“因为我是 Spring MVC 和 JDO 的新手”
“我不知道错误的原因是什么”
“出现这么多错误消息，我不知道如何找到错误”
“毕竟我的导师来过一次并清除了 hello world mvc 并说因为库”
“我是 spring 和 jdo 的新手，所以我不知道它需要什么库，程序中不需要什么库，即使我在 eclipse 工作，我也必须手动下载或借用我的程序的库... ”
“但是我使用了一个使用 mvc spring 框架的 java 数据对象程序，并纠正了以前的错误，即所谓的库丢失。”
显示是这样的.. 我相信 Eclipse 自动包含 JDO 库:通过 GAE 的 Java 数据对象 所以我想这不是因为 JDO lib 并且我已经使用了
我使用的 Spring 库:
C:\Users\user\Personnal\Software\eclipse\springs lib SDK 1.9.9\spring-aop-3.2.0.RELEASE.jar
C:\Users\user\Personnal\Software\eclipse\springs lib SDK 1.9.9\spring-beans-3.2.0.RELEASE.jar
C:\Users\user\Personnal\Software\eclipse\springs lib SDK 1.9.9\spring-context-3.2.0.RELEASE.jar
C:\Users\user\Personnal\Software\eclipse\springs lib SDK 1.9.9\spring-core-3.2.0.RELEASE.jar
C:\Users\user\Personnal\Software\eclipse\springs lib SDK 1.9.9\spring-expression-3.2.0.RELEASE.jar
C:\Users\user\Personnal\Software\eclipse\springs lib SDK 1.9.9\spring-web-3.2.0.RELEASE.jar
C:\Users\user\Personnal\Software\eclipse\springs lib SDK 1.9.9\spring-webmvc-3.2.0.RELEASE.jar
lib文件夹通常包含在war路径中:
/jdo/war/WEB-INF/lib/appengine-api-1.0-sdk-1.9.9.jar
/jdo/war/WEB-INF/lib/appengine-api-labs.jar
/jdo/war/WEB-INF/lib/appengine-endpoints-deps.jar
/jdo/war/WEB-INF/lib/appengine-endpoints.jar
/jdo/war/WEB-INF/lib/appengine-jsr107cache-1.9.9.jar
/jdo/war/WEB-INF/lib/asm-4.0.jar
/jdo/war/WEB-INF/lib/com.springsource.org.aopalliance-1.0.0.jar
/jdo/war/WEB-INF/lib/commons-logging-1.0.2.jar
/jdo/war/WEB-INF/lib/datanucleus-api-jdo-3.1.3.jar
/jdo/war/WEB-INF/lib/datanucleus-api-jpa-3.1.3.jar
/jdo/war/WEB-INF/lib/datanucleus-appengine-2.1.2.jar
/jdo/war/WEB-INF/lib/datanucleus-core-3.1.3.jar
/jdo/war/WEB-INF/lib/geronimo-jpa_2.0_spec-1.0.jar
/jdo/war/WEB-INF/lib/jdo-api-3.0.1.jar
/jdo/war/WEB-INF/lib/jsr107cache-1.1.jar
/jdo/war/WEB-INF/lib/jta-1.1.jar
/jdo/war/WEB-INF/lib/spring-aop-3.2.0.RELEASE.jar
/jdo/war/WEB-INF/lib/spring-beans-3.2.0.RELEASE.jar
/jdo/war/WEB-INF/lib/spring-context-3.2.0.RELEASE.jar
/jdo/war/WEB-INF/lib/spring-core-3.2.0.RELEASE.jar
/jdo/war/WEB-INF/lib/spring-expression-3.2.0.RELEASE.jar
/jdo/war/WEB-INF/lib/spring-web-3.2.0.RELEASE.jar
/jdo/war/WEB-INF/lib/spring-webmvc-3.2.0.RELEASE.jar
我的控制台显示如下:
<小时/>Sep 27, 2014 1:01:31 PM com.google.apphosting.utils.config.AppEngineWebXmlReader readAppEngineWebXml
INFO: Successfully processed D:\eclipse workspace\jdo\war\WEB-INF/appengine-web.xml
Sep 27, 2014 1:01:31 PM com.google.apphosting.utils.config.AbstractConfigXmlReader readConfigXml
INFO: Successfully processed D:\eclipse workspace\jdo\war\WEB-INF/web.xml
Sep 27, 2014 1:01:31 PM com.google.appengine.tools.development.SystemPropertiesManager setSystemProperties
INFO: Overwriting system property key 'java.util.logging.config.file', value 'D:\eclipse\eclipse\plugins\com.google.appengine.eclipse.sdkbundle_1.9.9\appengine-java-sdk-1.9.9\config\sdk\logging.properties' with value 'WEB-INF/logging.properties' from 'D:\eclipse workspace\jdo\war\WEB-INF\appengine-web.xml'
Sep 27, 2014 1:01:31 PM com.google.apphosting.utils.jetty.JettyLogger info
INFO: Logging to JettyLogger(null) via com.google.apphosting.utils.jetty.JettyLogger
Sep 27, 2014 1:01:31 PM com.google.apphosting.utils.jetty.JettyLogger info
INFO: jetty-6.1.x
Sep 27, 2014 1:01:36 PM com.google.appengine.tools.development.ApiProxyLocalImpl log
INFO: javax.servlet.ServletContext log: Initializing Spring FrameworkServlet 'spring-dispatcher'
Sep 27, 2014 1:01:36 PM org.springframework.web.servlet.FrameworkServlet initServletBean
INFO: FrameworkServlet 'spring-dispatcher': initialization started
Sep 27, 2014 1:01:36 PM org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing WebApplicationContext for namespace 'spring-dispatcher-servlet': startup date [Sat Sep 27 13:01:36 IST 2014]; root of context hierarchy
Sep 27, 2014 1:01:36 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from ServletContext resource [/WEB-INF/spring-dispatcher-servlet.xml]
Sep 27, 2014 1:01:39 PM org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider registerDefaultFilters
INFO: JSR-330 'javax.inject.Named' annotation found and supported for component scanning
Sep 27, 2014 1:01:41 PM org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor <init>
INFO: JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
Sep 27, 2014 1:01:41 PM org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@1080b7fd: defining beans [personcontroller,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,mvcContentNegotiationManager,org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping#0,org.springframework.format.support.FormattingConversionServiceFactoryBean#0,org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter#0,org.springframework.web.servlet.handler.MappedInterceptor#0,org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver#0,org.springframework.web.servlet.mvc.annotation.ResponseStatusExceptionResolver#0,org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver#0,org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping,org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter,org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter,org.springframework.web.servlet.view.InternalResourceViewResolver#0,org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor]; root of factory hierarchy
Sep 27, 2014 1:01:42 PM org.springframework.beans.factory.support.DefaultSingletonBeanRegistry destroySingletons
INFO: Destroying singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@1080b7fd: defining beans [personcontroller,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,mvcContentNegotiationManager,org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping#0,org.springframework.format.support.FormattingConversionServiceFactoryBean#0,org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter#0,org.springframework.web.servlet.handler.MappedInterceptor#0,org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver#0,org.springframework.web.servlet.mvc.annotation.ResponseStatusExceptionResolver#0,org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver#0,org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping,org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter,org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter,org.springframework.web.servlet.view.InternalResourceViewResolver#0,org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor]; root of factory hierarchy
Sep 27, 2014 1:01:42 PM org.springframework.web.servlet.FrameworkServlet initServletBean
SEVERE: Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'personcontroller' defined in file [D:\eclipse workspace\jdo\war\WEB-INF\classes\com\web\project\Personcontroller.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.web.project.Personcontroller]: Constructor threw exception; nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1011)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:957)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:490)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:607)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:647)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:598)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:661)
at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:517)
at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:458)
at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:138)
at javax.servlet.GenericServlet.init(GenericServlet.java:212)
at org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:440)
at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:263)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:685)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.Server.doStart(Server.java:224)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at com.google.appengine.tools.development.JettyContainerService.startContainer(JettyContainerService.java:255)
at com.google.appengine.tools.development.AbstractContainerService.startup(AbstractContainerService.java:288)
at com.google.appengine.tools.development.AutomaticInstanceHolder.startUp(AutomaticInstanceHolder.java:26)
at com.google.appengine.tools.development.AbstractModule.startup(AbstractModule.java:87)
at com.google.appengine.tools.development.Modules.startup(Modules.java:105)
at com.google.appengine.tools.development.DevAppServerImpl.doStart(DevAppServerImpl.java:258)
at com.google.appengine.tools.development.DevAppServerImpl.access$000(DevAppServerImpl.java:47)
at com.google.appengine.tools.development.DevAppServerImpl$1.run(DevAppServerImpl.java:213)
at com.google.appengine.tools.development.DevAppServerImpl$1.run(DevAppServerImpl.java:211)
at java.security.AccessController.doPrivileged(Native Method)
at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerImpl.java:211)
at com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:277)
at com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:48)
at com.google.appengine.tools.development.DevAppServerMain.run(DevAppServerMain.java:219)
at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:210)
Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.web.project.Personcontroller]: Constructor threw exception; nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:163)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$4.run(AbstractAutowireCapableBeanFactory.java:999)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:997)
... 46 more
Caused by: java.lang.ExceptionInInitializerError
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:190)
at com.google.appengine.tools.development.agent.runtime.RuntimeHelper.checkRestricted(RuntimeHelper.java:70)
at com.google.appengine.tools.development.agent.runtime.Runtime.checkRestricted(Runtime.java:64)
at com.web.project.Personcontroller.<init>(Personcontroller.java:23)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.google.appengine.tools.development.agent.runtime.Runtime.newInstance_(Runtime.java:127)
at com.google.appengine.tools.development.agent.runtime.Runtime.newInstance(Runtime.java:135)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:148)
... 50 more
Caused by: javax.jdo.JDOFatalUserException: A property named javax.jdo.PersistenceManagerFactoryClass must be specified, or a jar file with a META-INF/services/javax.jdo.PersistenceManagerFactory entry must be in the classpath, or a property named javax.jdo.option.PersistenceUnitName must be specified.
NestedThrowables:
javax.jdo.JDOUserException: PersistenceManagerFactory has been specified to use "persistence-unit" with name "transaction-optional" but none was found with that name
at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:861)
at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:1099)
at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:919)
at pmf.PMF.<clinit>(PMF.java:6)
... 62 more
Caused by: javax.jdo.JDOUserException: PersistenceManagerFactory has been specified to use "persistence-unit" with name "transaction-optional" but none was found with that name
at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.<init>(JDOPersistenceManagerFactory.java:441)
at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.createPersistenceManagerFactory(JDOPersistenceManagerFactory.java:294)
at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.getPersistenceManagerFactory(JDOPersistenceManagerFactory.java:195)
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:606)
at com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:115)
at javax.jdo.JDOHelper$16.run(JDOHelper.java:1965)
at java.security.AccessController.doPrivileged(Native Method)
at javax.jdo.JDOHelper.invoke(JDOHelper.java:1960)
at javax.jdo.JDOHelper.invokeGetPersistenceManagerFactoryOnImplementation(JDOHelper.java:1166)
at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:844)
... 65 more
Sep 27, 2014 1:01:42 PM com.google.appengine.tools.development.ApiProxyLocalImpl log
SEVERE: javax.servlet.ServletContext log: unavailable
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'personcontroller' defined in file [D:\eclipse workspace\jdo\war\WEB-INF\classes\com\web\project\Personcontroller.class]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.web.project.Personcontroller]: Constructor threw exception; nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1011)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:957)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:490)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:461)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:292)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:607)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:647)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:598)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:661)
at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:517)
at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:458)
at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:138)
at javax.servlet.GenericServlet.init(GenericServlet.java:212)
at org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:440)
at org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:263)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:685)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.Server.doStart(Server.java:224)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at com.google.appengine.tools.development.JettyContainerService.startContainer(JettyContainerService.java:255)
at com.google.appengine.tools.development.AbstractContainerService.startup(AbstractContainerService.java:288)
at com.google.appengine.tools.development.AutomaticInstanceHolder.startUp(AutomaticInstanceHolder.java:26)
at com.google.appengine.tools.development.AbstractModule.startup(AbstractModule.java:87)
at com.google.appengine.tools.development.Modules.startup(Modules.java:105)
at com.google.appengine.tools.development.DevAppServerImpl.doStart(DevAppServerImpl.java:258)
at com.google.appengine.tools.development.DevAppServerImpl.access$000(DevAppServerImpl.java:47)
at com.google.appengine.tools.development.DevAppServerImpl$1.run(DevAppServerImpl.java:213)
at com.google.appengine.tools.development.DevAppServerImpl$1.run(DevAppServerImpl.java:211)
at java.security.AccessController.doPrivileged(Native Method)
at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerImpl.java:211)
at com.google.appengine.tools.development.DevAppServerMain$StartAction.apply(DevAppServerMain.java:277)
at com.google.appengine.tools.util.Parser$ParseResult.applyArgs(Parser.java:48)
at com.google.appengine.tools.development.DevAppServerMain.run(DevAppServerMain.java:219)
at com.google.appengine.tools.development.DevAppServerMain.main(DevAppServerMain.java:210)
Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.web.project.Personcontroller]: Constructor threw exception; nested exception is java.lang.ExceptionInInitializerError
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:163)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:87)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$4.run(AbstractAutowireCapableBeanFactory.java:999)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:997)
... 46 more
Caused by: java.lang.ExceptionInInitializerError
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:190)
at com.google.appengine.tools.development.agent.runtime.RuntimeHelper.checkRestricted(RuntimeHelper.java:70)
at com.google.appengine.tools.development.agent.runtime.Runtime.checkRestricted(Runtime.java:64)
at com.web.project.Personcontroller.<init>(Personcontroller.java:23)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.google.appengine.tools.development.agent.runtime.Runtime.newInstance_(Runtime.java:127)
at com.google.appengine.tools.development.agent.runtime.Runtime.newInstance(Runtime.java:135)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:148)
... 50 more
Caused by: javax.jdo.JDOFatalUserException: A property named javax.jdo.PersistenceManagerFactoryClass must be specified, or a jar file with a META-INF/services/javax.jdo.PersistenceManagerFactory entry must be in the classpath, or a property named javax.jdo.option.PersistenceUnitName must be specified.
NestedThrowables:
javax.jdo.JDOUserException: PersistenceManagerFactory has been specified to use "persistence-unit" with name "transaction-optional" but none was found with that name
at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:861)
at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:1099)
at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:919)
at pmf.PMF.<clinit>(PMF.java:6)
... 62 more
Caused by: javax.jdo.JDOUserException: PersistenceManagerFactory has been specified to use "persistence-unit" with name "transaction-optional" but none was found with that name
at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.<init>(JDOPersistenceManagerFactory.java:441)
at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.createPersistenceManagerFactory(JDOPersistenceManagerFactory.java:294)
at org.datanucleus.api.jdo.JDOPersistenceManagerFactory.getPersistenceManagerFactory(JDOPersistenceManagerFactory.java:195)
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:606)
at com.google.appengine.tools.development.agent.runtime.Runtime.invoke(Runtime.java:115)
at javax.jdo.JDOHelper$16.run(JDOHelper.java:1965)
at java.security.AccessController.doPrivileged(Native Method)
at javax.jdo.JDOHelper.invoke(JDOHelper.java:1960)
at javax.jdo.JDOHelper.invokeGetPersistenceManagerFactoryOnImplementation(JDOHelper.java:1166)
at javax.jdo.JDOHelper.getPersistenceManagerFactory(JDOHelper.java:844)
... 65 more
Sep 27, 2014 1:01:42 PM com.google.apphosting.utils.jetty.JettyLogger info
INFO: Started SelectChannelConnector@127.0.0.1:8888
Sep 27, 2014 1:01:42 PM com.google.appengine.tools.development.AbstractModule startup
INFO: Module instance default is running at http://localhost:8888/
Sep 27, 2014 1:01:42 PM com.google.appengine.tools.development.AbstractModule startup
INFO: The admin console is running at http://localhost:8888/_ah/admin
Sep 27, 2014 1:01:42 PM com.google.appengine.tools.development.DevAppServerImpl doStart
INFO: Dev App Server is now running
我的网络结果:HTTP ERROR 500 Powered by Jetty://
最佳答案
javax.jdo.JDOUserException:PersistenceManagerFactory 已被指定使用名称为“transaction-Optional”的“persistence-unit”，但没有找到该名称的“”非常明确。您要么具有持久性.xml 位于错误的位置(应位于 CLASSPATH 根目录的 META-INF 下)，或者它不包含该持久性单元，或者格式无效。
关于java - 如何查找 Eclipse kepler 上的 spring MVC/JDO 在运行时出现的错误确实是由于库丢失或程序错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/26072554/