我正在尝试从表中获取数据时解决问题StackOverflowError。在表中Employee是一名员工一切正常。但是，当我要访问Employee Set表格Outpost时，当有多个元素时，我有堆栈溢出。这是我的代码
员工
@Entity
@Table(name = "Employees")
public class EmployeeEntity {
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE)
@Column(name = "employee_id", nullable = false)
private Integer employeeId;
@Column
private String name;
@ManyToMany(cascade = { CascadeType.ALL }, fetch = FetchType.LAZY)
@JoinTable(name = "Employee_Outpost", joinColumns = { @JoinColumn(name = "employee_id") }, inverseJoinColumns = { @JoinColumn(name = "outpost_id") })
private Set<OutpostEntity> outposts = new HashSet<OutpostEntity>();
@OneToMany(mappedBy = "employee", fetch = FetchType.LAZY)
private Set<ShipperEntity> shippers = new HashSet<ShipperEntity>();
前哨
@Entity
@Table(name = "Outpost")
public class OutpostEntity implements Serializable {
/**
*
*/
private static final long serialVersionUID = -7782359215536098452L;
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE)
@Column(name = "outpost_id", nullable = false)
private Integer outpostID;
@Column
private String city;
@OneToMany(mappedBy = "outpost", fetch = FetchType.LAZY)
private Set<ShipperEntity> shippers = new HashSet<ShipperEntity>();
@ManyToMany(mappedBy = "outposts", cascade = CascadeType.MERGE, fetch = FetchType.LAZY)
private Set<EmployeeEntity> employees = new HashSet<EmployeeEntity>();
@OneToMany(mappedBy = "outpost", fetch = FetchType.LAZY)
private Set<AreaEntity> areas = new HashSet<AreaEntity>();
的StackOverflowError
javax.faces.FacesException: #{orderFormBean.submit}: java.lang.StackOverflowError
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:89)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at com.liferay.faces.bridge.BridgePhaseResourceImpl.execute(BridgePhaseResourceImpl.java:103)
at com.liferay.faces.bridge.BridgeImpl.doFacesRequest(BridgeImpl.java:128)
at javax.portlet.faces.GenericFacesPortlet.serveResource(GenericFacesPortlet.java:178)
at com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:122)
at com.liferay.portlet.ScriptDataPortletFilter.doFilter(ScriptDataPortletFilter.java:82)
at com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:116)
at com.liferay.portal.kernel.portlet.PortletFilterUtil.doFilter(PortletFilterUtil.java:71)
at com.liferay.portal.kernel.servlet.PortletServlet.service(PortletServlet.java:112)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:412)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339)
at com.liferay.portlet.InvokerPortletImpl.invoke(InvokerPortletImpl.java:601)
at com.liferay.portlet.InvokerPortletImpl.invokeResource(InvokerPortletImpl.java:696)
at com.liferay.portlet.InvokerPortletImpl.serveResource(InvokerPortletImpl.java:462)
at com.liferay.portlet.PortletContainerImpl._doServeResource(PortletContainerImpl.java:792)
at com.liferay.portlet.PortletContainerImpl.serveResource(PortletContainerImpl.java:152)
at com.liferay.portlet.SecurityPortletContainerWrapper.serveResource(SecurityPortletContainerWrapper.java:166)
at com.liferay.portlet.RestrictPortletContainerWrapper.serveResource(RestrictPortletContainerWrapper.java:166)
at com.liferay.portal.kernel.portlet.PortletContainerUtil.serveResource(PortletContainerUtil.java:164)
at com.liferay.portal.action.LayoutAction.processLayout(LayoutAction.java:364)
at com.liferay.portal.action.LayoutAction.doExecute(LayoutAction.java:178)
at com.liferay.portal.action.LayoutAction.execute(LayoutAction.java:79)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
at com.liferay.portal.struts.PortalRequestProcessor.process(PortalRequestProcessor.java:173)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at com.liferay.portal.servlet.MainServlet.callParentService(MainServlet.java:546)
at com.liferay.portal.servlet.MainServlet.service(MainServlet.java:523)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at com.liferay.portal.servlet.filters.secure.SecureFilter.processFilter(SecureFilter.java:293)
at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at com.liferay.portal.servlet.filters.jsoncontenttype.JSONContentTypeFilter.processFilter(JSONContentTypeFilter.java:42)
at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:412)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339)
at com.liferay.portal.servlet.FriendlyURLServlet.service(FriendlyURLServlet.java:160)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at com.liferay.portal.servlet.filters.gzip.GZipFilter.processFilter(GZipFilter.java:123)
at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at com.liferay.portal.servlet.filters.secure.SecureFilter.processFilter(SecureFilter.java:293)
at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at com.liferay.portal.servlet.filters.i18n.I18nFilter.processFilter(I18nFilter.java:243)
at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at com.liferay.portal.servlet.filters.jsoncontenttype.JSONContentTypeFilter.processFilter(JSONContentTypeFilter.java:42)
at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at com.liferay.portal.servlet.filters.autologin.AutoLoginFilter.processFilter(AutoLoginFilter.java:263)
at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at com.liferay.portal.servlet.filters.sso.ntlm.NtlmPostFilter.processFilter(NtlmPostFilter.java:83)
at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at com.liferay.portal.sharepoint.SharepointFilter.processFilter(SharepointFilter.java:88)
at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at com.liferay.portal.kernel.servlet.BaseFilter.processFilter(BaseFilter.java:169)
at com.liferay.portal.servlet.filters.virtualhost.VirtualHostFilter.processFilter(VirtualHostFilter.java:226)
at com.liferay.portal.kernel.servlet.BaseFilter.doFilter(BaseFilter.java:59)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:185)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:109)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:165)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:165)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:185)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
Caused by: javax.faces.FacesException: #{orderFormBean.submit}: java.lang.StackOverflowError
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:117)
at javax.faces.component.UICommand.broadcast(UICommand.java:315)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:786)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1251)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
... 134 more
Caused by: javax.faces.el.EvaluationException: java.lang.StackOverflowError
at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:101)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:101)
... 138 more
Caused by: java.lang.StackOverflowError
at java.util.HashMap.values(HashMap.java:1036)
at org.hibernate.engine.spi.LoadQueryInfluencers.getEnabledFilters(LoadQueryInfluencers.java:105)
at org.hibernate.engine.spi.QueryParameters.processFilters(QueryParameters.java:462)
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1827)
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1816)
at org.hibernate.loader.Loader.doQuery(Loader.java:900)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:342)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:312)
at org.hibernate.loader.Loader.loadCollection(Loader.java:2238)
at org.hibernate.loader.collection.CollectionLoader.initialize(CollectionLoader.java:65)
at org.hibernate.persister.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:674)
at org.hibernate.event.internal.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:85)
at org.hibernate.internal.SessionImpl.initializeCollection(SessionImpl.java:1849)
at org.hibernate.collection.internal.AbstractPersistentCollection$4.doWork(AbstractPersistentCollection.java:549)
at org.hibernate.collection.internal.AbstractPersistentCollection.withTemporarySessionIfNeeded(AbstractPersistentCollection.java:234)
at org.hibernate.collection.internal.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:545)
at org.hibernate.collection.internal.AbstractPersistentCollection.read(AbstractPersistentCollection.java:124)
at org.hibernate.collection.internal.PersistentSet.hashCode(PersistentSet.java:428)
at pl.imsi.domain.OutpostEntity.hashCode(OutpostEntity.java:184)
at pl.imsi.domain.AreaEntity.hashCode(AreaEntity.java:85)
at java.util.HashMap.hash(HashMap.java:366)
at java.util.HashMap.put(HashMap.java:496)
at java.util.HashSet.add(HashSet.java:217)
hashCode（）＆amp; equals（）方法
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((email == null) ? 0 : email.hashCode());
result = prime * result
+ ((employeeId == null) ? 0 : employeeId.hashCode());
result = prime * result
+ ((liferayUserId == null) ? 0 : liferayUserId.hashCode());
result = prime * result + ((name == null) ? 0 : name.hashCode());
result = prime * result
+ ((outposts == null) ? 0 : outposts.hashCode());
result = prime * result + ((phone == null) ? 0 : phone.hashCode());
result = prime * result
+ ((shippers == null) ? 0 : shippers.hashCode());
result = prime * result
+ ((sureName == null) ? 0 : sureName.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
EmployeeEntity other = (EmployeeEntity) obj;
if (email == null) {
if (other.email != null)
return false;
} else if (!email.equals(other.email))
return false;
if (employeeId == null) {
if (other.employeeId != null)
return false;
} else if (!employeeId.equals(other.employeeId))
return false;
if (liferayUserId == null) {
if (other.liferayUserId != null)
return false;
} else if (!liferayUserId.equals(other.liferayUserId))
return false;
if (name == null) {
if (other.name != null)
return false;
} else if (!name.equals(other.name))
return false;
if (outposts == null) {
if (other.outposts != null)
return false;
} else if (!outposts.equals(other.outposts))
return false;
if (phone == null) {
if (other.phone != null)
return false;
} else if (!phone.equals(other.phone))
return false;
if (shippers == null) {
if (other.shippers != null)
return false;
} else if (!shippers.equals(other.shippers))
return false;
if (sureName == null) {
if (other.sureName != null)
return false;
} else if (!sureName.equals(other.sureName))
return false;
return true;
}