Hibernate Composite Key

Add following dependency in pom.xml file.

<dependencies>

<dependency>
	<groupId>org.hibernate</groupId>
	<artifactId>hibernate-core</artifactId>
	<version>5.4.28.Final</version>
</dependency>

<dependency>
	<groupId>mysql</groupId>
	<artifactId>mysql-connector-java</artifactId>
	<version>5.1.6</version>
</dependency>

</dependencies>
  

hibernate.cfg.xml

   <?xml version = "1.0" encoding = "utf-8"?>
<!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>

<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/stds</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password">root</property>

<property name="hbm2ddl.auto">update</property>
<property name="show_sql">true</property>
		
	
</session-factory>
</hibernate-configuration>
   

Student.java

package com.deepsingh44.model;

import javax.persistence.EmbeddedId;
import javax.persistence.Entity;

@Entity
public class Student {
	@EmbeddedId
	private StudentKey studentKey;
	private String name;
	private String address;

	public StudentKey getStudentKey() {
		return studentKey;
	}

	public void setStudentKey(StudentKey studentKey) {
		this.studentKey = studentKey;
	}

	public String getName() {
		return name;
	}

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

	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

}
  

StudentKey.java

package com.deepsingh44.model;

import java.io.Serializable;

import javax.persistence.Embeddable;

@Embeddable
public class StudentKey implements Serializable {
	private String mobile;
	private String email;

	public String getMobile() {
		return mobile;
	}

	public void setMobile(String mobile) {
		this.mobile = mobile;
	}

	public String getEmail() {
		return email;
	}

	public void setEmail(String email) {
		this.email = email;
	}

}
  

Test.java

package com.deepsingh44.model;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.boot.Metadata;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.registry.StandardServiceRegistry;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;

public class Test {
	public static void main(String[] args) {
	// Load your configuration file
	StandardServiceRegistry ssr = new StandardServiceRegistryBuilder().
			configure("hibernate.cfg.xml").
			build();
	Metadata meta = new MetadataSources(ssr).
			addAnnotatedClass(Student.class).
			getMetadataBuilder().
			build();

	// Get sessionFactory object
	SessionFactory factory = meta.
			getSessionFactoryBuilder().
			build();

	// Get session object
	Session session = factory.openSession();
		
	Student s=new Student();
	s.setAddress("abc");
	s.setName("A");
		
	StudentKey sk=new StudentKey();
	sk.setEmail("98XXXXXXXX");
	sk.setMobile("d@gmail.com");
		
	s.setStudentKey(sk);
		
	session.save(s);
	session.beginTransaction().commit();
	System.out.println("success");
				
	}
}