Failed to start component [StandardEngine[Catalina].StandardHost[localhost].Stan
检查web.xml中 servlet的url-pattern后面是否缺少‘/’,比如
<filter-mapping>
<filter-name>right</filter-name>
<!-- 要过滤的文件夹 -->
<url-pattern>/pages/back/*</url-pattern>
</filter-mapping>
文档来源：51CTO技术博客https://blog.51cto.com/u_15322177/3266608
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