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PO"No Persistence provider for EntityManager named manager1" error with JPA 2.0 and Spring 3.1
 

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  1. PO"No Persistence provider for EntityManager named manager1" error with JPA 2.0 and Spring 3.1
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    <p>I'm working now on a project using Spring 3.1 and JPA 2.0 and i'm getting an log message error telling me : "<strong>No Persistence provider for EntityManager named manager1</strong>".</p> <p>Here's my persistence.xml :</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;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"&gt; &lt;persistence-unit name="DemoSpringCore" transaction-type="RESOURCE_LOCAL"&gt; &lt;provider&gt;org.hibernate.ejb.HibernatePersistence&lt;/provider&gt; &lt;class&gt;app.demo.model.Operation&lt;/class&gt; &lt;properties&gt; &lt;property name="hibernate.connection.url" value="jdbc:mysql://localhost:3309/test"/&gt; &lt;property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/&gt; &lt;property name="hibernate.connection.username" value="root"/&gt; &lt;property name="hibernate.connection.password" value="root"/&gt; &lt;property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/&gt; &lt;property name="hibernate.show_sql" value="true"/&gt; &lt;/properties&gt; &lt;/persistence-unit&gt; </code></pre> <p></p> <p>Here's my managed enity "Operation.java" : package app.demo.model;</p> <pre><code>import java.io.Serializable; 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="operation") public class Operation implements Serializable{ private static final long serialVersionUID = 1L; @Id @GeneratedValue(strategy=GenerationType.AUTO) private int id; @Column(name="a",length=9) private int a; @Column(name="b",length=9) private int b; @Column(name="c",length=10) private int c; public int getA() { return a; } public void setA(int a) { this.a = a; } public int getB() { return b; } public void setB(int b) { this.b = b; } public int getC() { return c; } public void setC(int c) { this.c = c; } public int getId() { return id; } public void setId(int id) { this.id = id; } } </code></pre> <p>Here's my java configuration file "AppConfiguration.java" the alternative of "ApplicationContext.xml" in Spring 3.1 :</p> <pre><code>package app.demo.config; import java.util.Properties; import com.jolbox.bonecp.BoneCPDataSource; import javax.annotation.Resource; import javax.sql.DataSource; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.ImportResource; import org.springframework.context.annotation.PropertySource; import org.springframework.core.env.Environment; import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean; import app.demo.dao.OperationDAO; import app.demo.dao.OperationDAOImpl; import app.demo.service.OperationServiceImpl; import app.demo.service.OperationService; import org.hibernate.ejb.HibernatePersistence; @Configuration @PropertySource("/META-INF/application.properties") public class AppConfiguration { private static final String PROPERTY_NAME_DATABASE_DRIVER = "db.driver"; private static final String PROPERTY_NAME_DATABASE_PASSWORD = "db.password"; private static final String PROPERTY_NAME_DATABASE_URL = "db.url"; private static final String PROPERTY_NAME_DATABASE_USERNAME = "db.username"; private static final String PROPERTY_NAME_HIBERNATE_DIALECT = "hibernate.dialect"; private static final String PROPERTY_NAME_HIBERNATE_FORMAT_SQL = "hibernate.format_sql"; private static final String PROPERTY_NAME_HIBERNATE_SHOW_SQL = "hibernate.show_sql"; private static final String PROPERTY_NAME_ENTITYMANAGER_PACKAGES_TO_SCAN = "entitymanager.packages.to.scan"; // private static final String PROPERTY_NAME_HIBERNATE_NAMING_STRATEGY = // "hibernate.ejb.naming_strategy"; @Resource private Environment environment; @Bean(name = "operationServiceBean") public OperationService operationService() { return new OperationServiceImpl(); } @Bean(name = "operationDAOBean") public OperationDAO operationDAO() { return new OperationDAOImpl(); } @Bean public DataSource dataSource() { BoneCPDataSource dataSource = new BoneCPDataSource(); dataSource.setDriverClass(environment .getRequiredProperty(PROPERTY_NAME_DATABASE_DRIVER)); dataSource.setJdbcUrl(environment .getRequiredProperty(PROPERTY_NAME_DATABASE_URL)); dataSource.setUsername(environment .getRequiredProperty(PROPERTY_NAME_DATABASE_USERNAME)); dataSource.setPassword(environment .getRequiredProperty(PROPERTY_NAME_DATABASE_PASSWORD)); return (DataSource) dataSource; } @Bean public LocalContainerEntityManagerFactoryBean entityManagerFactoryBean() throws ClassNotFoundException { LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean(); entityManagerFactoryBean .setPersistenceProviderClass(HibernatePersistence.class); entityManagerFactoryBean.setDataSource(dataSource()); Properties jpaProterties = new Properties(); jpaProterties.put(PROPERTY_NAME_HIBERNATE_DIALECT, environment .getRequiredProperty(PROPERTY_NAME_HIBERNATE_DIALECT)); jpaProterties.put(PROPERTY_NAME_HIBERNATE_FORMAT_SQL, environment .getRequiredProperty(PROPERTY_NAME_HIBERNATE_FORMAT_SQL)); jpaProterties.put(PROPERTY_NAME_HIBERNATE_SHOW_SQL, environment .getRequiredProperty(PROPERTY_NAME_HIBERNATE_SHOW_SQL)); jpaProterties .put(PROPERTY_NAME_ENTITYMANAGER_PACKAGES_TO_SCAN, environment .getRequiredProperty(PROPERTY_NAME_ENTITYMANAGER_PACKAGES_TO_SCAN)); // jpaProterties.put(PROPERTY_NAME_HIBERNATE_NAMING_STRATEGY, // environment // .getRequiredProperty(PROPERTY_NAME_HIBERNATE_NAMING_STRATEGY)); entityManagerFactoryBean.setJpaProperties(jpaProterties); return entityManagerFactoryBean; } } </code></pre> <p>and finally my "application.properties" where i put datasource connection properties :</p> <pre><code>db.driver=com.mysql.jdbc.Driver db.url=jdbc:mysql://localhost:3309/test db.username=root db.password=root hibernate.dialect=org.hibernate.dialect.MySQLDialect hibernate.format_sql=true hibernate.show_sql=true entitymanager.packages.to.scan=app.demo.model </code></pre> <p>P.S : I used both methods "appliaction.properties" and also "persistence.xml" each one alone and after both of them in the same time in hope that'll work but nothing happenned ! Moreover i added the provider attribute in both "AppConfiguration.java" and "persistence.xml" and i verified the existence of all dependencies jar files !</p> <p>Thanks in advance :)</p>
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    1. COpossible duplicate of [No Persistence provider for EntityManager named ](http://stackoverflow.com/questions/1158159/no-persistence-provider-for-entitymanager-named)
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    2. COThanks dude, that's it :)
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