Vue2切换生产环境、测试环境和开发环境 参考:https://www.it610.com/article/1306039917528256512.html;https://blog.csdn.net/csxypr/article/details/89644527 勤学似春起之苗,不见其增,日有所长; 辍学如磨刀之石,不见其损,日所有亏!