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2017/12/08

[Java] How to write text message to IBM MQ?

Problem
I am using IBM MQ as my queue service.
How to write text message into IBM MQ by Java?
How-To
Here has 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.ibm.mq.jms.MQQueueConnection;
import com.ibm.mq.jms.MQQueueConnectionFactory;
import com.ibm.mq.jms.MQQueueReceiver;
import com.ibm.mq.jms.MQQueueSender;
import com.ibm.mq.jms.MQQueueSession;
import com.tdcc.mql.enumeration.MQParamKeyType;
import com.tdcc.mql.utils.MqlUtils;

import lombok.extern.slf4j.Slf4j;

@Slf4j
public class TestMQService {

    private static TestMQService mqServuce;
    
    private static String mqHost = MQParamKeyType.MQ_HOST.getSystemValue();
    private static String mqChannel = MQParamKeyType.MQ_CHANNEL.getSystemValue();
    private static String mqUser = MQParamKeyType.MQ_USER.getSystemValue();
    private static String mqPwd = MQParamKeyType.MQ_PASSWORD.getSystemValue();
    private static String mqQueueMgr = MQParamKeyType.MQ_QUEUEMGR.getSystemValue();
    private static String mqPort = MQParamKeyType.MQ_PORT.getSystemValue();

    public static TestMQService getInstance() {
        if (mqServuce == null) {
            mqServuce = new TestMQService();
            return mqServuce;
        } else {
            return mqServuce;
        }
    }
    
    /**
     * Send Message to MQ.
     * 
     * @param queueName
     * @param message
     * @throws JMSException
     */
    public void writeMessageToMQ(String queueName, String message) throws JMSException {
        MQQueueConnectionFactory connFactory = new MQQueueConnectionFactory();
        MQQueueSender sender = null;
        MQQueueSession session = null;
        MQQueueConnection connection = null;
        
        try {
            connFactory.setHostName(mqHost);
            connFactory.setPort(Integer.parseInt(mqPort));
            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);
            
            sender = (MQQueueSender) session.createSender(queue);
            
            connection.start();
            
            TextMessage textMsg = session.createTextMessage();
            textMsg.setText(message);
            
            sender.send(textMsg);
            
        } catch (JMSException e) {
            log.error(MqlUtils.toStackTrace(e));
        } finally {
            if (sender != null) {
                sender.close();
            }
            if (session != null) {
                session.close();
            }
            if (connection != null) {
                connection.close();
            }
        }
    }
}




Posted by Albert Kuo at 8:00 AM
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