For example if you are working on this url: https://jerry.sap.corp:4080/sap/bc/ui5_ui5/ui2/ushell/shells/abap/FioriLaunchpad.html
如下solution可以通过在前端debug的方式获得当前gateway 系统的system id. You cannot know what its system id is. In fact, frontend server的system ID能通过Chrome的Network检测请求start_up的response来获得:
这个system ID 通过start up handler class的get_configuration返回:
赋值逻辑就是当前系统id: