. Please check the broker's health. Connection details = {}",
accumulatedSleepingTimeMs, connectorName, connectionDetails
);
}
Destination destination = context.createQueue(QUEUE_PREIX + queueName);
JMSConsumer jmsConsumer = context.createConsumer(destination);
jmsConsumer.setMessageListener(messageListener);
LOGGER.info("Successfully connected to the queue '{}' at '{}'. Connection details = {}", queueName, connectorName, connectionDetails);
// Sets a callback that will be invoked when something happens with a connection to a broker
context.setExceptionListener(
jmsException -> {
LOGGER.warn("Something bad happened to JMS broker connection to '{}'. I will try to reconnect. Connection details = {}", connectorName, connectionDetails);
connectToBrokerWithRetries();
}
);
} catch (Exception e) {
LOGGER.warn(
"Failed to create a JMS context for '{}'. I will wait for {} ms and then make a reconnection attempt. Connection details = {}",
connectorName, sleepingTimeMs, connectionDetails, e
);
context = null;
try {
Thread.sleep(sleepingTimeMs);
accumulatedSleepingTimeMs += sleepingTimeMs;
int doubledSleepingTime = sleepingTimeMs * 2;
// We double the sleeping time on each subsequent attempt until we hit the limit
// Then we just keep on reconnecting forever using the limit value
boolean nextReconnectionDelayWillExceedMaxDelay = doubledSleepingTime >= MAX_RECONNECTION_DELAY_MS;
if (nextReconnectionDelayWillExceedMaxDelay) {
sleepingTimeMs = MAX_RECONNECTION_DELAY_MS;
LOGGER.error(
"Repeatedly failed to create a JMS context for {} ms. I will keep on trying every {} ms but please check the broker availability. Connection details = {}",
accumulatedSleepingTimeMs, sleepingTimeMs, connectionDetails
);
} else {
sleepingTimeMs = doubledSleepingTime;
}
} catch (InterruptedException ex) {
throw new RuntimeException(ex);
}
}
}
}
private String formatConnectionDetails() {
String connectionDetails = "[]";
try {
connectionDetails = String.format(
"[ host = %s, port = %d, queueManager = %s, channel = %s, user = %s ]",
connectionFactory.getStringProperty(WMQConstants.WMQ_HOST_NAME),
connectionFactory.getIntProperty(WMQConstants.WMQ_PORT),
connectionFactory.getStringProperty(WMQConstants.WMQ_QUEUE_MANAGER),
connectionFactory.getStringProperty(WMQConstants.WMQ_CHANNEL),
connectionFactory.getStringProperty(WMQConstants.USERID)
);
} catch (Exception e) {
LOGGER.warn("Failed to get the connection details. This is not critical, but the details will be unavailable");
}
return connectionDetails;
}
}
下面是您的使用方法：
LOGGER.info("Starting the initial connection thread");
Thread cftInitialConnectionThread = new Thread(cftConnectionManager::connectToBrokerWithRetries);
cftInitialConnectionThread.start();
检查这段代码，因为我正在使用 IBM WMQ 9.2.3，在 CentOS 8 上使用带有 Pacemaker 的 3 节点 IBM WMQ 多实例。
package com.ibm.mq.samples.jms;
import javax.jms.Destination;
import javax.jms.JMSConsumer;
import javax.jms.JMSContext;
import javax.jms.JMSException;
import javax.jms.JMSProducer;
import javax.jms.TextMessage;
import com.ibm.msg.client.jms.JmsConnectionFactory;
import com.ibm.msg.client.jms.JmsFactoryFactory;
import com.ibm.msg.client.wmq.WMQConstants;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
public class JmsPutGet {
// System exit status value (assume unset value to be 1)
private static int status = 1;
// Create variables for the connection to MQ
private static final String HOST = "192.168.49.140"; // Host name or IP address
private static final int PORT = 10200; // Listener port for your queue manager
private static final String CHANNEL = "CHANNEL1"; // Channel name
private static final String QMGR = "HAQM1"; // Queue manager name
private static final String APP_USER = ""; // User name that application uses to connect to MQ
private static final String APP_PASSWORD = ""; // Password that the application uses to connect to MQ
private static final String QUEUE_NAME = "SOURCE"; // Queue that the application uses to put and get messages to and from
private static final int RECONNECT_TIMEOUT = 60; // 1 minute
private static JMSContext context = null;
private static Destination destination = null;
public static void main(String[] args) {
// Variables
JMSProducer producer = null;
JMSConsumer consumer = null;
LocalDateTime now = null;
try {
setupResources();
long uniqueNumber = System.currentTimeMillis() % 1000;
TextMessage message = context.createTextMessage("Your lucky number today is " + uniqueNumber);
DateTimeFormatter dtf = DateTimeFormatter.ofPattern("uuuu/MM/dd HH:mm:ss");
for(int i=0; i>=0; i++){
producer = context.createProducer();
producer.send(destination, message);
//System.out.println("Sent message:\n " + i + " " + message);
System.out.println("\nMensaje enviado:\n " + i );
now = LocalDateTime.now();
System.out.println(dtf.format(now));
consumer = context.createConsumer(destination); // autoclosable
String receivedMessage = consumer.receiveBody(String.class, 15000); // in ms or 15 seconds
//System.out.println("\nReceived message:\n " + i + " " + receivedMessage);
System.out.println("\nMensaje recibido:\n " + i );
now = LocalDateTime.now();
System.out.println(dtf.format(now));
Thread.sleep(1000);
}
context.close();
recordSuccess();
} catch (Exception ex) {
recordFailure(ex);
System.out.println("DETECTING ERROR... RECONNECTING");
setupResources();
}
} // end main()
private static void setupResources() {
boolean connected = false;
while (!connected) {
try {
// Create a connection factory
JmsFactoryFactory ff = JmsFactoryFactory.getInstance(WMQConstants.WMQ_PROVIDER);
JmsConnectionFactory cf = ff.createConnectionFactory();
// Set the properties
cf.setStringProperty(WMQConstants.WMQ_HOST_NAME, HOST);
cf.setIntProperty(WMQConstants.WMQ_PORT, PORT);
//cf.setStringProperty(WMQConstants.WMQ_CONNECTION_NAME_LIST, "192.168.49.140(10200),192.168.49.131(10200),192.168.49.132(10200)");
cf.setStringProperty(WMQConstants.WMQ_CHANNEL, CHANNEL);
cf.setIntProperty(WMQConstants.WMQ_CONNECTION_MODE, WMQConstants.WMQ_CM_CLIENT);
cf.setStringProperty(WMQConstants.WMQ_QUEUE_MANAGER, QMGR);
cf.setStringProperty(WMQConstants.WMQ_APPLICATIONNAME, "JmsPutGet (JMS)");
cf.setBooleanProperty(WMQConstants.USER_AUTHENTICATION_MQCSP, true);
cf.setStringProperty(WMQConstants.USERID, APP_USER);
cf.setStringProperty(WMQConstants.PASSWORD, APP_PASSWORD);
cf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_TIMEOUT, RECONNECT_TIMEOUT);
cf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_OPTIONS, WMQConstants.WMQ_CLIENT_RECONNECT);
//cf.setStringProperty(WMQConstants.WMQ_SSL_CIPHER_SUITE, "*TLS12");
// Create JMS objects
context = cf.createContext();
destination = context.createQueue("queue:///" + QUEUE_NAME);
// no exception? then we connected ok
connected = true;
System.out.println("CONNECTED");
}
catch (JMSException je) {
// sleep and then have another attempt
System.out.println("RECONNECTING");
try {Thread.sleep(30*1000);} catch (InterruptedException ie) {}
}
}
}
private static void recordSuccess() {
System.out.println("SUCCESS");
status = 0;
return;
}
private static void recordFailure(Exception ex) {
if (ex != null) {
if (ex instanceof JMSException) {
processJMSException((JMSException) ex);
} else {
System.out.println(ex);
}
}
System.out.println("FAILURE");
status = -1;
return;
}
private static void processJMSException(JMSException jmsex) {
System.out.println(jmsex);
Throwable innerException = jmsex.getLinkedException();
if (innerException != null) {
System.out.println("Inner exception(s):");
}
while (innerException != null) {
System.out.println(innerException);
innerException = innerException.getCause();
}
return;
}
}
我在 github 中添加了一个 link 以供参考 https://github.com/fintecheando/IBMMQSample
我正在使用配置了自动重新连接的 IBM MQ 类 for JMS（IBM MQ 版本 8.0.0.4）。根据文档，重新连接是隐式发生的。我想在重新连接时发出一个简单的日志语句。出于这个原因，当这种情况发生时，我需要以某种方式得到通知。
在第 Application Recovery 页的 IBM 文档中，我无意中看到了第 "Detecting failover" 节，它说：
Reconnection aware: Register an MQCBT_EVENT_HANDLER event handler with the queue manager. The event handler is posted with MQRC_RECONNECTING when the client starts to try to reconnect to the server, and MQRC_RECONNECTED after a successful reconnection. You can then run a routine to reestablish a predictable state so that the client application is able to continue processing.
遗憾的是，我没有找到 Java/JMS 的代码示例来演示如何以及在何处注册此类事件处理程序。我不知道我的情况是否支持。任何人都可以为我提供正确的方向甚至提供代码示例吗？非常感谢。
2020 年 2 月 5 日的问题更新：
在收到 Sashi 2020 年 1 月 27 日的初步答复后，添加了我自己创建的以下代码示例。
public static void main(String[] args) {
Connection connection = null;
Session session = null;
Object destination = null;
MessageProducer producer = null;
try {
JmsFactoryFactory jmsFactoryFactory = JmsFactoryFactory.getInstance(WMQConstants.WMQ_PROVIDER);
JmsConnectionFactory cf = jmsFactoryFactory.createConnectionFactory();
cf.setStringProperty(WMQConstants.WMQ_HOST_NAME, HOST);
cf.setIntProperty(WMQConstants.WMQ_PORT, PORT);
cf.setStringProperty(WMQConstants.WMQ_CHANNEL, CHANNEL);
cf.setIntProperty(WMQConstants.WMQ_CONNECTION_MODE, WMQConstants.WMQ_CM_CLIENT);
cf.setStringProperty(WMQConstants.WMQ_QUEUE_MANAGER, QM_NAME);
cf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_OPTIONS, WMQConstants.WMQ_CLIENT_RECONNECT);
cf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_TIMEOUT, RECONNECT_TIMEOUT);
connection = cf.createConnection();
connection.setExceptionListener(new MQExceptionListener());
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
destination = session.createQueue(QUEUE);
producer = session.createProducer((Destination)destination);
connection.start();
} catch (JMSException ex) {
LOGGER.error(ex.toString());
}
}
public class MQExceptionListener implements ExceptionListener {
public void onException(JMSException e) {
System.out.println(e);
if(e.getLinkedException() != null)
System.out.println(e.getLinkedException());
}
}
这是我在日志中得到的：
ERROR [Main.main:57] (main) com.ibm.msg.client.jms.DetailedIllegalStateException: JMSWMQ0018: Failed to connect to queue manager '<hostname>' with connection mode 'Client' and host name '<hostname>(<port>)'.
Check the queue manager is started and if running in client mode, check there is a listener running. Please see the linked exception for more information.
ERROR [Main.main:61] (main) Inner exceptions:
ERROR [Main.main:65] (main) com.ibm.mq.MQException: JMSCMQ0001: IBM MQ call failed with compcode '2' ('MQCC_FAILED') reason '2538' ('MQRC_HOST_NOT_AVAILABLE').
ERROR [Main.main:65] (main) com.ibm.mq.jmqi.JmqiException: CC=2;RC=2538;AMQ9204: Connection to host '<hostname>(<port>)' rejected. [1=com.ibm.mq.jmqi.JmqiException[CC=2;RC=2538;AMQ9204: Connection to host '<hostname>/<ip>:<port>' rejected. [1=java.net.ConnectException[Connection refused: connect],3=<hostname>/<ip>:<port>,4=TCP,5=Socket.connect]],3=<hostname>(<port>),5=RemoteTCPConnection.bindAndConnectSocket]
ERROR [Main.main:65] (main) com.ibm.mq.jmqi.JmqiException: CC=2;RC=2538;AMQ9204: Connection to host '<hostname>/<ip>:<port>' rejected. [1=java.net.ConnectException[Connection refused: connect],3=<hostname>/<ip>:<port>,4=TCP,5=Socket.connect]
ERROR [Main.main:65] (main) java.net.ConnectException: Connection refused: connect
2020 年 2 月 11 日的问题更新：
我根据 Sashi 在 2020 年 2 月 5 日收到的反馈添加了这些内容。
我尝试构建一个连接到 IBM MQ 实例的最小应用程序。这是代码：
Application.java
public class Application {
private static final Logger LOGGER = LoggerFactory.getLogger(Application.class);
public static void main(String[] args) {
new Application().run();
}
private void run() {
MQWriter writer = new MQWriter();
int i = 1;
while (true) {
String message = "Hello Testing " + i;
LOGGER.info("Sending message {} to MQ server...", message);
writer.write(message);
i++;
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
MQConnectionDetails.java
public class MQConnectionDetails {
public static final String HOST = "XXX.XXX.XXX.XXX";
public static final int PORT = 1414;
public static final String QM_NAME = "QM1";
public static final String CHANNEL = "DEV.APP.SVRCONN";
public static final String QUEUE = "DEV.QUEUE.1";
public static final int RECONNECT_TIMEOUT = 60; // 1 minute
}
MQWriter.java
public class MQWriter {
private static final Logger LOGGER = LoggerFactory.getLogger(MQWriter.class);
private Connection connection = null;
private Session session = null;
private Object destination = null;
private MessageProducer producer = null;
public MQWriter() {
try {
JmsFactoryFactory jff = JmsFactoryFactory.getInstance(WMQConstants.WMQ_PROVIDER);
JmsConnectionFactory jcf = jff.createConnectionFactory();
jcf.setStringProperty(WMQConstants.WMQ_HOST_NAME, MQConnectionDetails.HOST);
jcf.setIntProperty(WMQConstants.WMQ_PORT, MQConnectionDetails.PORT);
jcf.setStringProperty(WMQConstants.WMQ_CHANNEL, MQConnectionDetails.CHANNEL);
jcf.setIntProperty(WMQConstants.WMQ_CONNECTION_MODE, WMQConstants.WMQ_CM_CLIENT);
jcf.setStringProperty(WMQConstants.WMQ_QUEUE_MANAGER, MQConnectionDetails.QM_NAME);
jcf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_OPTIONS, WMQConstants.WMQ_CLIENT_RECONNECT);
jcf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_TIMEOUT, MQConnectionDetails.RECONNECT_TIMEOUT);
LOGGER.info("Initializing connection to write queue {} on {}:{}...",
MQConnectionDetails.QUEUE,
MQConnectionDetails.HOST,
MQConnectionDetails.PORT);
connection = jcf.createConnection();
connection.setExceptionListener(new MQExceptionListener());
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
destination = session.createQueue(MQConnectionDetails.QUEUE);
producer = session.createProducer((Destination)destination);
connection.start();
} catch (JMSException ex) {
LOGGER.error("Error initializing connection to write queue", ex);
}
}
public void write(String message) {
try {
TextMessage textMessage = session.createTextMessage(message);
producer.send(textMessage);
} catch (Exception ex) {
LOGGER.error("Error sending message to write queue", ex);
}
}
}
MQExceptionListener.java
public class MQExceptionListener implements ExceptionListener {
private static final Logger LOGGER = LoggerFactory.getLogger(MQExceptionListener.class);
public void onException(JMSException ex) {
LOGGER.error("=====");
LOGGER.error(ex.toString());
if (ex.getLinkedException() != null) {
LOGGER.error(ex.getLinkedException().toString());
}
LOGGER.error("=====");
}
}
我运行的测试场景是这样的：
- 确保 IBM MQ 在 TCP 端口 1414 上可用（Amazon EC2 上的 IBM MQ Docker 容器 运行）。
- 运行 上面的应用程序 (Application.java) 并确保它向队列发送消息。
- 通过将端口从 1414 更改为 1415 来更改 Amazon EC2 安全组上的防火墙配置，这会使客户端无法使用 IBM MQ。
这是我观察到的：
- 仅在 90 秒不活动后，客户端才开始抛出异常。我不明白，因为我的RECONNECT_TIMEOUT设置为60秒，所以这里减去30秒。
- MQExceptionListener 仅调用一次（第一次）。
- 没有原因代码 2544(MQRC_RECONNECTING)，只有 2009(MQRC_CONNECTION_BROKEN) 存在。这是为什么？
以下是抛出的异常的摘要：
控制台异常：
2020-02-11 09:50:16,155 INFO [Application.run:21] (main) Sending message Hello Testing 13 to MQ server...
2020-02-11 09:50:17,285 INFO [Application.run:21] (main) Sending message Hello Testing 14 to MQ server...
2020-02-11 09:50:18,413 INFO [Application.run:21] (main) Sending message Hello Testing 15 to MQ server...
2020-02-11 09:50:19,555 INFO [Application.run:21] (main) Sending message Hello Testing 16 to MQ server...
2020-02-11 09:51:45,966 ERROR [MQExceptionListener.onException:14] (JMSCCThreadPoolWorker-6) =====
2020-02-11 09:51:45,966 ERROR [MQExceptionListener.onException:15] (JMSCCThreadPoolWorker-6) com.ibm.msg.client.jms.DetailedJMSException: JMSWMQ1107: A problem with this connection has occurred.
An error has occurred with the IBM MQ JMS connection.
Use the linked exception to determine the cause of this error.
2020-02-11 09:51:45,966 ERROR [MQExceptionListener.onException:17] (JMSCCThreadPoolWorker-6) com.ibm.mq.MQException: MQ delivered an asynchronous event with completion code '2', and reason '2009'.
2020-02-11 09:51:45,966 ERROR [MQExceptionListener.onException:19] (JMSCCThreadPoolWorker-6) =====
2020-02-11 09:51:45,967 ERROR [MQWriter.write:52] (main) Error sending message to write queue
com.ibm.msg.client.jms.DetailedJMSException: JMSWMQ2007: Failed to send a message to destination 'DEV.QUEUE.1'.
JMS attempted to perform an MQPUT or MQPUT1; however IBM MQ reported an error.
Use the linked exception to determine the cause of this error.
at com.ibm.msg.client.wmq.common.internal.Reason.reasonToException(Reason.java:595)
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:215)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1288)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1245)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.access0(WMQMessageProducer.java:76)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer$SpiIdentifiedProducerShadow.sendInternal(WMQMessageProducer.java:906)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer$ProducerShadow.send(WMQMessageProducer.java:566)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.send(WMQMessageProducer.java:1428)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.sendMessage(JmsMessageProducerImpl.java:855)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.synchronousSendInternal(JmsMessageProducerImpl.java:2055)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.sendInternal(JmsMessageProducerImpl.java:1993)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.send(JmsMessageProducerImpl.java:1486)
at com.ibm.mq.jms.MQMessageProducer.send(MQMessageProducer.java:293)
at org.example.MQWriter.write(MQWriter.java:50)
at org.example.Application.run(Application.java:22)
at org.example.Application.main(Application.java:13)
Caused by: com.ibm.mq.MQException: JMSCMQ0001: IBM MQ call failed with compcode '2' ('MQCC_FAILED') reason '2009' ('MQRC_CONNECTION_BROKEN').
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:203)
... 14 more
Caused by: com.ibm.mq.jmqi.JmqiException: CC=2;RC=2009
at com.ibm.mq.jmqi.remote.api.RemoteHconn$ReconnectionState.recordFailure(RemoteHconn.java:4931)
at com.ibm.mq.jmqi.remote.api.RemoteHconn.setReconnectionFailureInner(RemoteHconn.java:2650)
at com.ibm.mq.jmqi.remote.api.RemoteParentHconn.setReconnectionFailure(RemoteParentHconn.java:152)
at com.ibm.mq.jmqi.remote.impl.RemoteReconnectThread.bestHconn(RemoteReconnectThread.java:265)
at com.ibm.mq.jmqi.remote.impl.RemoteReconnectThread.run(RemoteReconnectThread.java:115)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueItem.runTask(WorkQueueItem.java:319)
at com.ibm.msg.client.commonservices.workqueue.SimpleWorkQueueItem.runItem(SimpleWorkQueueItem.java:99)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueItem.run(WorkQueueItem.java:343)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueManager.runWorkQueueItem(WorkQueueManager.java:312)
at com.ibm.msg.client.commonservices.j2se.workqueue.WorkQueueManagerImplementation$ThreadPoolWorker.run(WorkQueueManagerImplementation.java:1227)
2020-02-11 09:51:46,969 INFO [Application.run:21] (main) Sending message Hello Testing 17 to MQ server...
2020-02-11 09:51:46,972 ERROR [MQWriter.write:52] (main) Error sending message to write queue
com.ibm.msg.client.jms.DetailedJMSException: JMSWMQ2007: Failed to send a message to destination 'DEV.QUEUE.1'.
JMS attempted to perform an MQPUT or MQPUT1; however IBM MQ reported an error.
Use the linked exception to determine the cause of this error.
at com.ibm.msg.client.wmq.common.internal.Reason.reasonToException(Reason.java:595)
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:215)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1288)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1245)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.access0(WMQMessageProducer.java:76)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer$SpiIdentifiedProducerShadow.sendInternal(WMQMessageProducer.java:906)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer$ProducerShadow.send(WMQMessageProducer.java:566)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.send(WMQMessageProducer.java:1428)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.sendMessage(JmsMessageProducerImpl.java:855)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.synchronousSendInternal(JmsMessageProducerImpl.java:2055)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.sendInternal(JmsMessageProducerImpl.java:1993)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.send(JmsMessageProducerImpl.java:1486)
at com.ibm.mq.jms.MQMessageProducer.send(MQMessageProducer.java:293)
at org.example.MQWriter.write(MQWriter.java:50)
at org.example.Application.run(Application.java:22)
at org.example.Application.main(Application.java:13)
Caused by: com.ibm.mq.MQException: JMSCMQ0001: IBM MQ call failed with compcode '2' ('MQCC_FAILED') reason '2009' ('MQRC_CONNECTION_BROKEN').
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:203)
... 14 more
Caused by: com.ibm.mq.jmqi.JmqiException: CC=2;RC=2009
at com.ibm.mq.jmqi.remote.api.RemoteHconn$ReconnectionState.recordFailure(RemoteHconn.java:4931)
at com.ibm.mq.jmqi.remote.api.RemoteHconn.setReconnectionFailureInner(RemoteHconn.java:2650)
at com.ibm.mq.jmqi.remote.api.RemoteParentHconn.setReconnectionFailure(RemoteParentHconn.java:152)
at com.ibm.mq.jmqi.remote.impl.RemoteReconnectThread.bestHconn(RemoteReconnectThread.java:265)
at com.ibm.mq.jmqi.remote.impl.RemoteReconnectThread.run(RemoteReconnectThread.java:115)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueItem.runTask(WorkQueueItem.java:319)
at com.ibm.msg.client.commonservices.workqueue.SimpleWorkQueueItem.runItem(SimpleWorkQueueItem.java:99)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueItem.run(WorkQueueItem.java:343)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueManager.runWorkQueueItem(WorkQueueManager.java:312)
at com.ibm.msg.client.commonservices.j2se.workqueue.WorkQueueManagerImplementation$ThreadPoolWorker.run(WorkQueueManagerImplementation.java:1227)
2020 年 2 月 12 日的问题更新
根据 2020 年 2 月 11 日 JoshMc 的回答添加了此样本和调查结果。我对此样本的评论：
- 我现在正在使用 MQ* 类 并按照建议设置重新连接选项。
- 重新连接仍然没有发生
MQWriter2.java
public class MQWriter2 {
private static final Logger LOGGER = LoggerFactory.getLogger(MQWriter2.class);
private Connection connection = null;
private Session session = null;
private Queue destination = null;
private MessageProducer producer = null;
public MQWriter2() {
try {
MQConnectionFactory factory = new MQConnectionFactory();
factory.setTransportType(WMQConstants.WMQ_CM_CLIENT);
factory.setConnectionNameList("XXX.XXX.XXX.XXX(1414)");
factory.setQueueManager(MQConnectionDetails.QM_NAME);
factory.setChannel(MQConnectionDetails.CHANNEL);
factory.setClientReconnectOptions(WMQConstants.WMQ_CLIENT_RECONNECT);
factory.setClientReconnectTimeout(MQConnectionDetails.RECONNECT_TIMEOUT);
LOGGER.info("Initializing connection to write queue {} on {}:{}...",
MQConnectionDetails.QUEUE,
MQConnectionDetails.HOST,
MQConnectionDetails.PORT);
connection = factory.createConnection();
connection.setExceptionListener(new MQExceptionListener());
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
destination = session.createQueue(MQConnectionDetails.QUEUE);
producer = session.createProducer(destination);
connection.start();
} catch (JMSException ex) {
LOGGER.error("Error initializing connection to write queue", ex);
}
}
public void write(String message) {
try {
TextMessage textMessage = session.createTextMessage(message);
producer.send(textMessage);
} catch (Exception ex) {
LOGGER.error("Error sending message to write queue", ex);
}
}
}
控制台输出
2020-02-12 08:39:11,628 INFO [MQWriter2.<init>:29] (main) Initializing connection to write queue DEV.QUEUE.1 on 54.161.121.207:1414...
2020-02-12 08:39:14,552 INFO [Application.run:19] (main) Sending message Hello Testing 1 to MQ server...
2020-02-12 08:39:15,710 INFO [Application.run:19] (main) Sending message Hello Testing 2 to MQ server...
2020-02-12 08:39:16,841 INFO [Application.run:19] (main) Sending message Hello Testing 3 to MQ server...
...
2020-02-12 08:39:41,973 INFO [Application.run:19] (main) Sending message Hello Testing 25 to MQ server...
2020-02-12 08:41:27,314 ERROR [MQExceptionListener.onException:14] (JMSCCThreadPoolWorker-10) =====
2020-02-12 08:41:27,314 ERROR [MQExceptionListener.onException:15] (JMSCCThreadPoolWorker-10) com.ibm.msg.client.jms.DetailedJMSException: JMSWMQ1107: A problem with this connection has occurred.
An error has occurred with the IBM MQ JMS connection.
Use the linked exception to determine the cause of this error.
2020-02-12 08:41:27,314 ERROR [MQWriter2.write:49] (main) Error sending message to write queue
com.ibm.msg.client.jms.DetailedJMSException: JMSWMQ2007: Failed to send a message to destination 'DEV.QUEUE.1'.
JMS attempted to perform an MQPUT or MQPUT1; however IBM MQ reported an error.
Use the linked exception to determine the cause of this error.
at com.ibm.msg.client.wmq.common.internal.Reason.reasonToException(Reason.java:595)
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:215)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1288)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.checkJmqiCallSuccess(WMQMessageProducer.java:1245)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.access0(WMQMessageProducer.java:76)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer$SpiIdentifiedProducerShadow.sendInternal(WMQMessageProducer.java:906)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer$ProducerShadow.send(WMQMessageProducer.java:566)
at com.ibm.msg.client.wmq.internal.WMQMessageProducer.send(WMQMessageProducer.java:1428)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.sendMessage(JmsMessageProducerImpl.java:855)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.synchronousSendInternal(JmsMessageProducerImpl.java:2055)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.sendInternal(JmsMessageProducerImpl.java:1993)
at com.ibm.msg.client.jms.internal.JmsMessageProducerImpl.send(JmsMessageProducerImpl.java:1486)
at com.ibm.mq.jms.MQMessageProducer.send(MQMessageProducer.java:293)
at org.example.MQWriter2.write(MQWriter2.java:47)
at org.example.Application.run(Application.java:20)
at org.example.Application.main(Application.java:11)
Caused by: com.ibm.mq.MQException: JMSCMQ0001: IBM MQ call failed with compcode '2' ('MQCC_FAILED') reason '2009' ('MQRC_CONNECTION_BROKEN').
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:203)
... 14 more
Caused by: com.ibm.mq.jmqi.JmqiException: CC=2;RC=2009
at com.ibm.mq.jmqi.remote.api.RemoteHconn$ReconnectionState.recordFailure(RemoteHconn.java:4931)
at com.ibm.mq.jmqi.remote.api.RemoteHconn.setReconnectionFailureInner(RemoteHconn.java:2650)
at com.ibm.mq.jmqi.remote.api.RemoteParentHconn.setReconnectionFailure(RemoteParentHconn.java:152)
at com.ibm.mq.jmqi.remote.impl.RemoteReconnectThread.bestHconn(RemoteReconnectThread.java:265)
at com.ibm.mq.jmqi.remote.impl.RemoteReconnectThread.run(RemoteReconnectThread.java:115)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueItem.runTask(WorkQueueItem.java:319)
at com.ibm.msg.client.commonservices.workqueue.SimpleWorkQueueItem.runItem(SimpleWorkQueueItem.java:99)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueItem.run(WorkQueueItem.java:343)
at com.ibm.msg.client.commonservices.workqueue.WorkQueueManager.runWorkQueueItem(WorkQueueManager.java:312)
at com.ibm.msg.client.commonservices.j2se.workqueue.WorkQueueManagerImplementation$ThreadPoolWorker.run(WorkQueueManagerImplementation.java:1227)
您可以在创建连接后在连接对象上设置一个ExceptionListener。尝试重新连接时，将调用 ExceptionListener 的 onException 方法。这是一个例子：
ExceptionListener exceptionListener = new ExceptionListener(){
@Override
public void onException(JMSException e) {
System.out.println(e);
if(e.getLinkedException() != null)
System.out.println(e.getLinkedException());
}
};
MQQueueConnection connection = (MQQueueConnection) cf.createQueueConnection();
connection.setExceptionListener(exceptionListener);
这里有几点可能会为您解决问题。
下一行设置 MQ 在发现连接丢失后尝试重新连接到队列管理器的时间。
jcf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_TIMEOUT, MQConnectionDetails.RECONNECT_TIMEOUT);
客户端注意到连接中断需要多长时间取决于失败的类型，但在您描述的情况下，它将基于 SVRCONN 通道的 HBINT 设置在队列管理器上。
当没有其他正常流量通过通道时，每 HBINT 秒发送一次心跳。通道的TIMEOUT是根据HBINT，如果HBINT小于60秒那么TIMEOUT是HBINT的两倍，如果HBINT是60秒或者更大，TIMEOUT 是 HBINT 加上 60 秒。超时基于最后一次发送流量或心跳，而不是当您更改防火墙配置时，尽管在这种情况下，您似乎每隔几秒发送一条消息，所以这应该已经关闭。
根据日志，我不确定它是否像我预期的那样选择了 RECONNECT 选项，当重新连接超时到期时，您会得到这些错误之一，而不是 MQRC_CONNECTION_BROKEN:
MQRC_RECONNECT_FAILEDMQRC_RECONNECT_TIMED_OUT
在我的样本中，我是这样设置的，也许可以试试这个，而不是你目前的设置方式：
jcf.setClientReconnectOptions(WMQConstants.WMQ_CLIENT_RECONNECT);
jcf.setClientReconnectTimeout(MQConnectionDetails.RECONNECT_TIMEOUT);
根据我所看到的，我猜你的 HBINT 在 SVRCONN 频道上设置为 45 秒，并且连接只是在 MQRC_CONNECTION_BROKEN 90 秒时超时并且从不尝试重新连接。
我遇到了与主题发起人相同的问题。在花了几个小时筛选互联网上可用的信息、与同事交谈并试图让重新连接正常工作后，我放弃了，并决定通过模拟难以理解的重新连接功能来解决这个问题。我希望它能帮助其他在 IBM MQ 上苦苦挣扎的人。我写的 class 基本上做了两件事：
- 反复尝试连接到 IBM MQ，尝试之间的间隔不断增加。
- 连接后，设置一个错误处理程序，当连接出现问题时由 IBM MQ 触发（使用相同的逻辑重新连接）。
首先，这是 class 本身：
package com.raiks.mqclient;
import javax.jms.Destination;
import javax.jms.JMSConsumer;
import javax.jms.JMSContext;
import javax.jms.JMSException;
import com.ibm.msg.client.jms.JmsConnectionFactory;
import com.ibm.msg.client.wmq.WMQConstants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.raiks.mqclient.IbmMqMessageListener;
/**
* This class implements the reconnection logic for JMS brokers that don't support it
* In particular, it does it for IBM MQ with its incomprehensible reconnection algorithm
* It's expected that each connection manager receives a separate connection factory
* and a message listener - it's not guaranteed for those to be thread safe
*/
public final class IbmMqJmsConnectionManager {
private static final Logger LOGGER = LoggerFactory.getLogger(IbmMqJmsConnectionManager.class);
private static final int INITIAL_RECONNECTION_DELAY_MS = 6000;
private static final int MAX_RECONNECTION_DELAY_MS = 60000;
private static final String QUEUE_PREIX = "queue:///";
private final String connectorName;
private final JmsConnectionFactory connectionFactory;
private final String queueName;
private final IbmMqMessageListener messageListener;
private final int initialReconnectionDelayMs;
private final int maxReconnectionDelayMs;
public IbmMqJmsConnectionManager(
String connectorName,
JmsConnectionFactory connectionFactory,
String queueName,
IbmMqMessageListener messageListener,
int initialReconnectionDelayMs,
int maxReconnectionDelayMs
) {
this.connectorName = connectorName;
this.connectionFactory = connectionFactory;
this.queueName = queueName;
this.messageListener = messageListener;
this.initialReconnectionDelayMs = initialReconnectionDelayMs;
this.maxReconnectionDelayMs = maxReconnectionDelayMs;
}
/**
* Attempts to connect to a JMS broker and makes continuous retries with an increasing interval if fails
* When the maximum interval is reached, issues an error and keeps on trying
* Sets the exception listener (a callback) in the created JMSContext which calls this method when the
* connection with the broker goes down due to network issue or intentional connection termination
*/
public void connectToBrokerWithRetries() {
String connectionDetails = formatConnectionDetails();
LOGGER.info("Attempting to connect to JMS broker '{}'. Connection details = {}", connectorName, connectionDetails);
JMSContext context = null;
int sleepingTimeMs = INITIAL_RECONNECTION_DELAY_MS;
int accumulatedSleepingTimeMs = 0;
// Try to reconnect until we succeed. IMPORTANT! This is a blocking loop that never ends so it must be run in a separate thread
while (context == null) {
try {
context = connectionFactory.createContext(JMSContext.AUTO_ACKNOWLEDGE);
LOGGER.info("Successfully connected to the JMS broker '{}'. Connection details = {}", connectorName, connectionDetails);
boolean hadUnsuccessfulConnectionAttempts = accumulatedSleepingTimeMs > 0;
if (hadUnsuccessfulConnectionAttempts) {
LOGGER.warn(
"Before this successful attempt, I spent {} ms repeatedly trying to connect to '{}'. Please check the broker's health. Connection details = {}",
accumulatedSleepingTimeMs, connectorName, connectionDetails
);
}
Destination destination = context.createQueue(QUEUE_PREIX + queueName);
JMSConsumer jmsConsumer = context.createConsumer(destination);
jmsConsumer.setMessageListener(messageListener);
LOGGER.info("Successfully connected to the queue '{}' at '{}'. Connection details = {}", queueName, connectorName, connectionDetails);
// Sets a callback that will be invoked when something happens with a connection to a broker
context.setExceptionListener(
jmsException -> {
LOGGER.warn("Something bad happened to JMS broker connection to '{}'. I will try to reconnect. Connection details = {}", connectorName, connectionDetails);
connectToBrokerWithRetries();
}
);
} catch (Exception e) {
LOGGER.warn(
"Failed to create a JMS context for '{}'. I will wait for {} ms and then make a reconnection attempt. Connection details = {}",
connectorName, sleepingTimeMs, connectionDetails, e
);
context = null;
try {
Thread.sleep(sleepingTimeMs);
accumulatedSleepingTimeMs += sleepingTimeMs;
int doubledSleepingTime = sleepingTimeMs * 2;
// We double the sleeping time on each subsequent attempt until we hit the limit
// Then we just keep on reconnecting forever using the limit value
boolean nextReconnectionDelayWillExceedMaxDelay = doubledSleepingTime >= MAX_RECONNECTION_DELAY_MS;
if (nextReconnectionDelayWillExceedMaxDelay) {
sleepingTimeMs = MAX_RECONNECTION_DELAY_MS;
LOGGER.error(
"Repeatedly failed to create a JMS context for {} ms. I will keep on trying every {} ms but please check the broker availability. Connection details = {}",
accumulatedSleepingTimeMs, sleepingTimeMs, connectionDetails
);
} else {
sleepingTimeMs = doubledSleepingTime;
}
} catch (InterruptedException ex) {
throw new RuntimeException(ex);
}
}
}
}
private String formatConnectionDetails() {
String connectionDetails = "[]";
try {
connectionDetails = String.format(
"[ host = %s, port = %d, queueManager = %s, channel = %s, user = %s ]",
connectionFactory.getStringProperty(WMQConstants.WMQ_HOST_NAME),
connectionFactory.getIntProperty(WMQConstants.WMQ_PORT),
connectionFactory.getStringProperty(WMQConstants.WMQ_QUEUE_MANAGER),
connectionFactory.getStringProperty(WMQConstants.WMQ_CHANNEL),
connectionFactory.getStringProperty(WMQConstants.USERID)
);
} catch (Exception e) {
LOGGER.warn("Failed to get the connection details. This is not critical, but the details will be unavailable");
}
return connectionDetails;
}
}
下面是您的使用方法：
LOGGER.info("Starting the initial connection thread");
Thread cftInitialConnectionThread = new Thread(cftConnectionManager::connectToBrokerWithRetries);
cftInitialConnectionThread.start();
检查这段代码，因为我正在使用 IBM WMQ 9.2.3，在 CentOS 8 上使用带有 Pacemaker 的 3 节点 IBM WMQ 多实例。
package com.ibm.mq.samples.jms;
import javax.jms.Destination;
import javax.jms.JMSConsumer;
import javax.jms.JMSContext;
import javax.jms.JMSException;
import javax.jms.JMSProducer;
import javax.jms.TextMessage;
import com.ibm.msg.client.jms.JmsConnectionFactory;
import com.ibm.msg.client.jms.JmsFactoryFactory;
import com.ibm.msg.client.wmq.WMQConstants;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
public class JmsPutGet {
// System exit status value (assume unset value to be 1)
private static int status = 1;
// Create variables for the connection to MQ
private static final String HOST = "192.168.49.140"; // Host name or IP address
private static final int PORT = 10200; // Listener port for your queue manager
private static final String CHANNEL = "CHANNEL1"; // Channel name
private static final String QMGR = "HAQM1"; // Queue manager name
private static final String APP_USER = ""; // User name that application uses to connect to MQ
private static final String APP_PASSWORD = ""; // Password that the application uses to connect to MQ
private static final String QUEUE_NAME = "SOURCE"; // Queue that the application uses to put and get messages to and from
private static final int RECONNECT_TIMEOUT = 60; // 1 minute
private static JMSContext context = null;
private static Destination destination = null;
public static void main(String[] args) {
// Variables
JMSProducer producer = null;
JMSConsumer consumer = null;
LocalDateTime now = null;
try {
setupResources();
long uniqueNumber = System.currentTimeMillis() % 1000;
TextMessage message = context.createTextMessage("Your lucky number today is " + uniqueNumber);
DateTimeFormatter dtf = DateTimeFormatter.ofPattern("uuuu/MM/dd HH:mm:ss");
for(int i=0; i>=0; i++){
producer = context.createProducer();
producer.send(destination, message);
//System.out.println("Sent message:\n " + i + " " + message);
System.out.println("\nMensaje enviado:\n " + i );
now = LocalDateTime.now();
System.out.println(dtf.format(now));
consumer = context.createConsumer(destination); // autoclosable
String receivedMessage = consumer.receiveBody(String.class, 15000); // in ms or 15 seconds
//System.out.println("\nReceived message:\n " + i + " " + receivedMessage);
System.out.println("\nMensaje recibido:\n " + i );
now = LocalDateTime.now();
System.out.println(dtf.format(now));
Thread.sleep(1000);
}
context.close();
recordSuccess();
} catch (Exception ex) {
recordFailure(ex);
System.out.println("DETECTING ERROR... RECONNECTING");
setupResources();
}
} // end main()
private static void setupResources() {
boolean connected = false;
while (!connected) {
try {
// Create a connection factory
JmsFactoryFactory ff = JmsFactoryFactory.getInstance(WMQConstants.WMQ_PROVIDER);
JmsConnectionFactory cf = ff.createConnectionFactory();
// Set the properties
cf.setStringProperty(WMQConstants.WMQ_HOST_NAME, HOST);
cf.setIntProperty(WMQConstants.WMQ_PORT, PORT);
//cf.setStringProperty(WMQConstants.WMQ_CONNECTION_NAME_LIST, "192.168.49.140(10200),192.168.49.131(10200),192.168.49.132(10200)");
cf.setStringProperty(WMQConstants.WMQ_CHANNEL, CHANNEL);
cf.setIntProperty(WMQConstants.WMQ_CONNECTION_MODE, WMQConstants.WMQ_CM_CLIENT);
cf.setStringProperty(WMQConstants.WMQ_QUEUE_MANAGER, QMGR);
cf.setStringProperty(WMQConstants.WMQ_APPLICATIONNAME, "JmsPutGet (JMS)");
cf.setBooleanProperty(WMQConstants.USER_AUTHENTICATION_MQCSP, true);
cf.setStringProperty(WMQConstants.USERID, APP_USER);
cf.setStringProperty(WMQConstants.PASSWORD, APP_PASSWORD);
cf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_TIMEOUT, RECONNECT_TIMEOUT);
cf.setIntProperty(WMQConstants.WMQ_CLIENT_RECONNECT_OPTIONS, WMQConstants.WMQ_CLIENT_RECONNECT);
//cf.setStringProperty(WMQConstants.WMQ_SSL_CIPHER_SUITE, "*TLS12");
// Create JMS objects
context = cf.createContext();
destination = context.createQueue("queue:///" + QUEUE_NAME);
// no exception? then we connected ok
connected = true;
System.out.println("CONNECTED");
}
catch (JMSException je) {
// sleep and then have another attempt
System.out.println("RECONNECTING");
try {Thread.sleep(30*1000);} catch (InterruptedException ie) {}
}
}
}
private static void recordSuccess() {
System.out.println("SUCCESS");
status = 0;
return;
}
private static void recordFailure(Exception ex) {
if (ex != null) {
if (ex instanceof JMSException) {
processJMSException((JMSException) ex);
} else {
System.out.println(ex);
}
}
System.out.println("FAILURE");
status = -1;
return;
}
private static void processJMSException(JMSException jmsex) {
System.out.println(jmsex);
Throwable innerException = jmsex.getLinkedException();
if (innerException != null) {
System.out.println("Inner exception(s):");
}
while (innerException != null) {
System.out.println(innerException);
innerException = innerException.getCause();
}
return;
}
}
我在 github 中添加了一个 link 以供参考 https://github.com/fintecheando/IBMMQSample