问题
启动SpringBoot项目后发现启动失败，控制台输出以下内容Description: The Tomcat connector configured to listen on port 8100 failed to start. The port may already be in use or the connector may be misconfigured. Action: Verify the connector's configuration, identify and stop any process that's listening on port 8100, or configure this application to listen on another port.'
端口号已被占用
查找占用端口的进程
打开命令窗口，输入netstat -ano| 8100,查看占用端口的进程的pid
这里是3184，因此将进程杀死就可以了。
杀死进程
Windows 下杀指定进程taskkill -F /pid 3184
再次启动，运行成功。或者不用杀掉进程，替换这个端口也行！