[SOLVED] "org.hibernate.Session" ClassNotFoundException

[Talha Kabakus]

Hello to all,

Despite I added all necessary .jar files to project, I always take boring exception warnings that say "class not found". I added the code and exception output below. I'll be so happy if someone can help me.

Thanks in advance..
With regards,
T

-----------------------------------------------------

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		KisiHelper kh = new KisiHelper();  // ======> *Exception Warning!!!*
		try {			
			JSONArray arr = kh.getAll();
			response.getWriter().write(arr.toString());
		} catch(Exception e) {
			e.printStackTrace();
		}
	}

---------------------------------------------------------

public class KisiHelper {
	
	public JSONArray getAll() {	
		JSONArray arr = null;
		
		try {
			System.out.println("KisiHelper calisti..");
			SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
			Session session = sessionFactory.openSession();
			Transaction transaction = session.beginTransaction();
			String hql = "from Kisi";
		    Query query = session.createQuery(hql);
		    List<Kisi> list = query.list();
			List<Kisi> kisiList = list;
		    arr = JSONArray.fromObject(kisiList);
		    transaction.commit();
		    session.close();
		} catch(Exception e) {
			e.printStackTrace();
		}
		return arr;
	}
}

----------------------------------------------------------------
*Exception:*

java.lang.ClassNotFoundException: org.hibernate.Session
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)
	at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
*	at servlets.tabloDoldur.doGet(tabloDoldur.java:34)*
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
	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:293)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
	at java.lang.Thread.run(Thread.java:619)

[David Newton]

What libraries are you deploying?

[Talha Kabakus]

David Newton wrote:What libraries are you deploying?

I'm deploying these libraries:

hibernate-3.0.5.jar [for Hibernate]

json-lib-0.9.jar [for JSON Objects]

ojdbc14.jar [Oracle Driver]

persistence.jar [for Hibernate Reverse Engineering]

By the way I'm using Eclipse Galileo.
Thanks.

[David Newton]

Are you deploying all the dependencies of those libraries? I thought Hibernate had a number of other dependencies.

In any case, I'd both (a) make *sure* you're deploying the libraries you believe you are, (b) make sure the transitive dependencies are also deployed [1], and (c) turn debug logging on and check your application startup logs to determine the root cause of the failure.

[1] http://mvnrepository.com/artifact/org.hibernate/hibernate/3.0.5

[Mustafa Garhi]

Check the build directory of Eclipse(target e.g.) and see if the jars are copied there after the project is built.

[Talha Kabakus]

Thank you so much David Newton and Mustafa Garhi for your helps and recommendations.
As you said, the problem is occured because of build path.
With regards,
T

[David Newton]

Great; glad you worked it out!