问题描述
我在服务重启后第一次调用 Apache TomCat 8.5.51 时随机收到以下错误。一段时间后错误会自动消失，这使得调试变得非常困难。
可能是什么原因？
错误日志：
27-Jul-2021 13:40:44.965 INFO [localhost-startStop-1] org.apache.catalina.core.ApplicationContext.log ContextListener: attributeAdded('StockTicker','async.Stockticker@75f16954')
27-Jul-2021 13:41:03.686 SEVERE [http-nio-8080-exec-1] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [Cocoon] in context with path [/cocoon-2.1.11] threw exception [Servlet execution threw an exception] with root cause
java.lang.StackOverflowError
at org.apache.xml.utils.SuballocatedIntVector.<init>(SuballocatedIntVector.java:115)
at org.apache.xml.dtm.ref.DTMDefaultBase.<init>(DTMDefaultBase.java:207)
at org.apache.xml.dtm.ref.DTMDefaultBaseTraversers.<init>(DTMDefaultBaseTraversers.java:90)
at org.apache.xml.dtm.ref.DTMDefaultBaseIterators.<init>(DTMDefaultBaseIterators.java:85)
at org.apache.xml.dtm.ref.sax2dtm.SAX2DTM.<init>(SAX2DTM.java:253)
at org.apache.xml.dtm.ref.sax2dtm.SAX2DTM.<init>(SAX2DTM.java:224)
at org.apache.xml.dtm.ref.sax2dtm.SAX2RTFDTM.<init>(SAX2RTFDTM.java:126)
at org.apache.xml.dtm.ref.DTMManagerDefault.getDTM(DTMManagerDefault.java:307)
at org.apache.xpath.XPathContext.getRTFDTM(XPathContext.java:1258)
at org.apache.xpath.XPathContext.pushRTFContext(XPathContext.java:1275)
at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:386)
at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:248)
at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
at org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:141)
at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:141)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394)
org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:248)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:141)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394)
org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:248)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:141)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394)
org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:248)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:141)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394)
org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:248)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:141)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394)
org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:248)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:141)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394)
org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:248)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:141)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394)
org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:248)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:141)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394)
org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:248)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:141)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394)
org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:248)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:141)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394)
org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:248)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:141)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394)
org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:248)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:141)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394)
org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:248)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:141)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394)
org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:248)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:141)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394)
org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:248)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:141)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394)
org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:248)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:141)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394)
org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:248)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:141)
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394)
解决方法
java.lang.StackOverflowError 根据 docs
由于应用程序递归得太深而发生堆栈溢出时抛出。
从堆栈跟踪中，可以在下面的几行中看到递归。 ElemTemplate.execute 调用 TransformerImpl.executeChildTemplates，后者依次调用前者从而建立递归：
org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2400)
org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:394).
xml 结构中的某些内容或解析它的代码可能会导致 java.lang.StackOverflowError。
也值得一试-Xss jvm setting。