I take it you're using a SimpleFormController or similar. The onSubmit method returns a ModelAndView. What you need to do is to add the result you want to show as an object to the ModelAndView. So, you might decide to set a Boolean variable called 'succeeded' to True or False depending on how the insert went.
Your JSP which displays the result can then use the variable 'succeeded' to decide what to display. (You could, of course, use a String or other variable instead of a Boolean, it's just a means of passing information into your view).
int status = memberJdbc.insert(empNo,empName,designation, projectManagerId,clusterManagerId,location,psaGrade,projectName);
//Your ModelAndView object...