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NikhilKumar
 Post subject: Need help in connecting To PostgreSQL
PostPosted: Mon Sep 21, 2009 2:50 pm 
Newbie

Joined: Sun Sep 13, 2009 12:56 am
Posts: 4
Hi All

I am trying to connect to PostgreSQL DB, and getting problem

Quote:
java.lang.UnsupportedClassVersionError: Bad version number in .class file
java.lang.ClassLoader.defineClass1(Native Method)
java.lang.ClassLoader.defineClass(Unknown Source)
java.security.SecureClassLoader.defineClass(Unknown Source)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1847)
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:873)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1326)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1205)
java.lang.ClassLoader.loadClassInternal(Unknown Source)
java.lang.Class.forName0(Native Method)
java.lang.Class.forName(Unknown Source)
org.hibernate.connection.DriverManagerConnectionProvider.configure(DriverManagerConnectionProvider.java:57)
org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:80)
org.hibernate.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:362)
org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:60)
org.hibernate.cfg.Configuration.buildSettings(Configuration.java:1463)
org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1004)
controller.MainServlet.doPost(MainServlet.java:30)
javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)


My cfg file looks like below..

Code:
<session-factory>
   <property name="connection.username">postgres</property>
   <property name="connection.url">jdbc:postgresql://localhost:5432/nikdb</property>
   <property name="dialect">org.hibernate.dialect.PostgreSQLDialect</property>
   <property name="connection.password">tiger</property>
   <property name="connection.driver_class">org.postgresql.Driver</property>
   <property name="show_sql">true</property>
   <mapping resource="controller/all.hbm.xml" />

</session-factory>


I am using
Quote:
postgresql-8.4-701.jdbc4.jar

and DB version is 8.4
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mephesto
 Post subject: Re: Need help in connecting To PostgreSQL
PostPosted: Mon Sep 21, 2009 7:02 pm 
Newbie

Joined: Fri Jan 23, 2009 8:01 pm
Posts: 13
Check that your JDK version is compatible. I use 8.3 jdbc3 w/ JDK 1.5 no problem. jdbc4 requires 1.6 I believe. Maybe try with 8.4 jdbc3 and see if you get any headway.

http://jdbc.postgresql.org/download.html
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