Java 消息侦听器onMessage()方法未从队列中删除消息
我正在实现MessageListner类的onMessgae()方法,但它不起作用,即使我将调试点放在这个方法中,但调试器也没有放在这个方法中 使用此方法从队列接收消息。 下面是我用来接收消息的代码,但当我通过sender类发送消息时,它不会给出任何消息,消息会发送到JMS服务器,并在服务器上以这种方式显示 名称服务器目标当前消息当前消息支出消息收到JMSServer-0 AdminServer 3 15 1 2 接收器代码:Java 消息侦听器onMessage()方法未从队列中删除消息,java,jms,Java,Jms,我正在实现MessageListner类的onMessgae()方法,但它不起作用,即使我将调试点放在这个方法中,但调试器也没有放在这个方法中 使用此方法从队列接收消息。 下面是我用来接收消息的代码,但当我通过sender类发送消息时,它不会给出任何消息,消息会发送到JMS服务器,并在服务器上以这种方式显示 名称服务器目标当前消息当前消息支出消息收到JMSServer-0 AdminServer 3 15 1 2 接收器代码: { import java.util.Hashtable; imp
{
import java.util.Hashtable;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.Queue;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueReceiver;
import javax.jms.QueueSession;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
public class QueueReceive implements MessageListener {
public final static String Server="t3://localhost:7001";
public final static String JNDI_FACTORY = "weblogic.jndi.WLInitialContextFactory";
public final static String JMS_FACTORY = "CF1";
enter code here
public final static String QUEUE = "Queue1";
private QueueConnectionFactory qconFactory;
private QueueConnection qcon;
private QueueSession qsession;
private QueueReceiver qreceiver;
private Queue queue;
private boolean quit = false;
String s1 = "avanish";
public void init(Context ctx, String queueName) throws NamingException, JMSException {
qconFactory = (QueueConnectionFactory) ctx.lookup(JMS_FACTORY);
qcon = qconFactory.createQueueConnection();
qsession = qcon.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
queue = (Queue) ctx.lookup(queueName);
qreceiver = qsession.createReceiver(queue);
qreceiver.setMessageListener(this);
qcon.start();
System.out.println(qreceiver.receive());
}
public void close() throws JMSException {
qreceiver.close();
qsession.close();
qcon.close();
}
public static void main(String[] args) throws Exception {
/*if (args.length != 1) {
System.out.println("Usage: java examples.jms.queue.QueueReceive WebLogicURL");
return;
}*/
InitialContext ic = getInitialContext();
QueueReceive qr = new QueueReceive();
qr.init(ic, QUEUE);
System.out.println("JMS Ready To Receive Messages (To quit, send a \"quit\" message).");
synchronized (qr) {
while (!qr.quit) {
try {
qr.wait();
} catch (InterruptedException ie) {
}
}
}
qr.close();
}
private static InitialContext getInitialContext() throws NamingException {
Hashtable<String, String> env = new Hashtable<String, String>();
env.put(Context.INITIAL_CONTEXT_FACTORY, JNDI_FACTORY);
env.put(Context.PROVIDER_URL, Server);
return new InitialContext(env);
}
@Override
public void onMessage(Message msg) {
try {
String msgText;
if(msg instanceof TextMessage){
msgText = ((TextMessage) msg).getText();
}
else{
msgText = msg.toString();
}
System.out.println("reciver msg" + msgText);
if(msgText.equalsIgnoreCase("quit")){
synchronized (this) {
quit= true;
this.notifyAll();
}
}
} catch (JMSException e) {
System.err.println("Exception" + e.getMessage());
}
}
}
}
{
导入java.util.Hashtable;
导入javax.jms.jmsception;
导入javax.jms.Message;
导入javax.jms.MessageListener;
导入javax.jms.Queue;
导入javax.jms.QueueConnection;
导入javax.jms.QueueConnectionFactory;
导入javax.jms.QueueReceiver;
导入javax.jms.QueueSession;
导入javax.jms.Session;
导入javax.jms.TextMessage;
导入javax.naming.Context;
导入javax.naming.InitialContext;
导入javax.naming.NamingException;
公共类QueueReceive实现MessageListener{
公共最终静态字符串Server=“t3://localhost:7001”;
公共最终静态字符串JNDI_FACTORY=“weblogic.JNDI.WLInitialContextFactory”;
公共最终静态字符串JMS_FACTORY=“CF1”;
在这里输入代码
公共最终静态字符串QUEUE=“Queue1”;
专用队列连接工厂qconFactory;
专用排队连接;
私人排队会话;
专用队列接收器qreceiver;
专用队列;
private boolean quit=false;
字符串s1=“avanish”;
public void init(上下文ctx,字符串queueName)引发NamingException,JMSExException{
qconFactory=(QueueConnectionFactory)ctx.lookup(JMS\u工厂);
qcon=qconFactory.createQueueConnection();
qsession=qcon.createQueueSession(false,Session.AUTO_ACKNOWLEDGE);
queue=(queue)ctx.lookup(queueName);
qreceiver=qsession.createReceiver(队列);
qreceiver.setMessageListener(此);
qcon.start();
System.out.println(qreceiver.receive());
}
public void close()引发JMSExException{
qreceiver.close();
qsession.close();
qcon.close();
}
公共静态void main(字符串[]args)引发异常{
/*如果(args.length!=1){
System.out.println(“用法:java examples.jms.queue.QueueReceive WebLogicURL”);
返回;
}*/
InitialContext ic=getInitialContext();
QueueReceive qr=新的QueueReceive();
qr.init(ic,队列);
println(“JMS准备接收消息(要退出,发送一条“退出”消息)”;
同步(qr){
而(!qr.退出){
试一试{
qr.wait();
}捕获(中断异常ie){
}
}
}
qr.close();
}
私有静态InitialContext getInitialContext()引发NamingException{
Hashtable env=新的Hashtable();
环境放置(Context.INITIAL\u Context\u工厂、JNDI\u工厂);
环境放置(Context.PROVIDER\uURL,服务器);
返回新的InitialContext(env);
}
@凌驾
公共消息无效(消息消息消息){
试一试{
字符串msgText;
if(消息实例of TextMessage){
msgText=((TextMessage)msg.getText();
}
否则{
msgText=msg.toString();
}
System.out.println(“接收消息”+msgText);
if(msgText.equalsIgnoreCase(“退出”)){
已同步(此){
退出=真;
this.notifyAll();
}
}
}捕获(JME){
System.err.println(“异常”+e.getMessage());
}
}
}
}
发件人代码:
{
import javax.jms.jmsceception;
导入javax.jms.Queue;
导入java.io.BufferedReader;
导入java.io.IOException;
导入java.io.InputStreamReader;
导入java.util.Hashtable;
导入javax.jms.*;
导入javax.jms.QueueConnection;
导入javax.jms.QueueConnectionFactory;
导入javax.jms.QueueSender;
导入javax.jms.QueueSession;
导入javax.jms.Session;
导入javax.jms.TextMessage;
导入javax.naming.Context;
导入javax.naming.InitialContext;
导入javax.naming.NamingException;
公共类队列发送{
公共最终静态字符串Server=“t3://localhost:7001”;
公共最终静态字符串JNDI_FACTORY=“weblogic.JNDI.WLInitialContextFactory”;
公共最终静态字符串JMS_FACTORY=“CF1”;
公共最终静态字符串QUEUE=“Queue1”;
//公共最终静态字符串QUEUE=“DQ”;
专用队列连接工厂qconFactory;
专用排队连接;
私人排队会话;
专用队列发送器;
专用队列;
私人短信;
public void init(上下文ctx,字符串queueName)引发NamingException,JMSExException
{
qconFactory=(QueueConnectionFactory)ctx.lookup(JMS\u工厂);
qcon=qconFactory.createQueueConnection();
qsession=qcon.createQueueSession(false,Session.AUTO_ACKNOWLEDGE);
queue=(queue)ctx.lookup(queueName);
qsender=qsession.createSender(队列);
msg=qsession.createTextMessage();
qcon.start();
}
公共void发送(字符串消息)引发JMSException{
msg.setText(消息);
//msg.acknowledge();
qsender.setPriority(9);
qsender.send(msg);
}
public void close()引发JMSExException{
qsender.close();
qsession.close();
qcon.close();
}
公共静态void main(字符串[]args)引发异常{
InitialContext ic=getInitialContext();
QueueSend qs=新建QueueSend();
qs.init(
import javax.jms.JMSException;
import javax.jms.Queue;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Hashtable;
import javax.jms.*;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueSender;
import javax.jms.QueueSession;
import javax.jms.Session;
import javax.jms.TextMessage;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
public class QueueSend {
public final static String Server="t3://localhost:7001";
public final static String JNDI_FACTORY = "weblogic.jndi.WLInitialContextFactory";
public final static String JMS_FACTORY = "CF1";
public final static String QUEUE = "Queue1";
// public final static String QUEUE = "DQ";
private QueueConnectionFactory qconFactory;
private QueueConnection qcon;
private QueueSession qsession;
private QueueSender qsender;
private Queue queue;
private TextMessage msg;
public void init(Context ctx, String queueName) throws NamingException, JMSException
{
qconFactory = (QueueConnectionFactory) ctx.lookup(JMS_FACTORY);
qcon = qconFactory.createQueueConnection();
qsession = qcon.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
queue = (Queue) ctx.lookup(queueName);
qsender = qsession.createSender(queue);
msg = qsession.createTextMessage();
qcon.start();
}
public void send(String message) throws JMSException {
msg.setText(message);
//msg.acknowledge();
qsender.setPriority(9);
qsender.send(msg);
}
public void close() throws JMSException {
qsender.close();
qsession.close();
qcon.close();
}
public static void main(String[] args) throws Exception {
InitialContext ic = getInitialContext();
QueueSend qs = new QueueSend();
qs.init(ic, QUEUE);
readAndSend(qs);
qs.close();
}
private static void readAndSend(QueueSend qs) throws IOException, JMSException
{
BufferedReader msgStream = new BufferedReader(new InputStreamReader(System.in));
String line = null;
boolean quitNow = false;
do {
System.out.print("Enter message (\"quit\" to quit): \n");
line = msgStream.readLine();
if (line != null && line.trim().length() != 0) {
qs.send(line);
System.out.println("JMS Message Sent: " + line + "\n");
quitNow = line.equalsIgnoreCase("quit");
}
} while (!quitNow);
}
private static InitialContext getInitialContext()
throws NamingException
{
Hashtable<String, String> env = new Hashtable<String, String>();
env.put(Context.INITIAL_CONTEXT_FACTORY, JNDI_FACTORY);
env.put(Context.PROVIDER_URL, Server);
return new InitialContext(env);
}
}
}
queue = (Queue) ctx.lookup(queueName);
qreceiver = qsession.createReceiver(queue);
message = qreceiver.receiveNoWait();