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问题：

JAVAlang.NoClassDefFoundError:：类在Tomcat中的给定路径上存在[duplicate]

壤驷敏学
2023-03-14

我目前面临一个问题，我正在运行一个Jasper报表应用程序。

调用报告生成请求后，我面临java。lang.NoClassDefFoundError

对于应用程序类，例如com。abcd。框架网状物服务定位器。ServiceLocator

我验证了类是否存在于tomcat/WEB-INF/class文件夹下的适当路径上。

我还使用

JAVA_OPTS = -XX:+TraceClassLoading -XX:+TraceClassUnloading

相关日志：[从文件中加载com.abcd.framework.web.servicelocator.servicelocator:/C:/3.0/tomcat-6.0-Jasper/webapps/jasperserver-pro/web-INF/classes/com/abcd/framework/web/servicelocator/servicelocator.class]

我不能够弄清楚为什么，尽管类被成功加载，我得到错误。

感谢你的帮助

谢谢

在下面添加了堆栈跟踪

> 14:43:28,538 ERROR ManagementServiceImpl,http-30880-1:1294 - caught
> Throwable exception: java.lang.NoClassDefFoundError: Could not
> initialize class com.abcd.framework.web.servicelocator.ServiceLocator
> com.jaspersoft.jasperserver.api.JSException:
> java.lang.NoClassDefFoundError: Could not initialize class
> com.abcd.framework.web.servicelocator.ServiceLocator  at
> com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl.fillReport(EngineServiceImpl.java:497)
>   at
> com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl.executeReportUnitRequest(EngineServiceImpl.java:1666)
>   at
> com.jaspersoft.jasperserver.api.engine.jasperreports.domain.impl.ReportUnitRequest.execute(ReportUnitRequest.java:67)
>   at
> com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl.execute(EngineServiceImpl.java:399)
>   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>   at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>   at java.lang.reflect.Method.invoke(Method.java:601)     at
> org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)
>   at
> org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
>   at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
>   at
> org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:80)
>   at
> com.jaspersoft.ji.license.LicenseCheckAspect.runReport(LicenseCheckAspect.java:113)
>   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>   at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>   at java.lang.reflect.Method.invoke(Method.java:601)     at
> org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621)
>   at
> org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610)
>   at
> org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:65)
>   at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:161)
>   at
> org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)
>   at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
>   at
> org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
>   at $Proxy210.execute(Unknown Source)    at
> com.jaspersoft.ji.adhoc.service.AdhocEngineServiceImpl.execute(AdhocEngineServiceImpl.java:2243)
>   at
> com.jaspersoft.jasperserver.ws.axis2.ManagementServiceImpl.runReport(ManagementServiceImpl.java:1200)
>   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>   at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>   at java.lang.reflect.Method.invoke(Method.java:601)     at
> org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)
>   at
> org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
>   at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
>   at
> org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:80)
>   at
> com.jaspersoft.ji.license.LicenseCheckAspect.executeMSCall(LicenseCheckAspect.java:118)
>   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>   at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>   at java.lang.reflect.Method.invoke(Method.java:601)     at
> org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621)
>   at
> org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610)
>   at
> org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:65)
>   at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
>   at
> org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:90)
>   at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
>   at
> org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
>   at $Proxy267.runReport(Unknown Source)  at
> com.jaspersoft.jasperserver.ws.axis2.ManagementService.runReport(ManagementService.java:240)
>   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>   at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>   at java.lang.reflect.Method.invoke(Method.java:601)     at
> org.apache.axis.providers.java.RPCProvider.invokeMethod(RPCProvider.java:397)
>   at
> org.apache.axis.providers.java.RPCProvider.processMessage(RPCProvider.java:186)
>   at
> org.apache.axis.providers.java.JavaProvider.invoke(JavaProvider.java:323)
>   at
> org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32)
>   at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118)     at
> org.apache.axis.SimpleChain.invoke(SimpleChain.java:83)   at
> org.apache.axis.handlers.soap.SOAPService.invoke(SOAPService.java:453)
>   at org.apache.axis.server.AxisServer.invoke(AxisServer.java:281)    at
> org.apache.axis.transport.http.AxisServlet.doPost(AxisServlet.java:699)
>   at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)     at
> org.apache.axis.transport.http.AxisServletBase.service(AxisServletBase.java:327)
>   at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)     at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
>   at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>   at
> org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:399)
>   at
> org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
>   at
> org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
>   at
> org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
>   at
> org.springframework.security.ui.ExceptionTranslationFilter.doFilterHttp(ExceptionTranslationFilter.java:101)
>   at
> org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
>   at
> org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
>   at
> com.jaspersoft.ji.license.JILicenseFilter.doFilter(JILicenseFilter.java:66)
>   at
> org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
>   at
> org.springframework.security.providers.anonymous.AnonymousProcessingFilter.doFilterHttp(AnonymousProcessingFilter.java:105)
>   at
> org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
>   at
> org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
>   at
> com.jaspersoft.jasperserver.api.metadata.user.service.impl.MetadataAuthenticationProcessingFilter.doFilter(MetadataAuthenticationProcessingFilter.java:139)
>   at
> org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
>   at
> com.jaspersoft.jasperserver.api.metadata.user.service.impl.PasswordExpirationProcessingFilter.doFilter(PasswordExpirationProcessingFilter.java:85)
>   at
> org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
>   at
> com.jaspersoft.jasperserver.multipleTenancy.MTBasicProcessingFilter.doFilterHttp(MTBasicProcessingFilter.java:180)
>   at
> org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
>   at
> org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
>   at
> com.jaspersoft.jasperserver.api.metadata.user.service.impl.JIPortletAuthenticationProcessingFilter.doFilter(JIPortletAuthenticationProcessingFilter.java:81)
>   at
> org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
>   at
> com.jaspersoft.jasperserver.api.logging.filter.BasicLoggingFilter.doFilter(BasicLoggingFilter.java:53)
>   at
> org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
>   at
> org.springframework.security.context.HttpSessionContextIntegrationFilter.doFilterHttp(HttpSessionContextIntegrationFilter.java:235)
>   at
> org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
>   at
> org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:411)
>   at
> org.springframework.security.util.FilterChainProxy.doFilter(FilterChainProxy.java:188)
>   at
> org.springframework.security.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:99)
>   at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>   at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>   at
> com.jaspersoft.jasperserver.war.util.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:67)
>   at
> org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
>   at
> org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
>   at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>   at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>   at
> com.jaspersoft.jasperserver.war.P3PFilter.doFilter(P3PFilter.java:43)
>   at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>   at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>   at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
>   at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
>   at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:558)
>   at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
>   at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
>   at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
>   at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
>   at
> org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859)
>   at
> org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579)
>   at
> org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555)
>   at java.lang.Thread.run(Thread.java:722) Caused by:
> java.lang.NoClassDefFoundError: Could not initialize class
> com.abcd.framework.web.servicelocator.ServiceLocator  at
> com.abcd.myproject.service.ReportProcessingService.fetchReportRecords(ReportProcessingService.java:810)
>   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>   at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>   at java.lang.reflect.Method.invoke(Method.java:601)     at
> org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)
>   at
> org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
>   at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
>   at
> org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
>   at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
>   at
> org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
>   at $Proxy268.fetchReportRecordsForCTR275(Unknown Source)    at
> com.abcd.myproject.ReportDataSourceServiceImpl.setReportParameterValues(ReportDataSourceServiceImpl.java:79)
>   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)  at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>   at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>   at java.lang.reflect.Method.invoke(Method.java:601)     at
> org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)
>   at
> org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
>   at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
>   at
> org.springframework.aop.framework.adapter.AfterReturningAdviceInterceptor.invoke(AfterReturningAdviceInterceptor.java:50)
>   at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
>   at
> org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
>   at $Proxy315.setReportParameterValues(Unknown Source)   at
> com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl.fillReport(EngineServiceImpl.java:1463)
>   at
> com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl$ReportFill.runReport(EngineServiceImpl.java:874)
>   at
> com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl$ReportRunnable.run(EngineServiceImpl.java:754)
>   at
> com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl$SynchronousExecutor.execute(EngineServiceImpl.java:733)
>   at
> com.jaspersoft.jasperserver.api.engine.jasperreports.service.impl.EngineServiceImpl.fillReport(EngineServiceImpl.java:488)
>   ... 115 more

共有2个答案

阎淮晨
2023-03-14

NoClassDefFound表明，在编译时一切正常，但在运行时则不然。也许你的一些。你的tomcat上缺少罐子。您必须将它们添加到tomcat类路径中，或者将它们复制到运行tomcat的JRE中。

这就是为什么Java中会出现NoClassDefFoundError？你可以找到更多的信息/解释。

这里没有复制到Tomcat的lib文件夹的JAR是一个关于设置eclipse以自动部署依赖项的线程。

夔桐
2023-03-14

一些澄清：

  1. NoClassDefFoundError！=<代码>ClassNotFoundException
  2. NoClassDefFoundError通常意味着JVM曾经尝试实例化该类，但未能成功

所以，一些提示：

  • 查找该类的第一个异常。
  • 在NoClassDefFoundError之前查找一些ExceptionInFirst alizerError
  • 可能错误在类的静态块中。
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