请问一下这个错误怎么改

HTTP Status 500 - An exception occurred processing JSP page /iframe/head.jsp at line 9

 

 

type Exception report

 

message An exception occurred processing JSP page /iframe/head.jsp at line 9

 

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

 

exception

org.apache.jasper.JasperException: An exception occurred processing JSP page /iframe/head.jsp at line 9

 

6: <%

7: String path = request.getContextPath();

8: String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

9: List sysList=sys.getSiteInfo();

10: List affList=abc.getAllAffiche();

11: List newsList=news.getIndexNews();

12: List AllnewsList=news.getAllNews(); 

 

 

Stacktrace:

 org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:574)

 org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476)

 org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)

 org.apache.jasper.se

head.JSP 第九行第一种可能是因为tomcat版本太低

第二最可能的是没有导入jstl.jar包造成