@Override
public void notifyObservers() {
System.out.println();
for (IObserver observer : observers) {
observer.update(desc);
}
}
/**
* 从指定队列接收消息，然后通过观察者对象处理
*
* @param queueName
* @param observer
* @throws Exception
*/
public void receive(String queueName, IObserver observer) throws Exception {
try {
this.init();
// 指定队列
channel.queueDeclare(queueName, true, false, false, null);
// 绑定队列到指定的交换机
// channel.queueBind(queueName, mqExchangeName, queueName);
// log.info("Bind queue {} to {} success! ", queueName, mqExchangeName);
QueueingConsumer consumer = new QueueingConsumer(channel);
channel.basicConsume(queueName, true, consumer);
while (true) {
// 阻塞，直到接收到一条消息
QueueingConsumer.Delivery delivery = consumer.nextDelivery();
String message = new String(delivery.getBody());
log.info("Received a message: " + message);
observer.update(message);
}
} finally {
this.destory();
}
}
/* (non-Javadoc)
* @see ome.formats.importer.IObservable#notifyObservers(ome.formats.importer.ImportEvent)
*/
public void notifyObservers(ImportEvent event) {
for (IObserver observer : observers) {
observer.update(this, event);
}
}
@Override
public void onStateChange(T content) {
for (IObserver<T> observer : observers) {
observer.update(content);
}
}
public void notifyObservers() {
for (int i = 0; i < observers.size(); i++) {
IObserver observer = observers.get(i);
observer.update();
}
}