Eclipse建立Web项目出现 Runtime "Apache Tomcat v7.0" is invalid. The JRE could not be found. Edit the serve

当用Eclipse建立Web项目出现 Runtime "Apache Tomcat v7.0" is invalid. The JRE could not be found. Edit the serve时，不要慌张，此时，只需要删除Tomcat服务，重新建立一个即可解决。