Tomcat 8 解决“At least one JAR was scanned for TLDs yet contained no TLDs”问题

错误提示：

13-Jun-2017 22:21:16.192 信息 [RMI TCP Connection(5)-127.0.0.1] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
13-Jun-2017 22:21:16.591 信息 [RMI TCP Connection(5)-127.0.0.1] com.opensymphony.xwork2.util.logging.jdk.JdkLogger.info Parsing configuration file [struts-default.xml]
13-Jun-2017 22:21:16.595 严重 [RMI TCP Connection(5)-127.0.0.1] org.apache.catalina.core.StandardContext.startInternal One or more Filters failed to start. Full details will be found in the appropriate container log file
13-Jun-2017 22:21:16.595 严重 [RMI TCP Connection(5)-127.0.0.1] org.apache.catalina.core.StandardContext.startInternal Context [] startup failed due to previous errors

解决办法：

复制两个JAR包到工程的lib中：commons-lang-2.4.jar，commons-lang3-3.2.jar。

我的环境是Tomcat 8.5，struts 2.3.22，复制之后重启Tomcat就好了。