Spring boot:Web server failed to start. Port 8080 was already in use.出现这句关键词,就是端口号被占用了,废话少说上图1、查询被占用的端口号netstat -ano | findstr 端口号2、关闭被占用的端口号的进程任务管理器、详细信息 版权声明:本文为m0_60311922原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接和本声明。原文链接:https://blog.csdn.net/m0_60311922/article/details/121605212