I want to connect to my Glassfish Server at XX.XX.XX.XX:XXXX which is running on a ubuntu machine on our Server.
I want to send messages and then receive them.
My Receiver looks like this:
public JMS_Topic_Receiver(){
init();
}
public List<TextMessage> getCurrentMessages() { return _currentMessages; }
private void init(){
env.put("java.naming.factory.initial", "com.sun.enterprise.naming.SerialInitContextFactory");
env.put("org.omg.CORBA.ORBInitialHost", "10.10.32.14");
env.put("org.omg.CORBA.ORBInitialPort", "8080");
try {
ctx = new InitialContext(env); // NamingException
} catch (NamingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void subscribeTopic(String topicName, String userCredentials) {
try {
TopicConnectionFactory topicConnectionFactory = (TopicConnectionFactory) ctx.lookup("myTopicConnectionFactory");
TopicConnection topicConnection = topicConnectionFactory.createTopicConnection();
try {
String temp = InetAddress.getLocalHost().getHostName();
topicConnection.setClientID(temp);
} catch (UnknownHostException e) {
e.printStackTrace();
}
TopicSession topicSession = topicConnection.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
Topic topic = (Topic) ctx.lookup(topicName);
topicConnection.start();
TopicSubscriber topicSubscriber = topicSession.createDurableSubscriber(topic, userCredentials);
topicSubscriber.setMessageListener(new MyMessageListener());
}
catch(NamingException | JMSException ex)
{
ex.printStackTrace();
}
}
And my Sender looks like this:
public JMS_Topic_Sender(){
init();
}
private void init(){
env.put("java.naming.factory.initial","com.sun.enterprise.naming.SerialInitContextFactory");
env.put("org.omg.CORBA.ORBHost","10.10.32.14");
env.put("org.omg.CORBA.ORBPort","8080");
try {
ctx = new InitialContext(env);
} catch (NamingException e) {
e.printStackTrace();
}
}
public void sendMessage(String message, String topicName) {
try {
TopicConnectionFactory topicConnectionFactory = (TopicConnectionFactory) ctx.lookup("myTopicConnectionFactory");
if (topicConnectionFactory != null) {
TopicConnection topicConnection = topicConnectionFactory.createTopicConnection();
TopicSession topicSession = topicConnection.createTopicSession(false, Session.AUTO_ACKNOWLEDGE);
Topic topic = (Topic) ctx.lookup(topicName);
topicConnection.start();
TopicPublisher topicPublisher = topicSession.createPublisher(topic);
TextMessage tm = topicSession.createTextMessage(message);
topicPublisher.send(tm);
topicSession.close();
topicConnection.stop();
topicConnection.close();
}
} catch (NamingException e) {
e.printStackTrace();
} catch (JMSException e) {
e.printStackTrace();
}
}
I got most of this code from various tutorials online.
Now when I want to do the lookup aka. -> ctx.lookup("myTopicConnectionFactory");
I get all sorts of errors thrown:
INFO: HHH000397: Using ASTQueryTranslatorFactory
org.omg.CORBA.COMM_FAILURE: FEIN: 00410008: Connection abort vmcid: OMG minor code: 8 completed: Maybe
javax.naming.NamingException: Lookup failed for 'myTopicConnectionFactory' in SerialContext ........
My question here is, how do I do the lookup correctly?
My guess is that my Propertys (env) are incorrect and I need to change thouse, but I dont know to what?
Also, it works if i run my Glassfish localy on my own Computers localhost.
When im using localhost as adress and 8080 as port.
Related
I'm working with the Renci SSH.Net library on a WPF application and I'm having an issue with using the SFTP client. When the user tries to connect to download some files from the SFTP server he gets the message shown below:
Server response does not contain ssh protocol identification
It doesn't appear to be something specific with the server as I'm able to connect and download the files just fine on my development desktop and a secondary laptop. The same application is able to connect over SSH and run commands without issue, it's just the SFTP connection that appears to be the problem. I'm looking for a little guidance as to where to begin troubleshooting this.
Code for SFTP shown below:
void DownloadPlogs()
{
try
{
SftpClient SFTP;
if (GV.UseCustomPort && GV.CustomPort > 0 && GV.CustomPort < 65535)
{
SFTP = new SftpClient(GV.IpAddress, GV.CustomPort, GV.Username, GV.Password);
}
else
{
SFTP = new SftpClient(GV.IpAddress, 22, GV.Username, "");
}
SFTP.Connect();
DownloadDirectory(SFTP, "/PLOG", Directory.GetCurrentDirectory() + #"\PLOG");
ZipFile.CreateFromDirectory("PLOG", String.Format("{0} - {1} PLOGS.zip", GV.IpAddress, DateTime.Now.ToString("yyyyMMddHHmmss")));
Directory.Delete(Directory.GetCurrentDirectory() + #"\PLOG", true);
SFTP.Disconnect();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error Getting PLOGS");
}
}
void DownloadDirectory(SftpClient Client, string Source, string Destination)
{
var Files = Client.ListDirectory(Source);
foreach (var File in Files)
{
if (!File.IsDirectory && !File.IsSymbolicLink)
{
DownloadFile(Client, File, Destination);
}
else if (File.IsSymbolicLink)
{
//Ignore
}
else if (File.Name != "." && File.Name != "..")
{
var Dir = Directory.CreateDirectory(System.IO.Path.Combine(Destination, File.Name));
DownloadDirectory(Client, File.FullName, Dir.FullName);
}
}
}
void DownloadFile(SftpClient Client, Renci.SshNet.Sftp.SftpFile File, string Directory)
{
using (Stream FileStream = System.IO.File.OpenWrite(System.IO.Path.Combine(Directory, File.Name)))
{
Client.DownloadFile(File.FullName, FileStream);
}
}
Code for SSH below:
public SshConnection(string Host, int Port, string Username, string Password)
{
myClient = new SshClient(Host, Port, Username, Password);
myClient.KeepAliveInterval = new TimeSpan(0, 0, 5);
myClient.HostKeyReceived += myClient_HostKeyReceived;
myClient.ErrorOccurred += myClient_ErrorOccurred;
}
void myClient_ErrorOccurred(object sender, Renci.SshNet.Common.ExceptionEventArgs e)
{
MessageBox.Show(e.Exception.Message, "SSH Error Occurred");
}
void myClient_HostKeyReceived(object sender, Renci.SshNet.Common.HostKeyEventArgs e)
{
e.CanTrust = true;
}
public async void Connect()
{
Task T = new Task(() =>
{
try
{
myClient.Connect();
}
catch (System.Net.Sockets.SocketException)
{
MessageBox.Show("Invalid IP Address or Hostname", "SSH Connection Error");
}
catch (Renci.SshNet.Common.SshAuthenticationException ex)
{
MessageBox.Show(ex.Message, "SSH Authentication Error");
}
catch (Exception ex)
{
MessageBox.Show(ex.StackTrace, ex.Message);
MessageBox.Show(ex.GetType().ToString());
OnConnection(this, new ConnectEventArgs(myClient.IsConnected));
}
});
T.Start();
await T;
if (T.IsCompleted)
{
OnConnection(this, new ConnectEventArgs(myClient.IsConnected));
}
}
public void Disconnect()
{
try
{
myClient.Disconnect();
OnConnection(this, new ConnectEventArgs(myClient.IsConnected));
}
catch (Exception ex)
{
MessageBox.Show(ex.StackTrace, ex.Message);
}
}
public void SendData(string Data)
{
try
{
if (Data.EndsWith("\r\n"))
{
RunCommandAsync(Data, SshCommandRx);
}
else
{
RunCommandAsync(String.Format("{0}\r\n",Data), SshCommandRx);
}
//SshCommand Command = myClient.RunCommand(Data);
//OnDataReceived(this, new DataEventArgs(Command.Result));
}
catch (Exception ex)
{
MessageBox.Show(ex.StackTrace, ex.Message);
}
}
private async void RunCommandAsync(String Data, SshCommandCallback Callback)
{
Task<SshCommand> T = new Task<SshCommand>(() =>
{
try
{
SshCommand Command = myClient.RunCommand(Data);
return Command;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, ex.GetType().ToString());
return null;
}
});
T.Start();
await T;
if (T.IsCompleted)
{
Callback(this, T.Result);
}
}
private void SshCommandRx(SshConnection C, SshCommand Command)
{
if (Command != null)
{
string Rx = Command.Result;
//if (Rx.StartsWith(Command.CommandText))
//{
// Rx = Rx.Remove(0, Command.CommandText.Length);
//}
while (Rx.EndsWith("\r\n\r\n") == false)
{
Rx += "\r\n";
}
OnDataReceived(this, new DataEventArgs(Rx));
}
}
I solve it for my self only with connections retrying attempts. Didn't find what exactly the issue is, but have this connection issue many times.
Example:
int attempts = 0;
do
{
try
{
client.Connect();
}
catch (Renci.SshNet.Common.SshConnectionException e)
{
attempts++;
}
} while (attempts < _connectiontRetryAttempts && !client.IsConnected);
I experienced the same odd error message when attempting to connect to a SFTP server while using the SSH.NET library in a program on the server. The problem did not appear while testing from my development machine.
The solution was to have our server team add the IP address of the server into the hosts.allow file on the SFTP Linux server.
How do I upload a file public and get link ? I am using Dropbox Java core api. Here.
public static void Yukle(File file) throws DbxException, IOException {
FileInputStream fileInputStream = new FileInputStream(file);
InputStream inputStream = fileInputStream;
try (InputStream in = new FileInputStream(file)) {
UploadBuilder metadata = clientV2.files().uploadBuilder("/"+file.getName());
metadata.withMode(WriteMode.OVERWRITE);
metadata.withClientModified(new Date());
metadata.withAutorename(false);
metadata.uploadAndFinish(in);
System.out.println(clientV2.files());
}
}
I use the following code to upload files to DropBox:
public DropboxAPI.Entry uploadFile(final String fullPath, final InputStream is, final long length, final boolean replaceFile) {
final DropboxAPI.Entry[] rev = new DropboxAPI.Entry[1];
rev[0] = null;
Thread t = new Thread(new Runnable() {
public void run() {
try {
if (replaceFile == true) {
try {
mDBApi.delete(fullPath);
} catch (Exception e) {
e.printStackTrace();
}
//! ReplaceFile is always true
rev[0] = mDBApi.putFile(fullPath, is, length, null, true, null);
} else {
rev[0] = mDBApi.putFile(fullPath, is, length, null, null);
}
} catch (DropboxException e) {
e.printStackTrace();
}
}
});
t.start();
try {
t.join();
} catch (InterruptedException e) {
e.printStackTrace();
}
return rev[0];
}
I am trying to use SCAN http://redis.io/commands/scan to iterate over all the keys present in redis. But the Redis template provided by spring do not have any scan() method. Is there any trick to use the above?
Thanks
You can use a RedisCallback on RedisOperations to do so.
redisTemplate.execute(new RedisCallback<Iterable<byte[]>>() {
#Override
public Iterable<byte[]> doInRedis(RedisConnection connection) throws DataAccessException {
List<byte[]> binaryKeys = new ArrayList<byte[]>();
Cursor<byte[]> cursor = connection.scan(ScanOptions.NONE);
while (cursor.hasNext()) {
binaryKeys.add(cursor.next());
}
try {
cursor.close();
} catch (IOException e) {
// do something meaningful
}
return binaryKeys;
}
});
Set<String> keys = (Set<String>) redisTemplate.execute((RedisCallback<Set<String>>) connection -> {
Cursor<byte[]> cursor = null;
Set<String> keysTmp = new HashSet<>();
try {
cursor = connection.scan(new ScanOptions.ScanOptionsBuilder().match(keyPrefix + "*").count(10000).build());
while (cursor.hasNext()) {
keysTmp.add(new String(cursor.next()));
}
} catch (Exception e) {
e.printStackTrace();
} finally {
if (Objects.nonNull(cursor) && !cursor.isClosed()) {
try {
cursor.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return keysTmp;
});
I am testing an app that makes voice recognition, but now I am getting this error:
11-04 16:25:58.249: E/ServerConnectorImpl(13716): Failed to create TCP connection
11-04 16:25:58.249: E/ServerConnectorImpl(13716): com.google.android.voicesearch.speechservice.ConnectionException: Failed to establish connection
11-04 16:25:58.249: E/ServerConnectorImpl(13716): at com.google.android.voicesearch.tcp.TcpConnectionImpl.<init>(TcpConnectionImpl.java:87)
....
Here is my code:
sr = SpeechRecognizer.createSpeechRecognizer(getApplicationContext());
MyRecognition listener = new MyRecognition();
sr.setRecognitionListener(listener);
Class MyRecognition that implements the methods from RecognitionListener
class MyRecognition implements RecognitionListener{
public void onBeginningOfSpeech() {
}
public void onBufferReceived(byte[] buffer) {
}
public void onEndOfSpeech() {
}
public void onError(int error) {
MediaPlayer mp = new MediaPlayer();
AssetFileDescriptor asset;
try {
asset = getAssets().openFd("error.mp3");
mp.setDataSource(asset.getFileDescriptor(), asset.getStartOffset(), asset.getLength());
asset.close();
mp.prepare();
mp.start();
mp.setOnCompletionListener(AddActivity.this);
} catch (IOException e) {
e.printStackTrace();
}
}
....
public void onResults(Bundle results) {
....
}
....
}
The method that makes the voice recognition
private void reconheceVoz(final MediaPlayer mp){
try{
Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
intent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, "com.br.test");
intent.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 5);
sr.startListening(intent);
mp.release();
}
catch(Exception e){
Toast.makeText(AdicaoActivity.this, "Erro: " + e.getMessage(), Toast.LENGTH_SHORT).show();
}
}
This error occurs often? How can I treat it?
Thanks.
Hi all please give some basic about ActiveMQ with JMS for novice. And configuration steps also.
We are going to create a console based application using multithreading. So create an java project for console application.
Now follow these steps..........
Add javax.jms.jar, activemq-all-5.3.0.jar, log4j-1.2.15.jar to your project library.
(You can download all of above jar files from http://www.jarfinder.com/ .
create a file naming jndi.properties and paste these following texts .. ( Deatils for jndi.properties just Google it)
# START SNIPPET: jndi
java.naming.factory.initial = org.apache.activemq.jndi.ActiveMQInitialContextFactory
# use the following property to configure the default connector
java.naming.provider.url = tcp://localhost:61616
# use the following property to specify the JNDI name the connection factory
# should appear as.
#connectionFactoryNames = connectionFactory, queueConnectionFactory, topicConnectionFactry
connectionFactoryNames = connectionFactory, queueConnectionFactory, topicConnectionFactry
# register some queues in JNDI using the form
# queue.[jndiName] = [physicalName]
queue.MyQueue = example.MyQueue
# register some topics in JNDI using the form
# topic.[jndiName] = [physicalName]
topic.MyTopic = example.MyTopic
# END SNIPPET: jndi
Add JMSConsumer.java
import javax.jms.*;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
public class JMSConsumer implements Runnable{
private static final Log LOG = LogFactory.getLog(JMSConsumer.class);
public void run() {
Context jndiContext = null;
ConnectionFactory connectionFactory = null;
Connection connection = null;
Session session = null;
MessageConsumer consumer = null;
Destination destination = null;
String sourceName = null;
final int numMsgs;
sourceName= "MyQueue";
numMsgs = 1;
LOG.info("Source name is " + sourceName);
/*
* Create a JNDI API InitialContext object
*/
try {
jndiContext = new InitialContext();
} catch (NamingException e) {
LOG.info("Could not create JNDI API context: " + e.toString());
System.exit(1);
}
/*
* Look up connection factory and destination.
*/
try {
connectionFactory = (ConnectionFactory)jndiContext.lookup("queueConnectionFactory");
destination = (Destination)jndiContext.lookup(sourceName);
} catch (NamingException e) {
LOG.info("JNDI API lookup failed: " + e);
System.exit(1);
}
try {
connection = connectionFactory.createConnection();
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
consumer = session.createConsumer(destination);
connection.start();
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
MessageListener listener = new MyQueueMessageListener();
consumer.setMessageListener(listener );
//Let the thread run for some time so that the Consumer has suffcient time to consume the message
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} catch (JMSException e) {
LOG.info("Exception occurred: " + e);
} finally {
if (connection != null) {
try {
connection.close();
} catch (JMSException e) {
}
}
}
}
}
Add JMSProducer.java
import javax.jms.*;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
public class JMSProducer implements Runnable{
private static final Log LOG = LogFactory.getLog(JMSProducer.class);
public JMSProducer() {
}
//Run method implemented to run this as a thread.
public void run(){
Context jndiContext = null;
ConnectionFactory connectionFactory = null;
Connection connection = null;
Session session = null;
Destination destination = null;
MessageProducer producer = null;
String destinationName = null;
final int numMsgs;
destinationName = "MyQueue";
numMsgs = 5;
LOG.info("Destination name is " + destinationName);
/*
* Create a JNDI API InitialContext object
*/
try {
jndiContext = new InitialContext();
} catch (NamingException e) {
LOG.info("Could not create JNDI API context: " + e.toString());
System.exit(1);
}
/*
* Look up connection factory and destination.
*/
try {
connectionFactory = (ConnectionFactory)jndiContext.lookup("queueConnectionFactory");
destination = (Destination)jndiContext.lookup(destinationName);
} catch (NamingException e) {
LOG.info("JNDI API lookup failed: " + e);
System.exit(1);
}
/*
* Create connection. Create session from connection; false means
* session is not transacted.create producer, set the text message, set the co-relation id and send the message.
*/
try {
connection = connectionFactory.createConnection();
session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
producer = session.createProducer(destination);
TextMessage message = session.createTextMessage();
for (int i = 0; i
Add MyQueueMessageListener.java
import java.io.*;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import javax.jms.*;
public class MyQueueMessageListener implements MessageListener {
private static final Log LOG = LogFactory.getLog(MyQueueMessageListener.class);
/**
*
*/
public MyQueueMessageListener() {
// TODO Auto-generated constructor stub
}
/** (non-Javadoc)
* #see javax.jms.MessageListener#onMessage(javax.jms.Message)
* This is called on receving of a text message.
*/
public void onMessage(Message arg0) {
LOG.info("onMessage() called!");
if(arg0 instanceof TextMessage){
try {
//Print it out
System.out.println("Recieved message in listener: " + ((TextMessage)arg0).getText());
System.out.println("Co-Rel Id: " + ((TextMessage)arg0).getJMSCorrelationID());
try {
//Log it to a file
BufferedWriter outFile = new BufferedWriter(new FileWriter("MyQueueConsumer.txt"));
outFile.write("Recieved message in listener: " + ((TextMessage)arg0).getText());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} catch (JMSException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}else{
System.out.println("~~~~Listener : Error in message format~~~~");
}
}
}
Add SimpleApp.java
public class SimpleApp {
//Run the producer first, then the consumer
public static void main(String[] args) throws Exception {
runInNewthread(new JMSProducer());
runInNewthread(new JMSConsumer());
}
public static void runInNewthread(Runnable runnable) {
Thread brokerThread = new Thread(runnable);
brokerThread.setDaemon(false);
brokerThread.start();
}
}
Now run SimpleApp.java class.
All da best. Happy coding.
Here it is a simple junit test for ActiveMQ and Apache Camel. This two technologies works very good together.
If you want more details about the code, you can find a post in my blog:
http://ignaciosuay.com/unit-testing-active-mq/
public class ActiveMQTest extends CamelTestSupport {
#Override
protected CamelContext createCamelContext() throws Exception {
CamelContext camelContext = super.createCamelContext();
ConnectionFactory connectionFactory = new ActiveMQConnectionFactory("vm://localhost?broker.persistent=false");
camelContext.addComponent("activemq", jmsComponentClientAcknowledge(connectionFactory));
return camelContext;
}
#Override
protected RouteBuilder createRouteBuilder() throws Exception {
return new RouteBuilder() {
#Override
public void configure() throws Exception {
from("mina:tcp://localhost:6666?textline=true&sync=false")
.to("activemq:processHL7");
from("activemq:processHL7")
.to("mock:end");
}
};
}
#Test
public void testSendHL7Message() throws Exception {
MockEndpoint mock = getMockEndpoint("mock:end");
String m = "MSH|^~\\&|hl7Integration|hl7Integration|||||ADT^A01|||2.5|\r" +
"EVN|A01|20130617154644\r" +
"PID|1|465 306 5961||407623|Wood^Patrick^^^MR||19700101|1|\r" +
"PV1|1||Location||||||||||||||||261938_6_201306171546|||||||||||||||||||||||||20130617134644|";
mock.expectedBodiesReceived(m);
template.sendBody("mina:tcp://localhost:6666?textline=true&sync=false", m);
mock.assertIsSatisfied();
}