Point-to-point communication: message sending - Queue - message receiving, message sending to queue, message receiver blocking receiving message.
If there are no messages, the receive() method of receiving messages blocks.
package mq.p2p;
import java.util.concurrent.atomic.AtomicInteger;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.JMSException;
import javax.jms.MessageProducer;
import javax.jms.Queue;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
public class Producter {
//ActiveMq's default user name
private static final String USERNAME = ActiveMQConnection.DEFAULT_USER;
//ActiveMq's default login password
private static final String PASSWORD = ActiveMQConnection.DEFAULT_PASSWORD;
//ActiveMQ's link address
//private static final String BROKEN_URL = ActiveMQConnection. DEFAULT_BROKER_URL;
private static final String BROKEN_URL = "failover://tcp://192.168.191.128:61616";
AtomicInteger count = new AtomicInteger(0);
//Link factory
ConnectionFactory connectionFactory;
//Link object
Connection connection;
//Transaction Manage
Session session;
ThreadLocal<MessageProducer> threadLocal = new ThreadLocal<>();
public void init(){
try {
//Create a link factory
connectionFactory = new ActiveMQConnectionFactory(USERNAME,PASSWORD,BROKEN_URL);
//Create a link from the factory
connection = connectionFactory.createConnection();
//Open the link
connection.start( );
//Create a transaction (the level of the transaction can be set by parameters here)
session = connection.createSession(true,Session.SESSION_TRANSACTED);
} catch (JMSException e) {
e.printStackTrace();
}
}
public void sendMessage(String disname){
try {
//Create a message queue
Queue queue = session.createQueue(disname);
//Message producer
MessageProducer messageProducer = null;
if(threadLocal.get()!=null){
messageProducer = threadLocal.get ();
}else{
messageProducer = session.createProducer(queue);
threadLocal.set(messageProducer);
}
while(true){
Thread.sleep(1000);
int num = count.getAndIncrement();
//create a message
TextMessage msg = session.createTextMessage(Thread.currentThread().getName()+
"productor: I'm a handsome guy, I'm producing something now!,count:"+num);
System.out.println(Thread.currentThread() .getName()+
"productor: I'm a handsome guy, I'm producing something now!,count:"+num);
//Send message
messageProducer.send(msg);
//Commit transaction
session.commit();
}
} catch (JMSException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
package mq.p2p;
import java.util.concurrent.atomic.AtomicInteger;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.Queue;
import javax.jms.Session;
import javax.jms.TextMessage;
import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
public class Consumer {
private static final String USERNAME = ActiveMQConnection.DEFAULT_USER;
private static final String PASSWORD = ActiveMQConnection.DEFAULT_PASSWORD;
//private static final String BROKEN_URL = ActiveMQConnection.DEFAULT_BROKER_URL;
private static final String BROKEN_URL = "failover://tcp://192.168.191.128:61616";
ConnectionFactory connectionFactory;
Connection connection;
Session session;
ThreadLocal<MessageConsumer> threadLocal = new ThreadLocal<>();
AtomicInteger count = new AtomicInteger();
public void init(){
try {
connectionFactory = new ActiveMQConnectionFactory(USERNAME,PASSWORD,BROKEN_URL);
connection = connectionFactory.createConnection();
connection.start();
session = connection.createSession(false,Session.AUTO_ACKNOWLEDGE);
} catch (JMSException e) {
e.printStackTrace();
}
}
public void getMessage(String disname){
try {
Queue queue = session.createQueue(disname);
MessageConsumer consumer = null;
if(threadLocal.get()!=null){
consumer = threadLocal.get();
}else{
consumer = session.createConsumer(queue);
threadLocal.set(consumer);
}
while(true){
Thread.sleep(1000);
System.out.println("..");
TextMessage msg = (TextMessage) consumer.receive();
System.out.println("....");
if(msg!=null) {
msg.acknowledge();
System.out.println(Thread.currentThread().getName()+": Consumer:我是消费者，我正在消费Msg"+msg.getText()+"--->"+count.getAndIncrement());
}else {
break;
}
}
} catch (JMSException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
package mq.p2p;
public class ProducterTest {
public static void main(String[] args){
Producter producter = new Producter();
producter.init();
ProducterTest testMq = new ProducterTest();
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
//Thread 1
new Thread(testMq.new ProductorMq(producter)).start();
//Thread 2
new Thread(testMq.new ProductorMq(producter)).start();
//Thread 3
new Thread(testMq.new ProductorMq(producter)).start();
//Thread 4
new Thread(testMq.new ProductorMq(producter)).start();
//Thread 5
new Thread(testMq.new ProductorMq(producter)).start();
}
private class ProductorMq implements Runnable{
Producter producter;
public ProductorMq(Producter producter){
this.producter = producter;
}
@Override
public void run() {
while(true){
try {
producter.sendMessage("Jaycekon-MQ");
Thread.sleep(10000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
}
package mq.p2p;
public class ConsumerTest {
public static void main(String[] args){
Consumer comsumer = new Consumer();
comsumer.init();
ConsumerTest testConsumer = new ConsumerTest();
new Thread(testConsumer.new ConsumerMq(comsumer)).start();
new Thread(testConsumer.new ConsumerMq(comsumer)).start();
new Thread(testConsumer.new ConsumerMq(comsumer)).start();
new Thread(testConsumer.new ConsumerMq(comsumer)).start();
}
private class ConsumerMq implements Runnable{
Consumer comsumer;
public ConsumerMq(Consumer comsumer){
this.comsumer = comsumer;
}
@Override
public void run() {
while(true){
try {
comsumer.getMessage("Jaycekon-MQ");
Thread.sleep(10000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
}