春臺關係問題

我有兩個實體產品和圖像時，圖像有產品外鍵。春臺關係問題

當我嘗試運行代碼我得到以下錯誤

org.springframework.beans.factory.UnsatisfiedDependencyException：錯誤創建名爲「mainController」豆：不滿意依賴通過現場表示「imageRepository 「;嵌套的例外是 org.springframework.beans.factory.BeanCreationException：錯誤創建名稱爲豆「imageRepository」：失敗init方法的調用;嵌套的例外是 org.springframework.data.mapping.PropertyReferenceException：沒有物業找到的產品類型的形象！在 org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor $ AutowiredFieldElement.inject（AutowiredAnnotationBeanPostProcessor.java:588）〜[彈簧豆-4.3.11.RELEASE.jar：4.3.11.RELEASE]在 org.springframework .beans.factory.annotation.InjectionMetadata.inject（InjectionMetadata.java:88）〜[彈簧豆-4.3.11.RELEASE.jar：4.3.11.RELEASE]在 org.springframework.beans.factory.annotation。 AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues（AutowiredAnnotationBeanPostProcessor.java:366）〜[彈簧豆-4.3.11.RELEASE.jar：4.3.11.RELEASE]在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean（AbstractAutowireCapableBeanFactory.java ：1264）〜[spring-beans-4.3.11.RELEASE.jar ：4.3.11.RELEASE]在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:553）〜[彈簧豆-4.3.11.RELEASE.jar：4.3.11.RELEASE]在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:483）〜[彈簧豆-4.3.11.RELEASE.jar：4.3.11.RELEASE]在 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）〜[彈簧豆-4.3.11.RELEASE.jar：4.3.11.RELEASE]在 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）〜[彈簧豆-4.3.11.RELEASE.jar：4.3.11.RELEASE]在 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.Abstra ctApplicationContext.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]在 org.springframework.boot.SpringApplication.refreshContext（SpringApplication.java:360） [彈簧引導1.5.7.RELEASE.jar：1。org.springframework.boot.SpringApplication.run（SpringApplication.java:303） [spring-boot-1.5.7.RELEASE.jar：1.5.7.RELEASE] 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]引起： org.springframework.beans.factory。 BeanCreationException：錯誤創建名爲'imageRepository'的bean：調用init方法失敗;嵌套的例外是 org.springframework.data.mapping.PropertyReferenceException：沒有物業找到的產品類型的形象！在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean（AbstractAutowireCapableBeanFactory.java:1628）〜[彈簧豆-4.3.11.RELEASE.jar：4.3.11.RELEASE]在 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.doResol veDependency（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常見的幀被省略引起者： org.springframework.data.mapping.PropertyReferenceException：否找到類型爲Image的屬性產品！ org.springframework.data.mapping.PropertyPath。（PropertyPath.java:77）〜[spring-data-commons-1.13.7.RELEASE.jar：na] org.springframework.data.mapping.PropertyPath。創建（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。org.springframework.data.mapping.PropertyPath.from（PropertyPath.java:243）〜[spring-data-commons-1.13.7.RELEASE.jar：na] at org.springframework。數據。repository.query.parser.Part。（Part.java:76）〜[spring-data-commons-1.13.7.RELEASE.jar：na] at org.springframework.data.repository.query.parser.PartTree $ （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]在 org.springframework.data.jpa.repository.query.Par tTreeJpaQuery。（PartTreeJpaQuery.java:64）〜[spring-data-jpa-1.11.7.RELEASE.jar：na] at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy $ CreateQueryLookupStrategy.resolveQuery（JpaQueryLookupStrategy。的java：103）〜[彈簧 - 數據 - JP-A-1.11.7.RELEASE.jar：NA]在 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]在 org.springframework.data.repository.core.support.RepositoryFactorySupport $ QueryExecutorMethod攔截器（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]在 org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet（JpaRepositoryFactoryBe anjava：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個共同幀省略

產品實體

@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; 
    } 


}

圖片實體

@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; 
    } 


}

我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); 
}

感謝您的幫助傢伙！

來源

2017-09-15 vmfesta

你的倉庫應該是：

public interface ImageRepository extends CrudRepository<Image, Long> { 

    List<Image> findByProductId(Integer id); 
}

你Product實體應該是：

@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 

}

和你Image實體應該是：

@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 


}

來源

2017-09-15 18:31:26 pleft

當我真的叫端點創建一個新的產品，我如何通過產品上的父嗎？ – vmfesta

通過調用'setParentProduct'方法 – pleft

好，但它現在接受一個產品對象，我怎麼測試它郵差例如，我可以不通過產品對象 – vmfesta

請更改的名稱PRODUCT_ID到產品，並從倉庫更改String類型產品！也可以嘗試此查詢：

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

來源

2017-09-15 18:15:39

春臺關係問題

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