Java 向消息驱动bean发送消息并从中获取响应
我试图对消息驱动bean做出响应,但由于未知原因,我无法使通信正常工作 这是有状态的bean。它发送一个对象消息,并在创建一个临时队列后接收响应Java 向消息驱动bean发送消息并从中获取响应,java,jms,message-queue,Java,Jms,Message Queue,我试图对消息驱动bean做出响应,但由于未知原因,我无法使通信正常工作 这是有状态的bean。它发送一个对象消息,并在创建一个临时队列后接收响应 @Stateful public class BookingManagerBean implements BookingManagerBeanInterface { @Inject @JMSConnectionFactory("jms/reservationProcessorQueueFactory") private JMS
@Stateful
public class BookingManagerBean implements BookingManagerBeanInterface
{
@Inject
@JMSConnectionFactory("jms/reservationProcessorQueueFactory")
private JMSContext context;
@Resource(mappedName = "jms/bookingProcessorQueueReceiver")
private Queue bookingProcessorQueueReceiver;
private Queue tempQueue;
private JMSProducer messageProducer = null;
private JMSConsumer messageConsumer = null;
private String id_reservation = null;
private Map<String,Object> map;
@Override
public String purchase()
{
try
{
sendMessageToBookingProcessorBean(object1, object2); // invia il messaggio contenente la prenotazione e il numero di punti utilizzati
receiveMessageFromBookingProcessorBean(); // ricevi il messaggio dal MDB
}
catch(JMSException jmse)
{
System.err.println("An error occured " + jmse.toString());
return (id_reservation);
}
return id_reservation;
}
private void sendMessageToBookingProcessorBean(Object object1, int object2) throws JMSException
{
messageProducer = context.createProducer();
messageProducer.send(bookingProcessorQueueReceiver,createMessageForBookingProcessorBean(object1, object2));
}
private Message createMessageForBookingProcessorBean(Object object1, int object2) throws JMSException
{
ObjectMessage msg = context.createObjectMessage();
tempQueue = context.createTemporaryQueue(); //create la queue temporanea dove sarà inviata la risposta
messageConsumer = context.createConsumer(tempQueue);
msg.setJMSReplyTo(tempQueue);
map = new HashMap<>();
map.put("object1", object1);
map.put("object2", object2);
msg.setObject((Serializable) map);
return msg;
}
private void receiveMessageFromBookingProcessorBean() throws JMSException
{
Message msg = messageConsumer.receive();
if(msg instanceof TextMessage)
{
TextMessage string = (TextMessage)msg;
this.id_reservation = string.getText();
}
}
}
@Stateful
公共类BookingManagerBean实现BookingManagerBean接口
{
@注入
@JMSConnectionFactory(“jms/reservationProcessorQueueFactory”)
私有JMSContext上下文;
@资源(mappedName=“jms/bookingProcessorQueueReceiver”)
专用队列预订处理器QueueReceiver;
专用队列;
私有JMSProducer messageProducer=null;
私有JMSConsumer messageConsumer=null;
私有字符串id_reservation=null;
私人地图;
@凌驾
公共字符串购买()
{
尝试
{
sendMessageToBookingProcessorBean(object1,object2);//因应信息内容和使用价值
receiveMessageFromBookingProcessorBean();//ricevi il messaggio dal MDB
}
捕获(jmse)
{
System.err.println(“发生错误”+jmse.toString());
返回(id_预订);
}
返回id\u预约;
}
私有void sendMessageToBookingProcessorBean(对象object1,int object2)引发JMSException
{
messageProducer=context.createProducer();
send(bookingProcessorQueueReceiver,createMessageForBookingProcessorBean(object1,object2));
}
私有消息createMessageForBookingProcessorBean(对象object1,int object2)引发JMSException
{
ObjectMessage msg=context.createObjectMessage();
tempQueue=context.createTemporaryQueue();//创建临时队列
messageConsumer=context.createConsumer(tempQueue);
msg.setJMSReplyTo(tempQueue);
map=新的HashMap();
map.put(“object1”,object1);
map.put(“object2”,object2);
msg.setObject((可序列化)映射);
返回味精;
}
private void receiveMessageFromBookingProcessorBean()引发JMSExException
{
Message msg=messageConsumer.receive();
if(消息实例of TextMessage)
{
text消息字符串=(text消息)消息;
this.id_reservation=string.getText();
}
}
}
这就是消息驱动bean
@MessageDriven(mappedName = "jms/bookingProcessorQueueReceiver",
activationConfig = {@ActivationConfigProperty(propertyName = "acknowledgeMode", propertyValue = "Auto-acknowledge"),
@ActivationConfigProperty(propertyName = "destinationType", propertyValue = "javax.jms.Queue")
})
public class BookingProcessorBean implements MessageListener
{
@PersistenceContext
private EntityManager em;
@Inject
@JMSConnectionFactory("jms/reservationProcessorQueueFactory")
private JMSContext context;
@Override
public void onMessage(Message message)
{
try
{
ObjectMessage om = (ObjectMessage) message;
map = (HashMap<String,Object>) om.getObject();
System.out.println("Processing reservation...");
sendIdReversationToBookingManagerBean(om.getJMSReplyTo(), "message response"); //prende la destinazione temporanea ed il messaggio
}
catch(UnsupportedEncodingException uee)
{
System.err.println("An error occured during the sending of the confirmation mail to " + reserv.getUsername().getEmail());
}
catch(MessagingException me)
{
System.err.println("An error occured during the sending of the email to " + reserv.getUsername().getEmail());
}
catch(JMSException e)
{
System.err.println("An error occured during the processing of the booking " + reserv.getId());
}
}
private Message createMessageForBookingManagerBean(String message) throws JMSException
{
TextMessage msg = context.createTextMessage();
msg.setText(message);
return msg;
}
private void sendIdReversationToBookingManagerBean(Destination tempReceiverDestination, String message) throws JMSException
{
JMSProducer messageProducer = context.createProducer();
messageProducer.send(tempReceiverDestination, createMessageForBookingManagerBean(id));
}
}
@MessageDriven(mappedName=“jms/bookingProcessorQueueReceiver”,
activationConfig={@ActivationConfigProperty(propertyName=“acknowledgeMode”,propertyValue=“Auto acknowledge”),
@ActivationConfigProperty(propertyName=“destinationType”,propertyValue=“javax.jms.Queue”)
})
公共类BookingProcessorBean实现MessageListener
{
@持久上下文
私人实体管理者;
@注入
@JMSConnectionFactory(“jms/reservationProcessorQueueFactory”)
私有JMSContext上下文;
@凌驾
消息(消息消息)上的公共无效
{
尝试
{
ObjectMessage om=(ObjectMessage)消息;
map=(HashMap)om.getObject();
System.out.println(“处理预订…”);
SendIDReversationBookingManagerBean(om.getJMSReplyTo(),“消息响应”);//临时消息
}
捕获(不支持的编码异常uee)
{
System.err.println(“向“+reserv.getUsername().getEmail()”发送确认邮件时出错);
}
捕获(消息例外我)
{
System.err.println(“向“+reserv.getUsername().getEmail()”发送电子邮件时出错);
}
捕获(JME)
{
System.err.println(“预订处理过程中发生错误”+reserv.getId());
}
}
私有消息createMessageForBookingManagerBean(字符串消息)引发JMSExException
{
TextMessage msg=context.createTextMessage();
msg.setText(消息);
返回味精;
}
private void SendIDReversationBookingManagerBean(目标TempReceiveDestination,字符串消息)引发JMSExException
{
JMSProducer messageProducer=context.createProducer();
messageProducer.send(tempReceiverDestination,createMessageForBookingManagerBean(id));
}
}
我试着做了一些调试,我注意到程序卡在了receive方法中。我很确定有些东西不起作用。您能帮助我吗?我使用了setJMSReplyTo方法来确保我在临时队列中得到响应mdb中的代码没有被删除。。。