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![miia](https://secure.gravatar.com/avatar/10f7446f058970be54bcbc3ccbc3a6ad?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
miia
13,198 PointsUnable to create requested service, Unable to load class
I got this error:
kesäk. 04, 2019 8:29:26 AP. org.hibernate.Version logVersion
INFO: HHH000412: Hibernate Core {6.0.0.Alpha2}
kesäk. 04, 2019 8:29:26 AP. org.hibernate.cfg.Environment <clinit>
INFO: HHH000206: hibernate.properties not found
kesäk. 04, 2019 8:29:27 AP. org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
kesäk. 04, 2019 8:29:27 AP. org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl configure
WARN: HHH10001002: Using Hibernate built-in connection pool (not for production use!)
Exception in thread "main" java.lang.ExceptionInInitializerError
Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:275)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
at org.hibernate.boot.model.relational.Database.<init>(Database.java:41)
at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.getDatabase(InFlightMetadataCollectorImpl.java:216)
at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:187)
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:123)
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.build(MetadataBuildingProcess.java:88)
at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:401)
at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:79)
at org.hibernate.boot.MetadataSources.buildMetadata(MetadataSources.java:190)
at contactmgr.Application.buildSessionFactory(Application.java:33)
at contactmgr.Application.<clinit>(Application.java:19)
Caused by: org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [org.h2.Driver]
at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:136)
at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.loadDriverIfPossible(DriverManagerConnectionProviderImpl.java:149)
at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.buildCreator(DriverManagerConnectionProviderImpl.java:105)
at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.buildPool(DriverManagerConnectionProviderImpl.java:89)
at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:73)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:100)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:246)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.buildJdbcConnectionAccess(JdbcEnvironmentInitiator.java:178)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:102)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:94)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263)
... 12 more
Caused by: java.lang.ClassNotFoundException: Could not load requested class : org.h2.Driver
at org.hibernate.boot.registry.classloading.internal.AggregatedClassLoader.findClass(AggregatedClassLoader.java:210)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:588)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:415)
at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:133)
... 24 more
Here is my hibernate.cfg.xml file:
<?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>
<!-- Database connection setting -->
<property name="connection.driver_class">org.h2.Driver</property>
<property name="connection.url">jdbc:h2:./data/contactmgr</property>
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.H2Dialect"</property>
<!-- Create the database schema on startup -->
<property name="hbm2ddl.auto">create</property>
<!-- Show the queries prepared by Hibernate -->
<property name="show_sql">true</property>
<!-- Names the annotated entity classes -->
<mapping class="contactmgr.model.Contact" />
</session-factory>
</hibernate-configuration>
And here is my Application.java:
package contactmgr;
import contactmgr.model.Contact;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.service.ServiceRegistry;
public class Application {
// Hold a reusable reference to a SessionFactory (since we need only one)
private static final SessionFactory sessionFactory = buildSessionFactory();
private static SessionFactory buildSessionFactory() {
// Create a StandardServiceRegistry
final ServiceRegistry registry = new StandardServiceRegistryBuilder().configure().build();
return new MetadataSources(registry).buildMetadata().buildSessionFactory();
}
public static void main(String[] args) {
Contact contact = new Contact.ContactBuilder("x", "x")
.withEmail("x@x.x")
.withPhone(1234567L)
.build();
// Open a session
Session session = sessionFactory.openSession();
// Begin a transaction
session.beginTransaction();
// Use the session to save the contact
session.save(contact);
// Commit the transaction
session.getTransaction().commit();
// Close the session
session.close();
}
}
And Contact.java:
package contactmgr.model;
import javax.persistence.*;
@Entity
public class Contact {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;
@Column
private String firstName;
@Column
private String lastName;
@Column
private String email;
@Column
private Long phone;
// Default constructor for JPA
public Contact() {}
public Contact(ContactBuilder builder) {
this.firstName = builder.firstName;
this.lastName = builder.lastName;
this.email = builder.email;
this.phone = builder.phone;
}
@Override
public String toString() {
return "Contact{" +
"id=" + id +
", firstName='" + firstName + '\'' +
", lastName='" + lastName + '\'' +
", email='" + email + '\'' +
", phone=" + phone +
'}';
}
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;
}
public Long getPhone() {
return phone;
}
public void setPhone(Long phone) {
this.phone = phone;
}
public static class ContactBuilder {
private String firstName;
private String lastName;
private String email;
private Long phone;
public ContactBuilder(String firstName, String lastName) {
this.firstName = firstName;
this.lastName = lastName;
}
public ContactBuilder withEmail(String email) {
this.email = email;
return this;
}
public ContactBuilder withPhone(Long phone) {
this.phone = phone;
return this;
}
public Contact build(){
return new Contact(this);
}
}
}
And dependencies file:
plugins {
id 'java'
}
version '1.0-SNAPSHOT'
sourceCompatibility = 1.8
repositories {
mavenCentral()
}
dependencies {
compile group: 'org.hibernate.orm', name: 'hibernate-core', version: '6.0.0.Alpha2'
testCompile group: 'com.h2database', name: 'h2', version: '1.4.199'
compile group: 'javax.transaction', name: 'jta', version: '1.1'
compile group: 'javax.xml.bind', name: 'jaxb-api', version: '2.4.0-b180830.0359'
compile group: 'com.sun.xml.bind', name: 'jaxb-impl', version: '2.4.0-b180830.0438'
compile group: 'com.sun.xml.bind', name: 'jaxb-core', version: '2.3.0.1'
compile group: 'javax.activation', name: 'activation', version: '1.1.1'
compile group: 'org.olap4j', name: 'olap4j', version: '1.2.0'
}
![Cameron Stewart](https://uploads.teamtreehouse.com/production/profile-photos/1173202/micro_Cameron_Headshot.jpg)
Cameron Stewart
18,048 PointsMiia, did you find a solution?
1 Answer
![Pablo Wedemann Colchiesqui](https://secure.gravatar.com/avatar/262327090c687acf16875e3d883282ca?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Pablo Wedemann Colchiesqui
9,187 Pointsfound the error, change "testCompile" in gradle to "compile". Worked for me.
![Alexander Zola](https://uploads.teamtreehouse.com/production/profile-photos/7946352/micro_IMAG0482.jpg)
Alexander Zola
9,027 Pointsor change H2 testimplementation to implementation in build gradle
Pablo Wedemann Colchiesqui
9,187 PointsPablo Wedemann Colchiesqui
9,187 PointsI'm having the exact same problem, did you find a solution?