使用的是MYSQL数据库，在查询的时候出现问题

这个是使用Spring-security做的一个权限管理系统，但是对于角色是好的，在查询与角色管理的权限的时候，出现如下的错误，有哪位大侠指点一下！

 

 

2013-8-8 11:35:49 org.apache.struts.util.PropertyMessageResources loadLocale
警告:   Resource org/apache/struts/action/ActionResources_zh_CN.properties Not Found.
2013-8-8 11:35:49 org.apache.struts.util.PropertyMessageResources loadLocale
警告:   Resource org/apache/struts/action/ActionResources_zh.properties Not Found.
2013-8-8 11:35:49 org.apache.struts.action.RequestProcessor processException
警告: Unhandled Exception thrown: class java.lang.NullPointerException
2013-8-8 11:35:49 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet action threw exception
java.lang.NullPointerException
 at cn.tsht.ems.orm.hibernate.SimpleHibernateDao.getSession(SimpleHibernateDao.java:74)
 at cn.tsht.ems.orm.hibernate.SimpleHibernateDao.createCriteria(SimpleHibernateDao.java:183)
 at cn.tsht.ems.orm.hibernate.SimpleHibernateDao.find(SimpleHibernateDao.java:208)
 at cn.tsht.ems.orm.hibernate.SimpleHibernateDao.getAll(SimpleHibernateDao.java:356)
 at cn.tsht.ems.service.AuthorityService.getAll(AuthorityService.java:18)
 at cn.tsht.ems.service.AuthorityService$$FastClassByCGLIB$$e0cdee6e.invoke()
 at net.sf.cglib.proxy.MethodProxy.invoke(MethodProxy.java:149)
 at org.springframework.aop.framework.Cglib2AopProxy$CglibMethodInvocation.invokeJoinpoint(Cglib2AopProxy.java:700)
 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
 at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
 at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
 at org.springframework.aop.framework.Cglib2AopProxy$DynamicAdvisedInterceptor.intercept(Cglib2AopProxy.java:635)
 at cn.tsht.ems.service.AuthorityService$$EnhancerByCGLIB$$b51371fa.getAll()
 at cn.tsht.ems.web.struts.action.RoleAction.roleInputUi(RoleAction.java:74)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:597)
 at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:269)
 at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:170)
 at org.apache.struts.actions.MappingDispatchAction.execute(MappingDispatchAction.java:166)
 at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425)
 at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228)
 at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
 at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96)
 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
 at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
 at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
 at java.lang.Thread.run(Thread.java:619)