tomcat启动时错误：Failed to start component [StandardEngine[Catalina].StandardHost[localhost].错误

Caused by: java.lang.IllegalStateException: Unable to complete the scan for annotations for web application [/omkwt] due to a *Error. Possible root causes include a too low setting for -Xss and illegal cyclic inheritance dependencies. The class hierarchy being processed was [org.bouncycastle.asn1.ASN1EncodableVector->org.bouncycastle.asn1.DEREncodableVector->org.bouncycastle.asn1.ASN1EncodableVector]

解决办法：

进入tomcat的安装目录进行清理缓存，找到work文件夹。

此文件下有个catalina目录（tomcat小名叫catalina），work目录下的文件都可以删除。

work目录下有一个catalina目录。删除work中的tomcat目录后，缓存已经删除。