Hi,
I am running in a NoClassDeffFoundError after clicking a button in my
very basic app. I modified the standard app in Eclipse just a little
bit by adding 1 service method:
1. Created a new GWT project in Eclipse. This gets me the standard
Greeting Service example app - app works
2. I created a User class, which is just a POJO - app works
3. Added a HibernateUtil class for access to Hibernate - app works
4. Added Hibernate JAR to the build path in Eclipse - app works
5. Modified the GreetingServiceImpl by importing
org.hibernate.session, HibernateUtil and User - app works
5. Added the following getUser method to the GreetingServiceImpl - app
breaks!
// Retrieves a user from Hibernate
public User getUser(int userId){
Session session =
HibernateUtil.getSessionFactory().getCurrentSession();
session.beginTransaction();
// Get the User from Hibernate
User user = (User) session.get(User.class, userId);
// TODO Translate user to a serializable data transfer object before
returning
return new User();
}
Whenever I press the Send button in the Greeting Service app I get the
following stacktrace in the Eclipse console:
WARNING: Error for /test/greet
java.lang.NoClassDefFoundError: org/hibernate/Session
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
at java.lang.Class.getConstructor0(Class.java:2699)
at java.lang.Class.newInstance0(Class.java:326)
at java.lang.Class.newInstance(Class.java:308)
at org.mortbay.jetty.servlet.Holder.newInstance(Holder.java:153)
Do you know why this happens? The getUser() method that seems to be
responsible is not even called. And I imported the
org.hibernate.Session class and it's on the Eclipse build bath.
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