嗨，我在netbeans上有一个使用xhtml和apache tomcat的Web项目，当我运行它时，它会打开我的浏览器并说：
An Error Occurred:
Could not initialize class javax.crypto.JceSecurity
我记得做的最后一件事可以做点什么（因为它以前运行良好，而且我还没有碰过它，所以正在更新Java（1.8.0_211），我尝试了毫无疑问的netbeans并重新安装并进行了同样的操作还为Java和jdk设置环境变量，并安装了我在网站上介绍的默认local_policy.jar和US_export_policy.jar，所有这些都是在我搜索此修复程序时发现的，但到目前为止没有运气。
我的代码在其他PC上也能正常工作，但我没有碰过它，但是现在却出现了该错误。
完整的堆栈跟踪：
java.lang.NoClassDefFoundError: Could not initialize class javax.crypto.JceSecurity
at javax.crypto.KeyGenerator.nextSpi(KeyGenerator.java:340)
at javax.crypto.KeyGenerator.<init>(KeyGenerator.java:168)
at javax.crypto.KeyGenerator.getInstance(KeyGenerator.java:223)
at com.sun.faces.util.ByteArrayGuardAESCTR.setupKeyAndCharset(ByteArrayGuardAESCTR.java:200)
at com.sun.faces.util.ByteArrayGuardAESCTR.<init>(ByteArrayGuardAESCTR.java:97)
at com.sun.faces.context.flash.ELFlash.<init>(ELFlash.java:268)
at com.sun.faces.context.flash.ELFlash.getFlash(ELFlash.java:306)
at com.sun.faces.context.flash.FlashFactoryImpl.getFlash(FlashFactoryImpl.java:56)
at com.sun.faces.context.ExternalContextImpl.getFlash(ExternalContextImpl.java:1106)
at javax.faces.context.ExternalContextWrapper.getFlash(ExternalContextWrapper.java:991)
at com.sun.faces.lifecycle.Phase.handleBeforePhase(Phase.java:214)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:99)
at com.sun.faces.lifecycle.RestoreViewPhase.doPhase(RestoreViewPhase.java:121)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:836)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1839)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
答案 0 :(得分：-1)
来自类NoClassDefFoundError的 javadoc
搜索的类定义在编译当前正在执行的类时存在，但不再可以找到该定义。
大多数IDE具有 build 配置和 run 配置。
也许构建配置包括包含类javax.crypto.JceSecurity的JAR，但运行配置不包含。