使用休眠获取数据时无限循环

使用休眠获取数据时无限循环

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使用休眠获取数据时无限循环

本文介绍了使用休眠获取数据时无限循环的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 29岁程序员，3月因学历无情被辞！ 我使用 HQl 获取数据，但是在查询时发生一个奇怪的异常，请查看一次这个数据。 位于org.hibernate.loader.plan.exec.internal。 AbstractLoadPlanBasedLoader.executeLoad（AbstractLoadPlanBasedLoader.java:122）在org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad（AbstractLoadPlanBasedLoader.java:86）上 $ or $ $ $ $在org.hibernate.loader.entity。 plan.AbstractLoadPlanBasedEntityLoader.load（AbstractLoadPlanBasedEntityLoader.java:167） org.hibernate.persister.entity.AbstractEntityPersister.load（AbstractEntityPersister.java:4107）在org.hibernate.event.internal.DefaultLoadEventListener。 loadFromDatasource（DefaultLoadEventListener.java:508） at org.hibernate.event.internal.DefaultLoadEventListener.doLoad（DefaultLoadEventListener.java:478）在org.hibernate.event.internal.DefaultLoadEventListener.load（DefaultLoadEventListener.java:219）在org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad（DefaultLoadEventListener.java:278）在org.hibernate作为.event.internal.DefaultLoadEventListener.doOnLoad（DefaultLoadEventListener.java:121）在org.hibernate.event.internal.DefaultLoadEventListener.onLoad（DefaultLoadEventListener.java:89）在org.hibernate.internal.SessionImpl .fireLoad（SessionImpl.java:1239）在org.hibernate.internal.SessionImpl.internalLoad（SessionImpl.java:1122）在org.hibernate.type.EntityType.resolveIdentifier（EntityType.java:680 ）在org.hibernate.type.EntityType.resolve（EntityType.java:462）在org.hibernate.type.EntityType.resolve（EntityType.java:455） at org。 hibernate.type.ComponentType.resolve（ComponentType.java:688） at org.hibernate.loader.plan.exec.process.internal.EntityReferenceInitializerImpl.resolveEntityKey（En tityReferenceInitializerImpl.java:142）位于org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.resolveEntityKey（AbstractRowReader.java:143）位于org.hibernate.loader.plan.exec。 process.internal.AbstractRowReader.readRow（AbstractRowReader.java:94）在org.hibernate.loader.plan.exec.internal.EntityLoadQueryDetails $ EntityLoaderRowReader.readRow（EntityLoadQueryDetails.java:241）。在组织。 hibernate.loader.plan.exec.process.internal.ResultSetProcessorImpl.extractResults（ResultSetProcessorImpl.java:122） at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad（AbstractLoadPlanBasedLoader.java:122） at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad（AbstractLoadPlanBasedLoader.java:86） at org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load（AbstractLoadPlanBasedEntityLoader.java:167 ）在org.hibernate.persister.entity.AbstractEntityPersister.lo广告（AbstractEntityPersister.java:4107）在org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource（DefaultLoadEventListener.java:508）在org.hibernate.event.internal.DefaultLoadEventListener.doLoad（DefaultLoadEventListener。 org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad（DefaultLoadEventListener.java:278） at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad（DefaultLoadEventListener.java:121） at org.hibernate.event.internal.DefaultLoadEventListener.onLoad（DefaultLoadEventListener.java:89）在org.hibernate.internal.SessionImpl.fireLoad（SessionImpl.java:1239）在org.hibernate.internal.SessionImpl.internalLoad（SessionImpl.java:1122）在org.hibernate.type.EntityType .resolveIdentifier（EntityType.java:680）在org.hibernate.type.EntityType.resolve（Entit at org.hibernate.type.EntityType.resolve（EntityType.java:455） at org.hibernate.type.ComponentType.resolve（ComponentType.java:688） at org.hibernate.loader.plan.exec.process.internal.EntityReferenceInitializerImpl.resolveEntityKey（EntityReferenceInitializerImpl.java:142） at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.resolveEntityKey（ AbstractRowReader.java:143）在org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.readRow（AbstractRowReader.java:94）在org.hibernate.loader.plan.exec。 internal.EntityLoadQueryDetails $ EntityLoaderRowReader.readRow（EntityLoadQueryDetails.java:241）在org.hibernate.loader.plan.exec.process.internal.ResultSetProcessorImpl.extractResults（ResultSetProcessorImpl.java:122）。在组织。 hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad（AbstractLoadPlanBasedLoader.java:122）位于org.hibernate.loader.plan.exec.internal。 AbstractLoadPlanBasedLoader.executeLoad（AbstractLoadPlanBasedLoader.java:86） at org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load（AbstractLoadPlanBasedEntityLoader.java:167） at org.hibernate.persister.entity.AbstractEntityPersister。负载（AbstractEntityPersister.java:4107）。在org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource（DefaultLoadEventListener.java:508）。在org.hibernate.event.internal.DefaultLoadEventListener.doLoad（DefaultLoadEventListener。 org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad（DefaultLoadEventListener.java:278） at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad（DefaultLoadEventListener.java:121） at org.hibernate.event.internal.DefaultLoadEventListener.onLoad（DefaultLoadEventListener.java:89）在org.hibernat e.internal.SessionImpl.fireLoad（SessionImpl.java:1239）位于org.hibernate.internal.SessionImpl.internalLoad（SessionImpl.java:1122）位于org.hibernate.type.EntityType.resolveIdentifier（ EntityType.java:680）在org.hibernate.type.EntityType.resolve（EntityType.java:462）在org.hibernate.type.EntityType.resolve（EntityType.java:455）$ b在org.hibernate.type.ComponentType.resolve（ComponentType.java:688） $ b在org.hibernate.loader.plan.exec.process.internal.EntityReferenceInitializerImpl.resolveEntityKey（EntityReferenceInitializerImpl.java:142）$ b在org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.resolveEntityKey（AbstractRowReader.java:143） $ b在org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.readRow（ AbstractRowReader.java:94）在org.hibernate.loader.plan.exec.internal.EntityLoadQueryDetails $ EntityLoaderRowReader.readRow（EntityLoadQueryDetails.java:241）在org.hibernate.loader.plan.e xec.process.internal.ResultSetProcessorImpl.extractResults（ResultSetProcessorImpl.java:122） at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad（AbstractLoadPlanBasedLoader.java:122） at org。 hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad（AbstractLoadPlanBasedLoader.java:86）在org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load（AbstractLoadPlanBasedEntityLoader.java:167）。在org.hibernate.persister.entity.AbstractEntityPersister.load（AbstractEntityPersister.java:4107）处org.hibernate作为org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource（DefaultLoadEventListener.java:508）。 event.internal.DefaultLoadEventListener.doLoad（DefaultLoadEventListener.java:478）在org.hibernate.event.internal.DefaultLoadEventListener.load（DefaultLoadEventListener.java:219）。在org.hibernate.event.internal。 DefaultLoadEventListener.proxyOrLoad（德faultLoadEventListener.java:278）在org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad（DefaultLoadEventListener.java:121）在org.hibernate.event.internal.DefaultLoadEventListener.onLoad（DefaultLoadEventListener.java： 89）美元，org.hibernate.internal.SessionImpl.fireLoad（SessionImpl.java:1239 b $ b）在org.hibernate.internal.SessionImpl.internalLoad（SessionImpl.java:1122）。在组织.hibernate.type.EntityType.resolveIdentifier（EntityType.java:680）在org.hibernate.type.EntityType.resolve（EntityType.java:462）在org.hibernate.type.EntityType.resolve （EntityType.java:455） org.hibernate.type.ComponentType.resolve（ComponentType.java:688） at org.hibernate.loader.plan.exec.process.internal.EntityReferenceInitializerImpl.resolveEntityKey （EntityReferenceInitializerImpl.java:142） at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.resolveEntityKey（AbstractRowReader.java:143） at org。 hibernate.loader.plan.exec.process.internal.AbstractRowReader.readRow（AbstractRowReader.java:94） at org.hibernate.loader.plan.exec.internal.EntityLoadQueryDetails $ EntityLoaderRowReader.readRow（EntityLoadQueryDetails.java:241 ）在org.hibernate.loader.plan.exec.process.internal.ResultSetProcessorImpl.extractResults （ResultSetProcessorImpl.java:122）在org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad （AbstractLoadPlanBasedLoader.java:122）$ or $ $ b $ org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad（AbstractLoadPlanBasedLoader.java:86） .load（AbstractLoadPlanBasedEntityLoader.java:167）在org.hibernate.persister.entity.AbstractEntityPersister.load（AbstractEntityPersister.java:4107）在org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource（DefaultLoadEventListener .java：508）$ or $ $ b $ org.hibe rnate.event.internal.DefaultLoadEventListener.doLoad（DefaultLoadEventListener.java:478）在org.hibernate.event.internal.DefaultLoadEventListener.load（DefaultLoadEventListener.java:219）在org.hibernate.event。 internal.DefaultLoadEventListener.proxyOrLoad（DefaultLoadEventListener.java:278）处org.hibernate.event.internal.DefaultLoadEventListener org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad（DefaultLoadEventListener.java:121）。 onLoad（DefaultLoadEventListener.java:89） at org.hibernate.internal.SessionImpl.fireLoad（SessionImpl.java:1239） at org.hibernate.internal.SessionImpl.internalLoad（SessionImpl.java:1122）在org.hibernate.type.EntityType.resolveIdentifier（EntityType.java:680） 在org.hibernate.type.EntityType.resolve（EntityType.java:462）在org.hibernate作为.type.EntityType.resolve（EntityType.java:455） at org.hibernate.type.ComponentType.resolve（ComponentType.java:688） at or g.hibernate.loader.plan.exec.process.internal.EntityReferenceInitializerImpl.resolveEntityKey（EntityReferenceInitializerImpl.java:142）在org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.resolveEntityKey（AbstractRowReader.java ：143） at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.readRow（AbstractRowReader.java:94） at org.hibernate.loader.plan.exec.internal.EntityLoadQueryDetails $ EntityLoaderRowReader.readRow（EntityLoadQueryDetails.java:241） at org.hibernate.loader.plan.exec.process.internal.ResultSetProcessorImpl.extractResults（ResultSetProcessorImpl.java:122） at org.hibernate.loader .plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad（AbstractLoadPlanBasedLoader.java:122）$ or $ $ b $ org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad（AbstractLoadPlanBasedLoader.java:86） at org .hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load（AbstractLoadPlanB org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource（DefaultLoadEventListener.java：在org.hibernate.event.internal.DefaultLoadEventListener.doLoad（DefaultLoadEventListener.java:478 508））。在org.hibernate.event.internal.DefaultLoadEventListener.load（DefaultLoadEventListener.java:219）$ b在org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad（DefaultLoadEventListener.java:278） $ b在org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad（DefaultLoadEventListener.java:121）。在组织.hibernate.event.internal.DefaultLoadEventListener.onLoad（DefaultLoadEventListener.java:89） at org.hibernate.internal.SessionImpl.fireLoad（SessionImpl.java:1239） at org.hibernate.internal.SessionImpl .internalLoad（SessionImpl.java:1122）在org.hibernate.type.EntityTyp e.resolveIdentifier（EntityType.java:680）在org.hibernate.type.EntityType.resolve（EntityType.java:462）在org.hibernate.type.EntityType.resolve（EntityType.java： 455） at org.hibernate.type.ComponentType.resolve（ComponentType.java:688） 请看看我的查询 currentSession = sessionFactory.getCurrentSession（）; Query query = currentSession.createQuery（from AssocFeeStudent asf where asf.studentDetails.studentAdmissionId =：studentAdmissionId）; query.setParameter（studentAdmissionId，id）; query.getResultList（）; 请查看我的实体类 @Entity @Table（name =assoc_fee_student，catalog =campus_guru_01）公共类AssocFeeStudent实现java.io.Serializable { 私人FeeCategory feeCategory; private StudentDetails studentDetails; Public AssocFeeStudent（）{} Public AssocFeeStudent（FeeCategory feeCategory，StudentDetails studentDetails）{ this.feeCategory = feeCategory; this.studentDetails = studentDetails; } @EmbeddedId @AttributeOverrides（{ @AttributeOverride（名称= feeCatId，柱= @Column（名称= fee_cat_id ，nullable = false））， @AttributeOverride（name =studentId，column = @Column（name =student_id，nullable = false））}） @ManyToOne（fetch = FetchType.EAGER） @JoinColumn（name =fee_cat_id，nullable = false）公共FeeCategory getFeeCategory（）{ return this.feeCategory; } public void setFeeCategory（FeeCategory feeCategory）{ this.feeCategory = feeCategory; } @ManyToOne（fetch = FetchType.EAGER） @JoinColumn（name =student_id，nullable = false） public StudentDetails getStudentDetails（）{返回this.studentDetails; } public void setStudentDetails（StudentDetails studentDetails）{ this.studentDetails = studentDetails; } } 以及相关实体 p> FeeCategory @Entity @Table（name =fee_category，catalog =campus_guru_01） 公共类FeeCategory implements java.io.Serializable { $ b $ private private整数feeCatId; private String feeCatName; private int parentId; private Set< AssocFeeTerms> assocFeeTermses = new HashSet< AssocFeeTerms>（0）; 私人套餐< FeeClassMapping> feeClassMappings = new HashSet< FeeClassMapping>（0）; 私人套餐< FeeTransactions> feeTransactionses = new HashSet< FeeTransactions>（0）; 私人设置< AssocFeeStudent> assocFeeStudents = new HashSet< AssocFeeStudent>（0）; $ b $公共FeeCategory（）{} 公共FeeCategory（int parentId）{ this.parentId = parentId; } 公共FeeCategory（字符串feeCatName，INT parentId的，组< AssocFeeTerms> assocFeeTermses，组< FeeClassMapping> feeClassMappings，组< FeeTransactions> feeTransactionses，组< AssocFeeStudent> assocFeeStudents）{ this.feeCatName = feeCatName; this.parentId = parentId; this.assocFeeTermses = assocFeeTermses; this.feeClassMappings = feeClassMappings; this.feeTransactionses = feeTransactionses; this.assocFeeStudents = assocFeeStudents; @Id @GeneratedValue（strategy = IDENTITY） @Column（name =fee_cat_id，unique = true，nullable = false ） public Integer getFeeCatId（）{ return this.feeCatId; } public void setFeeCatId（Integer feeCatId）{ this.feeCatId = feeCatId; @Column（name =fee_cat_name） public String getFeeCatName（）{ return this.feeCatName; } public void setFeeCatName（String feeCatName）{ this.feeCatName = feeCatName; @Column（name =parent_id，nullable = false） public int getParentId（）{ return this.parentId; } public void setParentId（int parentId）{ this.parentId = parentId; } @OneToMany（fetch = FetchType.EAGER，mappedBy =feeCategory） public Set< AssocFeeStudent> getAssocFeeStudents（）{返回this.assocFeeStudents; } 公共无效setAssocFeeStudents（设置< AssocFeeStudent> assocFeeStudents）{ this.assocFeeStudents = assocFeeStudents; } } StudentDetails @Entity @Table（name =student_details，catalog =campus_guru_01） public class StudentDetails实现java.io.Serializable { private Integer studentAdmissionId; private String isPrimaryyn; private String adsmissionNum; 私人字符串名字; 私人字符串姓氏; 私人设置< AssocFeeStudent> assocFeeStudents = new HashSet< AssocFeeStudent>（0）; @JsonIgnore @OneToMany（fetch = FetchType.EAGER，mappedBy =studentDetails） public Set< AssocFeeStudent> getAssocFeeStudents（）{返回this.assocFeeStudents; } 公共无效setAssocFeeStudents（设置< AssocFeeStudent> assocFeeStudents）{ this.assocFeeStudents = assocFeeStudents; } } 跟踪它。这是怎么回事？ 可以任何一个解决吗？ 谢谢！ 解决方案我希望您有合适的理由在您的查询中提到这种关系。 无论如何，尝试延迟获取集合，即而不是 @OneToMany（fetch = FetchType.EAGER，mappedBy =studentDetails）和 @OneToMany（fetch = FetchType.EAGER，mappedBy =feeCategory） 使用 @OneToMany（fetch = FetchType.LAZY，mappedBy =studentDetails）和 @OneToMany（fetch = FetchType.LAZY，mappedBy =feeCategory） 并且使用@JsonBackReference来提示hibernate，反向引用映射只是一个镜像而不是新映射。 PS我强烈建议你应该重新访问实体关系 i am fetching data using HQl but one strange exception occurring while querying please look at this onceat org.hibernate.loader.plan.exec.process.internal.ResultSetProcessorImpl.extractResults(ResultSetProcessorImpl.java:122) at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:122) at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:86) at org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load(AbstractLoadPlanBasedEntityLoader.java:167) at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4107) at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:508) at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:478) at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:219) at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:278) at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:121) at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:89) at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1239) at org.hibernate.internal.SessionImpl.internalLoad(SessionImpl.java:1122) at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:680) at org.hibernate.type.EntityType.resolve(EntityType.java:462) at org.hibernate.type.EntityType.resolve(EntityType.java:455) at org.hibernate.type.ComponentType.resolve(ComponentType.java:688) at org.hibernate.loader.plan.exec.process.internal.EntityReferenceInitializerImpl.resolveEntityKey(EntityReferenceInitializerImpl.java:142) at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.resolveEntityKey(AbstractRowReader.java:143) at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.readRow(AbstractRowReader.java:94) at org.hibernate.loader.plan.exec.internal.EntityLoadQueryDetails$EntityLoaderRowReader.readRow(EntityLoadQueryDetails.java:241) at org.hibernate.loader.plan.exec.process.internal.ResultSetProcessorImpl.extractResults(ResultSetProcessorImpl.java:122) at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:122) at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:86) at org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load(AbstractLoadPlanBasedEntityLoader.java:167) at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4107) at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:508) at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:478) at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:219) at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:278) at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:121) at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:89) at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1239) at org.hibernate.internal.SessionImpl.internalLoad(SessionImpl.java:1122) at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:680) at org.hibernate.type.EntityType.resolve(EntityType.java:462) at org.hibernate.type.EntityType.resolve(EntityType.java:455) at org.hibernate.type.ComponentType.resolve(ComponentType.java:688) at org.hibernate.loader.plan.exec.process.internal.EntityReferenceInitializerImpl.resolveEntityKey(EntityReferenceInitializerImpl.java:142) at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.resolveEntityKey(AbstractRowReader.java:143) at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.readRow(AbstractRowReader.java:94) at org.hibernate.loader.plan.exec.internal.EntityLoadQueryDetails$EntityLoaderRowReader.readRow(EntityLoadQueryDetails.java:241) at org.hibernate.loader.plan.exec.process.internal.ResultSetProcessorImpl.extractResults(ResultSetProcessorImpl.java:122) at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:122) at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:86) at org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load(AbstractLoadPlanBasedEntityLoader.java:167) at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4107) at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:508) at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:478) at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:219) at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:278) at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:121) at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:89) at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1239) at org.hibernate.internal.SessionImpl.internalLoad(SessionImpl.java:1122) at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:680) at org.hibernate.type.EntityType.resolve(EntityType.java:462) at org.hibernate.type.EntityType.resolve(EntityType.java:455) at org.hibernate.type.ComponentType.resolve(ComponentType.java:688) at org.hibernate.loader.plan.exec.process.internal.EntityReferenceInitializerImpl.resolveEntityKey(EntityReferenceInitializerImpl.java:142) at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.resolveEntityKey(AbstractRowReader.java:143) at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.readRow(AbstractRowReader.java:94) at org.hibernate.loader.plan.exec.internal.EntityLoadQueryDetails$EntityLoaderRowReader.readRow(EntityLoadQueryDetails.java:241) at org.hibernate.loader.plan.exec.process.internal.ResultSetProcessorImpl.extractResults(ResultSetProcessorImpl.java:122) at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:122) at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:86) at org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load(AbstractLoadPlanBasedEntityLoader.java:167) at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4107) at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:508) at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:478) at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:219) at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:278) at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:121) at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:89) at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1239) at org.hibernate.internal.SessionImpl.internalLoad(SessionImpl.java:1122) at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:680) at org.hibernate.type.EntityType.resolve(EntityType.java:462) at org.hibernate.type.EntityType.resolve(EntityType.java:455) at org.hibernate.type.ComponentType.resolve(ComponentType.java:688) at org.hibernate.loader.plan.exec.process.internal.EntityReferenceInitializerImpl.resolveEntityKey(EntityReferenceInitializerImpl.java:142) at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.resolveEntityKey(AbstractRowReader.java:143) at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.readRow(AbstractRowReader.java:94) at org.hibernate.loader.plan.exec.internal.EntityLoadQueryDetails$EntityLoaderRowReader.readRow(EntityLoadQueryDetails.java:241) at org.hibernate.loader.plan.exec.process.internal.ResultSetProcessorImpl.extractResults(ResultSetProcessorImpl.java:122) at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:122) at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:86) at org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load(AbstractLoadPlanBasedEntityLoader.java:167) at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4107) at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:508) at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:478) at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:219) at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:278) at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:121) at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:89) at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1239) at org.hibernate.internal.SessionImpl.internalLoad(SessionImpl.java:1122) at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:680) at org.hibernate.type.EntityType.resolve(EntityType.java:462) at org.hibernate.type.EntityType.resolve(EntityType.java:455) at org.hibernate.type.ComponentType.resolve(ComponentType.java:688) at org.hibernate.loader.plan.exec.process.internal.EntityReferenceInitializerImpl.resolveEntityKey(EntityReferenceInitializerImpl.java:142) at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.resolveEntityKey(AbstractRowReader.java:143) at org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.readRow(AbstractRowReader.java:94) at org.hibernate.loader.plan.exec.internal.EntityLoadQueryDetails$EntityLoaderRowReader.readRow(EntityLoadQueryDetails.java:241) at org.hibernate.loader.plan.exec.process.internal.ResultSetProcessorImpl.extractResults(ResultSetProcessorImpl.java:122) at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:122) at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:86) at org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load(AbstractLoadPlanBasedEntityLoader.java:167) at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4107) at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:508) at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:478) at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:219) at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:278) at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:121) at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:89) at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1239) at org.hibernate.internal.SessionImpl.internalLoad(SessionImpl.java:1122) at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:680) at org.hibernate.type.EntityType.resolve(EntityType.java:462) at org.hibernate.type.EntityType.resolve(EntityType.java:455) at org.hibernate.type.ComponentType.resolve(ComponentType.java:688)the above Exception getting as infinite .please look at my query currentSession = sessionFactory.getCurrentSession(); Query query = currentSession.createQuery("from AssocFeeStudent asf where asf.studentDetails.studentAdmissionId= :studentAdmissionId"); query.setParameter("studentAdmissionId", id); query.getResultList();please have a look on my entity classesAssocFeeStudent @Entity @Table(name = "assoc_fee_student", catalog = "campus_guru_01") public class AssocFeeStudent implements java.io.Serializable { private FeeCategory feeCategory; private StudentDetails studentDetails; public AssocFeeStudent() { } public AssocFeeStudent( FeeCategory feeCategory, StudentDetails studentDetails) { this.feeCategory = feeCategory; this.studentDetails = studentDetails; } @EmbeddedId @AttributeOverrides({ @AttributeOverride(name = "feeCatId", column = @Column(name = "fee_cat_id", nullable = false)), @AttributeOverride(name = "studentId", column = @Column(name = "student_id", nullable = false)) }) @ManyToOne(fetch = FetchType.EAGER) @JoinColumn(name = "fee_cat_id", nullable = false) public FeeCategory getFeeCategory() { return this.feeCategory; } public void setFeeCategory(FeeCategory feeCategory) { this.feeCategory = feeCategory; } @ManyToOne(fetch = FetchType.EAGER) @JoinColumn(name = "student_id", nullable = false) public StudentDetails getStudentDetails() { return this.studentDetails; } public void setStudentDetails(StudentDetails studentDetails) { this.studentDetails = studentDetails; } }and the dependent entities areFeeCategory @Entity@Table(name = "fee_category", catalog = "campus_guru_01")public class FeeCategory implements java.io.Serializable { private Integer feeCatId; private String feeCatName; private int parentId; private Set<AssocFeeTerms> assocFeeTermses = new HashSet<AssocFeeTerms>(0); private Set<FeeClassMapping> feeClassMappings = new HashSet<FeeClassMapping>(0); private Set<FeeTransactions> feeTransactionses = new HashSet<FeeTransactions>(0); private Set<AssocFeeStudent> assocFeeStudents = new HashSet<AssocFeeStudent>(0); public FeeCategory() { } public FeeCategory(int parentId) { this.parentId = parentId; } public FeeCategory(String feeCatName, int parentId, Set<AssocFeeTerms> assocFeeTermses, Set<FeeClassMapping> feeClassMappings, Set<FeeTransactions> feeTransactionses, Set<AssocFeeStudent> assocFeeStudents) { this.feeCatName = feeCatName; this.parentId = parentId; this.assocFeeTermses = assocFeeTermses; this.feeClassMappings = feeClassMappings; this.feeTransactionses = feeTransactionses; this.assocFeeStudents = assocFeeStudents; } @Id @GeneratedValue(strategy = IDENTITY) @Column(name = "fee_cat_id", unique = true, nullable = false) public Integer getFeeCatId() { return this.feeCatId; } public void setFeeCatId(Integer feeCatId) { this.feeCatId = feeCatId; } @Column(name = "fee_cat_name") public String getFeeCatName() { return this.feeCatName; } public void setFeeCatName(String feeCatName) { this.feeCatName = feeCatName; } @Column(name = "parent_id", nullable = false) public int getParentId() { return this.parentId; } public void setParentId(int parentId) { this.parentId = parentId; }@OneToMany(fetch = FetchType.EAGER, mappedBy = "feeCategory") public Set<AssocFeeStudent> getAssocFeeStudents() { return this.assocFeeStudents; } public void setAssocFeeStudents(Set<AssocFeeStudent> assocFeeStudents) { this.assocFeeStudents = assocFeeStudents; }}StudentDetails @Entity@Table(name = "student_details", catalog = "campus_guru_01")public class StudentDetails implements java.io.Serializable { private Integer studentAdmissionId; private String isPrimaryyn; private String adsmissionNum; private String firstname; private String lastname;private Set<AssocFeeStudent> assocFeeStudents = new HashSet<AssocFeeStudent>(0);@JsonIgnore @OneToMany(fetch = FetchType.EAGER, mappedBy = "studentDetails") public Set<AssocFeeStudent> getAssocFeeStudents() { return this.assocFeeStudents; } public void setAssocFeeStudents(Set<AssocFeeStudent> assocFeeStudents) { this.assocFeeStudents = assocFeeStudents; }}its strange to me not able to trace it . whats happening in this.can any one solve it ?thank you!. 解决方案 I hope you have proper reasons to have the kind of relationship mentioned in your query.Anyway try fetching collection lazily i.e.instead of@OneToMany(fetch = FetchType.EAGER, mappedBy = "studentDetails") and @OneToMany(fetch = FetchType.EAGER, mappedBy = "feeCategory")use@OneToMany(fetch = FetchType.LAZY, mappedBy = "studentDetails") and @OneToMany(fetch = FetchType.LAZY, mappedBy = "feeCategory")And use @JsonBackReference to hint hibernate that back reference mapping is just a mirror image instead of new mappingP.S. I strongly suggest you should revisit entity relationships 这篇关于使用休眠获取数据时无限循环的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！
09-03 13:41
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