我想将实体对象持久化到包含一些空值的数据库，其中一个空值是另一个表的foregin键，我必须在以后填充它，这里是sessionbean
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package boudy.sessionbeans;
import boudy.entity.Customer;
import boudy.entity.Request;
import java.util.List;
import javax.annotation.Resource;
import javax.ejb.Stateless;
import javax.ejb.TransactionManagement;
import javax.ejb.TransactionManagementType;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import javax.transaction.UserTransaction;
/**
*
* @author magas
*/
@Stateless
@TransactionManagement(TransactionManagementType.BEAN)
public class RequestBean implements RequestBeanLocal {
@PersistenceContext(unitName = "InternetCompany-ejbPU")
private EntityManager em;
@Resource
private UserTransaction userTransaction;
// Add business logic below. (Right-click in editor and choose
// "Insert Code > Add Business Method")
public void persist(Object object) {
em.persist(object);
}
@Override
public boolean addNewCustomer() {
throw new UnsupportedOperationException("Not supported yet.");
}
@Override
public boolean addNewRequest(Request requestObject) {
try {
userTransaction.begin();
em.persist(requestObject);
userTransaction.commit();
em.close();
return true;
} catch (Exception e) {
System.out.println(e.getMessage());
return false;
}
}
@Override
public List<Customer> getAllCustomers() {
List<Customer> custList = null;
try {
Query query = em.createNamedQuery("Customer.findAll");
custList = query.getResultList();
} catch (Exception e) {
System.out.println(e.getMessage());
}
return custList;
}
}
我的实体bean是
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package boudy.entity;
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.Size;
import javax.xml.bind.annotation.XmlRootElement;
/**
*
* @author magas
*/
@Entity
@Table(name = "request")
@XmlRootElement
@NamedQueries({
@NamedQuery(name = "Request.findAll", query = "SELECT r FROM Request r"),
@NamedQuery(name = "Request.findById", query = "SELECT r FROM Request r WHERE r.id = :id"),
@NamedQuery(name = "Request.findBySalesdate", query = "SELECT r FROM Request r WHERE r.salesdate = :salesdate"),
@NamedQuery(name = "Request.findByOrganizationtype", query = "SELECT r FROM Request r WHERE r.organizationtype = :organizationtype"),
@NamedQuery(name = "Request.findByPhone", query = "SELECT r FROM Request r WHERE r.phone = :phone"),
@NamedQuery(name = "Request.findByGovernrate", query = "SELECT r FROM Request r WHERE r.governrate = :governrate"),
@NamedQuery(name = "Request.findByArea", query = "SELECT r FROM Request r WHERE r.area = :area"),
@NamedQuery(name = "Request.findByAddress", query = "SELECT r FROM Request r WHERE r.address = :address"),
@NamedQuery(name = "Request.findByPackagetype", query = "SELECT r FROM Request r WHERE r.packagetype = :packagetype"),
@NamedQuery(name = "Request.findByPeriod", query = "SELECT r FROM Request r WHERE r.period = :period"),
@NamedQuery(name = "Request.findBySpeed", query = "SELECT r FROM Request r WHERE r.speed = :speed"),
@NamedQuery(name = "Request.findByCost", query = "SELECT r FROM Request r WHERE r.cost = :cost"),
@NamedQuery(name = "Request.findByDeliveryfee", query = "SELECT r FROM Request r WHERE r.deliveryfee = :deliveryfee"),
@NamedQuery(name = "Request.findByRequestserial", query = "SELECT r FROM Request r WHERE r.requestserial = :requestserial"),
@NamedQuery(name = "Request.findByActive", query = "SELECT r FROM Request r WHERE r.active = :active"),
@NamedQuery(name = "Request.findByCondition", query = "SELECT r FROM Request r WHERE r.condition = :condition"),
@NamedQuery(name = "Request.findByReason", query = "SELECT r FROM Request r WHERE r.reason = :reason"),
@NamedQuery(name = "Request.findByCrddate", query = "SELECT r FROM Request r WHERE r.crddate = :crddate"),
@NamedQuery(name = "Request.findByDeliverydate", query = "SELECT r FROM Request r WHERE r.deliverydate = :deliverydate")})
public class Request implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Basic(optional = false)
@Column(name = "id")
private Integer id;
@Column(name = "salesdate")
@Temporal(TemporalType.DATE)
private Date salesdate;
@Size(max = 45)
@Column(name = "organizationtype")
private String organizationtype;
// @Pattern(regexp="^\\(?(\\d{3})\\)?[- ]?(\\d{3})[- ]?(\\d{4})$", message="Invalid phone/fax format, should be as xxx-xxx-xxxx")//if the field contains phone or fax number consider using this annotation to enforce field validation
@Size(max = 45)
@Column(name = "phone")
private String phone;
@Size(max = 45)
@Column(name = "governrate")
private String governrate;
@Size(max = 45)
@Column(name = "area")
private String area;
@Size(max = 45)
@Column(name = "address")
private String address;
@Size(max = 45)
@Column(name = "packagetype")
private String packagetype;
@Size(max = 45)
@Column(name = "period")
private String period;
@Size(max = 45)
@Column(name = "speed")
private String speed;
// @Max(value=?) @Min(value=?)//if you know range of your decimal fields consider using these annotations to enforce field validation
@Column(name = "cost")
private Double cost;
@Column(name = "deliveryfee")
private Double deliveryfee;
@Size(max = 45)
@Column(name = "requestserial")
private String requestserial;
@Column(name = "active")
private Integer active;
@Size(max = 45)
@Column(name = "condition")
private String condition;
@Size(max = 100)
@Column(name = "reason")
private String reason;
@Column(name = "crddate")
@Temporal(TemporalType.DATE)
private Date crddate;
@Column(name = "deliverydate")
@Temporal(TemporalType.DATE)
private Date deliverydate;
@JoinColumn(name = "custid", referencedColumnName = "id")
@ManyToOne
private Customer custid;
@JoinColumn(name = "salesid", referencedColumnName = "emp_id")
@ManyToOne
private Employee salesid;
@JoinColumn(name = "crdid", referencedColumnName = "emp_id")
@ManyToOne
private Employee crdid;
public Request() {
}
public Request(Integer id) {
this.id = id;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Date getSalesdate() {
return salesdate;
}
public void setSalesdate(Date salesdate) {
this.salesdate = salesdate;
}
public String getOrganizationtype() {
return organizationtype;
}
public void setOrganizationtype(String organizationtype) {
this.organizationtype = organizationtype;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getGovernrate() {
return governrate;
}
public void setGovernrate(String governrate) {
this.governrate = governrate;
}
public String getArea() {
return area;
}
public void setArea(String area) {
this.area = area;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getPackagetype() {
return packagetype;
}
public void setPackagetype(String packagetype) {
this.packagetype = packagetype;
}
public String getPeriod() {
return period;
}
public void setPeriod(String period) {
this.period = period;
}
public String getSpeed() {
return speed;
}
public void setSpeed(String speed) {
this.speed = speed;
}
public Double getCost() {
return cost;
}
public void setCost(Double cost) {
this.cost = cost;
}
public Double getDeliveryfee() {
return deliveryfee;
}
public void setDeliveryfee(Double deliveryfee) {
this.deliveryfee = deliveryfee;
}
public String getRequestserial() {
return requestserial;
}
public void setRequestserial(String requestserial) {
this.requestserial = requestserial;
}
public Integer getActive() {
return active;
}
public void setActive(Integer active) {
this.active = active;
}
public String getCondition() {
return condition;
}
public void setCondition(String condition) {
this.condition = condition;
}
public String getReason() {
return reason;
}
public void setReason(String reason) {
this.reason = reason;
}
public Date getCrddate() {
return crddate;
}
public void setCrddate(Date crddate) {
this.crddate = crddate;
}
public Date getDeliverydate() {
return deliverydate;
}
public void setDeliverydate(Date deliverydate) {
this.deliverydate = deliverydate;
}
public Customer getCustid() {
return custid;
}
public void setCustid(Customer custid) {
this.custid = custid;
}
public Employee getSalesid() {
return salesid;
}
public void setSalesid(Employee salesid) {
this.salesid = salesid;
}
public Employee getCrdid() {
return crdid;
}
public void setCrdid(Employee crdid) {
this.crdid = crdid;
}
@Override
public int hashCode() {
int hash = 0;
hash += (id != null ? id.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 Request)) {
return false;
}
Request other = (Request) object;
if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) {
return false;
}
return true;
}
@Override
public String toString() {
return "boudy.entity.Request[ id=" + id + " ]";
}
}
我得到了这个例外
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'condition, cost, crddate, deliverydate, deliveryfee, governrate, organizationtyp' at line 1
Error Code: 1064
Call: INSERT INTO request (active, address, area, condition, cost, crddate, deliverydate, deliveryfee, governrate, organizationtype, packagetype, period, phone, reason, requestserial, salesdate, speed, crdid, custid, salesid) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
bind => [20 parameters bound]
Query: InsertObjectQuery(boudy.entity.Request[ id=1 ])
at org.eclipse.persistence.exceptions.DatabaseException.sqlException(DatabaseException.java:324)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeDirectNoSelect(DatabaseAccessor.java:840)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeNoSelect(DatabaseAccessor.java:906)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.basicExecuteCall(DatabaseAccessor.java:592)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeCall(DatabaseAccessor.java:535)
at org.eclipse.persistence.internal.sessions.AbstractSession.basicExecuteCall(AbstractSession.java:1717)
at org.eclipse.persistence.sessions.server.ClientSession.executeCall(ClientSession.java:253)
at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:207)
at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.executeCall(DatasourceCallQueryMechanism.java:193)
at org.eclipse.persistence.internal.queries.DatasourceCallQueryMechanism.insertObject(DatasourceCallQueryMechanism.java:342)
at org.eclipse.persistence.internal.queries.StatementQueryMechanism.insertObject(StatementQueryMechanism.java:162)
at org.eclipse.persistence.internal.queries.StatementQueryMechanism.insertObject(StatementQueryMechanism.java:177)
at org.eclipse.persistence.internal.queries.DatabaseQueryMechanism.insertObjectForWrite(DatabaseQueryMechanism.java:472)
at org.eclipse.persistence.queries.InsertObjectQuery.executeCommit(InsertObjectQuery.java:80)
at org.eclipse.persistence.queries.InsertObjectQuery.executeCommitWithChangeSet(InsertObjectQuery.java:90)
at org.eclipse.persistence.internal.queries.DatabaseQueryMechanism.executeWriteWithChangeSet(DatabaseQueryMechanism.java:287)
at org.eclipse.persistence.queries.WriteObjectQuery.executeDatabaseQuery(WriteObjectQuery.java:58)
at org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:844)
at org.eclipse.persistence.queries.DatabaseQuery.executeInUnitOfWork(DatabaseQuery.java:743)
at org.eclipse.persistence.queries.ObjectLevelModifyQuery.executeInUnitOfWorkObjectLevelModifyQuery(ObjectLevelModifyQuery.java:108)
at org.eclipse.persistence.queries.ObjectLevelModifyQuery.executeInUnitOfWork(ObjectLevelModifyQuery.java:85)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2871)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1516)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1498)
at org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1449)
at org.eclipse.persistence.internal.sessions.CommitManager.commitNewObjectsForClassWithChangeSet(CommitManager.java:224)
at org.eclipse.persistence.internal.sessions.CommitManager.commitAllObjectsWithChangeSet(CommitManager.java:123)
at org.eclipse.persistence.internal.sessions.AbstractSession.writeAllObjectsWithChangeSet(AbstractSession.java:3799)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitToDatabase(UnitOfWorkImpl.java:1415)
at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.commitToDatabase(RepeatableWriteUnitOfWork.java:636)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.commitToDatabaseWithChangeSet(UnitOfWorkImpl.java:1505)
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.issueSQLbeforeCompletion(UnitOfWorkImpl.java:3143)
at org.eclipse.persistence.internal.sessions.RepeatableWriteUnitOfWork.issueSQLbeforeCompletion(RepeatableWriteUnitOfWork.java:346)
at org.eclipse.persistence.transaction.AbstractSynchronizationListener.beforeCompletion(AbstractSynchronizationListener.java:157)
at org.eclipse.persistence.transaction.JTASynchronizationListener.beforeCompletion(JTASynchronizationListener.java:68)
at com.sun.enterprise.transaction.JavaEETransactionImpl.commit(JavaEETransactionImpl.java:435)
at com.sun.enterprise.transaction.JavaEETransactionManagerSimplified.commit(JavaEETransactionManagerSimplified.java:855)
at com.sun.enterprise.transaction.UserTransactionImpl.commit(UserTransactionImpl.java:208)
at boudy.sessionbeans.RequestBean.addNewRequest(RequestBean.java:51)
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 org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1052)
at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1124)
at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:5388)
at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:619)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:571)
at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doAround(SystemInterceptorProxy.java:162)
at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:144)
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.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:861)
at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:800)
at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:370)
at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:5360)
at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:5348)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke(EJBLocalObjectInvocationHandler.java:214)
at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke(EJBLocalObjectInvocationHandlerDelegate.java:89)
at com.sun.proxy.$Proxy193.addNewRequest(Unknown Source)
at boudy.beans.SalesRequestBean.submitAddRequestAction(SalesRequestBean.java:92)
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 javax.el.BeanELResolver.invokeMethod(BeanELResolver.java:779)
at javax.el.BeanELResolver.invoke(BeanELResolver.java:528)
at javax.el.CompositeELResolver.invoke(CompositeELResolver.java:257)
at com.sun.el.parser.AstValue.invoke(AstValue.java:248)
at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:302)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
at javax.faces.component.UICommand.broadcast(UICommand.java:315)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1550)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
at boudy.filters.LoginFilter.doFilter(LoginFilter.java:114)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:744)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'condition, cost, crddate, deliverydate, deliveryfee, governrate, organizationtyp' at line 1
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.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at com.mysql.jdbc.Util.getInstance(Util.java:386)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1052)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3609)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3541)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2002)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2163)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2624)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2127)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2427)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2345)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:2330)
at org.eclipse.persistence.internal.databaseaccess.DatabaseAccessor.executeDirectNoSelect(DatabaseAccessor.java:831)
... 110 more
WARNING: Local Exception Stack:
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DatabaseException
答案 0 :(得分：2)
尝试替换
@Column(name = "condition")
与
@Column(name = "`condition`")
或者，如果这不起作用，
@Column(name = "\"condition\"")
MySQL因为CONDITION is a reserved word而抱怨，如果您希望将其用于列名，则必须引用它。将列名括在反引号或双引号中会告诉JPA在将查询传递给数据库时转义列名。
This answer详细介绍了是否使用反引号或双引号。
答案 1 :(得分：0)
我可以再次确认，如果在MySQL中使用恰好是保留字的列名，那么就会得到上面的异常（＆＃34; javax.ejb.EJBException ... JPA eclipse链接异常：com.mysql .jdbc.exceptions.jdbc4.MySQLSyntaxErrorException＆＃34）。我花了半天时间试图解决这个问题，因为我正在使用＆＃39; PRIMARY＆＃39; （类型为Boolean的列;只是提及它，但它与/不会影响此异常）作为列标题;这也是MySQL中的保留字。错误消息相当长，只有在仔细考虑了什么＆＃34;语法错误＆＃34;可能意味着我得到了它。