A exception with : org.hibernate.MappingException: Named query not known.
When my Servlet invoke like this:
try {
| InitialContext ctx = new InitialContext();
| log.info("InitialContext ctx = new InitialContext();");
| userFacad
| log.info("userFacade =e = (UserFacadeService)
ctx.lookup("UserFacade/local"); (UserFacadeService)
ctx.lookup(\"UserFacade/local\");");
| } catch (Exception e) {
| e.printStackTrace();
| log.info(e);
| }
| userFacade.regUser(new User(userName, password));
Jboss Server throw exception like that:
exception
|
| javax.ejb.EJBTransactionRolledbackException:
javax.persistence.PersistenceException: org.hibernate.MappingException: Named
query not known: findUserByName
| org.jboss.ejb3.tx.Ejb3TxPolicy.handleInCallerTx(Ejb3TxPolicy.java:89)
| org.jboss.aspects.tx.TxPolicy.invokeInCallerTx(TxPolicy.java:130)
|
org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:196)
|
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
|
org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
|
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
|
org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:54)
|
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
|
org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:78)
|
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
|
org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
|
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
|
org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
|
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
|
org.jboss.ejb3.stateless.StatelessContainer.localInvoke(StatelessContainer.java:181)
|
org.jboss.ejb3.stateless.StatelessLocalProxy.invoke(StatelessLocalProxy.java:79)
| $Proxy86.findByName(Unknown Source)
| richie.gt.ejb3.facade.UserFacade.regUser(UserFacade.java:37)
I don't know why it happened.Help~~This is UserFacade Class.
public User regUser(User user) {
| /**
| * save a new User
| */
| if (um.findByName(user.getUserName()) != null)
| return null;
| um.save(user);
| return um.findByName(user.getUserName());
| //um is a instance of UserManager class
| }
This is UserManager Class:
@NamedQueries( {
| @NamedQuery(name = "findUserByName", query = "SELECT u FROM
User u WHERE u.userName = : userName")})
| @Stateless
| @Local( { richie.gt.ejb3.service.UserManagerService.class })
| public class UserManager implements UserManagerService {
|
| @PersistenceContext
| protected EntityManager em;
|
| /**
| * findByName (Func)
| */
| public User findByName(String userName) {
| return (User)
em.createNamedQuery("findUserByName").setParameter(
| "userName", userName).getSingleResult();
|
| }
|
This is persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
| <persistence>
| <persistence-unit name="gt">
| <jta-data-source>java:MySqlDS</jta-data-source>
| <class>richie.gt.ejb3.manager.UserManager</class>
| <properties>
| <property name="hibernate.hbm2ddl.auto"
value="create-drop" />
| <property name="show_sql">true</property>
| <property
name="current_session_context_class">thread</property>
| <property name="connection.pool_size">1</property>
| </properties>
| </persistence-unit>
| </persistence>
|
Thank you~ your attention
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