Server localhost in xdb requires user name and password, port occupancy

Problem phenomenon:

After starting a Web program deployed on Tomcat from MyEclipse, the following issues occur:

Then visit the Tomcat home page (http://localhost:8080/) and pop up the following dialog box:

Cause of the problem:

Oracle 11g is installed on the machine and Oracle service is started, Oracle's own HTTP server takes up 8080 ports, and Tomcat uses the same port as Oracle.

Workaround:

Modify file: D:\apache-tomcat-8.0.0-RC5\conf\server.xml, after modifying the value of port to a different port, e.g. 8888

   <connector port= "8080" protocol= "http/1.1"      connectiontimeout= "20000"      redirectport= "8443"/>

Server localhost in xdb requires user name and password, port occupancy