[Java] How to read message from IBM MQ?

Problem
I am using IBM MQ as my queue service.
How to read message (text format) from IBM MQ by Java?

How-To
Here has the sample code:

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package com.xxx.mql.service; import java.io.IOException; import java.util.Enumeration; import javax.jms.JMSException; import javax.jms.Message; import javax.jms.Queue; import javax.jms.QueueBrowser; import javax.jms.Session; import javax.jms.TextMessage; import org.apache.commons.lang.StringUtils; import com.fasterxml.jackson.core.JsonProcessingException; import com.google.common.base.Strings; import com.ibm.mq.jms.MQQueueConnection; import com.ibm.mq.jms.MQQueueConnectionFactory; import com.ibm.mq.jms.MQQueueReceiver; import com.ibm.mq.jms.MQQueueSession; import com.tdcc.common.type.MQInfoEnum; import com.tdcc.mql.utils.MqlUtils; import lombok.extern.slf4j.Slf4j; @Slf4j public class TestMQService { private static TestMQService mqServuce; private static String mqHost = MQInfoEnum.MQ_HOST.getValue(); private static String mqChannel = MQInfoEnum.MQ_CHANNEL.getValue(); private static String mqUser = MQInfoEnum.MQ_USER.getValue(); private static String mqPwd = ""; private static String mqQueueMgr = MQInfoEnum.MQ_QUEUEMGR.getValue(); public static TestMQService getInstance() { if (mqServuce == null) { mqServuce = new TestMQService(); return mqServuce; } else { return mqServuce; } } /** * 取得 queue message. * * @param queueName * @return * @throws JMSException */ public String readMessage(String queueName) throws JMSException { MQQueueConnectionFactory connFactory = new MQQueueConnectionFactory(); MQQueueReceiver receiver = null; MQQueueSession session = null; MQQueueConnection connection = null; String message = ""; try { // Config connFactory.setHostName(mqHost); connFactory.setPort(1414); connFactory.setTransportType(1); connFactory.setQueueManager(mqQueueMgr); connFactory.setChannel(mqChannel); connection = (MQQueueConnection) connFactory.createQueueConnection(); session = (MQQueueSession) connection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE); Queue queue = session.createQueue(queueName); receiver = (MQQueueReceiver) session.createReceiver(queue); connection.start(); if (receiver != null) { Message msg = receiver.receiveNoWait(); if (msg == null) { message = ""; } else { if (msg instanceof TextMessage) { TextMessage textMsg = (TextMessage) msg; message = StringUtils.defaultIfBlank(textMsg.getText(), ""); } else { String error = "*****不是文字訊息，跳過此筆訊息，class type = " + msg.getClass().toString(); log.error(error); } } } } catch (JMSException e) { log.error(MqlUtils.toStackTrace(e)); } finally { if (receiver != null) { receiver.close(); } if (session != null) { session.close(); } if (connection != null) { connection.close(); } } log.info("[readMessageByJMS] message = " + message); return message; } }