Eclipse项目红叉，Problems提示the project was not built due to “Could not delete 'classes/com'”

当我在用Eclipse进行clean project之后，使用tomcat启动不起来，刷新项目出现红叉，提示the project was not built due to “Could not delete ‘target/classes/com’.” Fix the problem, then try refreshing this project and build it since it may be inconsistent.
解决办法：在资源管理器中找到项目路径，target目录下的classes/com文件夹，右键删除，删不掉的重启电脑删除，立马就能解决问题。这时再打开Eclipse使用tomcat启动，启动成功，完美!