Hibernate统计时的java.lang.ClassCastException: java.lang.Long错误请解


程序为一段统计表中记录数:

===================================================================
this,countHql= "select   count(rc.id)   from   RCdata   rc "
List   l   =   this.getHibernateTemplate().find(this.countHql);
if   (l   !=   null   &&   !(l.isEmpty()))   {
          this.totalRows   =   ((Integer)   l.get(0)).intValue();//Exeception就发生在这
}
else   {
          return   false;
}
这段程序运行find都没错,通过单步可以看到List   l都得到正确的值了,可是在将List转为Integer存到this.totalRows时发生了cast错误,不知道什么原因?
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错误信息:

type   Exception   report

message  

description   The   server   encountered   an   internal   error   ()   that   prevented   it   from   fulfilling   this   request.

exception  

javax.servlet.ServletException:   java.lang.Long
org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:535)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:433)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


root   cause  

java.lang.ClassCastException:   java.lang.Long
com.dmaple.ezlife.dao.hibernate.CommonPageHibernateDAO.canDoNow(CommonPageHibernateDAO.java:91)
com.dmaple.ezlife.service.imp.AdminServiceImp.getCorpRecords(AdminServiceImp.java:116)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native   Method)
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown   Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown   Source)
java.lang.reflect.Method.invoke(Unknown   Source)
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:280)
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:187)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:154)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:107)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:176)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:210)
$Proxy1.getCorpRecords(Unknown   Source)
com.dmaple.ezlife.web.action.AdminCorpMaintainAction.execute(AdminCorpMaintainAction.java:43)
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)