java.lang.NoClassDefFoundError :: Tomcat中给定路径中存在的类[重复]答案

【问题标题】：java.lang.NoClassDefFoundError :: Class present at the given path in Tomcat [duplicate]java.lang.NoClassDefFoundError :: Tomcat中给定路径中存在的类[重复]
【发布时间】：2025-12-25 14:25:06
【问题描述】：

我目前在运行 Jasper 报告应用程序时遇到问题。

在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.framework.web.servicelocator.ServiceLocator

我确认该类存在于tomcat/WEB-INF/classes 文件夹下的适当路径中。

我还启用了 Tomcat 类加载器日志

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

相关日志： [Loaded com.abcd.framework.web.servicelocator.ServiceLocator from file:/C:/3.0/tomcat-6.0-Jasper/webapps/jasperserver-pro/WEB-INF/classes/com/abcd/framework/web/servicelocator/ServiceLocator.class]

我不知道为什么，尽管类已成功加载，但出现错误。

感谢您的帮助

谢谢

在下方添加了堆栈跟踪

> 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

【问题讨论】：

发布异常的完整堆栈跟踪。
大多数时候 java.lang.NoClassDefFoundError 不是实际问题。在此之前应该有另一个例外。您应该寻找在消息中类的静态初始化期间发生的异常。对此类的任何访问都会触发 NoClassDefFound 但这仅意味着该类无法初始化。
我在原始帖子中添加了堆栈跟踪
其实在这个异常之前是没有异常的。出于调试目的，我尝试在静态块中添加静态块和打印语句，但它永远不会被执行
确保你的 jasper 相关 jars 在 tomcat 类路径中。

标签： java tomcat6 classloader

【解决方案1】：

一些说明：

NoClassDefFoundError != ClassNotFoundException
NoClassDefFoundError 通常意味着 JVM 曾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 之前寻找一些ExceptionInInitializerError
可能错误出现在您班级的static 块中。

【讨论】：

【解决方案2】：

NoClassDefFound 表示，在编译时一切正常，但在运行时却不行。也许您的某些.jars 在您的tomcat 上丢失了。您必须将它们添加到 tomcat 类路径或将它们复制到运行 tomcat 的 JRE。

在这里Why am I getting a NoClassDefFoundError in Java? 您可以找到更多信息/解释。

这里Jars not copied to Tomcat's lib folder是一个关于设置eclipse自动部署依赖的线程。

【讨论】：