I'm also new to spring boot and the application seems to throw an error at compilation. While my classes look properly anotated and almost the same as in example given by the teacher
Code of entity:
package goodReadClone.WebProject.entity;
import lombok.Getter;
import lombok.Setter;
import lombok.ToString;
import javax.persistence.*;
import java.io.Serializable;
@Entity
@Getter
@Setter
@ToString
public class Shelf implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@Column
private String name;
@Column
private boolean primary;
@ManyToOne(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
private ShelfInstance shelfInstance;
}
I have almost completely copied example code adding word for word requirements from document file
code of Repository:
package goodReadClone.WebProject.repository;
import goodReadClone.WebProject.entity.Shelf;
import org.springframework.data.jpa.repository.JpaRepository;
public interface ShelfRepository extends JpaRepository<Shelf, Long>{
}
Full stack trace:
Error starting ApplicationContext. To display the condition evaluation report re-run your application with 'debug' enabled.
2023-04-19T11:13:41.311+02:00 ERROR 25992 --- [ main] o.s.boot.SpringApplication : Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'shelfRepository' defined in goodReadClone.WebProject.repository.ShelfRepository defined in @EnableJpaRepositories declared on WebProjectApplication: Not a managed type: class goodReadClone.WebProject.entity.Shelf
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1770) ~[spring-beans-6.0.7.jar:6.0.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:598) ~[spring-beans-6.0.7.jar:6.0.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:520) ~[spring-beans-6.0.7.jar:6.0.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326) ~[spring-beans-6.0.7.jar:6.0.7]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-6.0.7.jar:6.0.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[spring-beans-6.0.7.jar:6.0.7]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-6.0.7.jar:6.0.7]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:967) ~[spring-beans-6.0.7.jar:6.0.7]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:917) ~[spring-context-6.0.7.jar:6.0.7]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:584) ~[spring-context-6.0.7.jar:6.0.7]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) ~[spring-boot-3.0.5.jar:3.0.5]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:732) ~[spring-boot-3.0.5.jar:3.0.5]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434) ~[spring-boot-3.0.5.jar:3.0.5]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:310) ~[spring-boot-3.0.5.jar:3.0.5]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1304) ~[spring-boot-3.0.5.jar:3.0.5]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1293) ~[spring-boot-3.0.5.jar:3.0.5]
at goodReadClone.WebProject.WebProjectApplication.main(WebProjectApplication.java:19) ~[classes/:na]
Caused by: java.lang.IllegalArgumentException: Not a managed type: class goodReadClone.WebProject.entity.Shelf
at org.hibernate.metamodel.model.domain.internal.JpaMetamodelImpl.managedType(JpaMetamodelImpl.java:181) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.metamodel.model.domain.internal.MappingMetamodelImpl.managedType(MappingMetamodelImpl.java:496) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.metamodel.model.domain.internal.MappingMetamodelImpl.managedType(MappingMetamodelImpl.java:99) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.springframework.data.jpa.repository.support.JpaMetamodelEntityInformation.<init>(JpaMetamodelEntityInformation.java:77) ~[spring-data-jpa-3.0.4.jar:3.0.4]
at org.springframework.data.jpa.repository.support.JpaEntityInformationSupport.getEntityInformation(JpaEntityInformationSupport.java:69) ~[spring-data-jpa-3.0.4.jar:3.0.4]
at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getEntityInformation(JpaRepositoryFactory.java:246) ~[spring-data-jpa-3.0.4.jar:3.0.4]
at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetRepository(JpaRepositoryFactory.java:211) ~[spring-data-jpa-3.0.4.jar:3.0.4]
at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetRepository(JpaRepositoryFactory.java:194) ~[spring-data-jpa-3.0.4.jar:3.0.4]
at org.springframework.data.jpa.repository.support.JpaRepositoryFactory.getTargetRepository(JpaRepositoryFactory.java:81) ~[spring-data-jpa-3.0.4.jar:3.0.4]
at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:317) ~[spring-data-commons-3.0.4.jar:3.0.4]
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.lambda$afterPropertiesSet$5(RepositoryFactoryBeanSupport.java:279) ~[spring-data-commons-3.0.4.jar:3.0.4]
at org.springframework.data.util.Lazy.getNullable(Lazy.java:245) ~[spring-data-commons-3.0.4.jar:3.0.4]
at org.springframework.data.util.Lazy.get(Lazy.java:114) ~[spring-data-commons-3.0.4.jar:3.0.4]
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:285) ~[spring-data-commons-3.0.4.jar:3.0.4]
at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:132) ~[spring-data-jpa-3.0.4.jar:3.0.4]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1816) ~[spring-beans-6.0.7.jar:6.0.7]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1766) ~[spring-beans-6.0.7.jar:6.0.7]
... 16 common frames omitted
Process finished with exit code 1
I added @EnableJpaRepositories and @EntityScan as internet suggested but it still doesn't work
Main application file:
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
@SpringBootApplication
@EnableJpaRepositories(basePackages = "goodReadClone.WebProject.repository")
@EntityScan(basePackages = "goodReadClone.WebProject.entity")
public class WebProjectApplication {
public static void main(String[] args) {
SpringApplication.run(WebProjectApplication.class, args);
}
}
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