以前用jfinal1.09写的小程序，可以直接升级成1.6的么？我换jar包出错了

@JFinal 你好，想跟你请教个问题：

之前一个小博客用jfinal写的，用的是1.09的jar包，我今天把这个包换成1.6的，发现不能用了，怎么回事，求指导呀！

错误如下

Caused by: org.apache.jasper.JasperException: javax.el.MethodNotFoundException: Unable to find method [getPageNumber] with [0] parameters
at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:549)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:412)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339)
at com.jfinal.render.JspRender.render(JspRender.java:56)
... 18 more
Caused by: javax.el.MethodNotFoundException: Unable to find method [getPageNumber] with [0] parameters
at javax.el.BeanELResolver.invoke(BeanELResolver.java:436)
at org.apache.jasper.el.JasperELResolver.invoke(JasperELResolver.java:139)
at org.apache.el.parser.AstValue.getValue(AstValue.java:173)
at org.apache.el.parser.AstLessThanEqual.getValue(AstLessThanEqual.java:38)
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:185)
at org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:1026)
at org.apache.jsp.home.Index_005findex_jsp._jspx_meth_c_005fwhen_005f0(Index_005findex_jsp.java:507)
at org.apache.jsp.home.Index_005findex_jsp._jspService(Index_005findex_jsp.java:314)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
... 31 more