I have checked my code many time to make sure that whether page contains any variable or object with null reference but i dint find anything wrong..
I am integrating payment gateway to my website. Payment process going good but after payment transferred
ccavenue (which is payment gateway) it returns to redirecturl.jsp page but here i am getting http 500 error with null pointer exception.
Please help me to solve out this problem.
Thanks in advance.
Since JSP is converted to the Java code for a servlet, the stack trace for your NPE will only make sense if you look at the corresponding servlet code.
Flailing around in the JSP code will not help. Find out where your server stores the servlet code and get the stack trace from the logs. If you are using tomcat, the "work" and "logs" directories are the place to start.