设计了此模式的高层框架，框架中引入了命令总线和命令执行器等组件。

In this framework, imported some components, such as command bus, command executor ect.

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reserve（占用） : 这个命令由总线适配器发送用以获得或保留对SCSI设备的所有权。

reserve : This command is issued by a host bus adapter to obtain or maintain ownership of a SCSI device.

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运行程序客户端发送消息到总线，打开命令提示窗口，改到您正使用的应用程序服务器概要的\ bin目录下。

To run the application client to send a message to the bus, open a command prompt window, and change to the \ bin directory for the application server profile that you are using.

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