Question

我正在使用spring MVC，hibernate，Spring Data JPA项目创建一个多模块Maven项目。目前，我已经集成了Activiti工作流引擎并使用Joda日期依赖性。但是我的模型类使用Java 8 LocalDateTime。还可以在单独的Maven模块（公共服务）中启用和配置Spring Data JPA审核（@ CreatedDate，@ LastModifiedDate等）

项目结构-

模型类-

JPA配置文件-

我的问题是，当我保存工作流程对象时，会出现 Joda LocalDate 不存在错误

java.lang.TypeNotPresentException: Type org.joda.time.LocalDate not present
    at sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:117)
    at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:125)
    at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49)
    at sun.reflect.generics.visitor.Reifier.reifyTypeArguments(Reifier.java:68)
    at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:138)
    at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:49)
    at sun.reflect.generics.repository.ClassRepository.getSuperInterfaces(ClassRepository.java:108)
    at java.lang.Class.getGenericInterfaces(Class.java:913)
    at org.springframework.core.ResolvableType.getInterfaces(ResolvableType.java:472)
    at org.springframework.core.ResolvableType.as(ResolvableType.java:437)
    at org.springframework.core.convert.support.GenericConversionService.getRequiredTypeInfo(GenericConversionService.java:292)
    at org.springframework.core.convert.support.GenericConversionService.addConverter(GenericConversionService.java:86)
    at java.util.ArrayList.forEach(ArrayList.java:1257)
    at org.springframework.data.auditing.DefaultAuditableBeanWrapperFactory$DateConvertingAuditableBeanWrapper.<init>(DefaultAuditableBeanWrapperFactory.java:172)
    at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory$MappingMetadataAuditableBeanWrapper.<init>(MappingAuditableBeanWrapperFactory.java:148)
    at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory.lambda$null$1(MappingAuditableBeanWrapperFactory.java:84)
    at java.util.Optional.map(Optional.java:215)
    at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory.lambda$getBeanWrapperFor$3(MappingAuditableBeanWrapperFactory.java:78)
    at java.util.Optional.flatMap(Optional.java:241)
    at org.springframework.data.auditing.MappingAuditableBeanWrapperFactory.getBeanWrapperFor(MappingAuditableBeanWrapperFactory.java:70)
    at org.springframework.data.auditing.AuditingHandler.touch(AuditingHandler.java:162)
    at org.springframework.data.auditing.AuditingHandler.markCreated(AuditingHandler.java:132)
    at org.springframework.data.jpa.domain.support.AuditingEntityListener.touchForCreate(AuditingEntityListener.java:92)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.hibernate.jpa.event.internal.ListenerCallback.performCallback(ListenerCallback.java:35)
    at org.hibernate.jpa.event.internal.CallbackRegistryImpl.callback(CallbackRegistryImpl.java:97)
    at org.hibernate.jpa.event.internal.CallbackRegistryImpl.preCreate(CallbackRegistryImpl.java:57)
    at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:116)
    at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:192)
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:135)
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:62)
    at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:800)
    at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:785)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:305)
    at com.sun.proxy.$Proxy109.persist(Unknown Source)
    at org.springframework.data.jpa.repository.support.SimpleJpaRepository.save(SimpleJpaRepository.java:490)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:377)
    at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:200)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:629)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:593)
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:578)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185)
    at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:59)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185)
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:294)
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185)
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:139)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185)
    at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:135)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185)
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185)
    at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:61)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185)
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212)
    at com.sun.proxy.$Proxy115.save(Unknown Source)
    at my.com.scicom.esd.workflowservice.service.WorkFlowService.createWorkFlow(WorkFlowService.java:87)
    at my.com.scicom.esd.workflowservice.controller.WorkFlowController.createWorkflow(WorkFlowController.java:67)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:209)
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:877)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:783)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:991)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:974)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:877)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:661)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:851)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:800)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:800)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1471)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.ClassNotFoundException: org.joda.time.LocalDate
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactory.java:114)
        ... 109 more

并且没有其他日期字段，而是使用JPA审核创建日期和修改日期

Answer 1

好吧，在巨大的堆栈跟踪中的某个地方，有一段代码“按名称”寻找org.joda.time.LocalDate类，而JVM无法找到它。

查找问题的唯一方法是调试-我将从GenericConversionService.getRequiredTypeInfo()开始并搜索堆栈。

但是，关于您列出的模型类...

@CreatedDate和@LastModifiedDate都使用Spring Data Auditing可能支持的（我认为是Java 8）LocalDateTime，但是由于缺少LocalDateTime 唯一性信息（即时区），可能会有一些（Spring Framework）代码试图将LocalDateTime转换为JodaTime。

一个人应该使用全世界唯一的值进行审核。

使用模型和the logic I provided on a similar issue的示例... 如果印度的用户（印度标准时间，格林尼治标准时间+5：30 ）在早上9点创建Workflow实例，而在英国（伦敦，格林尼治标准时间+0 ）还在早上9点创建一个Workflow实例，这两个实例相距5个半小时，但已列出，例如应用程序同时创建给第三用户的信息，这是不正确的。

因此，我会尝试使用其他方式代替LocalDateTime，也许使用check this approach。

更新

检查Spring框架的源代码fully supported date types are these，但对于LocalDateTime，它使用a read/write converter。

LocalDateTime和JodaDate冲突

1 个答案:

但是，关于您列出的模型类...