我想使用@ManyToOne关系加入两个表。但是我在下面给出了这个错误。我还发布了模型类。我该如何解决这个错误？而且由于此错误，我的代码在这里出现了什么问题
。 ____ _ __ _ _ _ / \ / ' __ _ （）_ __ __ _ _ \ \ \ \ （（）_ |'_ |' | |' / `| \ \ \ \ \ / ）| | ）| | | | | || （ | | |）））） '| ____ | | |。 | | | | __，| / / / / ======== | _ | ============= | ___ / = / / / _ / :: Spring Boot ::（v2.1.3.RELEASE）
2019-04-04 21:10:32.886 INFO 4708 --- [ restartedMain] h.application.HandCraftApplication : Starting HandCraftApplication on A-PC with PID 4708 (C:\Users\A\Desktop\STS\HandKart\target\classes started by A in C:\Users\A\Desktop\STS\HandKart)
2019-04-04 21:10:32.891 INFO 4708 --- [ restartedMain] h.application.HandCraftApplication : No active profile set, falling back to default profiles: default
2019-04-04 21:10:33.008 INFO 4708 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
2019-04-04 21:10:33.008 INFO 4708 --- [ restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG'
2019-04-04 21:10:35.407 INFO 4708 --- [ restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode.
2019-04-04 21:10:35.472 INFO 4708 --- [ restartedMain] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 48ms. Found 0 repository interfaces.
2019-04-04 21:10:36.745 INFO 4708 --- [ restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$d628b923] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-04-04 21:10:38.396 INFO 4708 --- [ restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8081 (http)
2019-04-04 21:10:38.458 INFO 4708 --- [ restartedMain] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2019-04-04 21:10:38.458 INFO 4708 --- [ restartedMain] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.16]
2019-04-04 21:10:38.484 INFO 4708 --- [ restartedMain] o.a.catalina.core.AprLifecycleListener : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [C:\Program Files\JAVA\jre1.8.0_202\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:/Program Files/Java/jre1.8.0_202/bin/server;C:/Program Files/Java/jre1.8.0_202/bin;C:/Program Files/Java/jre1.8.0_202/lib/amd64;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Users\A\Downloads\sts-bundle\sts-3.9.7.RELEASE;;.]
2019-04-04 21:10:39.099 INFO 4708 --- [ restartedMain] org.apache.jasper.servlet.TldScanner : At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
2019-04-04 21:10:39.113 INFO 4708 --- [ restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2019-04-04 21:10:39.114 INFO 4708 --- [ restartedMain] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 6106 ms
2019-04-04 21:10:39.759 INFO 4708 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2019-04-04 21:10:40.091 INFO 4708 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2019-04-04 21:10:40.215 INFO 4708 --- [ restartedMain] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [
name: default
...]
2019-04-04 21:10:40.363 INFO 4708 --- [ restartedMain] org.hibernate.Version : HHH000412: Hibernate Core {5.3.7.Final}
2019-04-04 21:10:40.366 INFO 4708 --- [ restartedMain] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
2019-04-04 21:10:40.728 INFO 4708 --- [ restartedMain] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.0.4.Final}
2019-04-04 21:10:41.066 INFO 4708 --- [ restartedMain] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.MySQL8Dialect
2019-04-04 21:10:41.585 WARN 4708 --- [ restartedMain] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: 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: handkraft.application.model.ProductCatagory, at table: product, for columns: [org.hibernate.mapping.Column(prod_cat)]
2019-04-04 21:10:41.587 INFO 4708 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated...
2019-04-04 21:10:41.600 INFO 4708 --- [ restartedMain] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.
2019-04-04 21:10:41.608 INFO 4708 --- [ restartedMain] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2019-04-04 21:10:41.629 INFO 4708 --- [ restartedMain] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2019-04-04 21:10:41.639 ERROR 4708 --- [ restartedMain] 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: handkraft.application.model.ProductCatagory, at table: product, for columns: [org.hibernate.mapping.Column(prod_cat)]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1762) ~[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593) ~[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) ~[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1105) ~[spring-context-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) ~[spring-context-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) ~[spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) [spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) [spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) [spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]
at handkraft.application.HandCraftApplication.main(HandCraftApplication.java:10) [classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_202]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_202]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_202]
at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_202]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.1.3.RELEASE.jar:2.1.3.RELEASE]
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not determine type for: handkraft.application.model.ProductCatagory, at table: product, for columns: [org.hibernate.mapping.Column(prod_cat)]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:402) ~[spring-orm-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:377) ~[spring-orm-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1821) ~[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1758) ~[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]
... 21 common frames omitted
Caused by: org.hibernate.MappingException: Could not determine type for: handkraft.application.model.ProductCatagory, at table: product, for columns: [org.hibernate.mapping.Column(prod_cat)]
at org.hibernate.mapping.SimpleValue.getType(SimpleValue.java:486) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:453) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.mapping.Property.isValid(Property.java:226) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:624) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.mapping.RootClass.validate(RootClass.java:267) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.boot.internal.MetadataImpl.validate(MetadataImpl.java:347) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:466) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:939) ~[hibernate-core-5.3.7.Final.jar:5.3.7.Final]
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:57) ~[spring-orm-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.1.5.RELEASE.jar:5.1.5.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:390) ~[spring-orm-5.1.5.RELEASE.jar:5.1.5.RELEASE]
... 25 common frames omitted
产品类别
package handkraft.application.model;
import java.util.Date;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.validation.constraints.NotBlank;
@Entity
@Table(name = "product")
public class ProductModel {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "product_id")
private Long id;
@NotBlank(message = "Product name should not be blank")
@Column(name = "product_name")
private String productName;
@NotBlank(message = "Produc Price shoud ot be blank")
@Column(name = "product_price")
private int productPrice;
@NotBlank(message = "Product details should not be blank")
@Column(name = "product_details")
private String details;
@NotBlank(message = "Product Quantity should not blank")
@Column(name = "product_quantity")
private int quantity;
@Column(name = "product_store_date")
@Temporal(TemporalType.TIMESTAMP)
@NotBlank(message = "Date should not blank")
private Date storeDate;
private ProductCatagory prodCat;
public ProductModel() {
}
public ProductModel(Long id, String productName, int productPrice, String details, int quantity, Date storeDate,
ProductCatagory prodCat) {
super();
this.id = id;
this.productName = productName;
this.productPrice = productPrice;
this.details = details;
this.quantity = quantity;
this.storeDate = storeDate;
this.prodCat = prodCat;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getProductName() {
return productName;
}
public void setProductName(String productName) {
this.productName = productName;
}
public int getProductPrice() {
return productPrice;
}
public void setProductPrice(int productPrice) {
this.productPrice = productPrice;
}
public String getDetails() {
return details;
}
public void setDetails(String details) {
this.details = details;
}
public int getQuantity() {
return quantity;
}
public void setQuantity(int quantity) {
this.quantity = quantity;
}
public Date getStoreDate() {
return storeDate;
}
public void setStoreDate(Date storeDate) {
this.storeDate = storeDate;
}
@ManyToOne(cascade = CascadeType.ALL)
public ProductCatagory getProdCat() {
return prodCat;
}
public void setProdCat(ProductCatagory prodCat) {
this.prodCat = prodCat;
}
}
产品类别类别
package handkraft.application.model;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.validation.constraints.NotBlank;
@Entity
@Table(name="product_category")
public class ProductCatagory {
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
@Column(name="prod_cat_id")
private Long categoryId;
@NotBlank(message="Category name should not be blank")
@Column(name="cat_name")
private String categoryName;
public ProductCatagory() {
}
public ProductCatagory(Long categoryId, String categoryName) {
super();
this.categoryId = categoryId;
this.categoryName = categoryName;
}
public Long getCategoryId() {
return categoryId;
}
public void setCategoryId(Long categoryId) {
this.categoryId = categoryId;
}
public String getCategoryName() {
return categoryName;
}
public void setCategoryName(String categoryName) {
this.categoryName = categoryName;
}
}