Apache ActiveMQ 非动态连接到主题
我已经设置了 ActiveMQ，并且可以使用“dynamicTopics/MyTopic”创建/连接到主题。这非常有用：
Properties env = new Properties( );
env.setProperty(Context.INITIAL_CONTEXT_FACTORY,"org.apache.activemq.jndi.ActiveMQInitialContextFactory");
env.setProperty(Context.PROVIDER_URL,"tcp://myhostname:xxxxx");
javax.naming.Context ctx = new InitialContext(env);
InitialContext jndi = new InitialContext(env);
// Look up a JMS connection factory
TopicConnectionFactory conFactory = (TopicConnectionFactory)jndi.lookup("TopicConnectionFactory");
// Create a JMS connection
TopicConnection connection = conFactory.createTopicConnection(username,password);
Topic chatTopic = (Topic)jndi.lookup("dynamicTopics/MyTopic");
我想连接到一个已经存在的主题，而不动态创建该主题（如果它不存在），我该怎么做？
干杯，
皮特
I've set up ActiveMQ and I can create/connect to a topic using "dynamicTopics/MyTopic". This works great:
Properties env = new Properties( );
env.setProperty(Context.INITIAL_CONTEXT_FACTORY,"org.apache.activemq.jndi.ActiveMQInitialContextFactory");
env.setProperty(Context.PROVIDER_URL,"tcp://myhostname:xxxxx");
javax.naming.Context ctx = new InitialContext(env);
InitialContext jndi = new InitialContext(env);
// Look up a JMS connection factory
TopicConnectionFactory conFactory = (TopicConnectionFactory)jndi.lookup("TopicConnectionFactory");
// Create a JMS connection
TopicConnection connection = conFactory.createTopicConnection(username,password);
Topic chatTopic = (Topic)jndi.lookup("dynamicTopics/MyTopic");
I would like to connect to a topic already exists without dynamically creating the topic if it doesn't exist, how can I do so?
Cheers,
Pete
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虽然您不需要使用 AMQ 手动创建目标，但您始终可以选择该选项。基本上，您可以更改安全设置以仅允许管理员创建目标。请参阅 AMQ 常见问题解答：
http://activemq.apache。 org/how-do-i-create-new-destinations.html
问候
蒂姆
www.fusesource.com
While you don't need to create destinations manually with AMQ you always have that option. Basically you can alter the security settings to allow only an admin to create destinations. See the AMQ FAQ for this:
http://activemq.apache.org/how-do-i-create-new-destinations.html
Regards
Tim
www.fusesource.com
你实际上所做的只是与主题联系起来。 ActiveMQ 非常好用，如果主题以前不存在，它会为您创建主题。
因此，要连接到现有主题，只需执行与您已经执行的操作相同的操作即可。
What you are actually doing is just connecting to topic. ActiveMQ is so nice that it creates topic for you if it did not exist before.
So, to connect to already existing topic just do the same that you are already doing.