java.lang.ClassCastException: $$_javassist_2 cannot be cast to javassist.util.proxy.Proxy

本文介绍了在整合SSH框架过程中遇到的ClassCastException异常及其解决方案。该问题通常由javassist包冲突引起,具体表现为无法将$$_javassist_2转换为javassist.util.proxy.Proxy。文章提供了排查与解决此类冲突的方法。

java.lang.ClassCastException: $$_javassist_2 cannot be cast to javassist.util.proxy.Proxy


整合SSH时出错, javassit 包冲突,看一下是否有两个 javassit-XX.jar


转自:http://www.cnblogs.com/newsouls/p/3942116.html

mservice:null Key: tbmain TraceId:72b290561afc0636 Instance:mservice-347730737 发生时间:Mon Sep 08 08:55:27 GMT+08:00 2025 =================================================== 调用堆栈: kd.bos.exception.KDException: null at kd.bos.service.operation.OperationServiceImpl.localInvokeOperation(OperationServiceImpl.java:124) at kd.bos.service.operation.OperationServiceImpl.invokeOperation(OperationServiceImpl.java:53) at sun.reflect.GeneratedMethodAccessor493.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at kd.bos.service.DispatchServiceImpl.invoke(DispatchServiceImpl.java:47) at sun.reflect.GeneratedMethodAccessor492.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at kd.bos.mservice.rpc.dubbo.debug.LocalDebugProxy$1.lambda$invoke$0(LocalDebugProxy.java:61) at kd.bos.mservice.rpc.dubbo.debug.DubboDebugUtil.invoke(DubboDebugUtil.java:46) at kd.bos.mservice.rpc.dubbo.debug.LocalDebugProxy$1.invoke(LocalDebugProxy.java:58) at com.sun.proxy.$Proxy49.invoke(Unknown Source) at kd.bos.servicehelper.DispatchServiceHelper.invokeBOSService(DispatchServiceHelper.java:103) at kd.bos.servicehelper.operation.OperationServiceHelper.executeOperate(OperationServiceHelper.java:84) at ccpsp.pm.formPlugin.RequirementExamineFormPlugin.submit(RequirementExamineFormPlugin.java:375) at ccpsp.pm.formPlugin.RequirementExamineFormPlugin.afterDoOperation(RequirementExamineFormPlugin.java:340) at kd.bos.form.plugin.FormViewPluginProxy.lambda$fireAfterDoOperation$9(FormViewPluginProxy.java:262) at kd.bos.form.plugin.FormViewPluginProxy.invokeMethod(FormViewPluginProxy.java:163) at kd.bos.form.plugin.FormViewPluginProxy.fireAfterDoOperation(FormViewPluginProxy.java:260) at kd.bos.form.operate.FormOperate.afterInvokeOperation(FormOperate.java:441) at kd.bos.entity.operate.Submit.afterInvokeOperation(Submit.java:289) at kd.bos.form.operate.FormOperate.execute(FormOperate.java:316) at kd.bos.mvc.form.FormView.invokeOperation(FormView.java:637) at kd.bos.mvc.bill.BillView.invokeOperation(BillView.java:203) at kd.bos.mvc.form.FormView.invokeOperation(FormView.java:551) at kd.bos.form.control.Toolbar.itemClick(Toolbar.java:109) at sun.reflect.GeneratedMethodAccessor5863.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.commons.beanutils.MethodUtils.invokeMethod(MethodUtils.java:278) at org.apache.commons.beanutils.MethodUtils.invokeMethod(MethodUtils.java:222) at kd.bos.mservice.form.FormServiceImpl.invokeMethod(FormServiceImpl.java:1566) at kd.bos.mservice.form.FormServiceImpl.invokeAction(FormServiceImpl.java:1002) at kd.bos.mservice.form.FormServiceImpl.batchInvokeAction(FormServiceImpl.java:652) at sun.reflect.GeneratedMethodAccessor1247.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at kd.bos.service.DispatchServiceImpl.invoke(DispatchServiceImpl.java:47) at com.alibaba.dubbo.common.bytecode.Wrapper1.invokeMethod(Wrapper1.java) at com.alibaba.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:46) at com.alibaba.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:72) at com.alibaba.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:53) at com.alibaba.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:66) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at kd.bos.mservice.rpc.dubbo.filter.RequestContextFilter.lambda$invokeProviderSide$0(RequestContextFilter.java:159) at kd.bos.mservice.rpc.dubbo.debug.DubboDebugUtil.invoke(DubboDebugUtil.java:46) at kd.bos.mservice.rpc.dubbo.filter.RequestContextFilter.invokeProviderSide(RequestContextFilter.java:150) at kd.bos.mservice.rpc.dubbo.filter.RequestContextFilter.invoke(RequestContextFilter.java:64) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at com.alibaba.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:23) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at com.alibaba.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:78) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at com.alibaba.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:75) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at kd.bos.mservice.rpc.dubbo.filter.ProviderMetricFilter.invoke(ProviderMetricFilter.java:94) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at kd.bos.mservice.rpc.dubbo.filter.trace.ProviderSpanFilter.invoke(ProviderSpanFilter.java:84) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at kd.bos.mservice.circuitbreaker.filter.dubbo.CircuitbreakerFilter.lambda$invoke$0(CircuitbreakerFilter.java:34) at kd.bos.mservice.circuitbreaker.noop.NoopCircuitbreaker.call(NoopCircuitbreaker.java:43) at kd.bos.mservice.circuitbreaker.filter.dubbo.CircuitbreakerFilter.invoke(CircuitbreakerFilter.java:33) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at kd.bos.mservice.rpc.dubbo.filter.ThreadLifeCycleFilter.invoke(ThreadLifeCycleFilter.java:30) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at com.alibaba.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:70) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at com.alibaba.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:132) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at com.alibaba.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:38) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at com.alibaba.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:38) at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:75) at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleRequest(HeaderExchangeHandler.java:102) at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:264) at com.alibaba.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:52) at com.alibaba.dubbo.remoting.transport.dispatcher.ChannelEventRunnable._run(ChannelEventRunnable.java:105) at com.alibaba.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:67) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.NullPointerException at ccpsp.pm.opplugin.PmRequirApplyAuditOpPlugin.lambda$afterExecuteOperationTransaction$2(PmRequirApplyAuditOpPlugin.java:61) at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948) at java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:580) at ccpsp.pm.opplugin.PmRequirApplyAuditOpPlugin.afterExecuteOperationTransaction(PmRequirApplyAuditOpPlugin.java:44) at kd.bos.entity.plugin.OperationServicePlugInProxy.lambda$fireAfterExecuteOperationTransaction$7(OperationServicePlugInProxy.java:292) at kd.bos.entity.plugin.OperationServicePlugInProxy.invokeMethod(OperationServicePlugInProxy.java:69) at kd.bos.entity.plugin.OperationServicePlugInProxy.fireAfterExecuteOperationTransaction(OperationServicePlugInProxy.java:289) at kd.bos.service.operation.EntityOperateService.doExcete(EntityOperateService.java:752) at kd.bos.service.operation.EntityOperateService.excute(EntityOperateService.java:403) at kd.bos.service.operation.EntityOperateService.excute(EntityOperateService.java:637) at kd.bos.service.operation.OperationServiceImpl.localInvokeOperation(OperationServiceImpl.java:100) ... 82 more 这个错误是什么意思
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09-09
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