Spring table relationship problems

Question

I have two entities Product and Image, the image has a Product foreign key.

When i try to run the code i get the following error

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'mainController': Unsatisfied dependency expressed through field 'imageRepository'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'imageRepository': Invocation of init method failed; nested exception is org.springframework.data.mapping.PropertyReferenceException: No property product found for type Image! at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:588) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) ~[spring-context-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543) ~[spring-context-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.7.RELEASE.jar:1.5.7.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) [spring-boot-1.5.7.RELEASE.jar:1.5.7.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360) [spring-boot-1.5.7.RELEASE.jar:1.5.7.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [spring-boot-1.5.7.RELEASE.jar:1.5.7.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118) [spring-boot-1.5.7.RELEASE.jar:1.5.7.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107) [spring-boot-1.5.7.RELEASE.jar:1.5.7.RELEASE] at model.Application.main(Application.java:10) [classes/:na] Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'imageRepository': Invocation of init method failed; nested exception is org.springframework.data.mapping.PropertyReferenceException: No property product found for type Image! at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1628) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:208) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:585) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] ... 19 common frames omitted Caused by: org.springframework.data.mapping.PropertyReferenceException: No property product found for type Image! at org.springframework.data.mapping.PropertyPath.(PropertyPath.java:77) ~[spring-data-commons-1.13.7.RELEASE.jar:na] at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:329) ~[spring-data-commons-1.13.7.RELEASE.jar:na] at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:309) ~[spring-data-commons-1.13.7.RELEASE.jar:na] at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:272) ~[spring-data-commons-1.13.7.RELEASE.jar:na] at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:243) ~[spring-data-commons-1.13.7.RELEASE.jar:na] at org.springframework.data.repository.query.parser.Part.(Part.java:76) ~[spring-data-commons-1.13.7.RELEASE.jar:na] at org.springframework.data.repository.query.parser.PartTree$OrPart.(PartTree.java:247) ~[spring-data-commons-1.13.7.RELEASE.jar:na] at org.springframework.data.repository.query.parser.PartTree$Predicate.buildTree(PartTree.java:398) ~[spring-data-commons-1.13.7.RELEASE.jar:na] at org.springframework.data.repository.query.parser.PartTree$Predicate.(PartTree.java:378) ~[spring-data-commons-1.13.7.RELEASE.jar:na] at org.springframework.data.repository.query.parser.PartTree.(PartTree.java:89) ~[spring-data-commons-1.13.7.RELEASE.jar:na] at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.(PartTreeJpaQuery.java:64) ~[spring-data-jpa-1.11.7.RELEASE.jar:na] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:103) ~[spring-data-jpa-1.11.7.RELEASE.jar:na] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateIfNotFoundQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:214) ~[spring-data-jpa-1.11.7.RELEASE.jar:na] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:77) ~[spring-data-jpa-1.11.7.RELEASE.jar:na] at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.(RepositoryFactorySupport.java:436) ~[spring-data-commons-1.13.7.RELEASE.jar:na] at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:221) ~[spring-data-commons-1.13.7.RELEASE.jar:na] at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.initAndReturn(RepositoryFactoryBeanSupport.java:277) ~[spring-data-commons-1.13.7.RELEASE.jar:na] at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet(RepositoryFactoryBeanSupport.java:263) ~[spring-data-commons-1.13.7.RELEASE.jar:na] at org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet(JpaRepositoryFactoryBean.java:101) ~[spring-data-jpa-1.11.7.RELEASE.jar:na] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1687) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624) ~[spring-beans-4.3.11.RELEASE.jar:4.3.11.RELEASE] ... 29 common frames omitted

Product entity

@Entity
@Table(name = "product")
public class Product {
    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    private Integer id;

    private String name;

    private String description;

    private Integer parent_product_id;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }

    public Integer getParent_product_id() {
        return parent_product_id;
    }

    @OneToMany
    @JoinColumn(name = "product_id")
    public void setParent_product_id(Integer parent_product_id) {
        this.parent_product_id = parent_product_id;
    }


}

Image Entity

@Entity
public class Image {
    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    private Integer id;

    private String type;

    @ManyToOne
    private Product product_id;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public Product getParent_product_id() {
        return product_id;
    }

    public void setProduct_id(Product product_id) {
        this.product_id = product_id;
    }


}

My ImageRepository

package model;

import org.springframework.data.repository.CrudRepository;

import java.util.List;

// This will be AUTO IMPLEMENTED by Spring into a Bean called userRepository
// CRUD refers Create, Read, Update, Delete

public interface ImageRepository extends CrudRepository<Image, Long> {

    List<Image> findByProduct_id(String id);
}

Thanks for the help guys!

Answer 1

Your repository should be:

public interface ImageRepository extends CrudRepository<Image, Long> {

    List<Image> findByProductId(Integer id);
}

Your Product Entity should be:

@Entity
@Table(name = "product")
public class Product {
    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    private Integer id;

    private String name;

    private String description;

    @Transient
    private Integer parentId;

    @ManyToOne
    @JoinColumn(name="parent_id")
    private Product parentProduct;

    //getters/setters

}

And your Image Entity should be:

@Entity
@Table(name = "image")
public class Image {
    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    private Integer id;

    private String type;

    @ManyToOne
    @JoinColumn(name = "product_id")
    private Product product;

    //getters/setters


}

Answer 2

Please change the name of the product_id to product and change the String type from the repository to Product ! Also try this query :

@Query("select * from Image image where image.product=:product")
List<Image> findByProduct(@Param("product") Product product);