在這種方式下，利用STOMP將消息發送到ActiveMQ，對應用程序的其它部分來說，是相當透明的。
In this manner, using STOMP to send messages to ActiveMQ is quite transparent to the rest of the application.
MessageHelper類的這一方法與WebServer是在同一個虛擬機中執行的——在本例中，就是執行Jetty實例和ActiveMQ的那個虛擬機。
For instance, we were using ActiveMQ when it did not have a strong dead letter processing capability.
The ActiveMQ RA supports both outbound connections (JMS calls out to the message broker), and inbound connections (ActiveMQ-originated calls call into MDBs).
