求帮助，Hibernate启动服务报java.lang.ClassNotFoundException: org.hibernate.dialect.Oracle10gDialect

求助，hibernate启动服务报告Java . lang . classnotfoundexception:org . Hibernate . Dial . Oracle 10g拨号求助，Hibernate启动服务报告Java . lang . classnotfoundexception:org . Hibernate . Dial . Oracle 10g拨号介绍:信息:Validate Jarfile(G:\ Tomcat 6 \ Apache-Tomcat-6 . 0 . 37 \ WEB apps \ GSWL \ we b-INF \ lib \ servlet-API