Port 8080 required by Tomcat v9.0 Server at localhost is already in use. The server may already be running in another process, or a system process may be using the port.

Port 8080 required by Tomcat v9.0 Server at localhost is already in use. The server may already be running in another process, or a system process may be using the port. To start this server you will need to stop the other process or change the port number(s).

打开cmd win+R

输入 netstat -ano|findstr 8080
有的是
netstat -ano|findstr 8005

看一下后面的 端口号

按Ctrl + delete + alt 打开资源管理器

在详细信息中找到 PID 为上面端口号的进程，并结束。