我已经将我的 tomcat 和 jdk 升级到 apache-tomcat-8.5.12 和 jdk1.8.0_121。但似乎我在启动后遇到了错误。
请引用下面我的错误:
09-Jun-2017 00:37:31.776 INFO [Timer-0] org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading Illegal access: this web application instance has been stopped already. Could not load [java.lang.Math]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
java.lang.IllegalStateException: Illegal access: this web application instance has been stopped already. Could not load [java.lang.Math]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading(WebappClassLoaderBase.java:1305)
at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1293)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1158)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1119)
at org.apache.commons.pool.impl.GenericObjectPool.calculateDeficit(GenericObjectPool.java:1647)
at org.apache.commons.pool.impl.GenericObjectPool.ensureMinIdle(GenericObjectPool.java:1621)
at org.apache.commons.pool.impl.GenericObjectPool.access$700(GenericObjectPool.java:190)
at org.apache.commons.pool.impl.GenericObjectPool$Evictor.run(GenericObjectPool.java:1758)
at java.util.TimerThread.mainLoop(Timer.java:555)
at java.util.TimerThread.run(Timer.java:505)
Exception in thread "Timer-0" java.lang.NoClassDefFoundError: java/lang/Math
at org.apache.commons.pool.impl.GenericObjectPool.calculateDeficit(GenericObjectPool.java:1647)
at org.apache.commons.pool.impl.GenericObjectPool.ensureMinIdle(GenericObjectPool.java:1621)
at org.apache.commons.pool.impl.GenericObjectPool.access$700(GenericObjectPool.java:190)
at org.apache.commons.pool.impl.GenericObjectPool$Evictor.run(GenericObjectPool.java:1758)
at java.util.TimerThread.mainLoop(Timer.java:555)
at java.util.TimerThread.run(Timer.java:505)
Caused by: java.lang.ClassNotFoundException: Illegal access: this web application instance has been stopped already. Could not load [java.lang.Math]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1295)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1158)
at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1119)
... 6 more
Caused by: java.lang.IllegalStateException: Illegal access: this web application instance has been stopped already. Could not load [java.lang.Math]. The following stack trace is thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access.
at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForResourceLoading(WebappClassLoaderBase.java:1305)
at org.apache.catalina.loader.WebappClassLoaderBase.checkStateForClassLoading(WebappClassLoaderBase.java:1293)
... 8 more
最佳答案
这是 Tomcat 发出的误导性错误消息，并不是问题的根本原因。由于出现其他问题，您的实例此时已停止。
在此之前查看 Catalina(或任何其他)日志是否有问题，这将是您的根本原因。此错误消息只是一个恼人的副作用。
最后，升级 Tomcat 时的一个好规则是从 webapps 文件夹中删除提取的 webapp 以防止缓存问题，并让 Tomcat 重新自动部署 web 存档。
关于java - 无法加载 [java.lang.Math]，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44431317/