首先让我说我知道类似的问题已得到解答，但它们都没有完全符合我的问题。
我刚开始使用带有netbeans的JEE，带有glassfish服务器和postgresql数据库。我正在使用eclipseLink和jta交易。我有一些直接从我的数据库表中使用netbeans生成的实体类。当我尝试将条目添加到我的数据库表时，问题就出现了。我有一个名为UtilisateurFacade的ejb，应该添加一个新的＆＃34; Utilisateur＆＃34;到我的数据库，这里是：
@Stateless
public class UtilisateurFacade extends AbstractFacade<Utilisateur> {
@PersistenceContext(unitName = "LaCuillere-ejbPU")
private EntityManagerFactory emf;
@Override
protected EntityManager getEntityManager() {
return emf.createEntityManager();
}
public UtilisateurFacade() {
super(Utilisateur.class);
emf=Persistence.createEntityManagerFactory("LaCuillere-ejbPU");
}
@Transactional
public Integer addUser(Utilisateur u) throws NotSupportedException, SystemException, RollbackException, HeuristicMixedException, HeuristicRollbackException{
EntityManager em=getEntityManager();
em.persist(u);
em.flush();
return u.getIdUtilisateur();
}
}
然后我在java类insertUser中调用addUser()：
public class insertUser {
public static void addToDb(ArrayList<String> userDatas) throws NotSupportedException, SystemException, javax.transaction.RollbackException, HeuristicMixedException, HeuristicRollbackException, Exception
{
Utilisateur u=new Utilisateur();
u.setMail(userDatas.get(0));
u.setNom(userDatas.get(1));
u.setPrénom(userDatas.get(2));
u.setProfil(userDatas.get(3));
u.setPassword(userDatas.get(4));
u.setTel(userDatas.get(5));
UtilisateurFacade uf=new UtilisateurFacade();
uf.addUser(u);
}
}
userDatas由从表单获取数据的servlet发送。 但是我得到了这个错误：
Grave: java.lang.IllegalArgumentException: Object: beans.Utilisateur[ idUtilisateur=null ] is not a known Entity type.
at org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.registerNewObjectForPersist(UnitOfWorkImpl.java:4226)
at org.eclipse.persistence.internal.jpa.EntityManagerImpl.persist(EntityManagerImpl.java:507)
at beans.UtilisateurFacade.addUser(UtilisateurFacade.java:50)
at inserts.insertUser.addToDb(insertUser.java:37)
at servlets.getUserInfo.processRequest(getUserInfo.java:57)
at servlets.getUserInfo.doPost(getUserInfo.java:105)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:416)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:283)
at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:206)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:180)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:283)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:200)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:132)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:111)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:536)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:591)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:571)
at java.lang.Thread.run(Thread.java:745)
这是我的persistence.xml，我尝试手动添加<class>beans.Utilisateur</class>，但是当它不在这里时，它已经给我错误了：
<?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="LaCuillere-ejbPU" transaction-type="JTA">
<jta-data-source>LaCuillereDB</jta-data-source>
<class>beans.Utilisateur</class>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<property name="eclipselink.ddl-generation" value="create-or-extend-tables"/>
<property name="eclipselink.target-server" value="SunAS9"/>
</properties>
</persistence-unit>
</persistence>