According the book[Tapestry.5.Building.Web.Applications] --Create own component ,but when i create the dateinput component and run it in a simple page,i get the follow error:
An unexpected application exception has occurred. Exception constructing service 'ValueEncoderSource': Error invoking service builder method org.apache.tapestry.services.TapestryModule.build(Map) (at TapestryModule.java:1567) (for service 'ValueEncoderSource'): Error invoking service contribution method org.apache.tapestry.hibernate.HibernateModule.contributeValueEncoderSource(M appedConfiguration, HibernateSessionSource, Session, TypeCoercer): Exception constructing service 'HibernateSessionSource': Error invoking service builder method org.apache.tapestry.hibernate.HibernateModule.build(Logger, List, RegistryShutdownHub) (at HibernateModule.java:124) (for service 'HibernateSessionSource'): org/dom4j/DocumentException I don't know what caused this error?please help me.
