Exit
quit 命令（也别名为 exit）请求 shell 退出，以正常的方式关闭 Spring 应用程序上下文。如果没有覆盖，JLine History bean 会将所有命令的历史记录写入磁盘，以便在下次启动时再次使用它们。
The quit command (also aliased as exit) requests the shell to quit, gracefully
closing the Spring application context. If not overridden, a JLine History bean writes a history of all
commands to disk, so that they are available again on the next launch.