ExceptionInInitializerError

Generic1 · **Joined:** Thu Oct 29, 2009 2:59 am **Posts:** 10

Hello,

I have a problem according to use the hibernate framework with the tomcat server. If I start my web application, I get the exception below -> if an exception occures than the tomcat server starts once again, and with the second launch all works fine,

Actually I have no idea, why this exception happens, if I had something misconfigured, than it wouldn't still work at the second time, but it works at the second time.
Could it be that I have some timing problem, because I use also the Spring Framework but in my case the Spring Framework doesn't support the Hibernate Framework, this means they are not connected.

Thanks for any help,
All the best,
Generic1

Code:

Exception in thread "Thread-1" java.lang.ExceptionInInitializerError
        at net.test.hibernate.BasicManager.getSession(BasicManager.java:28)
        at net.test.hibernate.EventManager.storeLogging(EventManager.java:37)
        at net.test.hibernate.DatabaseInterface.createAndStoreLogging(DatabaseInterface.java:43)
        at net.test.hibernate.StartDatabase.createAndStoreLogging(StartDatabase.java:185)
        at net.test.service.StartService.<init>(StartService.java:17)
        at net.test.contextlistener.ContextListener$1.run(ContextListener.java:22)
Caused by: org.hibernate.InvalidMappingException: Could not parse mapping document from resource net/test/hibernate/tTrend.hbm.xml
        at org.hibernate.cfg.Configuration.addResource(Configuration.java:616)
        at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1635)
        at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1603)
        at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1582)
        at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1556)
        at org.hibernate.cfg.Configuration.configure(Configuration.java:1476)
        at net.test.hibernate.InitSessionFactory.<clinit>(InitSessionFactory.java:16)
        ... 6 more
Caused by: org.hibernate.InvalidMappingException: Could not parse mapping document from input stream
        at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:555)
        at org.hibernate.cfg.Configuration.addResource(Configuration.java:613)
        ... 12 more
Caused by: org.dom4j.DocumentException: null Nested exception: null
        at org.dom4j.io.SAXReader.read(SAXReader.java:484)
        at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:546)
        ... 13 more
13.01.2010 14:57:43 org.hibernate.cfg.Configuration addResource

Froestel · **Posted:** Wed Jan 13, 2010 3:19 pm

Hi Generic1,

looks like your org.dom4j.io.SAXReader is receiving null instead of a valid XML mapping file. You should ensure that the file net/test/hibernate/tTrend.hbm.xml is available when it is attempted to be added as a mapping resource.

If you cannot ensure that you might want to wrap a null or availability check around your mapping files to circumvent the exception from occuring. Note, that this might cause problems later when mapping resources are required that haven't been added before.

CU
Froestel

Generic1 · **Joined:** Thu Oct 29, 2009 2:59 am **Posts:** 10

Hello Froestel,

thanks for your reply!
Do you have a hint, how and where respectively I can ensure that the file net/test/hibernate/tTrend.hbm.xml is available when it is attempted to be added as a mapping resource? Because the file is always there in my application, Actually I don't know why the Hibernate Framework can't find the file?
Or how and where can I check around the mapping files to circumvent the exception from occuring?

Thanks and all the best,
Generic

Code:

public synchronized Session getSession() {                                               
        if (factory == null) {           
            factory = InitSessionFactory.getInstance();  // here the exception below occures
            }
        return factory.getCurrentSession();
        }

Code:

Exception in thread "Thread-1" java.lang.ExceptionInInitializerError
        at net.test.hibernate.BasicManager.getSession(BasicManager.java:28)
        at net.test.hibernate.EventManager.storeLogging(EventManager.java:37)
        at net.test.hibernate.DatabaseInterface.createAndStoreLogging(DatabaseInterface.java:43)
        at net.test.hibernate.StartDatabase.createAndStoreLogging(StartDatabase.java:185)
        at net.test.service.StartService.<init>(StartService.java:24)
        at net.test.contextlistener.ContextListener$1.run(ContextListener.java:22)
Caused by: java.lang.NullPointerException
        at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1634)
        at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1603)
        at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1582)
        at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1556)
        at org.hibernate.cfg.Configuration.configure(Configuration.java:1476)
        at net.testhibernate.InitSessionFactory.<clinit>(InitSessionFactory.java:16)
        ... 6 more
14.01.2010 15:16:39 org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues
INFO: Mapping class: net.test.hibernate.TLogin -> TLogin

Generic1 · **Joined:** Thu Oct 29, 2009 2:59 am **Posts:** 10

I have tried out something but it doesn't improve the situtation,
Do you have a tip what I could do more?
All the best,
Generic

csaarmeme · **Joined:** Fri Jan 15, 2010 1:35 pm **Posts:** 1

Do you use Vista? I had the same problem, and I could only solve it by changing pc!
C.

Generic1 · **Joined:** Thu Oct 29, 2009 2:59 am **Posts:** 10

No, I'am using Windows XP, but I have no idea what I could do to resolve the problem.
So I am glad for any idea.