In this example, they simply print out a trace to show that the code is actually executed during server startup and shutdown.

在这个示例中，它们仅仅打印跟踪以显示在启动和关闭服务器时确实执行了这段代码。

youdao

In this example, they simply print out a trace to show that the code is actually executed during server startup and shutdown.

在这个示例中，它们仅仅打印跟踪以显示在启动和关闭服务器时确实执行了这段代码。

youdao