메시지는 내부에 태그가있는 xml 형식의 대기열에 있습니다. 리스너가 a, b 또는 c의 destinationInstance가 포함 된 메시지를 선택하지 않도록이 태그를 읽어야합니다.XML 파일의 내용을 Jms 대기열에 읽는 방법
XML은 다음과 같습니다 :
<?xml version="1.0"?>
-<Envelope>
-<Header version="2.0">
<senderInstance>asas</senderInstance>
<destination>asassd</destination>
<destinationInstance>a</destinationInstance>
<correlationId>94825641</correlationId>
</Header>
-<Envelope>
자바 코드 :
공공 무효 listenMessage (최종 문자열 qLookUpName, 최종 JMSClientFactory jmsClientFactory, noOfListeners를 INT) {
Queue queue = null;
QueueReceiver[] receiver = new QueueReceiver[noOfListeners + 1];
Message message = null;
queue = queueMap.get(qLookUpName);
tracer.info("Queue name - " + queue);
try {
if (null == queue) {
InitialContext ctx = new InitialContext(ldapProps);
queue = (javax.jms.Queue) ctx.lookup(qLookUpName);
queueMap.put(qLookUpName, queue);
}
logger.info("Entered listenJMSMessage()");
for (int receiverCnt = 0; receiverCnt < noOfListeners; receiverCnt++) {
try {
logger.debug("queuename : " + queue.getQueueName());
tracer.info("queuename : " + queue.getQueueName());
receiver[receiverCnt] = session.createReceiver(queue);
tracer.info("receiver : " + receiver);
logger.debug("Listening for Messages");
receiver[receiverCnt].setMessageListener(new MessageListener(){
JMSClientFactory clientFactory= jmsClientFactory;
Document xmlDocument;
public void onMessage(Message arg0) {
try {
logger.debug("got message "+ arg0.getJMSCorrelationID());
logger.debug("Received message from the queue :"
+ arg0.getJMSCorrelationID()+" On Listener :" + this);
String xmlResponse=((TextMessage)arg0).getText();
xmlDocument = DocumentBuilderFactory.newInstance()
.newDocumentBuilder().parse(new InputSource(new StringReader(xmlResponse)));
String destinationInstance=xmlDocument.getElementsByTagName("destinationInstance").item(0).getTextContent();
logger.debug(" destinationInstance: " + destinationInstance);
if(destinationInstance.equalsIgnoreCase("a") || destinationInstance.equalsIgnoreCase("b") ||
destinationInstance.equalsIgnoreCase("c")){
logger.debug("Calling process(arg0) method.");
clientFactory.process(arg0);
}
} catch (JMSException e) {
logger.error("Exception - " , e);
// TODO Auto-generated catch block
//e.printStackTrace();
} catch (Exception e) {
logger.error("Exception - " , e);
} catch(Throwable t) {
logger.error("Error while dequeuing -", t);
} finally {
NDC.remove();
}
}
});
} catch (JMSException e) {
logger.debug("stack trace -" ,e);
}
}
} catch (NamingException e) {
logger.debug("NamingException stack trace -" ,e);
}
logger.debug("Listening for another message");
}
어떤 JMS 공급자를 사용합니까? –