javax.persistence.PersistenceException: org.hibernate.PropertyAccessException: 无法通过 Entity.id 的反射获取器获取字段值
javax.persistence.PersistenceException: org.hibernate.PropertyAccessException: could not get a field value by reflection getter of Entity.id
我有以下实体：
@Entity
public class Employee implements Serializable{
private static final long serialVersionUID = 3454567L;
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private int empId;
@Column
private String username;
public int getEmpId() {
return empId;
}
public void setEmpId(int empId) {
this.empId = empId;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
}
以及以下 EJB：
public class UserDAO implements UserDAOInterface{
@PersistenceContext(unitName = "MainPersistenceUnit")
private EntityManager em;
@Override
public void persist(Employee sdf) {
try {
em.persist(sdf);
} catch (Exception e) {
Logger.getLogger(getClass().getName()).log(Level.SEVERE, "exception caught", e);
throw new RuntimeException(e);
}
}
}
调用 persist 时，抛出异常，其根本原因如下：
Caused by: org.hibernate.PropertyAccessException: could not get a field value by reflection getter of com.mine.projs.library.entity.Employee.empId
at org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:60)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:346)
at org.hibernate.persister.entity.AbstractEntityPersister.getIdentifier(AbstractEntityPersister.java:4746)
at org.hibernate.persister.entity.AbstractEntityPersister.isTransient(AbstractEntityPersister.java:4465)
at org.hibernate.engine.internal.ForeignKeys.isTransient(ForeignKeys.java:243)
at org.hibernate.event.internal.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:511)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:116)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:75)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:811)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:784)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:789)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1181)
... 100 more
这是 GlassFish 4.1 的完整日志：
Info: HHH000204: Processing PersistenceUnitInfo [
name: MainPersistenceUnit
...]
Info: HHH000412: Hibernate Core {4.3.7.Final}
Info: HHH000206: hibernate.properties not found
Info: HHH000021: Bytecode provider name : javassist
Info: HCANN000001: Hibernate Commons Annotations {4.0.5.Final}
Info: HHH000400: Using dialect: org.hibernate.dialect.MySQL5InnoDBDialect
Info: HHH000397: Using ASTQueryTranslatorFactory
Info: HHH000227: Running hbm2ddl schema export
Info: Hibernate: drop table if exists Employee
Info: Hibernate: create table Employee (empId integer not null auto_increment, username varchar(255), primary key (empId)) ENGINE=InnoDB
Info: HHH000230: Schema export complete
Info: Portable JNDI names for EJB UserService: [java:global/Library/UserService, java:global/Library/UserService!com.mine.projs.library.service.interfaces.UserServiceInterface]
WARN: WELD-000411: Observer method [BackedAnnotatedMethod] private org.glassfish.jersey.gf.cdi.internal.CdiComponentProvider.processAnnotatedType(@Observes ProcessAnnotatedType<Object>) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds.
WARN: WELD-000411: Observer method [BackedAnnotatedMethod] public org.glassfish.jms.injection.JMSCDIExtension.processAnnotatedType(@Observes ProcessAnnotatedType<Object>) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds.
WARN: WELD-000411: Observer method [BackedAnnotatedMethod] org.glassfish.sse.impl.ServerSentEventCdiExtension.processAnnotatedType(@Observes ProcessAnnotatedType<Object>, BeanManager) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds.
Info: Initializing Mojarra 2.2.7 ( 20140610-1547 https://svn.java.net/svn/mojarra~svn/tags/2.2.7@13362) for context '/libr'
Info: Running on PrimeFaces 5.1
Info: Loading application [Library] at [/libr]
Info: Library was successfully deployed in 3,429 milliseconds.
Info: inside getAna
Info: inside Create User
Severe: exception caught
javax.persistence.PersistenceException: org.hibernate.PropertyAccessException: could not get a field value by reflection getter of com.mine.projs.library.entity.Employee.empId
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1763)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1677)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1683)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1187)
at com.sun.enterprise.container.common.impl.EntityManagerWrapper.persist(EntityManagerWrapper.java:287)
at com.mine.projs.library.dao.UserDAO.persist(UserDAO.java:20)
at com.mine.projs.library.service.UserService.createUSer(UserService.java:21)
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:483)
at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1081)
at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1153)
at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:4786)
at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:656)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:608)
at org.jboss.weld.ejb.AbstractEJBRequestScopeActivationInterceptor.aroundInvoke(AbstractEJBRequestScopeActivationInterceptor.java:46)
at org.jboss.weld.ejb.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:52)
at sun.reflect.GeneratedMethodAccessor103.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:883)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:608)
at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doCall(SystemInterceptorProxy.java:163)
at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:140)
at sun.reflect.GeneratedMethodAccessor151.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:883)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:369)
at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:4758)
at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:4746)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:212)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)
at com.sun.proxy.$Proxy321.createUSer(Unknown Source)
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:483)
at org.jboss.weld.util.reflection.Reflections.invokeAndUnwrap(Reflections.java:414)
at org.jboss.weld.bean.proxy.EnterpriseBeanProxyMethodHandler.invoke(EnterpriseBeanProxyMethodHandler.java:127)
at org.jboss.weld.bean.proxy.EnterpriseTargetBeanInstance.invoke(EnterpriseTargetBeanInstance.java:56)
at org.jboss.weld.bean.proxy.InjectionPointPropagatingEnterpriseTargetBeanInstance.invoke(InjectionPointPropagatingEnterpriseTargetBeanInstance.java:65)
at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:100)
at com.mine.projs.library.service.UserServiceInterface3194531$Proxy$_$_Weld$EnterpriseProxy$.createUSer(Unknown Source)
at com.mine.projs.library.view.UserBean.getAna(UserBean.java:29)
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:483)
at javax.el.BeanELResolver.getValue(BeanELResolver.java:363)
at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176)
at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203)
at com.sun.el.parser.AstValue.getValue(AstValue.java:140)
at com.sun.el.parser.AstValue.getValue(AstValue.java:204)
at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:226)
at org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50)
at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194)
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182)
at javax.faces.component.UICommand.getValue(UICommand.java:218)
at com.sun.faces.renderkit.html_basic.ButtonRenderer.encodeBegin(ButtonRenderer.java:119)
at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:864)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1854)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:456)
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:133)
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:415)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:282)
at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:201)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:175)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
at org.glassfish.grizzly.filterchain.ExecutorResolver.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:561)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access0(WorkerThreadIOStrategy.java:56)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:565)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:545)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.hibernate.PropertyAccessException: could not get a field value by reflection getter of com.mine.projs.library.entity.Employee.empId
at org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:60)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:346)
at org.hibernate.persister.entity.AbstractEntityPersister.getIdentifier(AbstractEntityPersister.java:4746)
at org.hibernate.persister.entity.AbstractEntityPersister.isTransient(AbstractEntityPersister.java:4465)
at org.hibernate.engine.internal.ForeignKeys.isTransient(ForeignKeys.java:243)
at org.hibernate.event.internal.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:511)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:116)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:75)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:811)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:784)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:789)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1181)
... 100 more
这是怎么引起的，我该如何解决？
您的 class 应该使用像
这样的注释将字段映射到 table 列
@Entity
@Table(name="employee")
public class Employee implements Serializable{
private static final long serialVersionUID = 3454567L;
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
@cloumn(name="emp_id")
private int empId;
@Column(name="user_name")
private String username;
public int getEmpId() {
return empId;
}
public void setEmpId(int empId) {
this.empId = empId;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
}
可能是 Hibernate 的问题。
The following exception is thrown when trying to persist a new "Product" entity (see test case) by Hibernate 4.3.6.FINAL. However, it works perfectly fine if I change the maven dependency to 4.3.5.FINAL without touching any other piece of code.
所以我建议把Hibernate的版本改成4.3.5。我遇到了同样的问题并已解决。
我也有同样的问题。这个bug好像是从HB 4.3.6开始的，一直存在，我正在尝试4.3.10；结果相同。
在我看来，访问实体字段的方式在 HB 4.3.6+ 中发生了变化，可能与 class 加载程序有关。在 HB 4.3.6 之前，将 DB 驱动程序 jar 文件嵌入到 ear 文件中效果很好（部署非常简单和干净）。 4.3.6以后就不行了（出现class not found异常），现在驱动jar文件必须放在Glassfish的lib文件夹下。
胡安
这来自 classloader 问题，当部署时休眠加载初始 class 时，会创建一个虚拟 classLoader 来构建目录。当您在运行时，目录中的 class 没有相同的 class 加载程序，并且 sun.reflect.UnsafeFieldAccessorImpl.ensureObj 的方法失败。
protected void ensureObj(Object obj)
{
if(!field.getDeclaringClass().isAssignableFrom(obj.getClass()))
{
throwSetIllegalArgumentException(obj);
}
}
此方法是从 DirectPropertyAccessor$DirectGetter.get(Object) 行调用的：57
我解决了 glassfish 4.1 和 hibernate-entitymanager-4.3.11.Final.jar 中的问题，方法是创建一个自定义 jpa 提供程序，该提供程序附加了正确的 class 加载程序。
package org.hibernate.jpa;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.Map;
import javax.persistence.EntityManagerFactory;
import javax.persistence.spi.PersistenceUnitInfo;
import org.hibernate.jpa.HibernatePersistenceProvider;
/**
* Lazy HibernatePersistenceProvider whose take Thread class loader as source
* and not the dummy one
*
* @author Alexandre Heroux
*
*/
public class LazyHibernatePersistenceProvider extends HibernatePersistenceProvider {
@SuppressWarnings("rawtypes")
@Override
public EntityManagerFactory createContainerEntityManagerFactory(final PersistenceUnitInfo info,
final Map properties) {
return (EntityManagerFactory) Proxy.newProxyInstance(Thread.currentThread().getContextClassLoader(),
new Class[] { EntityManagerFactory.class }, new InvocationHandler() {
private EntityManagerFactory entityManagerFactory = null;
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
return method.invoke(getEntityManagerFactory(info, properties), args);
}
/**
* Create the EntityManagerFactory when is not exists
*
* @param info
* @param properties
* @return
*/
protected EntityManagerFactory getEntityManagerFactory(PersistenceUnitInfo info, Map properties) {
if (entityManagerFactory == null) {
synchronized (this) {
if (entityManagerFactory == null) {
entityManagerFactory = LazyHibernatePersistenceProvider.this
.createParentContainerEntityManagerFactory(info, properties);
}
}
}
return entityManagerFactory;
}
});
}
/**
* Call parent method
*
* @param info
* @param properties
* @return
*/
protected EntityManagerFactory createParentContainerEntityManagerFactory(PersistenceUnitInfo info, Map properties) {
return super.createContainerEntityManagerFactory(info, properties);
}
}
我有以下实体：
@Entity
public class Employee implements Serializable{
private static final long serialVersionUID = 3454567L;
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private int empId;
@Column
private String username;
public int getEmpId() {
return empId;
}
public void setEmpId(int empId) {
this.empId = empId;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
}
以及以下 EJB：
public class UserDAO implements UserDAOInterface{
@PersistenceContext(unitName = "MainPersistenceUnit")
private EntityManager em;
@Override
public void persist(Employee sdf) {
try {
em.persist(sdf);
} catch (Exception e) {
Logger.getLogger(getClass().getName()).log(Level.SEVERE, "exception caught", e);
throw new RuntimeException(e);
}
}
}
调用 persist 时，抛出异常，其根本原因如下：
Caused by: org.hibernate.PropertyAccessException: could not get a field value by reflection getter of com.mine.projs.library.entity.Employee.empId
at org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:60)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:346)
at org.hibernate.persister.entity.AbstractEntityPersister.getIdentifier(AbstractEntityPersister.java:4746)
at org.hibernate.persister.entity.AbstractEntityPersister.isTransient(AbstractEntityPersister.java:4465)
at org.hibernate.engine.internal.ForeignKeys.isTransient(ForeignKeys.java:243)
at org.hibernate.event.internal.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:511)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:116)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:75)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:811)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:784)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:789)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1181)
... 100 more
这是 GlassFish 4.1 的完整日志：
Info: HHH000204: Processing PersistenceUnitInfo [
name: MainPersistenceUnit
...]
Info: HHH000412: Hibernate Core {4.3.7.Final}
Info: HHH000206: hibernate.properties not found
Info: HHH000021: Bytecode provider name : javassist
Info: HCANN000001: Hibernate Commons Annotations {4.0.5.Final}
Info: HHH000400: Using dialect: org.hibernate.dialect.MySQL5InnoDBDialect
Info: HHH000397: Using ASTQueryTranslatorFactory
Info: HHH000227: Running hbm2ddl schema export
Info: Hibernate: drop table if exists Employee
Info: Hibernate: create table Employee (empId integer not null auto_increment, username varchar(255), primary key (empId)) ENGINE=InnoDB
Info: HHH000230: Schema export complete
Info: Portable JNDI names for EJB UserService: [java:global/Library/UserService, java:global/Library/UserService!com.mine.projs.library.service.interfaces.UserServiceInterface]
WARN: WELD-000411: Observer method [BackedAnnotatedMethod] private org.glassfish.jersey.gf.cdi.internal.CdiComponentProvider.processAnnotatedType(@Observes ProcessAnnotatedType<Object>) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds.
WARN: WELD-000411: Observer method [BackedAnnotatedMethod] public org.glassfish.jms.injection.JMSCDIExtension.processAnnotatedType(@Observes ProcessAnnotatedType<Object>) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds.
WARN: WELD-000411: Observer method [BackedAnnotatedMethod] org.glassfish.sse.impl.ServerSentEventCdiExtension.processAnnotatedType(@Observes ProcessAnnotatedType<Object>, BeanManager) receives events for all annotated types. Consider restricting events using @WithAnnotations or a generic type with bounds.
Info: Initializing Mojarra 2.2.7 ( 20140610-1547 https://svn.java.net/svn/mojarra~svn/tags/2.2.7@13362) for context '/libr'
Info: Running on PrimeFaces 5.1
Info: Loading application [Library] at [/libr]
Info: Library was successfully deployed in 3,429 milliseconds.
Info: inside getAna
Info: inside Create User
Severe: exception caught
javax.persistence.PersistenceException: org.hibernate.PropertyAccessException: could not get a field value by reflection getter of com.mine.projs.library.entity.Employee.empId
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1763)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1677)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1683)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1187)
at com.sun.enterprise.container.common.impl.EntityManagerWrapper.persist(EntityManagerWrapper.java:287)
at com.mine.projs.library.dao.UserDAO.persist(UserDAO.java:20)
at com.mine.projs.library.service.UserService.createUSer(UserService.java:21)
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:483)
at org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1081)
at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1153)
at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:4786)
at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:656)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:608)
at org.jboss.weld.ejb.AbstractEJBRequestScopeActivationInterceptor.aroundInvoke(AbstractEJBRequestScopeActivationInterceptor.java:46)
at org.jboss.weld.ejb.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:52)
at sun.reflect.GeneratedMethodAccessor103.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:883)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:608)
at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doCall(SystemInterceptorProxy.java:163)
at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:140)
at sun.reflect.GeneratedMethodAccessor151.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:883)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:822)
at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:369)
at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:4758)
at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:4746)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:212)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:88)
at com.sun.proxy.$Proxy321.createUSer(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.jboss.weld.util.reflection.Reflections.invokeAndUnwrap(Reflections.java:414)
at org.jboss.weld.bean.proxy.EnterpriseBeanProxyMethodHandler.invoke(EnterpriseBeanProxyMethodHandler.java:127)
at org.jboss.weld.bean.proxy.EnterpriseTargetBeanInstance.invoke(EnterpriseTargetBeanInstance.java:56)
at org.jboss.weld.bean.proxy.InjectionPointPropagatingEnterpriseTargetBeanInstance.invoke(InjectionPointPropagatingEnterpriseTargetBeanInstance.java:65)
at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:100)
at com.mine.projs.library.service.UserServiceInterface3194531$Proxy$_$_Weld$EnterpriseProxy$.createUSer(Unknown Source)
at com.mine.projs.library.view.UserBean.getAna(UserBean.java:29)
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:483)
at javax.el.BeanELResolver.getValue(BeanELResolver.java:363)
at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176)
at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203)
at com.sun.el.parser.AstValue.getValue(AstValue.java:140)
at com.sun.el.parser.AstValue.getValue(AstValue.java:204)
at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:226)
at org.jboss.weld.el.WeldValueExpression.getValue(WeldValueExpression.java:50)
at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:109)
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:194)
at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:182)
at javax.faces.component.UICommand.getValue(UICommand.java:218)
at com.sun.faces.renderkit.html_basic.ButtonRenderer.encodeBegin(ButtonRenderer.java:119)
at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:864)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1854)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1859)
at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:456)
at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:133)
at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:337)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:120)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:219)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:647)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:415)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:282)
at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:201)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:175)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
at org.glassfish.grizzly.filterchain.ExecutorResolver.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:561)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access0(WorkerThreadIOStrategy.java:56)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:565)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:545)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.hibernate.PropertyAccessException: could not get a field value by reflection getter of com.mine.projs.library.entity.Employee.empId
at org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:60)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.getIdentifier(AbstractEntityTuplizer.java:346)
at org.hibernate.persister.entity.AbstractEntityPersister.getIdentifier(AbstractEntityPersister.java:4746)
at org.hibernate.persister.entity.AbstractEntityPersister.isTransient(AbstractEntityPersister.java:4465)
at org.hibernate.engine.internal.ForeignKeys.isTransient(ForeignKeys.java:243)
at org.hibernate.event.internal.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:511)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:116)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:75)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:811)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:784)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:789)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1181)
... 100 more
这是怎么引起的，我该如何解决？
您的 class 应该使用像
这样的注释将字段映射到 table 列@Entity
@Table(name="employee")
public class Employee implements Serializable{
private static final long serialVersionUID = 3454567L;
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
@cloumn(name="emp_id")
private int empId;
@Column(name="user_name")
private String username;
public int getEmpId() {
return empId;
}
public void setEmpId(int empId) {
this.empId = empId;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
}
可能是 Hibernate 的问题。
The following exception is thrown when trying to persist a new "Product" entity (see test case) by Hibernate 4.3.6.FINAL. However, it works perfectly fine if I change the maven dependency to 4.3.5.FINAL without touching any other piece of code.
所以我建议把Hibernate的版本改成4.3.5。我遇到了同样的问题并已解决。
我也有同样的问题。这个bug好像是从HB 4.3.6开始的，一直存在，我正在尝试4.3.10；结果相同。
在我看来，访问实体字段的方式在 HB 4.3.6+ 中发生了变化，可能与 class 加载程序有关。在 HB 4.3.6 之前，将 DB 驱动程序 jar 文件嵌入到 ear 文件中效果很好（部署非常简单和干净）。 4.3.6以后就不行了（出现class not found异常），现在驱动jar文件必须放在Glassfish的lib文件夹下。
胡安
这来自 classloader 问题，当部署时休眠加载初始 class 时，会创建一个虚拟 classLoader 来构建目录。当您在运行时，目录中的 class 没有相同的 class 加载程序，并且 sun.reflect.UnsafeFieldAccessorImpl.ensureObj 的方法失败。
protected void ensureObj(Object obj)
{
if(!field.getDeclaringClass().isAssignableFrom(obj.getClass()))
{
throwSetIllegalArgumentException(obj);
}
}
此方法是从 DirectPropertyAccessor$DirectGetter.get(Object) 行调用的：57
我解决了 glassfish 4.1 和 hibernate-entitymanager-4.3.11.Final.jar 中的问题，方法是创建一个自定义 jpa 提供程序，该提供程序附加了正确的 class 加载程序。
package org.hibernate.jpa;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.Map;
import javax.persistence.EntityManagerFactory;
import javax.persistence.spi.PersistenceUnitInfo;
import org.hibernate.jpa.HibernatePersistenceProvider;
/**
* Lazy HibernatePersistenceProvider whose take Thread class loader as source
* and not the dummy one
*
* @author Alexandre Heroux
*
*/
public class LazyHibernatePersistenceProvider extends HibernatePersistenceProvider {
@SuppressWarnings("rawtypes")
@Override
public EntityManagerFactory createContainerEntityManagerFactory(final PersistenceUnitInfo info,
final Map properties) {
return (EntityManagerFactory) Proxy.newProxyInstance(Thread.currentThread().getContextClassLoader(),
new Class[] { EntityManagerFactory.class }, new InvocationHandler() {
private EntityManagerFactory entityManagerFactory = null;
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
return method.invoke(getEntityManagerFactory(info, properties), args);
}
/**
* Create the EntityManagerFactory when is not exists
*
* @param info
* @param properties
* @return
*/
protected EntityManagerFactory getEntityManagerFactory(PersistenceUnitInfo info, Map properties) {
if (entityManagerFactory == null) {
synchronized (this) {
if (entityManagerFactory == null) {
entityManagerFactory = LazyHibernatePersistenceProvider.this
.createParentContainerEntityManagerFactory(info, properties);
}
}
}
return entityManagerFactory;
}
});
}
/**
* Call parent method
*
* @param info
* @param properties
* @return
*/
protected EntityManagerFactory createParentContainerEntityManagerFactory(PersistenceUnitInfo info, Map properties) {
return super.createContainerEntityManagerFactory(info, properties);
}
}