javassist_0 cannot be cast to javassist.util.proxy.Proxy

出现这个：javassist_0 cannot be cast to javassist.util.proxy.Proxy

javassist_0 cannot be cast to javassist.util.proxy.Proxycom.hk.beans.Student_$$_javassist_0 cannot be cast to javassist.util.proxy.ProxyHHH000142: Javassist Enhancement failed: com.hk.beans.Student

两种情况：


一、web.xml未配置openSessionInView过滤器

 <filter>        <filter-name>openSessionInView</filter-name>        <filter-class>org.springframework.orm.hibernate5.support.OpenSessionInViewFilter</filter-class>    </filter>    <filter-mapping>        <filter-name>openSessionInView</filter-name>        <url-pattern>/*</url-pattern>    </filter-mapping>

二、jar包冲突

保留版本较高的，如果删不掉，先把工程移除Tomcat关闭MyEclipse在删除

19:20:57.698 [http-bio-80-exec-9] ERROR org.hibernate.proxy.pojo.javassist.JavassistProxyFactory - HHH000142: Javassist Enhancement failed: com.hk.beans.Studentjava.lang.ClassCastException: com.hk.beans.Student_$$_javassist_0 cannot be cast to javassist.util.proxy.Proxy    at org.hibernate.proxy.pojo.javassist.JavassistProxyFactory.getProxy(JavassistProxyFactory.java:123) [hibernate-core-5.0.1.Final.jar:5.0.1.Final]    at org.hibernate.tuple.entity.AbstractEntityTuplizer.createProxy(AbstractEntityTuplizer.java:666) [hibernate-core-5.0.1.Final.jar:5.0.1.Final]    at org.hibernate.persister.entity.AbstractEntityPersister.createProxy(AbstractEntityPersister.java:4399) [hibernate-core-5.0.1.Final.jar:5.0.1.Final]    at org.hibernate.event.internal.DefaultLoadEventListener.createProxyIfNecessary(DefaultLoadEventListener.java:333) [hibernate-core-5.0.1.Final.jar:5.0.1.Final]    at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:254) [hibernate-core-5.0.1.Final.jar:5.0.1.Final]    at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:134) [hibernate-core-5.0.1.Final.jar:5.0.1.Final]    at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1071) [hibernate-core-5.0.1.Final.jar:5.0.1.Final]    at org.hibernate.internal.SessionImpl.access$2600(SessionImpl.java:164) [hibernate-core-5.0.1.Final.jar:5.0.1.Final]    at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.getReference(SessionImpl.java:2600) [hibernate-core-5.0.1.Final.jar:5.0.1.Final]    at org.hibernate.internal.SessionImpl.load(SessionImpl.java:945) [hibernate-core-5.0.1.Final.jar:5.0.1.Final]    at com.hk.daoimpl.StudentDaoHbmImpl.selectStuByStuID(StudentDaoHbmImpl.java:37) [StudentDaoHbmImpl.class:?]    at com.hk.serviceimpl.StudentServiceImpl.findStuByStuID(StudentServiceImpl.java:37) [StudentServiceImpl.class:?]    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_45]    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_45]    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_45]    at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_45]    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:302) [spring-aop-4.2.1.RELEASE.jar:4.2.1.RELEASE]    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) [spring-aop-4.2.1.RELEASE.jar:4.2.1.RELEASE]    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) [spring-aop-4.2.1.RELEASE.jar:4.2.1.RELEASE]    at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) [spring-tx-4.2.1.RELEASE.jar:4.2.1.RELEASE]    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281) [spring-tx-4.2.1.RELEASE.jar:4.2.1.RELEASE]    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) [spring-tx-4.2.1.RELEASE.jar:4.2.1.RELEASE]    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) [spring-aop-4.2.1.RELEASE.jar:4.2.1.RELEASE]    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) [spring-aop-4.2.1.RELEASE.jar:4.2.1.RELEASE]    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) [spring-aop-4.2.1.RELEASE.jar:4.2.1.RELEASE]    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207) [spring-aop-4.2.1.RELEASE.jar:4.2.1.RELEASE]    at com.sun.proxy.$Proxy33.findStuByStuID(Unknown Source) [?:?]    at com.hk.actions.QueryAction.execute(QueryAction.java:24) [QueryAction.class:?]    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_45]    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_45]    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_45]    at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_45]    at ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:892) [ognl-3.0.19.jar:?]    at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:1294) [ognl-3.0.19.jar:?]    at ognl.ObjectMethodAccessor.callMethod(ObjectMethodAccessor.java:68) [ognl-3.0.19.jar:?]    at com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethodWithDebugInfo(XWorkMethodAccessor.java:117) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.ognl.accessor.XWorkMethodAccessor.callMethod(XWorkMethodAccessor.java:108) [xwork-core-2.3.31.jar:2.3.31]    at ognl.OgnlRuntime.callMethod(OgnlRuntime.java:1370) [ognl-3.0.19.jar:?]    at ognl.ASTMethod.getValueBody(ASTMethod.java:91) [ognl-3.0.19.jar:?]    at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212) [ognl-3.0.19.jar:?]    at ognl.SimpleNode.getValue(SimpleNode.java:258) [ognl-3.0.19.jar:?]    at ognl.Ognl.getValue(Ognl.java:467) [ognl-3.0.19.jar:?]    at ognl.Ognl.getValue(Ognl.java:431) [ognl-3.0.19.jar:?]    at com.opensymphony.xwork2.ognl.OgnlUtil$3.execute(OgnlUtil.java:352) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.ognl.OgnlUtil.compileAndExecuteMethod(OgnlUtil.java:404) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.ognl.OgnlUtil.callMethod(OgnlUtil.java:350) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:430) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:290) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:251) [xwork-core-2.3.31.jar:2.3.31]    at org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41) [struts2-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256) [struts2-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:168) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265) [xwork-core-2.3.31.jar:2.3.31]    at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:76) [struts2-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:229) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73) [struts2-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at org.apache.struts2.interceptor.DateTextFieldInterceptor.intercept(DateTextFieldInterceptor.java:125) [struts2-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91) [struts2-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:253) [struts2-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:140) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164) [struts2-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189) [xwork-core-2.3.31.jar:2.3.31]    at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:245) [xwork-core-2.3.31.jar:2.3.31]    at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54) [struts2-core-2.3.31.jar:2.3.31]    at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:575) [struts2-core-2.3.31.jar:2.3.31]    at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81) [struts2-core-2.3.31.jar:2.3.31]    at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99) [struts2-core-2.3.31.jar:2.3.31]    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) [catalina.jar:7.0.42]    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) [catalina.jar:7.0.42]    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) [catalina.jar:7.0.42]    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) [catalina.jar:7.0.42]    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) [catalina.jar:7.0.42]    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) [catalina.jar:7.0.42]    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) [catalina.jar:7.0.42]    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) [catalina.jar:7.0.42]    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) [catalina.jar:7.0.42]    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) [catalina.jar:7.0.42]    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023) [tomcat-coyote.jar:7.0.42]    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589) [tomcat-coyote.jar:7.0.42]    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) [tomcat-coyote.jar:7.0.42]    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [?:1.7.0_45]    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [?:1.7.0_45]    at java.lang.Thread.run(Thread.java:744) [?:1.7.0_45]