我有这个项目,我必须包含另一个具有@OneToMany依赖项的实体,类名是empresa(企业),但是当代码运行时我得到了这个异常。
br.com.caelum.vraptor.InterceptionException:org.hibernate.AnnotationException:mappedBy引用一个未知的目标实体属性:com.assist.model.entity.Empresa.colaboradores中的com.assist.model.entity.Colaborador.Empresa br.com.caelum.vraptor.interceptor.StepInvoker.invokeMethod(StepInvoker.java:69) br.com.caelum.vraptor.interceptor.StepInvoker.tryToInvoke(StepInvoker.java:55) br.com.caelum.vraptor.interceptor.StepInvoker $ Proxy $ _ $$ WeldClientProxy.tryToInvoke(Unknown Source) br.com.caelum.vraptor.interceptor.InterceptorExecutor.executeAround(InterceptorExecutor.java:75) br.com.caelum.vraptor.interceptor.InterceptorExecutor $ Proxy $ $$ WeldClientProxy.executeAround(Unknown Source) br.com.caelum.vraptor.interceptor.AspectStyleInterceptorHandler.execute(AspectStyleInterceptorHandler.java:85) br.com.caelum.vraptor.core.DefaultInterceptorStack.next(DefaultInterceptorStack.java:83) br.com.caelum.vraptor.core.DefaultInterceptorStack.start(DefaultInterceptorStack.java:93) br.com.caelum.vraptor.core.DefaultInterceptorStack $ Proxy $ $$ _ WeldClientProxy.start(Unknown Source) br.com.caelum.vraptor.observer.RequestHandlerObserver.handle(RequestHandlerObserver.java:93) sun.reflect.NativeMethodAccessorImpl.invoke0(原生方法) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:497) org.jboss.weld.injection.MethodInjectionPoint.invokeOnInstanceWithSpecialValue(MethodInjectionPoint.java:93) org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:266) org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:253) org.jboss.weld.event.ObserverMethodImpl.notify(ObserverMethodImpl.java:232) org.jboss.weld.event.ObserverNotifier.notifyObserver(ObserverNotifier.java:169) org.jboss.weld.event.ObserverNotifier.notifyObserver(ObserverNotifier.java:165) org.jboss.weld.event.ObserverNotifier.notifyObservers(ObserverNotifier.java:119) org.jboss.weld.event.ObserverNotifier.fireEvent(ObserverNotifier.java:112) org.jboss.weld.event.EventImpl.fire(EventImpl.java:83) br.com.caelum.vraptor.VRaptor.doFilter(VRaptor.java:123)
我不知道如何修复,导致这种情况的原因,我在java和hibernate中都很新,这是我的课程。
实体Colaborador =
@SkipSerialization @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "Id_Empresa", nullable = false, foreignKey = @ForeignKey(name = "FK_COLABORADOR_EMPRESA")) public Empresa empresa;
实体Empresa
@OneToMany(mappedBy =" empresa",targetEntity = Colaborador.class,cascade = CascadeType.ALL,orphanRemoval = true) 私人套装colaboradores;
一个empresa可能有很多colaboradores。
答案 0 :(得分:1)
首先,创建类并将映射类放在hibernate配置中。例如:
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.url">${conn-string}</property>
<property name="hibernate.connection.username">${db-user}</property>
<property name="hibernate.connection.password">${db-pass}</property>
<property name="hibernate.dialect">com.ftu.utils.FtuCustomOracleDialect</property>
<property name="hibernate.connection.driver_class">oracle.jdbc.OracleDriver</property>
<property name="hibernate.current_session_context_class">thread</property>
<property name="connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
<property name="hibernate.c3p0.min_size">1</property>
<property name="hibernate.c3p0.max_size">50</property>
<property name="hibernate.c3p0.timeout">30000</property>
<property name="hibernate.c3p0.checkoutTimeout">30000</property>
<property name="hibernate.c3p0.max_statements">1</property>
<property name="hibernate.c3p0.idle_test_period">100</property>
<property name="show_sql">false</property>
<property name="format_sql">true</property>
<mapping class="com.assist.model.entity.Empresa " />
</session-factory>
</hibernate-configuration>
然后你做关系@oneToMany。