关于hibernate放到linux 下连接数据库的问题

Question

关于hibernate放到linux 下连接数据库的问题一个工程在window下测试没有问题，但是放到linux服务器上就出现SessionFactory为空%%%% Error Creating SessionFactory %%%%
org.hibernate.MappingException: Could not read mappings from resource: com/banma/killvirus/pojo/Login.hbm.xml
        at org.hibernate.cfg.Configuration.addResource(Configuration.java:485)
        at org.hibernate.cfg.Configuration.parseMappingElement(Configuration.java:1465)
        at org.hibernate.cfg.Configuration.parseSessionFactory(Configuration.java:1433)
        at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1414)
        at org.hibernate.cfg.Configuration.doConfigure(Configuration.java:1390)
        at org.hibernate.cfg.Configuration.configure(Configuration.java:1310)
        at com.banma.common.HibernateSessionFactory.rebuildSessionFactory(HibernateSessionFactory.java:59)
        at com.banma.common.HibernateSessionFactory.getSession(HibernateSessionFactory.java:43)
        at com.banma.killvirus.struts.action.KillVirusManageAction.execute(KillVirusManageAction.java:33)
        at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
        at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
        at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
        at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at com.banma.common.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:20)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
        at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
        at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
        at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
        at java.lang.Thread.run(Thread.java:595)
Caused by: org.hibernate.DuplicateMappingException: Duplicate class/entity mapping com.banma.killvirus.pojo.Login
        at org.hibernate.cfg.Mappings.addClass(Mappings.java:118)
        at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:154)
        at org.hibernate.cfg.Configuration.add(Configuration.java:386)
        at org.hibernate.cfg.Configuration.addInputStream(Configuration.java:427)
        at org.hibernate.cfg.Configuration.addResource(Configuration.java:482)
        ... 31 more
bbbbbbbbbbbbb
java.lang.NullPointerException
        at com.banma.killvirus.struts.action.KillVirusManageAction.execute(KillVirusManageAction.java:38)
        at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419)
        at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
        at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
        at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at com.banma.common.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:20)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:210)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:870)
        at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
        at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
        at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:685)
        at java.lang.Thread.run(Thread.java:595)
这是怎么回事啊