I get the error: java.lang.ClassNotFoundException: org.hibernate.connection.C3P0ConnectionProvider
I've know what the ClassNotFoundException means, but I have c3p0-0.9.1.2.jar included in my build path.
I use Eclipse 3.5.2 and Hibernate 3.
I have the following jars included in my build path.
antlr-2.7.6.jar
c3p0-0.9.1.2.jar
commons-collections-3.1.jar
commons-lang-2.5.jar
dom4j-1.6.1.jar
hibernate-core.jar
javassist-3.9.0.GA.jar
jta-1.1.jar
log4j-1.2.15.jar
slf4j-api-1.5.11.jar
slf4j-log4j12-1.5.11.jar
The error:
Code:
ERROR - (ConnectionProviderFactory.java:99) - Could not instantiate connection provider
java.lang.ClassNotFoundException: org.hibernate.connection.C3P0ConnectionProvider
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:315)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:330)
at java.lang.ClassLoader.loadClass(ClassLoader.java:250)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:398)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at org.hibernate.util.ReflectHelper.classForName(ReflectHelper.java:123)
at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:96)
at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:79)
at org.hibernate.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:448)
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:89)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2101)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1325)
at util.SessionHandler.<clinit>(SessionHandler.java:9)
at main.RegisterMain.main(RegisterMain.java:30)
Exception in thread "main" java.lang.ExceptionInInitializerError
at main.RegisterMain.main(RegisterMain.java:30)
Caused by: org.hibernate.HibernateException: Could not instantiate connection provider: org.hibernate.connection.C3P0ConnectionProvider
at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:100)
at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:79)
at org.hibernate.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:448)
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:89)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2101)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1325)
at util.SessionHandler.<clinit>(SessionHandler.java:9)
... 1 more
And I have this in my hibernate.cfg.xml:
Code:
<property name="connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property>
<property name="c3p0.min_size">0</property>
<property name="c3p0.max_size">20</property>
<property name="c3p0.timeout">1800</property>
<property name="c3p0.max_statements">50</property>
<property name="c3p0.idleConnectionTestPeriod">5</property>
<property name="c3p0.acquire_increment">1</property>
Am I missing a file? Can it be a version problem?
Edit:
I have added hibernate3.jar to the buildpath. Now I get the following error:
Code:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
at org.hibernate.connection.C3P0ConnectionProvider.<clinit>(C3P0ConnectionProvider.java:32)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at java.lang.Class.newInstance0(Class.java:355)
at java.lang.Class.newInstance(Class.java:308)
at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:96)
at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:79)
at org.hibernate.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:448)
at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:89)
at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2101)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1325)
at util.SessionHandler.<clinit>(SessionHandler.java:9)
at main.RegisterMain.main(RegisterMain.java:30)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:315)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:330)
at java.lang.ClassLoader.loadClass(ClassLoader.java:250)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:398)
... 15 more
I use log4j as logger. How can I let c3p0 use log4j?
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