警告: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:webProject'
步骤:关闭Tomcat,将项目删除,然后clean.彻底删除后,双击控制台的Tomcat v7.0 at localhost。在弹出的页面中选中Publish module contexts to separate XML files选项。保存退出。重新加载项目运行,搞定。