如何使用Java验证JMS队列是否存在？ [英] How do I verify that a JMS queue exists using Java?

问题描述

如何使用Java API检查JMS服务器上是否存在队列？我现在不想向队列发送或接收任何数据，只需验证队列是否存在。此外，队列可能为空。

How can I check whether a queue exists on a JMS server using the Java API? I don't want to send or receive any data to the queue for now, just verify that the queue exists. Also, the queue may be empty.

这是我的代码示例。为简单起见，我删除了错误处理。

Here is my code sample. I have removed the error handling for simplicity.

    Connection connection = null;
    Session session = null;
    connection = factory.createConnection();
    session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);

    //I was hoping this next line would throw an exception if the queue does not exist
    Queue queue = session.createQueue(queueName);

我的JMS服务器是TIBCO EMS。我希望有一个适用于5-7版本的解决方案。

My JMS server is TIBCO EMS. I'm hoping for a solution that works on versions 5-7.

解决方案

我按照接受的答案中的建议，但创建了一个浏览器。以下行根据需要引发了异常：

I followed the recommendation in the accepted answer but created a browser instead. The following line threw an exception as desired:

QueueBrowser browser = session.createBrowser(queue);

推荐答案

尝试在会话中传递消费者或生产者刚刚创建的队列对象：

Try creating a consumer or producer off the Session passing in the queue object you just created:

session.createConsumer(queue);

如果队列（或主题）不存在，这将抛出InvalidDestinationException。

This should throw an InvalidDestinationException if the queue (or topic) does not exist.

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