javatomcat

Tomcat Server Error - Port 8080 already in use

I received the following error while attempting to execute a Servlet program in Eclipse Mars EE.

'Starting Tomcat v8.0 Sever at localhost' has encountered a problem.

Port 8080 required by Tomcat v8.0 Server at localhost is already in use. There 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).

What should I do to stop the process? I'm assuming that Tomcat 7 server must be stopped. How shall I do it if my operating system is Windows 8?

Error Screenshot:

error screen shot

Solution

  • All I had to do was to change the port numbers. enter image description here

    1. Open Eclipse

    2. Go to Servers panel

    3. Right click on Tomcat Server select Open, Overview window will appear.

    4. Open the Portstab. You will get the following:

      • Tomcat adminport

      • HTTP/1.1

      • AJP/1.3

    5. I changed the port number of HTTP/1.1 (i.e. to 8081)

    6. You might have to also change the port of Tomcat adminport (i.e. to 8006) and of AJP/1.3 (i.e. to 8010).

    7. Access your app in the browser at http://localhost:8081/...