I'm creating an EJB application with JPA. I created EJBBean that uses the @PersistenceContext with the Entity Manager. I also provided the settings in the Persistence.xml file that has the Hibernate information. I'm trying to use transaction-type=JTA and trying to access the DataSource using the JNDI. I have also provided some information in the server.xml file of the Websphere Liberty
However, I'm getting an error message -
javax.ejb.EJBException: CWNEN0030E: The server was unable to obtain an object instance for the java:comp/env/SolarUniversityJpa reference. The exception message was: java.lang.RuntimeException: CWWJP0050E: Unable to locate persistence provider org.hibernate.ejb.HibernatePersistence.; nested exception is: java.lang.RuntimeException: java.lang.RuntimeException: CWWJP0050E: Unable to locate persistence provider org.hibernate.ejb.HibernatePersistence.
Please refer to the Error Message mentioned after the Server.xml file for more information
Servlet
@WebServlet("/StudentServlet")
public class StudentServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
@EJB
StudentEjbBean studentEjbBean;
public StudentServlet() {
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
studentEjbBean.testJpa();
}
}
EjbBean
@Stateless
@LocalBean
public class StudentEjbBean {
@PersistenceContext(name="SolarUniversityJpa")
EntityManager entityManager;
public StudentEjbBean() {
}
public void testJpa()
{
StudentDao studentDao = new StudentDaoImpl();
studentDao.SaveInformation(entityManager);
}
}
Persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1"
xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
<persistence-unit name="SolarUniversityJpa"
transaction-type="JTA">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>java:global/env/jdbc/MySql</jta-data-source>
<class>com.student.entity.StudentEntity</class>
<properties>
<property name="connection.driver_class" value="com.mysql.jdbc.Driver" />
<property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/SolarUniversity" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
<property name="hibernate.hbm2ddl.auto" value="create" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="true" />
</properties>
</persistence-unit>
</persistence>
Server.xml
<server description="new server">
<!-- Enable features -->
<featureManager>
<feature>webProfile-7.0</feature>
<feature>localConnector-1.0</feature>
</featureManager>
<!-- To access this server from a remote client add a host attribute to
the following element, e.g. host="*" -->
<httpEndpoint httpPort="9080" httpsPort="9443"
id="defaultHttpEndpoint" />
<!-- Automatically expand WAR files and EAR files -->
<applicationManager autoExpand="true" />
<applicationMonitor updateTrigger="mbean" />
<jdbcDriver id="mySqlEmbedded" libraryRef="mySqlLib" />
<library id="mySqlLib" filesetRef="mySqlFileSet" />
<fileset id="mySqlFileSet" dir="E:/Backups"
includes="mysql-connector-java-5.1.34.jar" />
<dataSource id="jdbc/samplejpadatasource" jndiName="jdbc/MySql"
jdbcDriverRef="mySqlEmbedded">
<properties user="root" password="root"
URL="jdbc:mysql://localhost:3306/SolarUniversity">
</properties>
</dataSource>
<enterpriseApplication id="SolarUniversityEAR"
location="SolarUniversityEAR.ear" name="SolarUniversityEAR">
<!-- <classloader commonLibraryRef="MySQLLib" /> -->
</enterpriseApplication>
</server>
Exception Information
[ERROR ] CNTR0019E: EJB threw an unexpected (non-declared) exception during invocation of method "testMessage". Exception data: javax.ejb.EJBException: CWNEN0030E: The server was unable to obtain an object instance for the java:comp/env/SolarUniversityJpa reference. The exception message was: java.lang.RuntimeException: CWWJP0050E: Unable to locate persistence provider org.hibernate.ejb.HibernatePersistence.; nested exception is: java.lang.RuntimeException: java.lang.RuntimeException: CWWJP0050E: Unable to locate persistence provider org.hibernate.ejb.HibernatePersistence.
at com.ibm.ejs.container.util.ExceptionUtil.EJBException(ExceptionUtil.java:461)
at [internal classes]
at com.ejb.stateless.student.EJSLocalNSLStudentEjbBean_58c656c8.testMessage(EJSLocalNSLStudentEjbBean_58c656c8.java)
at com.servlet.student.StudentServlet.doPost(StudentServlet.java:56)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1290)
at [internal classes]
Caused by (repeated) ... : java.lang.RuntimeException: java.lang.RuntimeException: CWWJP0050E: Unable to locate persistence provider org.hibernate.ejb.HibernatePersistence.
at com.ibm.ws.jpa.management.JPAPUnitInfo.getEntityManagerFactory(JPAPUnitInfo.java:960)
... 7 more
Caused by: java.lang.ClassNotFoundException: org.hibernate.ejb.HibernatePersistence
at com.ibm.ws.classloading.internal.AppClassLoader.findClassCommonLibraryClassLoaders(AppClassLoader.java:499)
... 1 more
[ERROR ] SRVE0777E: Exception thrown by application class 'com.ibm.ejs.container.util.ExceptionUtil.EJBException:461'
javax.ejb.EJBException: CWNEN0030E: The server was unable to obtain an object instance for the java:comp/env/SolarUniversityJpa reference. The exception message was: java.lang.RuntimeException: CWWJP0050E: Unable to locate persistence provider org.hibernate.ejb.HibernatePersistence.; nested exception is: java.lang.RuntimeException: java.lang.RuntimeException: CWWJP0050E: Unable to locate persistence provider org.hibernate.ejb.HibernatePersistence.
at com.ibm.ejs.container.util.ExceptionUtil.EJBException(ExceptionUtil.java:461)
at [internal classes]
at com.ejb.stateless.student.EJSLocalNSLStudentEjbBean_58c656c8.testMessage(EJSLocalNSLStudentEjbBean_58c656c8.java)
at com.servlet.student.StudentServlet.doPost(StudentServlet.java:56)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1290)
at [internal classes]
Caused by (repeated) ... : java.lang.RuntimeException: java.lang.RuntimeException: CWWJP0050E: Unable to locate persistence provider org.hibernate.ejb.HibernatePersistence.
at com.ibm.ws.jpa.management.JPAPUnitInfo.getEntityManagerFactory(JPAPUnitInfo.java:960)
... 7 more
Caused by: java.lang.ClassNotFoundException: org.hibernate.ejb.HibernatePersistence
at com.ibm.ws.classloading.internal.AppClassLoader.findClassCommonLibraryClassLoaders(AppClassLoader.java:499)
... 1 more
[ERROR ] SRVE0315E: An exception occurred: java.lang.Throwable: javax.ejb.EJBException: CWNEN0030E: The server was unable to obtain an object instance for the java:comp/env/SolarUniversityJpa reference. The exception message was: java.lang.RuntimeException: CWWJP0050E: Unable to locate persistence provider org.hibernate.ejb.HibernatePersistence.; nested exception is: java.lang.RuntimeException: java.lang.RuntimeException: CWWJP0050E: Unable to locate persistence provider org.hibernate.ejb.HibernatePersistence.
at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:5000)
at [internal classes]
Caused by: javax.ejb.EJBException: CWNEN0030E: The server was unable to obtain an object instance for the java:comp/env/SolarUniversityJpa reference. The exception message was: java.lang.RuntimeException: CWWJP0050E: Unable to locate persistence provider org.hibernate.ejb.HibernatePersistence.; nested exception is: java.lang.RuntimeException: java.lang.RuntimeException: CWWJP0050E: Unable to locate persistence provider org.hibernate.ejb.HibernatePersistence.
at com.ibm.ejs.container.util.ExceptionUtil.EJBException(ExceptionUtil.java:461)
at [internal classes]
at com.ejb.stateless.student.EJSLocalNSLStudentEjbBean_58c656c8.testMessage(EJSLocalNSLStudentEjbBean_58c656c8.java)
at com.servlet.student.StudentServlet.doPost(StudentServlet.java:56)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1290)
... 1 more
Caused by (repeated) ... : java.lang.RuntimeException: java.lang.RuntimeException: CWWJP0050E: Unable to locate persistence provider org.hibernate.ejb.HibernatePersistence.
at com.ibm.ws.jpa.management.JPAPUnitInfo.getEntityManagerFactory(JPAPUnitInfo.java:960)
... 7 more
Caused by: java.lang.ClassNotFoundException: org.hibernate.ejb.HibernatePersistence
at com.ibm.ws.classloading.internal.AppClassLoader.findClassCommonLibraryClassLoaders(AppClassLoader.java:499)
... 1 more
The exception message is indicating that Hibernate classes cannot be found. This is expected since Liberty does not provide Hibernate classes in the jpa-2.0 (OpenJPA) or jpa-2.1 (eclipselink) features.
If you want to use Hibernate with Liberty, you will need to download the Hibernate jars yourself and either include them in your application or configure a shared library.
Assuming you already have the Hibernate jars handy at the location C:/hibernate, you could add the following to your server.xml:
<library id="HibernateLib">
<fileset dir="C:/hibernate" includes="*.jar"/>
</library>
And then provide the shared library to your application like this:
<enterpriseApplication id="SolarUniversityEAR" location="SolarUniversityEAR.ear" name="SolarUniversityEAR">
<classloader commonLibraryRef="HibernateLib"/>
</enterpriseApplication>
Also, here is a useful sample to work off of:
Liberty JPA Hibernate Sample