Solve the "Port 8080 required by Tomcat 9.0 Server at localhost is already in use" that pops up when running the web project in eclipse...

　　1. The default port of tomcat is 8080, you can modify the port through tomcat

　　　 Modify tomcat\conf\server.xml

　　　

 

　　　　

　　    As a result, the program still reports "Port 8080 required by Tomcat 9.0 Server at localhost is already in use..." error,

　　　Remove the tomcat of eclipse and reconfigure it.