问题描述
typeExceptionreportmessagedescriptionTheserverencounteredaninternalerror()thatpreventeditfromfulfillingthisrequest.exceptionjavax.servlet.ServletException:Errorallocatingaservletinstanceorg.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)java.lang.Thread.run(Thread.java:595)rootcausejava.lang.NoClassDefFoundError:ClientAccessCounts(wrongname:coreservlets/ClientAccessCounts)java.lang.ClassLoader.defineClass1(NativeMethod)java.lang.ClassLoader.defineClass(ClassLoader.java:620)java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1817)org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:872)org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1325)org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)java.lang.Thread.run(Thread.java:595)不知道是哪里错了,高手指点一下。
解决方案
解决方案二:
java.lang.NoClassDefFoundError:ClientAccessCounts(wrongname:coreservlets/ClientAccessCounts)系统找不着ClientAccessCounts这个类看看你引入了没有?或者ClientAccessCounts有没有编译好的.class文件
解决方案三:
ClientAccessCounts这个类不在类路径里。