I learning JPA. Trying to build the project, but catch the error:
Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/HomeProject-context.xml]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build EntityManagerFactory
Who have experience in this, please help my. My context:
<context:property-placeholder location="file:${hp.ini}"/>
<!-- Включаем опцию использования конфигурационных аннотаций (@Annotation-based configuration)-->
<context:annotation-config/>
<tx:annotation-driven/>
<jpa:repositories base-package="com.kuzmenko.homeproject.repo"/>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"/>
<property name="jpaDialect">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect"/>
</property>
</bean>
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"
p:driverClassName="${jdbc.driverClass}"
p:url="${jdbc.url}"
p:username="${jdbc.user}"
p:password="${jdbc.password}"/>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="persistenceProviderClass" value="org.hibernate.ejb.HibernatePersistence"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"/>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">${jdbc.dialect}</prop>
<prop key="hibernate.show_sql">false</prop>
</props>
</property>
<property name="packagesToScan">
<list>
<value>com.kuzmenko.homeproject.domain</value>
</list>
</property>
</bean>
I think that I should to create persistence.xml. How to generate it? What dependencies I should to add?
You are missing the persistenceUnitName
as clearely reported in the error log. So it should be declared as a property inside your entityMangerFactory
bean declaration as below:
<property name="persistenceUnitName" value="yourpersistenceunit" />
Then you should add the persistence.xml file under classpath:META-INF/ with below content:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
<persistence-unit name="yourpersistenceunit" transaction-type="RESOURCE_LOCAL">
<class>yourpackage.yourclass</class>
...
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<properties>
<property name="hibernate.dialect" value=${dialect.for.your.rdbms} />
</properties>
</persistence-unit>
</persistence>
You should note that this declaration may need some adjustements to fit in with your exact configuration.
BR.
The problem is solved! :) The problem was in pom.xml. PersistenceUnit is not required. Enough following configuration entityManagerFactory:
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="persistenceProviderClass" value="org.hibernate.ejb.HibernatePersistence"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"/>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">${jdbc.dialect}</prop>
<prop key="hibernate.show_sql">false</prop>
</props>
</property>
<property name="packagesToScan">
<list>
<value>com.kuzmenko.homeproject.domain</value>
</list>
</property>
</bean>
End dependencies, that need:
<!-- Spring dependencies for Hibernate -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>1.4.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- ######### End ######## -->
<!-- Hibernate dependencies -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.2.5.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>4.2.5.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.1-api</artifactId>
<version>1.0.0.Final</version>
</dependency>
<!-- ######### End ######## -->
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