Cfrgtkky

I have been trying to figure it out for a few days but today I gave up. I got the HTTP Status Error when I try to create Entity Manager Factory.

Full Stack Trace:

Type Exception Report



Message Error processing webservice request



Description The server encountered an unexpected condition that prevented it from fulfilling the request.



Exception



javax.servlet.ServletException: Error processing webservice request

    org.apache.tomee.webservices.CXFJAXRSFilter.doFilter(CXFJAXRSFilter.java:98)

    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)



Root Cause



<openjpa-3.0.0-r422266:1833209 fatal user error> org.apache.openjpa.persistence.ArgumentException: The persistence provider is attempting to use properties in the persistence.xml file to resolve the data source. A Java Database Connectivity (JDBC) driver or data source class name must be specified in the openjpa.ConnectionDriverName or javax.persistence.jdbc.driver property. The following properties are available in the configuration: "org.apache.openjpa.jdbc.conf.JDBCConfigurationImpl@393fa2d". 

    org.apache.openjpa.jdbc.schema.DataSourceFactory.newDataSource(DataSourceFactory.java:71)

    org.apache.openjpa.jdbc.conf.JDBCConfigurationImpl.createConnectionFactory(JDBCConfigurationImpl.java:850)

    org.apache.openjpa.jdbc.conf.JDBCConfigurationImpl.getDBDictionaryInstance(JDBCConfigurationImpl.java:603)

    org.apache.openjpa.jdbc.meta.MappingRepository.endConfiguration(MappingRepository.java:1520)

    org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:533)

    org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:458)

    org.apache.openjpa.lib.conf.PluginValue.instantiate(PluginValue.java:122)

    org.apache.openjpa.conf.MetaDataRepositoryValue.instantiate(MetaDataRepositoryValue.java:68)

    org.apache.openjpa.lib.conf.ObjectValue.instantiate(ObjectValue.java:83)

    org.apache.openjpa.conf.OpenJPAConfigurationImpl.newMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:1035)

    org.apache.openjpa.conf.OpenJPAConfigurationImpl.getMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:1026)

    org.apache.openjpa.kernel.AbstractBrokerFactory.makeReadOnly(AbstractBrokerFactory.java:643)

    org.apache.openjpa.kernel.AbstractBrokerFactory.newBroker(AbstractBrokerFactory.java:203)

    org.apache.openjpa.kernel.DelegatingBrokerFactory.newBroker(DelegatingBrokerFactory.java:154)

    org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:246)

    org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:162)

    org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:152)

    org.apache.openjpa.persistence.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:58)

    dao.Dao.getUser(Dao.java:15)

    tk.spartan.controller.GetUser.list(GetUser.java:35)

    sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

    java.lang.reflect.Method.invoke(Method.java:498)

    org.apache.openejb.server.cxf.rs.PojoInvoker.performInvocation(PojoInvoker.java:43)

    org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:96)

    org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:193)

    org.apache.cxf.jaxrs.JAXRSInvoker.invoke(JAXRSInvoker.java:103)

    org.apache.openejb.server.cxf.rs.AutoJAXRSInvoker.invoke(AutoJAXRSInvoker.java:68)

    org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:59)

    org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:96)

    org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)

    org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)

    org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:267)

    org.apache.openejb.server.cxf.rs.CxfRsHttpListener.doInvoke(CxfRsHttpListener.java:253)

    org.apache.tomee.webservices.CXFJAXRSFilter.doFilter(CXFJAXRSFilter.java:94)

    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

So it's a little weird that I get openjpa error when in persistance.xml I've got :

<persistence 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"

             version="2.0">



    <persistence-unit name="baza" transaction-type="RESOURCE_LOCAL">



        <provider>org.hibernate.ejb.HibernatePersistence</provider>

        <class>beans.User</class>





        <exclude-unlisted-classes>true</exclude-unlisted-classes>

        <properties>

            <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>

            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>

            <property name="javax.persistence.jdbc.user" value="bd2a4c789dfa24" />

            <property name="javax.persistence.jdbc.password" value="xxxx" />

            <property name="javax.persistence.jdbc.url"

                                  value="jdbc:mysql://eu-cdbr-west-02.cleardb.net/heroku_48a75ca44077046?reconnect=true" />

            <!-- <property name="hibernate.hbm2ddl.auto" value="update"/>  -->

            <property name="hibernate.show_sql" value="true"/>

            <property name="hibernate.format_sql" value="false"/>



            <property name="hibernate.cache.use_second_level_cache" value="false"/>



            <property name="hibernate.archive.autodetection" value="true"/>



        </properties>



    </persistence-unit>



</persistence>

and my Entity class looks like:

package beans;



import javax.persistence.Column;

import javax.persistence.Entity;

import javax.persistence.Id;

import javax.persistence.Table;



@Entity

@Table(name = "user")



public class User {



    @Column(name = "iduser")

    @Id

    private Integer iduser;



    @Column(name = "user")

    private String user;



    @Column(name = "password")

    private String password;



    @Column(name = "role")

    private String role;



    public User() {

    }



    public User(int iduser, String user, String pass, String role) {

        this.iduser = iduser;

        this.user = user;

        this.password = password;

        this.role = role;

    }



    public User(Integer iduser) {

        this.iduser = iduser;

    }



    public Integer getIduser() {

        return iduser;

    }



    public void setIduser(Integer iduser) {

        this.iduser = iduser;

    }



    public String getUser() {

        return user;

    }



    public void setUser(String user) {

        this.user = user;

    }



    public String getPassword() {

        return password;

    }



    public void setPassword(String password) {

        this.password = password;

    }



    public String getRole() {

        return role;

    }



    public void setRole(String role) {

        this.role = role;

    }



}

So I'm a little bit confused right now. I've been searching for that kind of error but i didn't find a solution for that.

What it could be?

Added:

@Path("user")

public class GetUser 

{

    @GET

    @Produces(MediaType.TEXT_PLAIN)





    public List<User> list ()

            {



    Dao dao = new Dao();

    User user = new User();





    List<User> userListed = dao.getUser(user);





    return userListed;

            }

and structure:

I think you should include mysql driver to your jar dependency(pom.xml).
The error message said: The driver is unknown.