Cannot start Tomcat to debug in Eclips - tomcat localhost-config is missing, 'Starting Tomcat v7.0 Server at localhost' has encountered a problem.

在Eclipse的JavaEE环境中，点击run下拉run as- run on server, 选择index.jsp，启动tomcat调试失败，错误信息：Tomcat localhost-config is missing, 'Starting Tomcat v7.0 Server at localhost' has encountered a problem.如何解决？在Eclipse的JavaEE环境中，点击run下拉run as- run on server