Question

我在数据库中有两个表一对一关系：

CREATE  TABLE IF NOT EXISTS `toproject`.`osoby` (
  `id` INT NOT NULL AUTO_INCREMENT ,
  `imie` VARCHAR(45) NOT NULL ,
  `nazwisko` VARCHAR(45) NOT NULL ,
  `pesel` VARCHAR(11) NOT NULL ,
  `telefon` VARCHAR(45) NULL ,
  `pensja` VARCHAR(45) NULL ,
  `typ` VARCHAR(45) NOT NULL ,
  `stanowisko_id` INT NULL ,
  PRIMARY KEY (`id`) ,
  UNIQUE INDEX `pesel_UNIQUE` (`pesel` ASC) ,
  INDEX `fk_osoby_stanowiska_idx` (`stanowisko_id` ASC) ,
  CONSTRAINT `fk_osoby_stanowiska`
    FOREIGN KEY (`stanowisko_id` )
    REFERENCES `toproject`.`stanowiska` (`id` )
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;

CREATE  TABLE IF NOT EXISTS `toproject`.`adresy` (
  `id` INT NOT NULL AUTO_INCREMENT,
  `ulica` VARCHAR(45) NOT NULL ,
  `miejscowosc` VARCHAR(45) NOT NULL ,
  INDEX `fk_adres_osoby1_idx` (`id` ASC) ,
  PRIMARY KEY (`id`) ,
  CONSTRAINT `fk_adres_osoby1`
    FOREIGN KEY (`id` )
    REFERENCES `toproject`.`osoby` (`id` )
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)
ENGINE = InnoDB;

我必须使用这个@Inheritance(strategy = InheritanceType.SINGLE_TABLE)我写的那个Java实体类：

班主任：

@Entity
@Table(name = "osoby")
@Inheritance(strategy = InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(name="typ", discriminatorType=DiscriminatorType.STRING)
public class Osoba implements Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Basic(optional = false)
    @Column(name = "id")
    private Integer id;
    @Basic(optional = false)
    @NotNull
    @Size(min = 1, max = 45)
    @Column(name = "imie")
    private String imie;
    @Basic(optional = false)
    @NotNull
    @Size(min = 1, max = 45)
    @Column(name = "nazwisko")
    private String nazwisko;
    @Basic(optional = false)
    @NotNull
    @Size(min = 1, max = 11)
    @Column(name = "pesel")
    private String pesel;

客户端类：

@Entity
@DiscriminatorValue(value = "Klient")
public class Klient extends Osoba {

    @Size(max = 45)
    @Column(name = "telefon")
    private String telefon;
    @OneToMany(cascade = CascadeType.ALL, mappedBy = "osobyId")
    private Collection<Zamowienie> zamowienieCollection;
    @OneToOne(cascade = CascadeType.ALL, mappedBy = "klient")
    private Adres adres;

地址实体：

@Entity
@Table(name = "adresy")
public class Adres implements Serializable {

    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Basic(optional = false)
    @Column(name = "id")
    private Integer id;
    @Basic(optional = false)
    @NotNull
    @Size(min = 1, max = 45)
    @Column(name = "ulica")
    private String ulica;
    @Basic(optional = false)
    @NotNull
    @Size(min = 1, max = 45)
    @Column(name = "miejscowosc")
    private String miejscowosc;
    @JoinColumn(name = "id", referencedColumnName = "id", insertable = false, updatable = false)
    @OneToOne(optional = false)
    private Klient klient;

我有一个klientMB，可以添加个人和地址

@ManagedBean
@RequestScoped
public class KlientMB {

    @EJB
    private KlientDaoLocal klientDao;
    private Klient klient;

    public KlientMB() {
    }

    public Klient getKlient() {
        if (klient == null) {
            klient = new Klient();
            Adres adres = new Adres();
            klient.setAdres(adres);
            adres.setOsoba(klient);
        }
        return klient;
    }

    public void setKlient(Klient klient) {
        this.klient = klient;
    }

    public String createKlient() {
        klientDao.create(klient);
        return "klienci.xhtml?faces-redirect=true";

    }

但是当我尝试添加Klient时出现此错误：

javax.faces.el.EvaluationException：javax.ejb.EJBException at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke（MethodBindingMethodExpressionAdapter.java:102） at com.sun.faces.application.ActionListenerImpl.processAction（ActionListenerImpl.java:102）在javax.faces.component.UICommand.broadcast（UICommand.java:315）在javax.faces.component.UIViewRoot.broadcastEvents（UIViewRoot.java:794）在javax.faces.component.UIViewRoot.processApplication（UIViewRoot.java:1259） at com.sun.faces.lifecycle.InvokeApplicationPhase.execute（InvokeApplicationPhase.java:81）在com.sun.faces.lifecycle.Phase.doPhase（Phase.java:101）在com.sun.faces.lifecycle.LifecycleImpl.execute（LifecycleImpl.java:118）在javax.faces.webapp.FacesServlet.service（FacesServlet.java:593）在org.apache.catalina.core.StandardWrapper.service（StandardWrapper.java:1550）在org.apache.catalina.core.StandardWrapperValve.invoke（StandardWrapperValve.java:281）在org.apache.catalina.core.StandardContextValve.invoke（StandardContextValve.java:175）在org.apache.catalina.core.StandardPipeline.doInvoke（StandardPipeline.java:655）在org.apache.catalina.core.StandardPipeline.invoke（StandardPipeline.java:595）在org.apache.catalina.core.StandardHostValve.invoke（StandardHostValve.java:161）在org.apache.catalina.connector.CoyoteAdapter.doService（CoyoteAdapter.java:331）在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）在com.sun.grizzly.http.ProcessorTask.invokeAdapter（ProcessorTask.java:860） at com.sun.grizzly.http.ProcessorTask.doProcess（ProcessorTask.java:757）在com.sun.grizzly.http.ProcessorTask.process（ProcessorTask.java:1056）在com.sun.grizzly.http.DefaultProtocolFilter.execute（DefaultProtocolFilter.java:229） at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter（DefaultProtocolChain.java:137）在com.sun.grizzly.DefaultProtocolChain.execute（DefaultProtocolChain.java:104）在com.sun.grizzly.DefaultProtocolChain.execute（DefaultProtocolChain.java:90）在com.sun.grizzly.http.HttpProtocolChain.execute（HttpProtocolChain.java:79） at com.sun.grizzly.ProtocolChainContextTask.doCall（ProtocolChainContextTask.java:54）在com.sun.grizzly.SelectionKeyContextTask.call（SelectionKeyContextTask.java:59）在com.sun.grizzly.ContextTask.run（ContextTask.java:71） at com.sun.grizzly.util.AbstractThreadPool $ Worker.doWork（AbstractThreadPool.java:532）在com.sun.grizzly.util.AbstractThreadPool $ Worker.run（AbstractThreadPool.java:513）在java.lang.Thread.run（Thread.java:744）引起：javax.ejb.EJBException at com.sun.ejb.containers.BaseContainer.processSystemException（BaseContainer.java:5215） at com.sun.ejb.containers.BaseContainer.completeNewTx（BaseContainer.java:5113） at com.sun.ejb.containers.BaseContainer.postInvokeTx（BaseContainer.java:4901）在com.sun.ejb.containers.BaseContainer.postInvoke（BaseContainer.java:2045） at com.sun.ejb.containers.BaseContainer.postInvoke（BaseContainer.java:1994） at com.sun.ejb.containers.EJBLocalObjectInvocationHandler.invoke（EJBLocalObjectInvocationHandler.java:222） at com.sun.ejb.containers.EJBLocalObjectInvocationHandlerDelegate.invoke（EJBLocalObjectInvocationHandlerDelegate.java:89）在com.sun.proxy。$ Proxy177.create（未知来源） at pl.ear.mb.KlientMB.createKlient（KlientMB.java:45） 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）在javax.el.BeanELResolver.invokeMethod（BeanELResolver.java:779）在javax.el.BeanELResolver.invoke（BeanELResolver.java:528）在javax.el.CompositeELResolver.invoke（CompositeELResolver.java:257）在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） ......还有32个引起：javax.persistence.EntityExistsException：org.hibernate.exception.ConstraintViolationException：无法插入：[pl.ear.model.Adres] at org.hibernate.ejb.AbstractEntityManagerImpl.throwPersistenceException（AbstractEntityManagerImpl.java:612）在org.hibernate.ejb.AbstractEntityManagerImpl.persist（AbstractEntityManagerImpl.java:226） at com.sun.enterprise.container.common.impl.EntityManagerWrapper.persist（EntityManagerWrapper.java:269）在pl.ear.dao.KlientDao.create（KlientDao.java:26） 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）在org.glassfish.ejb.security.application.EJBSecurityManager.runMethod（EJBSecurityManager.java:1052）在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）在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） ......还有46个引起：org.hibernate.exception.ConstraintViolationException：无法插入：[pl.ear.model.Adres] 在org.hibernate.exception.SQLStateConverter.convert（SQLStateConverter.java:71）在org.hibernate.exception.JDBCExceptionHelper.convert（JDBCExceptionHelper.java:43）在org.hibernate.id.insert.AbstractReturningDelegate.performInsert（AbstractReturningDelegate.java:40）在org.hibernate.persister.entity.AbstractEntityPersister.insert（AbstractEntityPersister.java:2158）在org.hibernate.persister.entity.AbstractEntityPersister.insert（AbstractEntityPersister.java:2638）在org.hibernate.action.EntityIdentityInsertAction.execute（EntityIdentityInsertAction.java:48）在org.hibernate.engine.ActionQueue.execute（ActionQueue.java:250） at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate（AbstractSaveEventListener.java:298）在org.hibernate.event.def.AbstractSaveEventListener.performSave（AbstractSaveEventListener.java:181） at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId（AbstractSaveEventListener.java:107） at org.hibernate.ejb.event.EJB3PersistEventListener.saveWithGeneratedId（EJB3PersistEventListener.java:49）在org.hibernate.event.def.DefaultPersistEventListener.entityIsTransient（DefaultPersistEventListener.java:131）在org.hibernate.event.def.DefaultPersistEventListener.onPersist（DefaultPersistEventListener.java:87）在org.hibernate.impl.SessionImpl.firePersist（SessionImpl.java:609）在org.hibernate.impl.SessionImpl.persist（SessionImpl.java:601）在org.hibernate.engine.EJB3CascadingAction $ 1.cascade（EJB3CascadingAction.java:30）在org.hibernate.engine.Cascade.cascadeToOne（Cascade.java:268）在org.hibernate.engine.Cascade.cascadeAssociation（Cascade.java:216）在org.hibernate.engine.Cascade.cascadeProperty（Cascade.java:169）在org.hibernate.engine.Cascade.cascade（Cascade.java:130）在org.hibernate.event.def.AbstractSaveEventListener.cascadeAfterSave（AbstractSaveEventListener.java:456） at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate（AbstractSaveEventListener.java:334）在org.hibernate.event.def.AbstractSaveEventListener.performSave（AbstractSaveEventListener.java:181） at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId（AbstractSaveEventListener.java:107） at org.hibernate.ejb.event.EJB3PersistEventListener.saveWithGeneratedId（EJB3PersistEventListener.java:49）在org.hibernate.event.def.DefaultPersistEventListener.entityIsTransient（DefaultPersistEventListener.java:131）在org.hibernate.event.def.DefaultPersistEventListener.onPersist（DefaultPersistEventListener.java:87）在org.hibernate.event.def.DefaultPersistEventListener.onPersist（DefaultPersistEventListener.java:38）在org.hibernate.impl.SessionImpl.firePersist（SessionImpl.java:618）在org.hibernate.impl.SessionImpl.persist（SessionImpl.java:592）在org.hibernate.impl.SessionImpl.persist（SessionImpl.java:596）在org.hibernate.ejb.AbstractEntityManagerImpl.persist（AbstractEntityManagerImpl.java:220） ......还有70多个引发者：com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException：无法添加或更新子行：外键约束失败（toproject。adresy，CONSTRAINT FKAB3C9E7C7D93F9AD FOREIGN KEY（ id）参考osoby（id）） 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）在com.mysql.jdbc.Util.handleNewInstance（Util.java:411）在com.mysql.jdbc.Util.getInstance（Util.java:386）在com.mysql.jdbc.SQLError.createSQLException（SQLError.java:1041）在com.mysql.jdbc.MysqlIO.checkErrorPacket（MysqlIO.java:4187）在com.mysql.jdbc.MysqlIO.checkErrorPacket（MysqlIO.java:4119）在com.mysql.jdbc.MysqlIO.sendCommand（MysqlIO.java:2570）在com.mysql.jdbc.MysqlIO.sqlQueryDirect（MysqlIO.java:2731）在com.mysql.jdbc.ConnectionImpl.execSQL（ConnectionImpl.java:2815）在com.mysql.jdbc.PreparedStatement.executeInternal（PreparedStatement.java:2155）在com.mysql.jdbc.PreparedStatement.executeUpdate（PreparedStatement.java:2458）在com.mysql.jdbc.PreparedStatement.executeUpdate（PreparedStatement.java:2375）在com.mysql.jdbc.PreparedStatement.executeUpdate（PreparedStatement.java:2359）在org.hibernate.id.IdentityGenerator $ GetGeneratedKeysDelegate.executeAndExtract（IdentityGenerator.java:73）在org.hibernate.id.insert.AbstractReturningDelegate.performInsert（AbstractReturningDelegate.java:33） ... 99更多

Answer 1

我认为问题在于您使用id表中的toproject.adresy（主键）列作为连接toproject.osoby的外键。您应该引入一个新列（例如osoby_id）作为连接到toproject.osoby的外键列。目前发生的是，Adres表的id用于查找Osoby表中的记录，并且没有记录。

没有添加JPA一对一关系

1 个答案: