在此刻，域还没有与任何连接相关联，因此该信息没有预先包含任何数据库信息。
At this point, the domain is not associated with any connection, so this information is not pre-loaded with the database information.
通过创建连接工厂，预先配置它然后将它绑定到命名服务，您可以在消息传递服务中隐藏特定于供应商的连接参数。
By creating a connection factory, pre-configuring it, and binding it to your naming service you can conceal vendor-specific connection parameters in your messaging service.
您需要创建一个服务器套接字，接收预先指定地址的连接。
You need to create a server socket that can accept connections at a predefined address.
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