在实现持久性时，将EJB应用程序部署到JBoss时出现问题
我试图实现EJB持久性，但在将应用程序部署到JBoss时遇到了问题。在我的应用程序中有会话bean TeamMgr，它如下所示：在实现持久性时，将EJB应用程序部署到JBoss时出现问题,jboss,persistence,ejb-3.0,Jboss,Persistence,Ejb 3.0,我试图实现EJB持久性，但在将应用程序部署到JBoss时遇到了问题。在我的应用程序中有会话bean TeamMgr，它如下所示： package ejb; import javax.ejb.Local; import javax.ejb.Remote; import javax.ejb.Stateless; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import d
package ejb;
import javax.ejb.Local;
import javax.ejb.Remote;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import domain.TeamBean;
@Stateless
@Local(ITeamMgrLocal.class)
@Remote(ITeamMgrRemote.class)
public class TeamMgr implements ITeamMgrLocal, ITeamMgrRemote {
@PersistenceContext(unitName="team_workouts") private EntityManager manager;
public TeamMgr() {
// TODO Auto-generated constructor stub
}
@Override
public void addMember(int tid, int ub) {
System.out.println("In TeamMgr.addMember()...");
System.out.println("New Member ID: " + ub);
System.out.println("Leaving TeamMgr.addMember()...");
}
@Override
public void createTeam(int m1, int m2, int m3, int m4, int m5, String tn) {
System.out.println("In TeamMgr.createTeam()...");
System.out.println("Persisting team name: " + tn);
TeamBean tb = new TeamBean(tn, m1, m2, m3, m4, m5);
manager.persist(tb);
System.out.println("Leaving TeamMgr.createTeam()...");
}
}
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" 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_1_0.xsd">
<persistence-unit name="team_workouts">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>java:MySqlDS</jta-data-source>
</persistence-unit>
</persistence>
package ejb;
import javax.ejb.Local;
import javax.ejb.Remote;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import domain.TeamBean;
@Stateless
@Local(ITeamMgrLocal.class)
@Remote(ITeamMgrRemote.class)
public class TeamMgr implements ITeamMgrLocal, ITeamMgrRemote {
@PersistenceContext(unitName="team_workouts") private EntityManager manager;
public TeamMgr() {
// TODO Auto-generated constructor stub
}
@Override
public void addMember(int tid, int ub) {
System.out.println("In TeamMgr.addMember()...");
System.out.println("New Member ID: " + ub);
System.out.println("Leaving TeamMgr.addMember()...");
}
@Override
public void createTeam(int m1, int m2, int m3, int m4, int m5, String tn) {
System.out.println("In TeamMgr.createTeam()...");
System.out.println("Persisting team name: " + tn);
TeamBean tb = new TeamBean(tn, m1, m2, m3, m4, m5);
manager.persist(tb);
System.out.println("Leaving TeamMgr.createTeam()...");
}
}
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" 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_1_0.xsd">
<persistence-unit name="team_workouts">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>java:MySqlDS</jta-data-source>
</persistence-unit>
</persistence>
org.hibernate.ejb.HibernatePersistence
java:MySqlDS
<?xml version="1.0" encoding="UTF-8"?>
<datasources>
<local-tx-datasource>
<jndi-name>MySqlDS</jndi-name>
<connection-url>jdbc:mysql://mysql-hostname:3306/team_workouts</connection-url>
<driver-class>com.mysql.jdbc.Driver</driver-class>
<user-name>root</user-name>
<password>admin</password>
<exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name>
<metadata>
<type-mapping>mySQL</type-mapping>
</metadata>
</local-tx-datasource>
</datasources>
MySqlDS
jdbc：mysql://mysql-hostname:3306/team_workouts
com.mysql.jdbc.Driver
根
管理
org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter
mySQL
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
Caused by: java.net.UnknownHostException: mysql-hostname