hibernate实体类注解错误Could not determine type for: java.util.Set

本文解决了一个常见的Hibernate问题:Could not determine type for: Java.util.Set。错误发生在配置实体类注解时,文章强调了注解使用的正确方式,避免混合使用字段和getXX上的注解。

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今天配置实体类注解时,出现以下错误:

         Caused by: org.hibernate.MappingException: Could not determine typefor: Java.util.Set, at table: test_plan, for columns:[org.hibernate.mapping.Column(routing_case)]

 

解决方案:注解要么写在字段上,要么写在getXX上,千万千万不能混合使用,否则会报这个错误!

2025-06-06 16:30:36.012 ERROR 6348 --- [ main] o.s.boot.SpringApplication : Application run failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not determine type for: com.kucun.data.entity.Bancai, at table: jinhuo, for columns: [org.hibernate.mapping.Column(bancai)] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1799) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE] at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1109) ~[spring-context-5.2.15.RELEASE.jar:5.2.15.RELEASE] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869) ~[spring-context-5.2.15.RELEASE.jar:5.2.15.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551) ~[spring-context-5.2.15.RELEASE.jar:5.2.15.RELEASE] at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:755) ~[spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) ~[spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:402) ~[spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:312) ~[spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE] at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:173) [spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE] at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:153) [spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE] at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:95) [spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE] at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:172) [spring-web-5.2.15.RELEASE.jar:5.2.15.RELEASE] at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5128) [catalina.jar:9.0.37] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [catalina.jar:9.0.37] at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:717) [catalina.jar:9.0.37] at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:690) [catalina.jar:9.0.37] at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:705) [catalina.jar:9.0.37] at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1133) [catalina.jar:9.0.37] at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1866) [catalina.jar:9.0.37] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_331] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_331] at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) [tomcat-util.jar:9.0.37] at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:112) [na:1.8.0_331] at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:1045) [catalina.jar:9.0.37] at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:429) [catalina.jar:9.0.37] at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1576) [catalina.jar:9.0.37] at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:309) [catalina.jar:9.0.37] at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123) [catalina.jar:9.0.37] at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:423) [catalina.jar:9.0.37] at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:366) [catalina.jar:9.0.37] at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:936) [catalina.jar:9.0.37] at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841) [catalina.jar:9.0.37] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [catalina.jar:9.0.37] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) [catalina.jar:9.0.37] at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) [catalina.jar:9.0.37] at java.util.concurrent.FutureTask.run(FutureTask.java:266) [na:1.8.0_331] at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) [tomcat-util.jar:9.0.37] at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134) [na:1.8.0_331] at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) [catalina.jar:9.0.37] at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) [catalina.jar:9.0.37] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [catalina.jar:9.0.37] at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421) [catalina.jar:9.0.37] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [catalina.jar:9.0.37] at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) [catalina.jar:9.0.37] at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [catalina.jar:9.0.37] at org.apache.catalina.startup.Catalina.start(Catalina.java:738) [catalina.jar:9.0.37] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_331] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_331] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_331] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_331] at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:342) [bootstrap.jar:9.0.37] at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:473) [bootstrap.jar:9.0.37] Caused by: javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not determine type for: com.kucun.data.entity.Bancai, at table: jinhuo, for columns: [org.hibernate.mapping.Column(bancai)] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:403) ~[spring-orm-5.2.15.RELEASE.jar:5.2.15.RELEASE] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:378) ~[spring-orm-5.2.15.RELEASE.jar:5.2.15.RELEASE] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.2.15.RELEASE.jar:5.2.15.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1858) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1795) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE] ... 58 common frames omitted Caused by: org.hibernate.MappingException: Could not determine type for: com.kucun.data.entity.Bancai, at table: jinhuo, for columns: [org.hibernate.mapping.Column(bancai)] at org.hibernate.mapping.SimpleValue.getType(SimpleValue.java:499) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final] at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:466) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final] at org.hibernate.mapping.Property.isValid(Property.java:227) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final] at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:624) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final] at org.hibernate.mapping.RootClass.validate(RootClass.java:267) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final] at org.hibernate.boot.internal.MetadataImpl.validate(MetadataImpl.java:354) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final] at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:298) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final] at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:468) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final] at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1259) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final] at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.2.15.RELEASE.jar:5.2.15.RELEASE] at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.2.15.RELEASE.jar:5.2.15.RELEASE] at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:391) ~[spring-orm-5.2.15.RELEASE.jar:5.2.15.RELEASE] ... 62 common frames omitted
最新发布
06-07
<think>我们分析错误信息:`Couldnotdeterminetypefor:com.kucun.data.entity.Bancai,attable:jinhuo,forcolumns:[org.hibernate.mapping.Column(bancai)]`这个错误通常发生在Hibernate无法映射实体类的某个字段时。具体来说,在表`jinhuo`中,有一个名为`bancai`的列,Hibernate无法确定它的类型(即对应的Java类型)。可能的原因:1.该字段对应的Java类型`com.kucun.data.entity.Bancai`不是一个Hibernate可映射的类型(例如,不是基本类型、String、Date等,也不是@Entity实体类型)。2.如果`Bancai`是一个自定义类型(比如值对象),但没有使用`@Embeddable`注解,或者没有使用`@Type`注解指定自定义类型。3.如果`Bancai`是一个实体类,可能缺少`@Entity`注解,或者没有正确配置关联关系(例如,应该用`@ManyToOne`等关联注解,但实际没有用)。根据错误信息,我们猜测在实体类`Jinhuo`(对应表jinhuo)中有一个字段`bancai`,它的类型是`Bancai`。现在Hibernate不知道如何将这个字段映射到数据库。解决方案:情况1:如果`Bancai`是一个实体类(即对应数据库中的另一张表),那么应该在`Jinhuo`实体类中,使用关联注解(如`@ManyToOne`)来映射。情况2:如果`Bancai`不是一个实体,而是一个值对象(即嵌入到`Jinhuo`实体中的一部分),那么应该使用`@Embeddable`和`@Embedded`注解。步骤:1.检查`Bancai`类的类型。-如果它是实体,则在`Jinhuo`实体中,应该这样写:```java@ManyToOne//或其他关联关系@JoinColumn(name="bancai_id")//这里需要指定外键列名,假设数据库中外键列是bancai_idprivateBancaibancai;```注意:上面的列名`bancai_id`需要和数据库中的列名一致。而错误中出现的列名是`bancai`,所以也可能是:```java@ManyToOne@JoinColumn(name="bancai")//如果数据库中列名就是bancaiprivateBancaibancai;```-如果它是值对象,则在`Bancai`类上添加`@Embeddable`,然后在`Jinhuo`实体中这样写:```java@EmbeddedprivateBancaibancai;```并且,确保`Bancai`类中的字段能够正确映射到数据库表中的列(通常这些列会在`jinhuo`表中,前缀可能是`bancai_`,或者通过`@AttributeOverrides`自定义)。2.如果上述都不是,那么可能是`Bancai`类没有被Hibernate扫描到。确保它位于`@EntityScan`指定的包下,或者位于主应用类的子包中。示例代码:情况1:使用关联关系(假设是多对一)```java//在Jinhuo实体类中@Entity@Table(name="jinhuo")publicclassJinhuo{//...其他字段@ManyToOne@JoinColumn(name="bancai")//注意这里的name="bancai"对应数据库中jinhuo表的外键列privateBancaibancai;//getterandsetter}//Bancai是一个实体@Entity@Table(name="bancai")publicclassBancai{//...}```情况2:使用嵌入对象```java//在Jinhuo实体类中@Entity@Table(name="jinhuo")publicclassJinhuo{//...其他字段@EmbeddedprivateBancaibancai;//getterandsetter}//Bancai是一个值对象@EmbeddablepublicclassBancai{privateStringproperty1;privateintproperty2;//...gettersandsetters}```注意:使用嵌入对象时,数据库表`jinhuo`中必须有对应的列,比如`property1`和`property2`,默认列名可能是`bancai_property1`和`bancai_property2`(取决于命名策略)。如果列名不同,可以使用`@AttributeOverride`。3.如果`Bancai`既不是实体也不是值对象,而是一个普通的POJO,那么我们需要考虑如何映射。Hibernate不支持直接映射普通POJO到单个列。所以可能需要重新设计,或者将该字段改为基本类型。错误预防:-在定义实体类时,明确字段的类型:是基本类型、关联实体还是嵌入对象。-使用JPA注解时,注意关联关系需要用关联注解(如`@ManyToOne`),嵌入对象需要用`@Embeddable`和`@Embedded`。如果问题仍然存在,建议检查:-`Bancai`类是否在同一个持久化单元中(即是否被扫描到)。-是否有两个同名的类导致混淆。最后,确保在`Jinhuo`实体中,`bancai`字段的注解没有遗漏。由于错误日志已经指明是`bancai`列的类型无法确定,所以我们聚焦于该字段的映射。根据以上分析,请检查实体类`Jinhuo`中关于`bancai`字段的定义,并根据`Bancai`的类型选择合适的映射方式。</think> ### 错误分析与解决方案 **核心问题**:Hibernate无法确定 `jinhuo` 表中 `bancai` 列对应的类型。原因是在 `Jinhuo` 实体类中未正确定义 `bancai` 属性的关联关系或类型映射。 #### 常见原因: 1. **缺少关联关系注解**:实体类中未使用 `@ManyToOne`、`@OneToOne` 等关联关系注解 2. **缺少基本类型注解**:未使用 `@Column` 或类似注解指定基本类型 3. **自定义类型未注册**:使用自定义类型时未实现 `UserType` 接口并注册 4. **包扫描问题**:关联实体类未被JPA扫描到 --- ### 解决方案代码 #### 情况1:Bancai是关联实体(推荐) ```java // Jinhuo.java @Entity @Table(name = "jinhuo") public class Jinhuo { // 其他属性... @ManyToOne // 或 @OneToOne @JoinColumn(name = "bancai") // 匹配数据库列名 private Bancai bancai; // Bancai必须是 @Entity 类 // Getter/Setter... } // Bancai.java @Entity @Table(name = "bancai") public class Bancai { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; // 其他属性 & Getter/Setter... } ``` #### 情况2:Bancai是基本属性 ```java // Jinhuo.java @Entity @Table(name = "jinhuo") public class Jinhuo { // 其他属性... @Column(name = "bancai") // 显式映射数据库列 private String bancai; // 使用基本类型 String/Integer 等 // Getter/Setter... } ``` #### 情况3:Bancai是自定义类型 ```java // BancaiUserType.java public class BancaiUserType implements UserType { // 实现自定义类型转换逻辑 @Override public int[] sqlTypes() { return new int[]{Types.VARCHAR}; } @Override public Class returnedClass() { return Bancai.class; } // ...其他方法实现 } // Jinhuo.java @Entity @Table(name = "jinhuo") @TypeDef(name = "bancaiType", typeClass = BancaiUserType.class) public class Jinhuo { @Type(type = "bancaiType") @Column(name = "bancai") private Bancai bancai; // 自定义值对象 } ``` --- ### 配置检查 1. **包扫描配置**:确保所有实体类在扫描路径内 ```java @SpringBootApplication @EntityScan("com.kucun.data.entity") // 显式指定实体包 public class Application { ... } ``` 2. **调试配置**:添加日志配置查看Hibernate DDL ```properties # application.properties spring.jpa.show-sql=true spring.jpa.properties.hibernate.format_sql=true logging.level.org.hibernate.SQL=DEBUG logging.level.org.hibernate.type.descriptor.sql.BasicBinder=TRACE ``` --- ### 错误预防建议 1. **强制关联注解**:所有非基本类型字段必须添加JPA关系注解 2. **启用编译检查**:使用Lombok `@NonNull` 或 IDE检查 3. **DDL验证策略**:开发环境启用自动更新 ```properties spring.jpa.hibernate.ddl-auto=validate // 启动时验证表结构 ```
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