tomcat启动时检测到循环继承而栈溢出的问题
一个用户在使用tomcat7054版本启动的时候遇到的错误：
Caused by: java.lang.IllegalStateException:
Unable to complete the scan for annotations for web application [/test]
due to a StackOverflowError. Possible root causes include a too low setting
for -Xss and illegal cyclic inheritance dependencies.
The class hierarchy being processed was
[org.jaxen.util.AncestorAxisIterator->
org.jaxen.util.AncestorOrSelfAxisIterator->
org.jaxen.util.AncestorAxisIterator]
at org.apache.catalina.startup.ContextConfig.checkHandlesTypes(ContextConfig.java:2112)
at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2059)
at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:1934)
at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1900)
at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1885)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1317)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:876)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:374)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5355)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
这是在tomcat解析servlet3注释时进行类扫描的过程，发现了两个类的继承关系存在循环继承的情况而导致了栈溢出。
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