Tomcat部署后报错Artifact is being deployed
[2019-11-12 08:21:29,536] Artifact HttpSession2:war exploded: Artifact is being deployed, please wait...
省略
[2019-11-12 08:21:29,637] Artifact HttpSession2:war exploded: Error during artifact deployment. See server log for details.在配置正确的情况下仍然部署失败，很有可能是urlPatterns导致了根目录的混乱
如上图所示，urlPatterns=“showAllBooks”，少写了"/"，导致了该错误，解决方法如下:
