In oficial documentation of spring this write next:
@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
vendorAdapter.setGenerateDdl(true);
LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
factory.setJpaVendorAdapter(vendorAdapter);
factory.setPackagesToScan("com.acme.domain");
factory.setDataSource(dataSource());
return factory;
}
@Bean
public PlatformTransactionManager transactionManager() {
JpaTransactionManager txManager = new JpaTransactionManager();
txManager.setEntityManagerFactory(entityManagerFactory());
return txManager;
}
and
It’s important to create LocalContainerEntityManagerFactoryBean and not EntityManagerFactory directly since the former also participates in exception translation mechanisms besides simply creating EntityManagerFactory.
But when I tried use it I get error:
setEntityManagerFactory
(javax.persistence.EntityManagerFactory)
in JpaTransactionManager cannot be applied
to
(org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean)
it is my imports:
import org.apache.tomcat.jdbc.pool.DataSourceFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.DependsOn;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import javax.sql.DataSource;
Your configuration looks correct. Only change your transactionManager definition as below:
@Bean
public PlatformTransactionManager transactionManager() {
JpaTransactionManager txManager = new JpaTransactionManager();
txManager.setEntityManagerFactory(entityManagerFactory().getObject());
return txManager;
}
The getObject()
method return singleton EntityManagerFactory
.
@Bean
public PlatformTransactionManager transactionManager(EntityManagerFactory
entityManagerFactory) {
return new JpaTransactionManager(entityManagerFactory);
}
Construct your JpaTransactionManager with an EntityManagerFactory coming in as parameter from your @Bean. Spring will automatically create one from the LocalContainerEntityManagerFactoryBean when needed. This avoids ever calling the getObject()-method.
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