我之前提出过这个问题，但是当我在网站上发现新问题时，我发现问题写了。好。我正在从事两个项目：创建一个EJB项目和一个webapp。在这两者中，我必须将来自webapp的信息存储到数据库中。第一个有效。在seconde中，我收到此错误
ERROR [org.jboss.ejb3.invocation] (http-localhost-127.0.0.1-8180-1) JBAS014134: EJB Invocation failed on component ENIT for method public abstract java.util.List metier.sessions.EnitLocal.consulterProf(): javax.ejb.EJBException: java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: Enseignants is not mapped [Select coount(p) from Enseignants p ]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.handleExceptionInOurTx(CMTTxInterceptor.java:166) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:230) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.required(CMTTxInterceptor.java:304) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.processInvocation(CMTTxInterceptor.java:190) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.as.ejb3.component.interceptors.CurrentInvocationContextInterceptor.processInvocation(CurrentInvocationContextInterceptor.java:41) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.as.ejb3.component.interceptors.LoggingInterceptor.processInvocation(LoggingInterceptor.java:59) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.as.ee.component.NamespaceContextInterceptor.processInvocation(NamespaceContextInterceptor.java:50) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.as.ee.component.TCCLInterceptor.processInvocation(TCCLInterceptor.java:45) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.as.ee.component.ViewService$View.invoke(ViewService.java:165) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.as.ee.component.ViewDescription$1.processInvocation(ViewDescription.java:173) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.as.ee.component.ProxyInvocationHandler.invoke(ProxyInvocationHandler.java:72) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
at metier.sessions.EnitLocal$$$view1.consulterProf(Unknown Source) [EnitEJB.jar:]
at Servlets.Controleur.doPost(Controleur.java:58)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161)
at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50) [jboss-as-jpa-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:154)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930)
at java.lang.Thread.run(Unknown Source) [rt.jar:1.7.0_45]
Caused by: java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: Enseignants is not mapped [Select coount(p) from Enseignants p ]
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1348) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1289) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:288) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final]
at org.jboss.as.jpa.container.AbstractEntityManager.createQuery(AbstractEntityManager.java:425) [jboss-as-jpa-7.1.0.Final.jar:7.1.0.Final]
at metier.sessions.EnitImpl.consulterProf(EnitImpl.java:49) [EnitEJB.jar:]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_45]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) [rt.jar:1.7.0_45]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) [rt.jar:1.7.0_45]
at java.lang.reflect.Method.invoke(Unknown Source) [rt.jar:1.7.0_45]
at org.jboss.as.ee.component.ManagedReferenceMethodInterceptorFactory$ManagedReferenceMethodInterceptor.processInvocation(ManagedReferenceMethodInterceptorFactory.java:72) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:36) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.as.jpa.interceptor.SBInvocationInterceptor.processInvocation(SBInvocationInterceptor.java:47) [jboss-as-jpa-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.invocation.InitialInterceptor.processInvocation(InitialInterceptor.java:21) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.as.ee.component.interceptors.ComponentDispatcherInterceptor.processInvocation(ComponentDispatcherInterceptor.java:53) [jboss-as-ee-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.as.ejb3.component.pool.PooledInstanceInterceptor.processInvocation(PooledInstanceInterceptor.java:51) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:288) [jboss-invocation-1.1.1.Final.jar:1.1.1.Final]
at org.jboss.as.ejb3.tx.CMTTxInterceptor.invokeInOurTx(CMTTxInterceptor.java:228) [jboss-as-ejb3-7.1.0.Final.jar:7.1.0.Final]
... 35 more
Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: Enseignants is not mapped [Select coount(p) from Enseignants p ]
at org.hibernate.hql.internal.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:180) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.hql.internal.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:110) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.hql.internal.ast.tree.FromClause.addFromElement(FromClause.java:93) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.hql.internal.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:326) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3252) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3141) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:694) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:550) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:287) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:235) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:248) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:183) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:136) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:101) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:80) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:119) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.internal.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:214) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:192) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.internal.SessionImpl.createQuery(SessionImpl.java:1537) [hibernate-core-4.0.1.Final.jar:4.0.1.Final]
at org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:285) [hibernate-entitymanager-4.0.1.Final.jar:4.0.1.Final]
... 56 more mapped
这是我课程的一部分
@Stateless(name = "ENIT")
public class EnitImpl implements EnitLocal {
@PersistenceContext(unitName = "tp3")
private EntityManager em ;
public EnitImpl() {
// TODO Auto-generated constructor stub
}
public void addCours(Cours cour) {
// TODO Auto-generated method stub
em.merge(cour);
}
public List<Cours> consulterCours() {
// TODO Auto-generated method stub
Query req = em.createQuery("Select c from cours c ");
return req.getResultList();
}
@TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
public Cours consulter(int id) {
// TODO Auto-generated method stub
Cours cours = em.find(Cours.class, id);
if (cours == null)
throw new RuntimeException("Cours inexistant");
return cours;
}
public void addProf(Enseignant E) {
// TODO Auto-generated method stub
em.merge(E);
}
public List<Enseignant> consulterProf() {
Query req = em.createQuery("Select p from enseignants p ");
return req.getResultList();
}
@TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
public Enseignant consulterP(int id) {
Enseignant E = em.find(Enseignant.class, id);
if (E == null)
throw new RuntimeException("Enseignant non trouvé");
return E;
}
}
界面：
@Local
public interface EnitLocal {
public void addProf(Enseignant E);
public List<Enseignant> consulterProf();
public Enseignant consulterP(int id);
public void addCours(Cours C);
public List<Cours> consulterCours();
public Cours consulter(int id);
}
当我调试程序时，em为空。我正在使用em.persist()，但它没有用。所以我使用了em.merge()。这个项目和旧项目之间的差异在于我在这里加入了很多东西。
有人能看到问题吗？
Enseignants类的一部分：
@Entity
@Table (name="Enseignants")
public class Enseignant implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue( strategy = GenerationType.IDENTITY )
private int id_int;
public Enseignant() {
// TODO Auto-generated constructor stub
}
public Enseignant(int id_int, String nom, String prenom, String grade) {
super();
this.id_int = id_int;
Nom = nom;
Prenom = prenom;
Grade = grade;
}
@Override
public String toString() {
return "Enseignant [id_int=" + id_int + ", Nom=" + Nom + ", Prenom="
+ Prenom + ", Grade=" + Grade + "]";
}
public int getId_int() {
return id_int;
}
public void setId_int(int id_int) {
this.id_int = id_int;
}
public String getNom() {
return Nom;
}
public void setNom(String nom) {
Nom = nom;
}
public String getPrenom() {
return Prenom;
}
public void setPrenom(String prenom) {
Prenom = prenom;
}
public String getGrade() {
return Grade;
}
public void setGrade(String grade) {
Grade = grade;
}
public static long getSerialversionuid() {
return serialVersionUID;
}
@Column (name="Nom")
private String Nom;
@Column (name="Prenom")
private String Prenom;
@Column (name="Grade")
private String Grade;