jsp查询数据出错.....9命!!~~~~~~~

hxldatang

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

exception

org.apache.jasper.JasperException
        org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
        org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:36


root cause

java.lang.NullPointerException
        org.apache.jsp.index_jsp._jspService(index_jsp.java:102)
        org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
        org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:36

我是不知道是哪里出错拉,就是那种死也死不明白的