问题：
Hibernate实用类
姬宝
我正在尝试重写我拥有的 java 应用程序，因为我对数据库进行了许多更改。我复制/粘贴了我拥有的HibernateUtil类到我的新应用程序中。而且它似乎:(不起作用.
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
public class HibernateUtil {
private static ThreadLocal<Session> threadLocal = new ThreadLocal<Session>();
private static SessionFactory sessionFactory = null;
static {
sessionFactory = new Configuration().configure("hibernate.cfg.xml").buildSessionFactory();
}
public static Session getSession() {
Session session = null;
if (threadLocal.get() == null) {
// Create Session object
session = sessionFactory.openSession();
threadLocal.set(session);
} else {
session = threadLocal.get();
}
return session;
}
public static void closeSession() {
Session session = null;
if (threadLocal.get() != null) {
session = threadLocal.get();
session.close();
threadLocal.remove();
}
}
public static void closeSessionFactory() {
sessionFactory.close();
}
}
这就是我得到的错误：
Exception in thread "Thread-1" Exception in Application constructor
java.lang.ExceptionInInitializerError
at Mach.lambda$main$0(Mach.java:58)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: org.hibernate.MappingException: property mapping has wrong number of columns: Entities.ObjectEntity.info type: object
at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:629)
at org.hibernate.mapping.RootClass.validate(RootClass.java:267)
at org.hibernate.boot.internal.MetadataImpl.validate(MetadataImpl.java:351)
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:464)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:708)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:724)
at Utility.HibernateUtil.<clinit>(HibernateUtil.java:12)
... 2 more
java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplicationWithArgs(LauncherImpl.java:473)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication(LauncherImpl.java:372)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at java.base/sun.launcher.LauncherHelper$FXHelper.main(LauncherHelper.java:1051)
Caused by: java.lang.RuntimeException: Unable to construct Application instance: class Mach
at javafx.graphics/com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:963)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:198)
at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at javafx.graphics/com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$8(LauncherImpl.java:875)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runAndWait$11(PlatformImpl.java:449)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$9(PlatformImpl.java:418)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at javafx.graphics/com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:417)
at javafx.graphics/com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at javafx.graphics/com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at javafx.graphics/com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:175)
... 1 more
Caused by: java.lang.NoClassDefFoundError: Could not initialize class Utility.HibernateUtil
at Models.UserIM.<init>(UserIM.java:18)
at Mach.<init>(Mach.java:30)
... 13 more
Exception running application Mach
此外，如果你能帮我建立自己的，我将非常感激。虽然现在，我只想完成我的应用程序。我已经为新的需求重建数据库工作了很多天，我已经准备好了几乎所有的代码，我一直在做这件事：/感觉很糟糕。我已经检查了我的hibernate.cfg。xml文件，看起来不错！
下面是我的实体类:
package Entities;
import javax.persistence.*;
import java.math.BigDecimal;
import java.util.Objects;
@Entity
@Table(name = "user_is_worker", schema = "walker", catalog = "")
public class UserIsWorkerEntity {
private String workerId;
private String userLogName;
private String userLogPass;
private String amka;
private String afm;
private BigDecimal salary;
private Byte bonusProgram;
private UserEntity userByWorkerId;
private UserIsWorkerEntity userIsWorkerBySupervisor;
private PermisEntity permisByPermisId;
@Id
@Column(name = "WorkerID", nullable = false, length = 20)
public String getWorkerId() {
return workerId;
}
public void setWorkerId(String workerId) {
this.workerId = workerId;
}
@Basic
@Column(name = "UserLogName", nullable = true, length = 15)
public String getUserLogName() {
return userLogName;
}
public void setUserLogName(String userLogName) {
this.userLogName = userLogName;
}
@Basic
@Column(name = "UserLogPass", nullable = true, length = 15)
public String getUserLogPass() {
return userLogPass;
}
public void setUserLogPass(String userLogPass) {
this.userLogPass = userLogPass;
}
@Basic
@Column(name = "AMKA", nullable = true, length = 12)
public String getAmka() {
return amka;
}
public void setAmka(String amka) {
this.amka = amka;
}
@Basic
@Column(name = "AFM", nullable = true, length = 9)
public String getAfm() {
return afm;
}
public void setAfm(String afm) {
this.afm = afm;
}
@Basic
@Column(name = "Salary", nullable = true, precision = 2)
public BigDecimal getSalary() {
return salary;
}
public void setSalary(BigDecimal salary) {
this.salary = salary;
}
@Basic
@Column(name = "BonusProgram", nullable = true)
public Byte getBonusProgram() {
return bonusProgram;
}
public void setBonusProgram(Byte bonusProgram) {
this.bonusProgram = bonusProgram;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
UserIsWorkerEntity that = (UserIsWorkerEntity) o;
return Objects.equals(workerId, that.workerId) &&
Objects.equals(userLogName, that.userLogName) &&
Objects.equals(userLogPass, that.userLogPass) &&
Objects.equals(amka, that.amka) &&
Objects.equals(afm, that.afm) &&
Objects.equals(salary, that.salary) &&
Objects.equals(bonusProgram, that.bonusProgram);
}
@Override
public int hashCode() {
return Objects.hash(workerId, userLogName, userLogPass, amka, afm, salary, bonusProgram);
}
@OneToOne
@JoinColumn(name = "WorkerID", referencedColumnName = "UserID", nullable = false)
public UserEntity getUserByWorkerId() {
return userByWorkerId;
}
public void setUserByWorkerId(UserEntity userByWorkerId) {
this.userByWorkerId = userByWorkerId;
}
@ManyToOne
@JoinColumn(name = "Supervisor", referencedColumnName = "WorkerID")
public UserIsWorkerEntity getUserIsWorkerBySupervisor() {
return userIsWorkerBySupervisor;
}
public void setUserIsWorkerBySupervisor(UserIsWorkerEntity userIsWorkerBySupervisor) {
this.userIsWorkerBySupervisor = userIsWorkerBySupervisor;
}
@ManyToOne
@JoinColumn(name = "PermisID", referencedColumnName = "PermisID")
public PermisEntity getPermisByPermisId() {
return permisByPermisId;
}
public void setPermisByPermisId(PermisEntity permisByPermisId) {
this.permisByPermisId = permisByPermisId;
}
}
这是与前一个相关的表的实体:
package Entities;
import javax.persistence.*;
import java.sql.Date;
import java.util.Objects;
@Entity
@Table(name = "user", schema = "walker", catalog = "")
public class UserEntity {
private String userId;
private String name;
private String surname;
private Date birthday;
private UserIsShopkeeperEntity userIsShopkeeperByUserId;
private UserIsWorkerEntity userIsWorkerByUserId;
@Id
@Column(name = "UserID", nullable = false, length = 20)
public String getUserId() {
return userId;
}
public void setUserId(String userId) {
this.userId = userId;
}
@Basic
@Column(name = "Name", nullable = true, length = 35)
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Basic
@Column(name = "Surname", nullable = true, length = 35)
public String getSurname() {
return surname;
}
public void setSurname(String surname) {
this.surname = surname;
}
@Basic
@Column(name = "Birthday", nullable = true)
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
UserEntity that = (UserEntity) o;
return Objects.equals(userId, that.userId) &&
Objects.equals(name, that.name) &&
Objects.equals(surname, that.surname) &&
Objects.equals(birthday, that.birthday);
}
@Override
public int hashCode() {
return Objects.hash(userId, name, surname, birthday);
}
@OneToOne(mappedBy = "userByShopKeeperId")
public UserIsShopkeeperEntity getUserIsShopkeeperByUserId() {
return userIsShopkeeperByUserId;
}
public void setUserIsShopkeeperByUserId(UserIsShopkeeperEntity userIsShopkeeperByUserId) {
this.userIsShopkeeperByUserId = userIsShopkeeperByUserId;
}
@OneToOne(mappedBy = "userByWorkerId")
public UserIsWorkerEntity getUserIsWorkerByUserId() {
return userIsWorkerByUserId;
}
public void setUserIsWorkerByUserId(UserIsWorkerEntity userIsWorkerByUserId) {
this.userIsWorkerByUserId = userIsWorkerByUserId;
}
}
最后，这是我的hibernate.cfg.xml文件：
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="connection.url">jdbc:mysql://localhost:3306/walker</property>
<property name="connection.driver_class">com.mysql.cj.jdbc.Driver</property>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="connection.username">root</property>
<property name="connection.password">root</property>
<property name="format_sql">true</property>
<property name="show_sql">true</property>
<mapping class="Entities.ActivationEntity"/>
<mapping class="Entities.AutomaticSoftwareEntity"/>
<mapping class="Entities.CanisterEntity"/>
<mapping class="Entities.ChargeEntity"/>
<mapping class="Entities.CityEntity"/>
<mapping class="Entities.ColorVersionEntity"/>
<mapping class="Entities.CompanyEntity"/>
<mapping class="Entities.ComTypeEntity"/>
<mapping class="Entities.ContractEntity"/>
<mapping class="Entities.ContractEventEntity"/>
<mapping class="Entities.CountryEntity"/>
<mapping class="Entities.CustomerEntity"/>
<mapping class="Entities.CustomerHasRequestsEntity"/>
<mapping class="Entities.CustomerHasShopkeepersEntity"/>
<mapping class="Entities.CustomerHasTargetsEntity"/>
<mapping class="Entities.CustomerHasVersionsEntity"/>
<mapping class="Entities.DepartmentEntity"/>
<mapping class="Entities.DispenserTechEntity"/>
<mapping class="Entities.EventEntity"/>
<mapping class="Entities.MachineAgeEntity"/>
<mapping class="Entities.MailEntity"/>
<mapping class="Entities.ModelEntity"/>
<mapping class="Entities.ModelHasPartsEntity"/>
<mapping class="Entities.ModelDispenserEntity"/>
<mapping class="Entities.ModelPartEntity"/>
<mapping class="Entities.ModelRootEntity"/>
<mapping class="Entities.ModelTypeEntity"/>
<mapping class="Entities.MonitorEntity"/>
<mapping class="Entities.MonitorPanelEntity"/>
<mapping class="Entities.ObjectEntity"/>
<mapping class="Entities.ObjectEventEntity"/>
<mapping class="Entities.PartEntity"/>
<mapping class="Entities.PcEntity"/>
<mapping class="Entities.PermisEntity"/>
<mapping class="Entities.PhoneEntity"/>
<mapping class="Entities.PrinterEntity"/>
<mapping class="Entities.PriorityEntity"/>
<mapping class="Entities.PumpEntity"/>
<mapping class="Entities.RegionEntity"/>
<mapping class="Entities.RequestsEntity"/>
<mapping class="Entities.RoleEntity"/>
<mapping class="Entities.SectionEntity"/>
<mapping class="Entities.ShakerEntity"/>
<mapping class="Entities.ShakerTypeEntity"/>
<mapping class="Entities.ShelfEntity"/>
<mapping class="Entities.SpectroEntity"/>
<mapping class="Entities.StatusEntity"/>
<mapping class="Entities.StatusHasStoreEntity"/>
<mapping class="Entities.StoreEntity"/>
<mapping class="Entities.SupplierEntity"/>
<mapping class="Entities.SupplierHasVendorsEntity"/>
<mapping class="Entities.TeamviewerEntity"/>
<mapping class="Entities.UpsEntity"/>
<mapping class="Entities.UserEntity"/>
<mapping class="Entities.UserHasEmailsEntity"/>
<mapping class="Entities.UserHasPhonesEntity"/>
<mapping class="Entities.UserIsShopkeeperEntity"/>
<mapping class="Entities.UserIsWorkerEntity"/>
<mapping class="Entities.VariantEntity"/>
<mapping class="Entities.VendorEntity"/>
<mapping class="Entities.WifiAdapterEntity"/>
<mapping class="Entities.WorkerHasRegionsEntity"/>
<mapping class="Entities.WorkerHasRolesEntity"/>
<mapping class="Entities.WorkerHasSectionsEntity"/>
<!-- <property name="connection.username"/> -->
<!-- <property name="connection.password"/> -->
<!-- DB schema will be updated if needed -->
<!-- <property name="hibernate.hbm2ddl.auto">update</property> -->
</session-factory>
</hibernate-configuration>
提前感谢！
共有1个答案
章晗日
该错误抱怨对象实体实体类中信息字段的对象字段类型。更改为适当的类型将解决问题。
另外，看看类似的问题。org.hibernate.MappingException：属性映射在 ENUM 实体中具有错误的列数
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