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我創建動態目的地MessageBroker.getMessageBroker(空)獲得零指示字例外
MessageBroker經紀人= MessageBroker.getMessageBroker(NULL);
MessageService service = (MessageService) broker.getService("message-service");
MessageDestination destination = (MessageDestination) service.createDestination("Group1");
if (service.isStarted()) {
destination.start();
}
但是我得到空指針異常 MessageBroker經紀人= MessageBroker.getMessageBroker(NULL);
任何人都可以幫我