Export mail messages 导出邮件信息
In this example, this is the interface of the process that has an MQ export that needs to process messages in order.
在本例中，接口指的是具有MQ导出并需要按顺序处理消息的一个过程的接口。
The MDB responsible for consuming the messages sent by the export plug-in USES an activation specification (a set of connectivity parameters) to connect to a JMS queue.
mdb负责使用由导出插件发送的消息，它使用激活规范(一组连接参数)连接到一个jms队列。
This ensures that the export knows to subscribe to a topic to receive request messages.
这可以确保该导出了解对某个主题进行订阅，以便接收相应的请求消息。
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