No identifier specified for entity异常解决

悠悠 2023-01-17 13:52 155阅读 0赞

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 org.hibernate.AnnotationException: No identifier specified for entity: com.movie.comment.movie.web.entity.UserRelation  
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1786) ~\[spring-beans-5.3.6.jar:5.3.6\]  
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:602) ~\[spring-beans-5.3.6.jar:5.3.6\]  
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~\[spring-beans-5.3.6.jar:5.3.6\]  
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~\[spring-beans-5.3.6.jar:5.3.6\]  
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~\[spring-beans-5.3.6.jar:5.3.6\]  
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~\[spring-beans-5.3.6.jar:5.3.6\]  
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~\[spring-beans-5.3.6.jar:5.3.6\]  
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1154) ~\[spring-context-5.3.6.jar:5.3.6\]  
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:908) ~\[spring-context-5.3.6.jar:5.3.6\]  
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~\[spring-context-5.3.6.jar:5.3.6\]  
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~\[spring-boot-2.4.5.jar:2.4.5\]  
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:782) \[spring-boot-2.4.5.jar:2.4.5\]  
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:774) \[spring-boot-2.4.5.jar:2.4.5\]  
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:439) \[spring-boot-2.4.5.jar:2.4.5\]  
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:339) \[spring-boot-2.4.5.jar:2.4.5\]  
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1340) \[spring-boot-2.4.5.jar:2.4.5\]  
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1329) \[spring-boot-2.4.5.jar:2.4.5\]  
    at com.movie.comment.movie.MovieApplication.main(MovieApplication.java:10) \[classes/:na\]  
Caused by: org.hibernate.AnnotationException: No identifier specified for entity: com.movie.comment.movie.web.entity.UserRelation  
    at org.hibernate.cfg.InheritanceState.determineDefaultAccessType(InheritanceState.java:266) ~\[hibernate-core-5.4.30.Final.jar:5.4.30.Final\]  
    at org.hibernate.cfg.InheritanceState.getElementsToProcess(InheritanceState.java:211) ~\[hibernate-core-5.4.30.Final.jar:5.4.30.Final\]  
    at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:785) ~\[hibernate-core-5.4.30.Final.jar:5.4.30.Final\]  
    at org.hibernate.boot.model.source.internal.annotations.AnnotationMetadataSourceProcessorImpl.processEntityHierarchies(AnnotationMetadataSourceProcessorImpl.java:248) ~\[hibernate-core-5.4.30.Final.jar:5.4.30.Final\]  
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess$1.processEntityHierarchies(MetadataBuildingProcess.java:239) ~\[hibernate-core-5.4.30.Final.jar:5.4.30.Final\]  
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:282) ~\[hibernate-core-5.4.30.Final.jar:5.4.30.Final\]  
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1224) ~\[hibernate-core-5.4.30.Final.jar:5.4.30.Final\]  
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1255) ~\[hibernate-core-5.4.30.Final.jar:5.4.30.Final\]  
    at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~\[spring-orm-5.3.6.jar:5.3.6\]  
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~\[spring-orm-5.3.6.jar:5.3.6\]  
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~\[spring-orm-5.3.6.jar:5.3.6\]  
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~\[spring-orm-5.3.6.jar:5.3.6\]  
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~\[spring-orm-5.3.6.jar:5.3.6\]  
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1845) ~\[spring-beans-5.3.6.jar:5.3.6\]  
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1782) ~\[spring-beans-5.3.6.jar:5.3.6\]  
    ... 17 common frames omitted

其实我们观察异常错误，不用多想这个是实体类创建错误，我这里使用的JPA所以，直接找实体类就好，不要犹豫这里给出我的错误，希望你能用上吧

## 如果你的@ID引用的是org.springframework.data.annotation.Id; ##

## 那么你需要更换为 import javax.persistence.Id;好了问题解决 ##

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