JMS ActiveMQ案例

创建一个web工程

导入ActiveMQ依赖的jar包 activemq-all-5.9.jar

写一个生产者(send)servlet

package com.sun.jms;
import java.io.IOException;
import java.io.PrintWriter;

import javax.jms.DeliveryMode;
import javax.jms.Queue;
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.InitialContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
* Servlet implementation class JMSTest
*/
@WebServlet("/Send")
public class Send extends HttpServlet {
private static final long serialVersionUID = 1L;

/**
* @see HttpServlet#HttpServlet()
*/
public Send() {
super();
// TODO Auto-generated constructor stub
}

/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
PrintWriter out = response.getWriter();

try {
// get the initial context
InitialContext context = new InitialContext();

// lookup the queue object
Queue queue = (Queue) context.lookup("java:comp/env/queue/queue0");

// lookup the queue connection factory
QueueConnectionFactory conFactory = (QueueConnectionFactory) context
.lookup("java:comp/env/queue/connectionFactory");

// create a queue connection
QueueConnection queConn = conFactory.createQueueConnection();

// create a queue session
QueueSession queSession = queConn.createQueueSession(false,
Session.DUPS_OK_ACKNOWLEDGE);

// create a queue sender
QueueSender queSender = queSession.createSender(queue);
queSender.setDeliveryMode(DeliveryMode.NON_PERSISTENT);

// create a simple message to say "Hello World"
TextMessage message = queSession.createTextMessage("Hello World");

// send the message
queSender.send(message);

// print what we did
out.write("Message Sent: " + message.getText());

// close the queue connection
queConn.close();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}

/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}

}

======================================================

写一个消费者(Receive)servlet

package com.sun.jms;

import java.io.IOException;
import java.io.PrintWriter;

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.InitialContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.PrintWriter;

/**
* Servlet implementation class Receive
*/
@WebServlet("/Receive")
public class Receive extends HttpServlet {
private static final long serialVersionUID = 1L;

/**
* @see HttpServlet#HttpServlet()
*/
public Receive() {
super();
// TODO Auto-generated constructor stub
}

try {
// get the initial context
InitialContext context = new InitialContext();

// lookup the queue object
Queue queue = (Queue) context.lookup("java:comp/env/queue/queue0");

// lookup the queue connection factory
QueueConnectionFactory conFactory = (QueueConnectionFactory) context
.lookup("java:comp/env/queue/connectionFactory");

// create a queue connection
QueueConnection queConn = conFactory.createQueueConnection();

// create a queue session
QueueSession queSession = queConn.createQueueSession(false,
Session.AUTO_ACKNOWLEDGE);

// create a queue receiver
QueueReceiver queReceiver = queSession.createReceiver(queue);

// start the connection
queConn.start();

// receive a message
TextMessage message = (TextMessage) queReceiver.receive();

// print the message
out.write("Message Received: " + message.getText());

// close the queue connection
queConn.close();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

}

=====================================================

配置tomcat的tomcatconfcontext.xml

=======================================================

启动ActiveMQ 进入http://localhost:8161/admin/queues.jsp

默认用户名和密码是admin

运行后效果: