Method in the stateless bean:
@SuppressWarnings("unchecked")
| public User check(String login,String mdp)
| {
| Collection<User> users = new HashSet<User>();
|
| users = em.createQuery( "SELECT u " +
| "FROM User u " +
| "where
user_login_id='" + login + "' and pass='"+ mdp +"'").getResultList();
| User u = null;
| for (Iterator<User> iterator = users.iterator();
iterator.hasNext();)
| u = iterator.next();
| return u;
| }
Method in the exposed stateless bean trying to call the above method :
@SuppressWarnings("unchecked")
| public Utilisateur check(String login,String mdp)
| {
| Collection<Utilisateur> users = new HashSet<Utilisateur>();
|
| System.out.println("ENTERED USER CHECK "+login+mdp);
|
| Object random = em.createQuery("Select count(u)"+"from
Utilisateur u").getSingleResult();
|
| users = em.createQuery( "SELECT u " +
| "FROM
Utilisateur u " +
| "where
user_login_id='" + login + "' and motdepasse='"+ mdp +"'").getResultList();
| Utilisateur u = null;
| for (Iterator<Utilisateur> iterator = users.iterator();
iterator.hasNext();)
| u = iterator.next();
| return u;
| }
Stack trace: anonymous wrote :
| Caused by: java.lang.NullPointerException
| at com.session.impl.UserManagerBean.check(UserManagerBean.java:122)
| at com.session.impl.UserBean.check(UserBean.java:37)
| at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
| at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
| at java.lang.reflect.Method.invoke(Method.java:585)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:112)
| at
org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:166)
| at
org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
| at
org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
| at
org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
| at
org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
| at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
| ... 39 more
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