I need to receive messages of a queue, but this queue is inside in another machine(AWS instance) with https(https://www.mymachine.com/rabbitmq) but when I want to establish a connection to the queue I get a NullPointerException.
This is a part of code:
factory.setHost(https://www.mymachine.com/rabbitmq);
Connection connection = factory.newConnection();
channel = connection.createChannel();
channel.exchangeDeclare(EXCHANGE_NAME, "fanout");
queueName = channel.queueDeclare().getQueue();
channel.queueBind(queueName, EXCHANGE_NAME, "");
RabbitMQ, by default, does not use HTTP protocol, it uses AMQP protocol.
you have to change the factory.setHost with the ip or hostname.
factory.setHost(yourmachine)
if you need an SSL connection please read:
https://www.rabbitmq.com/ssl.html it is very clear tutorial.
Related
I'm so stuck about this.
I want to subscribe an ActiveMQ topic. ActiveMQ works on Centos machine, NOT LOCALHOST. I can consume messages with tcp, http protocols. Code;
public static void main(String[] args) throws JMSException {
PropertyUtils.loadPropertyFile();
Properties receiverProperties = PropertyUtils.getreceiverProperties();
// URL of the JMS server
String url = (String) receiverProperties.get("receiver.connection.url");
// Name of the queue we will receive messages from
String subject = (String) receiverProperties.get("receiver.topic.name");
// Getting JMS connection from the server
ConnectionFactory connectionFactory = new ActiveMQConnectionFactory(url);
Connection connection = connectionFactory.createConnection();
connection.start();
// Creating session for getting messages
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
// Getting the topic
Destination destination = session.createTopic(subject);
// MessageConsumer is used for receiving (consuming) messages
MessageConsumer consumer = session.createConsumer(destination);
Message message = null;
// Here we receive the message.
while (true) {
message = consumer.receive();
if (message instanceof TextMessage) {
TextMessage textMessage = (TextMessage) message;
System.out.println("Received message '" + textMessage.getText() + "'");
}
}
// We will be using TestMessage in our example. MessageProducer sent us a
// TextMessage
// so we must cast to it to get access to its .getText() method.
// connection.close();
}
I want to use wss protocol. This is a must for me. When I changed url with wss://host:port getting;
Could not create Transport. Reason: java.io.IOException: createTransport() method not implemented!
So I checked the alternatives. People figure this out with Stomp over WS. My first achievement is wss connection.
Any recommendation will be appreciated!
The exception you're seeing is expected because the OpenWire JMS client you're using doesn't support WebSocket connections, and it doesn't really need to. WebSocket connections are really only relevant for clients running in a limited environment like a web browser. Web browsers don't support running Java clients.
If you really want to use STOMP over WebSockets then you'll have to use a STOMP client implementation that supports WebSockets (most do).
Keep in mind that ActiveMQ is a broker. It does not supply clients for all the protocols it supports. It only provides a JMS client because it is required in order to implement JMS. STOMP, for example, is a standardized protocol and anyone can implement a client which will work with any broker implementing STOMP. There are lots of STOMP client implementations available written in many different languages for many different platforms. Any good search engine should help you find one to fit your needs.
I am using following code for creating publisher every time when i need to add message in topic i will run this , but some time it gives error
ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory("tcp://" + ip + ":" + port );
connection = connectionFactory.createConnection();
connection.setClientID(publisherName);
PooledConnectionFactory pf = new PooledConnectionFactory(connectionFactory);
pf.setMaxConnections(1000);
Session session = connection.createSession(false,session.AUTO_ACKNOWLEDGE);
Topic topic = session.createTopic(TopicName);
MessageProducer messageProducer = session.createProducer(topic);
Error:
javax.jms.InvalidClientIDException: Broker: localhost - Client: AthenaPublisher already connected from tcp://127.0.0.1:44448
Using a pool when setting the client ID will inevitably lead to such errors as you can have only one connection with a given client ID connected to the broker at any given time. In your case you are configuring the pool for 1000 pooled connections so it will happen pretty often that a new connection will be created and the error you've given will be produced. You need to either not use pooling or use a pool with only 1 pooled connection that shares session level resources with you code.
is it possible to establish rabbitMQ connection with javax.jms (not using rabbitMQ jms client/ java client )? if yes how (not with springboot).
You either need to use the driver or write your own driver. You should not expect anyone here to write it for you. What have you tried?
Yes it's possible. RabbitMQ provides a class implementing JMS Connection factory com.rabbitmq.client.ConnectionFactory:
ConnectionFactory connectionFactory = new Connection().newConnection();
// create a Connection
connection = connectionFactory.createConnection();
connection.setClientID(clientId);
// create a Session
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
// create the Topic from which messages will be received
Topic topic = session.createTopic(topicName);
// create a MessageConsumer for receiving messages
messageConsumer = session.createConsumer(topic);
// start the connection in order to receive messages
connection.start();
Except for the first line (Factory creation), this is pure JMS code.
I have installed IBMMQ 9.0 in windows running in virtualbox in my local and I have sample java code sending message to MQ.
here is the java code
MQQueueConnectionFactory cf = new MQQueueConnectionFactory();
cf.setHostName(MY_IP);
cf.setPort(1417);
cf.setTransportType(WMQConstants.WMQ_CM_CLIENT);
cf.setQueueManager("QM1_TEST");
cf.setChannel("QM1_TEST.CH");
MQQueueConnection connection = (MQQueueConnection)
cf.createQueueConnection();
MQQueueSession session = (MQQueueSession)
connection.createQueueSession(false, Session.AUTO_ACKNOWLEDGE);
MQQueue queue = (MQQueue) session.createQueue("queue:///QUEUE_TEST");
MQQueueSender sender = (MQQueueSender) session.createSender(queue);
String message = "Test Message";
TextMessage textMessage = (TextMessage)
session.createTextMessage(message);
connection.start();
sender.send(textMessage);
The program receives this error.
com.ibm.msg.client.jms.DetailedJMSSecurityException: JMSWMQ2013: The
security authentication was not valid that was supplied for QueueManager
'QM1_TEST' with connection mode 'Client' and host name '192.168.0.24(1417)'.
Please check if the supplied username and password are correct on the
QueueManager to which you are connecting. at
com.ibm.msg.client.wmq.common.internal.Reason.reasonToException(Reason.java:531)
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:215)
at com.ibm.msg.client.wmq.internal.WMQConnection.<init>(WMQConnection.java:424)
at com.ibm.msg.client.wmq.factories.WMQConnectionFactory.createV7ProviderConnection(WMQConnectionFactory.java:8475)
at com.ibm.msg.client.wmq.factories.WMQConnectionFactory.createProviderConnection(WMQConnectionFactory.java:7815)
at com.ibm.msg.client.jms.admin.JmsConnectionFactoryImpl._createConnection(JmsConnectionFactoryImpl.java:303)
at com.ibm.msg.client.jms.admin.JmsConnectionFactoryImpl.createConnection(JmsConnectionFactoryImpl.java:236)
at com.ibm.mq.jms.MQConnectionFactory.createCommonConnection(MQConnectionFactory.java:6016)
at com.ibm.mq.jms.MQQueueConnectionFactory.createQueueConnection(MQQueueConnectionFactory.java:111)
at com.cwt.bpg.cbr.demo.ibm.mq.client.SendMessage.main(SendMessage.java:24)
Caused by: com.ibm.mq.MQException: JMSCMQ0001: IBM MQ call failed with compcode '2' ('MQCC_FAILED') reason '2035' ('MQRC_NOT_AUTHORIZED').
at com.ibm.msg.client.wmq.common.internal.Reason.createException(Reason.java:203)
... 8 more
Here is the log under my queue manager with significant details.
5/21/2018 16:42:46 - Process(4984.8) User(MUSR_MQADMIN) Program
(amqrmppa.exe) Host(MSEDGEWIN10) Installation(Installation1) VRMF(9.0.0.0)
QMgr(QM1_DEV) AMQ9776: Channel was blocked by userid
EXPLANATION:
The inbound channel 'QM1_DEV.CH' was blocked from address '10.xx.xx.xx'
because the active values of the channel were mapped to a userid which
should be blocked. The active values of the channel were 'MCAUSER(IEUser)
CLNTUSER(IEUser) ADDRESS(LWPHL1U012FXP)'
You are not providing a user and password, your are connecting with the default user identity.
QueueConnection createQueueConnection()
Creates a queue connection with default user identity.
You can either provide credentials:
QueueConnection createQueueConnection(String userid,String password)
By default the userid and password for any user in the mqm group on the MQ broker will have access to the queue managers.
The IBM MQ docs also have instructions for disabling security altogether.
The JMS Hello World example shows producers and consumers sending and consuming messages; this is how they seem to create the connection:
ConnectionFactory cf = new com.sun.messaging.ConnectionFactory();
Connection connection = cf.createConnection();
How specify the address and parameters of the remote JMS server?
I want to create an encrypted and compressed connection to an OpenMQ server that is running on another machine. Ideally I would like to use both client and server authentication.
This post seems to provide an example using JMS server address.
This is how it creates a connection. They provide the address and also username and password (admin).
String addressList = "http://127.0.0.1:8080/imqhttp/tunnel";
com.sun.messaging.TopicConnectionFactory topicConnectionFactory = new com.sun.messaging.TopicConnectionFactory();
topicConnectionFactory.setProperty(com.sun.messaging.ConnectionConfiguration.imqAddressList, addressList);
javax.jms.Topic top;
javax.jms.Connection con = topicConnectionFactory.createTopicConnection("admin", "admin");