用于向IBMMQ发送消息的示例代码非常简单：

import com.ibm.msg.client.jms.JmsFactoryFactory
import com.ibm.msg.client.wmq.WMQConstants

import javax.jms.Session

def hostName = "your IBMMQ Host"
def hostPort = 1414
def channelName = "DEV.APP.SVRCONN"
def queueManagerName = "QM1"
def queueName = "DEV.QUEUE.1"

def ff = JmsFactoryFactory.getInstance(WMQConstants.WMQ_PROVIDER)
def cf = ff.createConnectionFactory()

cf.setStringProperty(WMQConstants.WMQ_HOST_NAME, hostName)
cf.setIntProperty(WMQConstants.WMQ_PORT, hostPort)
cf.setStringProperty(WMQConstants.WMQ_CHANNEL, channelName)
cf.setIntProperty(WMQConstants.WMQ_CONNECTION_MODE, WMQConstants.WMQ_CM_CLIENT)
cf.setStringProperty(WMQConstants.WMQ_QUEUE_MANAGER, queueManagerName)

def conn = cf.createConnection("app", "test")
def sess = conn.createSession(false, Session.AUTO_ACKNOWLEDGE)

def destination = sess.createQueue(queueName)

conn.start()

def producer = sess.createProducer(destination)

def payload = "your message here"
def msg = sess.createTextMessage(payload)

producer.send(msg)

producer.close()

请查看以下材料：

• Write and run your first IBM MQ JMS application
• IBM MQ testing with JMeter - Learn How

关于构建SWIFT报文-您已经提供了显示报文主体外观的链接。