当我尝试使用 JPA 将记录添加到我的数据库时，我遇到了这个奇怪的错误。我以前使用相同的技术在不同的表中添加其他记录。我不明白我得到的错误。
Warning: A system exception occurred during an invocation on EJB HelpRequestBean, method: public void sessionBeans.HelpRequestBean.assignHelpRequest(transferClasses.HelpRequestDetails,int)
Warning: javax.ejb.EJBException
at com.sun.ejb.containers.EJBContainerTransactionManager.processSystemException(EJBContainerTransactionManager.java:750)
at com.sun.ejb.containers.EJBContainerTransactionManager.completeNewTx(EJBContainerTransactionManager.java:700)
at com.sun.ejb.containers.EJBContainerTransactionManager.postInvokeTx(EJBContainerTransactionManager.java:505)
at com.sun.ejb.containers.BaseContainer.postInvokeTx(BaseContainer.java:4538)
at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:2019)
at com.sun.ejb.containers.BaseContainer.postInvoke(BaseContainer.java:1989)
at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:212)
at com.sun.ejb.containers.EJBObjectInvocationHandlerDelegate.invoke(EJBObjectInvocationHandlerDelegate.java:79)
at com.sun.proxy.$Proxy334.assignHelpRequest(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie.dispatchToMethod(ReflectiveTie.java:143)
at com.sun.corba.ee.impl.presentation.rmi.ReflectiveTie._invoke(ReflectiveTie.java:173)
at com.sun.corba.ee.impl.protocol.ServerRequestDispatcherImpl.dispatchToServant(ServerRequestDispatcherImpl.java:528)
at com.sun.corba.ee.impl.protocol.ServerRequestDispatcherImpl.dispatch(ServerRequestDispatcherImpl.java:199)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleRequestRequest(MessageMediatorImpl.java:1549)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleRequest(MessageMediatorImpl.java:1425)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleInput(MessageMediatorImpl.java:930)
at com.sun.corba.ee.impl.protocol.giopmsgheaders.RequestMessage_1_2.callback(RequestMessage_1_2.java:213)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.handleRequest(MessageMediatorImpl.java:694)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.dispatch(MessageMediatorImpl.java:496)
at com.sun.corba.ee.impl.protocol.MessageMediatorImpl.doWork(MessageMediatorImpl.java:2222)
at com.sun.corba.ee.impl.threadpool.ThreadPoolImpl$WorkerThread.performWork(ThreadPoolImpl.java:497)
at com.sun.corba.ee.impl.threadpool.ThreadPoolImpl$WorkerThread.run(ThreadPoolImpl.java:540)
Caused by: javax.validation.ValidationException: HV000032: Unable to initialize org.hibernate.validator.internal.constraintvalidators.SizeValidatorForCharSequence.
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintValidatorManager.initializeConstraint(ConstraintValidatorManager.java:248)
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintValidatorManager.createAndInitializeValidator(ConstraintValidatorManager.java:147)
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintValidatorManager.getInitializedValidator(ConstraintValidatorManager.java:101)
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints(ConstraintTree.java:125)
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintTree.validateConstraints(ConstraintTree.java:91)
at org.hibernate.validator.internal.metadata.core.MetaConstraint.validateConstraint(MetaConstraint.java:83)
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraint(ValidatorImpl.java:547)
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForDefaultGroup(ValidatorImpl.java:487)
at org.hibernate.validator.internal.engine.ValidatorImpl.validateConstraintsForCurrentGroup(ValidatorImpl.java:451)
at org.hibernate.validator.internal.engine.ValidatorImpl.validateInContext(ValidatorImpl.java:403)
at org.hibernate.validator.internal.engine.ValidatorImpl.validate(ValidatorImpl.java:206)
at org.eclipse.persistence.internal.jpa.metadata.listeners.BeanValidationListener.validateOnCallbackEvent(BeanValidationListener.java:104)
at org.eclipse.persistence.internal.jpa.metadata.listeners.BeanValidationListener.prePersist(BeanValidationListener.java:78)
at org.eclipse.persistence.descriptors.DescriptorEventManager.notifyListener(DescriptorEventManager.java:748)
at org.eclipse.persistence.descriptors.DescriptorEventManager.notifyEJB30Listeners(DescriptorEventManager.java:691)
at org.eclipse.persistence.descriptors.DescriptorEventManager.executeEvent(DescriptorEventManager.java:229)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNewObjectClone(UnitOfWorkImpl.java:4314)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNotRegisteredNewObjectForPersist(UnitOfWorkImpl.java:4291)
at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.registerNotRegisteredNewObjectForPersist(RepeatableWriteUnitOfWork.java:521)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNewObjectForPersist(UnitOfWorkImpl.java:4233)
at org.eclipse.persistence.internal.jpa.EntityManagerImpl.persist(EntityManagerImpl.java:507)
at com.sun.enterprise.container.common.impl.EntityManagerWrapper.persist(EntityManagerWrapper.java:287)
at sessionBeans.HelpRequestBean.assignHelpRequest(HelpRequestBean.java:59)
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:497)
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:4758)
at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:656)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:836)
at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:608)
at org.jboss.weld.ejb.AbstractEJBRequestScopeActivationInterceptor.aroundInvoke(AbstractEJBRequestScopeActivationInterceptor.java:73)
at org.jboss.weld.ejb.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:52)
at sun.reflect.GeneratedMethodAccessor232.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:895)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:835)
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.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:497)
at com.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:895)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:835)
at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:374)
at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:4730)
at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:4718)
at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:205)
... 19 more
Caused by: java.lang.IllegalArgumentException: HV000021: The length cannot be negative.
at org.hibernate.validator.internal.constraintvalidators.SizeValidatorForCharSequence.validateParameters(SizeValidatorForCharSequence.java:71)
at org.hibernate.validator.internal.constraintvalidators.SizeValidatorForCharSequence.initialize(SizeValidatorForCharSequence.java:43)
at org.hibernate.validator.internal.constraintvalidators.SizeValidatorForCharSequence.initialize(SizeValidatorForCharSequence.java:33)
at org.hibernate.validator.internal.engine.constraintvalidation.ConstraintValidatorManager.initializeConstraint(ConstraintValidatorManager.java:245)
... 71 more
以下代码：
@Override
public void assignHelpRequest(HelpRequestDetails helprequest, int userID) {
//Helpreply reply = new Helpreply(Integer.MAX_VALUE, "", "", new Date());
Helpreply reply = new Helpreply();
reply.setRequestID(em.find(Helprequest.class, helprequest.getRequestID()));
reply.setUserID(em.find(Users.class, userID));
em.persist(reply);
Helprequest request = em.find(Helprequest.class, helprequest.getRequestID());
request.setStatus(1);
em.merge(request);
}
帮助回复实体类。
package database;
import java.io.Serializable;
import java.util.Date;
import javax.persistence.Basic;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
import javax.xml.bind.annotation.XmlRootElement;
/**
*
* @author Christian
*/
@Entity
@Table(name = "helpreply")
@XmlRootElement
@NamedQueries({
@NamedQuery(name = "Helpreply.findAll", query = "SELECT h FROM Helpreply h"),
@NamedQuery(name = "Helpreply.findByReplyID", query = "SELECT h FROM Helpreply h WHERE h.replyID = :replyID"),
@NamedQuery(name = "Helpreply.findByTitle", query = "SELECT h FROM Helpreply h WHERE h.title = :title"),
@NamedQuery(name = "Helpreply.findByContent", query = "SELECT h FROM Helpreply h WHERE h.content = :content"),
@NamedQuery(name = "Helpreply.findByCreationDate", query = "SELECT h FROM Helpreply h WHERE h.creationDate = :creationDate")})
public class Helpreply implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Basic(optional = false)
@Column(name = "replyID")
private Integer replyID;
@Basic(optional = false)
@NotNull
@Size(min = 1, max = 0)
@Column(name = "title")
private String title;
@Basic(optional = false)
@NotNull
@Size(min = 1, max = 0)
@Column(name = "content")
private String content;
@Basic(optional = false)
@NotNull
@Column(name = "creationDate")
@Temporal(TemporalType.DATE)
private Date creationDate;
@JoinColumn(name = "userID", referencedColumnName = "userID")
@ManyToOne(optional = false)
private Users userID;
@JoinColumn(name = "requestID", referencedColumnName = "requestID")
@ManyToOne(optional = false)
private Helprequest requestID;
public Helpreply() {
}
public Helpreply(Integer replyID) {
this.replyID = replyID;
}
public Helpreply(Integer replyID, String title, String content, Date creationDate) {
this.replyID = replyID;
this.title = title;
this.content = content;
this.creationDate = creationDate;
}
public Integer getReplyID() {
return replyID;
}
public void setReplyID(Integer replyID) {
this.replyID = replyID;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
public Date getCreationDate() {
return creationDate;
}
public void setCreationDate(Date creationDate) {
this.creationDate = creationDate;
}
public Users getUserID() {
return userID;
}
public void setUserID(Users userID) {
this.userID = userID;
}
public Helprequest getRequestID() {
return requestID;
}
public void setRequestID(Helprequest requestID) {
this.requestID = requestID;
}
@Override
public int hashCode() {
int hash = 0;
hash += (replyID != null ? replyID.hashCode() : 0);
return hash;
}
@Override
public boolean equals(Object object) {
// TODO: Warning - this method won't work in the case the id fields are not set
if (!(object instanceof Helpreply)) {
return false;
}
Helpreply other = (Helpreply) object;
if ((this.replyID == null && other.replyID != null) || (this.replyID != null && !this.replyID.equals(other.replyID))) {
return false;
}
return true;
}
@Override
public String toString() {
return "database.Helpreply[ replyID=" + replyID + " ]";
}
}