[zmshang]

This is the error when “Database Explore and Hibernate Tutoria” is running, I want to know what’s wrong with it?

type Exception report

message

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

exception

org.apache.jasper.JasperException
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:372)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

root cause

java.lang.NullPointerException
com.zmshang.hibernate.SessionFactory.currentSession(SessionFactory.java:56)
com.zmshang.hibernate.VipService.getVipdataList(VipService.java:194)
org.apache.jsp.AddVipData_jsp._jspService(AddVipData_jsp.java:130)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.

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[Riyad Kalla]

Well it looks like the session factory is throwing a null pointer exception. Dig into the error logs like the report says and find the full stack trace, then check around line 56 of SessionFactory and see what is throwing the NPE.

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