I created two tables "instructor" and "instructor_detail" in MySQL. Then I Joined them using @OneToOne Annotation.
I am getting the Below Error-:
Aug 24, 2022 5:53:06 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {5.2.11.Final}
Aug 24, 2022 5:53:07 PM org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
Aug 24, 2022 5:53:07 PM com.sun.xml.bind.v2.runtime.reflect.opt.Injector <clinit>
SEVERE: null
java.security.PrivilegedActionException: java.lang.NoSuchMethodException: sun.misc.Unsafe.defineClass(java.lang.String,[B,int,int,java.lang.ClassLoader,java.security.ProtectionDomain)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:573)
at com.sun.xml.bind.v2.runtime.reflect.opt.Injector.<clinit>(Injector.java:197)
at com.sun.xml.bind.v2.runtime.reflect.opt.AccessorInjector.prepare(AccessorInjector.java:81)
at com.sun.xml.bind.v2.runtime.reflect.opt.OptimizedAccessorFactory.get(OptimizedAccessorFactory.java:179)
at com.sun.xml.bind.v2.runtime.reflect.Accessor$FieldReflection.optimize(Accessor.java:285)
at com.sun.xml.bind.v2.runtime.property.SingleElementNodeProperty.<init>(SingleElementNodeProperty.java:94)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480)
at com.sun.xml.bind.v2.runtime.property.PropertyFactory.create(PropertyFactory.java:128)
at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:181)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:514)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:331)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:139)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(JAXBContextImpl.java:1156)
at com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:165)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:297)
at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:286)
at javax.xml.bind.ContextFinder.find(ContextFinder.java:409)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:721)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:662)
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:122)
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:65)
at org.hibernate.boot.cfgxml.internal.ConfigLoader.loadConfigXmlResource(ConfigLoader.java:57)
at org.hibernate.boot.registry.StandardServiceRegistryBuilder.configure(StandardServiceRegistryBuilder.java:163)
at org.hibernate.cfg.Configuration.configure(Configuration.java:258)
at com.mandeep.hibernate.demo.CreateDemo.main(CreateDemo.java:15)
Caused by: java.lang.NoSuchMethodException: sun.misc.Unsafe.defineClass(java.lang.String,[B,int,int,java.lang.ClassLoader,java.security.ProtectionDomain)
at java.base/java.lang.Class.getMethod(Class.java:2227)
at com.sun.xml.bind.v2.runtime.reflect.opt.Injector$3.run(Injector.java:201)
at com.sun.xml.bind.v2.runtime.reflect.opt.Injector$3.run(Injector.java:197)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:569)
... 32 more
Exception in thread "main" java.lang.NullPointerException: Cannot invoke "java.lang.reflect.Method.invoke(Object, Object[])" because "com.sun.xml.bind.v2.runtime.reflect.opt.Injector.defineClass" is null
at com.sun.xml.bind.v2.runtime.reflect.opt.Injector.inject(Injector.java:311)
at com.sun.xml.bind.v2.runtime.reflect.opt.Injector.inject(Injector.java:97)
at com.sun.xml.bind.v2.runtime.reflect.opt.AccessorInjector.prepare(AccessorInjector.java:87)
at com.sun.xml.bind.v2.runtime.reflect.opt.OptimizedAccessorFactory.get(OptimizedAccessorFactory.java:179)
at com.sun.xml.bind.v2.runtime.reflect.Accessor$FieldReflection.optimize(Accessor.java:285)
at com.sun.xml.bind.v2.runtime.property.SingleElementNodeProperty.<init>(SingleElementNodeProperty.java:94)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480)
at com.sun.xml.bind.v2.runtime.property.PropertyFactory.create(PropertyFactory.java:128)
at com.sun.xml.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:181)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:514)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:331)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:139)
at com.sun.xml.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(JAXBContextImpl.java:1156)
at com.sun.xml.bind.v2.ContextFactory.createContext(ContextFactory.java:165)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:297)
at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:286)
at javax.xml.bind.ContextFinder.find(ContextFinder.java:409)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:721)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:662)
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:122)
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:65)
at org.hibernate.boot.cfgxml.internal.ConfigLoader.loadConfigXmlResource(ConfigLoader.java:57)
at org.hibernate.boot.registry.StandardServiceRegistryBuilder.configure(StandardServiceRegistryBuilder.java:163)
at org.hibernate.cfg.Configuration.configure(Configuration.java:258)
at com.mandeep.hibernate.demo.CreateDemo.main(CreateDemo.java:15)
The Main Class "CreateDemo" is As below-: The Error is in SessionFactory(hibernate.cfg.xml)||I dont know how to solve it though
package com.mandeep.hibernate.demo;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import com.mandeep.hibernate.demo.entity.Instructor;
import com.mandeep.hibernate.demo.entity.InstructorDetail;
public class CreateDemo {
public static void main(String[] args) {
SessionFactory factory = new Configuration()
.configure("hibernate.cfg.xml")
.addAnnotatedClass(Instructor.class)
.addAnnotatedClass(InstructorDetail.class)
.buildSessionFactory();
Session session = factory.getCurrentSession();
try {
//create objects
Instructor tempInstructor =
new Instructor("Meenakshi","Sharma","[email protected]");
InstructorDetail tempInstructorDetail =
new InstructorDetail("www.youtube.com","Art");
//associate the objects
tempInstructor.setInstructorDetail(tempInstructorDetail);
//start Transaction
session.beginTransaction();
//save the Instructor
System.out.println("Saving Instructor " tempInstructor);
session.save(tempInstructor);
//commit transaction
session.getTransaction().commit();
}
finally {
factory.close();
}
}
}
The "hibernate.cfg.xml" file is as below-:
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- JDBC Database connection settings -->
<property name="connection.driver_class">com.mysql.cj.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost:3306/hb-01-one-to-one-uni?useSSL=false&serverTimezone=UTC</property>
<property name="connection.username">hbstudent</property>
<property name="connection.password">hbstudent</property>
<!-- JDBC connection pool settings ... using built-in test pool -->
<property name="connection.pool_size">1</property>
<!-- Select our SQL dialect -->
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<!-- Echo the SQL to stdout -->
<property name="show_sql">true</property>
<!-- Set the current session context -->
<property name="current_session_context_class">thread</property>
</session-factory>
</hibernate-configuration>
The "Instructor Class is as below-:"
package com.mandeep.hibernate.demo.entity;
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.JoinColumn;
import javax.persistence.OneToOne;
import javax.persistence.Table;
@Entity
@Table(name="instructor")
public class Instructor {
@OneToOne(cascade=CascadeType.ALL)
@JoinColumn(name="instructor_detail_id")
private InstructorDetail instructorDetail;
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
@Column(name="id")
private int id;
@Column(name="first_name")
private String firstName;
@Column(name="last_name")
private String lastName;
@Column(name="email")
private String email;
public Instructor() {
}
public Instructor(String firstName, String lastName, String email) {
this.firstName = firstName;
this.lastName = lastName;
this.email = email;
}
public InstructorDetail getInstructorDetail() {
return instructorDetail;
}
public void setInstructorDetail(InstructorDetail instructorDetail) {
this.instructorDetail = instructorDetail;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
@Override
public String toString() {
return "Instructor [instructorDetail=" instructorDetail ", id=" id ", firstName=" firstName
", lastName=" lastName ", email=" email "]";
}
}
The "InsructorDetail" Class is as below-:
package com.mandeep.hibernate.demo.entity;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name="instructor_detail")
public class InstructorDetail {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name="id")
private int id;
@Column(name="youtube_channel")
private String youtubeChannel;
@Column(name="hobby")
private String hobby;
public InstructorDetail() {
}
public InstructorDetail(String youtubeChannel, String hobby) {
this.youtubeChannel = youtubeChannel;
this.hobby = hobby;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getYoutubeChannel() {
return youtubeChannel;
}
public void setYoutubeChannel(String youtubeChannel) {
this.youtubeChannel = youtubeChannel;
}
public String getHobby() {
return hobby;
}
public void setHobby(String hobby) {
this.hobby = hobby;
}
@Override
public String toString() {
return "InstructorDetail [id=" id ", youtubeChannel=" youtubeChannel ", hobby=" hobby "]";
}
}
CodePudding user response：
based on that error
java.security.PrivilegedActionException: java.lang.NoSuchMethodException: sun.misc.Unsafe.defineClass(java.lang.String,[B,int,int,java.lang.ClassLoader,java.security.ProtectionDomain)
I would suggest checking if there is a missing dependency in the build.gradle / pom.xml (whether you use Gradle or Maven).
CodePudding user response：
The error is that your JAXB implementation uses a method from the JDK that was removed, so the Java version with which you are trying to run your application is not supported by the jaxb implementation you are depending on. Try updating, e.g. use:
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.2.11</version>
<scope>runtime</scope>
</dependency>