HTTP Status 500 – Internal Server Error


Type Exception Report

Message An exception occurred processing [vcd/volgadvd/productsByCategory.jsp] at line [9]

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception

org.apache.jasper.JasperException: An exception occurred processing [vcd/volgadvd/productsByCategory.jsp] at line [9]

6:         response.sendRedirect("index.jsp");
7: 	return;
8:     }
9:     Product[] products = Accessors.getProductsBySubCatId(Integer.parseInt(catId));
10: System.out.println("The Product Length "+products.length);
11:     // Page wise display code - START
12:     String pno = request.getParameter("pno");


Stacktrace:
	org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:610)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:489)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:380)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:328)
	jakarta.servlet.http.HttpServlet.service(HttpServlet.java:792)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

Root Cause

jakarta.servlet.ServletException: java.lang.Exception: Exception while OpeningConnection : 
java.lang.NullPointerException
	org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:667)
	org.apache.jsp.vcd.volgadvd.productsByCategory_jsp._jspService(productsByCategory_jsp.java:480)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	jakarta.servlet.http.HttpServlet.service(HttpServlet.java:792)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:380)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:328)
	jakarta.servlet.http.HttpServlet.service(HttpServlet.java:792)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

Root Cause

java.lang.Exception: Exception while OpeningConnection : 
java.lang.NullPointerException
	com.teluguone.TeluguoneConnectAdmin.connect(TeluguoneConnectAdmin.java:46)
	com.teluguone.vcd.Accessors.getProductsBySubCatId(Accessors.java:311)
	org.apache.jsp.vcd.volgadvd.productsByCategory_jsp._jspService(productsByCategory_jsp.java:133)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	jakarta.servlet.http.HttpServlet.service(HttpServlet.java:792)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:466)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:380)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:328)
	jakarta.servlet.http.HttpServlet.service(HttpServlet.java:792)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)

Note The full stack trace of the root cause is available in the server logs.


Apache Tomcat/10.0.27