Esempio n. 1
0
  public static void main(String[] args) {
    try { // Create and start connection
      InitialContext ctx = new InitialContext();
      QueueConnectionFactory f = (QueueConnectionFactory) ctx.lookup("myQueueConnectionFactory");
      QueueConnection con = f.createQueueConnection();
      con.start();
      // 2) create queue session
      QueueSession ses = con.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
      // 3) get the Queue object
      Queue t = (Queue) ctx.lookup("myQueue");
      // 4)create QueueSender object
      QueueSender sender = ses.createSender(t);
      // 5) create TextMessage object
      TextMessage msg = ses.createTextMessage();

      // 6) write message
      BufferedReader b = new BufferedReader(new InputStreamReader(System.in));
      while (true) {
        System.out.println("Enter Msg, end to terminate:");
        String s = b.readLine();
        if (s.equals("end")) break;
        msg.setText(s);
        // 7) send message
        sender.send(msg);
        System.out.println("Message successfully sent.");
      }
      // 8) connection close
      con.close();
    } catch (Exception e) {
      System.out.println(e);
    }
  }
  public void onMessage(Message inMessage) {
    TextMessage msg = null;

    try {
      if (inMessage instanceof TextMessage) {
        msg = (TextMessage) inMessage;
        System.out.println("MESSAGE BEAN: Message received: " + msg.getText());
        long sleepTime = msg.getLongProperty("sleeptime");
        System.out.println("Sleeping for : " + sleepTime + " milli seconds ");
        Thread.sleep(sleepTime);
        queueConnection = queueConnectionFactory.createQueueConnection();
        queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
        queueSender = queueSession.createSender(queue);
        TextMessage message = queueSession.createTextMessage();

        message.setText("REPLIED:" + msg.getText());
        message.setIntProperty("replyid", msg.getIntProperty("id"));
        System.out.println("Sending message: " + message.getText());
        queueSender.send(message);
      } else {
        System.out.println("Message of wrong type: " + inMessage.getClass().getName());
      }
    } catch (JMSException e) {
      e.printStackTrace();
    } catch (Throwable te) {
      te.printStackTrace();
    } finally {
      try {
        queueSession.close();
        queueConnection.close();
      } catch (Exception e) {
      }
    }
  } // onMessage
Esempio n. 3
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  /**
   * Wait for 'count' messages on controlQueue before continuing. Called by a publisher to make sure
   * that subscribers have started before it begins publishing messages.
   *
   * <p>If controlQueue doesn't exist, the method throws an exception.
   *
   * @param prefix prefix (publisher or subscriber) to be displayed
   * @param controlQueueName name of control queue
   * @param count number of messages to receive
   */
  public static void receiveSynchronizeMessages(String prefix, String controlQueueName, int count)
      throws Exception {
    QueueConnectionFactory queueConnectionFactory = null;
    QueueConnection queueConnection = null;
    QueueSession queueSession = null;
    Queue controlQueue = null;
    QueueReceiver queueReceiver = null;

    try {
      queueConnectionFactory = SampleUtilities.getQueueConnectionFactory();
      queueConnection = queueConnectionFactory.createQueueConnection();
      queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
      controlQueue = getQueue(controlQueueName, queueSession);
      queueConnection.start();
    } catch (Exception e) {
      System.out.println("Connection problem: " + e.toString());
      if (queueConnection != null) {
        try {
          queueConnection.close();
        } catch (JMSException ee) {
        }
      }
      throw e;
    }

    try {
      System.out.println(
          prefix
              + "Receiving synchronize messages from "
              + controlQueueName
              + "; count = "
              + count);
      queueReceiver = queueSession.createReceiver(controlQueue);
      while (count > 0) {
        queueReceiver.receive();
        count--;
        System.out.println(prefix + "Received synchronize message; expect " + count + " more");
      }
    } catch (JMSException e) {
      System.out.println("Exception occurred: " + e.toString());
      throw e;
    } finally {
      if (queueConnection != null) {
        try {
          queueConnection.close();
        } catch (JMSException e) {
        }
      }
    }
  }
Esempio n. 4
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  public QLender(String queuecf, String requestQueue) {
    try {
      // Connect to the provider and get the JMS connection
      Context ctx = new InitialContext();
      QueueConnectionFactory qFactory = (QueueConnectionFactory) ctx.lookup(queuecf);
      qConnect = qFactory.createQueueConnection();

      // Create the JMS Session
      qSession = qConnect.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);

      // Lookup the request queue
      requestQ = (Queue) ctx.lookup(requestQueue);

      // Now that setup is complete, start the Connection
      qConnect.start();

      // Create the message listener
      QueueReceiver qReceiver = qSession.createReceiver(requestQ);
      qReceiver.setMessageListener(this);

      System.out.println("Waiting for loan requests...");

    } catch (JMSException jmse) {
      jmse.printStackTrace();
      System.exit(1);
    } catch (NamingException jne) {
      jne.printStackTrace();
      System.exit(1);
    }
  }
Esempio n. 5
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  public void onMessage(Message message) {

    try {
      boolean accepted = false;

      // Get the data from the message
      MapMessage msg = (MapMessage) message;
      double salary = msg.getDouble("Salary");
      double loanAmt = msg.getDouble("LoanAmount");

      // Determine whether to accept or decline the loan
      if (loanAmt < 200000) {
        accepted = (salary / loanAmt) > .25;
      } else {
        accepted = (salary / loanAmt) > .33;
      }
      System.out.println(
          ""
              + "Percent = "
              + (salary / loanAmt)
              + ", loan is "
              + (accepted ? "Accepted!" : "Declined"));

      // Send the results back to the borrower
      TextMessage tmsg = qSession.createTextMessage();
      tmsg.setText(accepted ? "Accepted!" : "Declined");

      // correlation
      tmsg.setJMSCorrelationID(message.getJMSMessageID());

      // Create the sender and send the message
      qSender = qSession.createSender((Queue) message.getJMSReplyTo());
      qSender.send(tmsg);

      System.out.println("\nWaiting for loan requests...");

    } catch (JMSException jmse) {
      jmse.printStackTrace();
      System.exit(1);
    } catch (Exception jmse) {
      jmse.printStackTrace();
      System.exit(1);
    }
  }
Esempio n. 6
0
  public void onMessage(Message message) {

    try {
      boolean accepted = false;

      // Get the data from the message
      MapMessage msg = (MapMessage) message;
      double salary = msg.getDouble("Salary");
      double expAmt = msg.getDouble("Years’ experience");

      // Determine whether to accept or decline the loan
      if (expAmt < 200000) {
        accepted = (salary / expAmt) > .25;
      } else {
        accepted = (salary / expAmt) > .33;
      }
      if (salary <= 32000) {
        accepted = true;
      } else {
        if (expAmt == 0) accepted = false;
        else accepted = ((double) (expAmt - 32000) / expAmt) < 3000.;
      }
      System.out.println(" Salary proposal is " + (accepted ? "Accepted!" : "Declined"));

      // Send the results back to the borrower
      TextMessage tmsg = qSession.createTextMessage();
      tmsg.setText(accepted ? "Accepted!" : "Declined");
      tmsg.setJMSCorrelationID(message.getJMSMessageID());

      // Create the sender and send the message
      QueueSender qSender = qSession.createSender((Queue) message.getJMSReplyTo());
      qSender.send(tmsg);

      System.out.println("\nWaiting for salary requests...");

    } catch (JMSException jmse) {
      jmse.printStackTrace();
      System.exit(1);
    } catch (Exception jmse) {
      jmse.printStackTrace();
      System.exit(1);
    }
  }
  public static void main(String[] args) {
    try {
      QueueConnectionFactory queueConnectionFactory;
      QueueConnection queueConnection;
      QueueSession queueSession;
      QueueReceiver queueReceiver;
      Queue queue;
      TextMessage msg;

      // JNDI InitialContextを作成します
      InitialContext ctx = new InitialContext();
      // Connection FactoryとQueueをLook upします
      queueConnectionFactory = (QueueConnectionFactory) ctx.lookup(JMS_FACTORY);
      queue = (Queue) ctx.lookup(QUEUE);

      // コネクションを作成
      queueConnection = queueConnectionFactory.createQueueConnection();
      // セッションを作成
      queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
      // キューレシーバーを作成
      queueReceiver = queueSession.createReceiver(queue);
      // メッセージの配送をスタート
      queueConnection.start();
      // メッセージの受信
      while (true) {
        Message m = queueReceiver.receive(1);
        if (m != null) {
          if (m instanceof TextMessage) {
            msg = (TextMessage) m;
            System.out.println(msg.getText());
          } else {
            break;
          }
        }
      }
      // 接続を切断
      queueReceiver.close();
      queueSession.close();
      queueConnection.close();
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
Esempio n. 8
0
  /**
   * Send a message to controlQueue. Called by a subscriber to notify a publisher that it is ready
   * to receive messages.
   *
   * <p>If controlQueue doesn't exist, the method throws an exception.
   *
   * @param prefix prefix (publisher or subscriber) to be displayed
   * @param controlQueueName name of control queue
   */
  public static void sendSynchronizeMessage(String prefix, String controlQueueName)
      throws Exception {
    QueueConnectionFactory queueConnectionFactory = null;
    QueueConnection queueConnection = null;
    QueueSession queueSession = null;
    Queue controlQueue = null;
    QueueSender queueSender = null;
    TextMessage message = null;

    try {
      queueConnectionFactory = SampleUtilities.getQueueConnectionFactory();
      queueConnection = queueConnectionFactory.createQueueConnection();
      queueSession = queueConnection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
      controlQueue = getQueue(controlQueueName, queueSession);
    } catch (Exception e) {
      System.out.println("Connection problem: " + e.toString());
      if (queueConnection != null) {
        try {
          queueConnection.close();
        } catch (JMSException ee) {
        }
      }
      throw e;
    }

    try {
      queueSender = queueSession.createSender(controlQueue);
      message = queueSession.createTextMessage();
      message.setText("synchronize");
      System.out.println(prefix + "Sending synchronize message to " + controlQueueName);
      queueSender.send(message);
    } catch (JMSException e) {
      System.out.println("Exception occurred: " + e.toString());
      throw e;
    } finally {
      if (queueConnection != null) {
        try {
          queueConnection.close();
        } catch (JMSException e) {
        }
      }
    }
  }