SQL SERVER的存储过程，在java调用时出错

SQL SERVER的存储过程代码：
create  procedure allbillproc     
@tablename varchar(80) ,     
@strOrder varchar(50) ,     
@PageIndex int = 1,     
@PageSize int = 15,     
@strGetFields varchar(200) = '*',     
@OutPut int output     
as      
Begin     
Declare @strSql varchar(500)     
     
DECLARE   @SQL   NVARCHAR(1000)     
DECLARE   @R BIGINT     
SET   @SQL=  N'select @R=count(*) from  '+@TableName     
EXEC  SP_EXECUTESQL   @SQL,  N' @R BIGINT OUTPUT',  @R OUTPUT     
SET   @OutPut=  @R     
     
if(@PageIndex =1)     
Begin     
   set @strSql='select top '+str(@PageSize)+' '+@strGetFields+' from '+@tablename+' order by '+@strOrder     
End     
Else     
   set @strSql='select top '+str(@PageSize)+' '+@strGetFields+' from '+@tablename+' where ('+@strOrder     
            +' >= ( select Max('+@strOrder+') from ( select top '+str(@PageSize*@PageIndex)+' * from '+@tablename+' order by '     
            +@strOrder+' ) as tempTable)) order by '+ @strOrder     
  select @strSql       
exec(@strSql)     
     
Endjava分页查询代码：
 //分页查询
  public List<Allbill> queryByPage (int pageSize, int pageNow) {
   List<Allbill> list = new ArrayList<Allbill> () ;
   String sql="" ;
    
   try {
     if (this.getConnection()!=null && pageSize>0 && pageNow>0) {
   /*   pstmt = this.getConnection().prepareStatement(
        "select * from allbill order by attid limit "+(pageNow*pageSize-pageSize)+","+pageSize
      );*/
      
         pstmt =   conn.prepareCall( "{call   allbillpro(?,?,?,?,?,?)} "); 
         pstmt.setString(0, "allbill"); 
         pstmt.setString(1,  "attid"); 
         pstmt.setInt(2,pageNow);
         pstmt.setInt(3,pageSize);
         pstmt.setString(4,"billno,gname,guestname");
         pstmt.setInt(5,0);
      rs = pstmt.executeQuery() ;
      System.out.println("查询开始了么？");
      
      while (rs.next()) {
       System.out.println("查询开始了么？");
       System.out.println(rs.getString(1));
       System.out.println(rs.getString(2));
       System.out.println(rs.getString(3));
       allbill = new Allbill () ;
       allbill.setAttid(rs.getInt(1))  ;
       allbill.setBillno(rs.getInt(2)) ;
       allbill.setGname(rs.getString(3)) ;
       allbill.setGuestname(rs.getString(4));
       list.add (allbill) ;
      }
     }
   } catch(SQLException e) {
    e.printStackTrace() ;
   }
   return list ;
  }
报错的代码：
java.sql.SQLException: Invalid parameter index 0.
at net.sourceforge.jtds.jdbc.JtdsPreparedStatement.getParameter(JtdsPreparedStatement.java:340)
at net.sourceforge.jtds.jdbc.JtdsPreparedStatement.setParameter(JtdsPreparedStatement.java:409)
at net.sourceforge.jtds.jdbc.JtdsPreparedStatement.setString(JtdsPreparedStatement.java:689)
at sjhm.dao.PageDAO.queryByPage(PageDAO.java:49)
at sjhm.action.ShowAction.execute(ShowAction.java:83)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:441)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:280)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:243)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:165)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:252)
at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:122)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:179)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:235)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:89)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:130)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:267)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:126)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:138)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:165)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:179)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:176)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:488)
at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
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:857)
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(Unknown Source)