IllegalStateException in forward

[Ronaldo Luiz]

I was trying to test the example of this tutorial: WTP Tutorials - Building a School Schedule Web Application.
This exception has been throwed when trying to execute the forward below.
java.lang.IllegalStateException: Cannot forward after response has been committed

getServletContext().getRequestDispatcher("/Schedule.jsp").forward(request, response);

 public class ScheduleServlet extends HttpServlet implements Servlet {
 
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
super.doPost(request, response);
String title = request.getParameter("title");
int starttime = Integer.parseInt(request.getParameter("starttime"));
int endtime = Integer.parseInt(request.getParameter("endtime"));
String[] days = request.getParameterValues("day");
SchoolSchedule schedule =
(SchoolSchedule)request.getSession(true).getAttribute("schoolschedule");
if(schedule == null){
schedule = new SchoolSchedule();
}
if(days != null)
{
for(int i = 0; i < days.length; i++)
{
String dayString = days[i];
int day;
if(dayString.equalsIgnoreCase("SUN")) day = 0;
else if(dayString.equalsIgnoreCase("MON")) day = 1;
else if(dayString.equalsIgnoreCase("TUE")) day = 2;
else if(dayString.equalsIgnoreCase("WED")) day = 3;
else if(dayString.equalsIgnoreCase("THU")) day = 4;
else if(dayString.equalsIgnoreCase("FRI")) day = 5;
else day = 6;

SchoolClass clazz = new SchoolClass(title, starttime, endtime, day);
schedule.addClass(clazz);
}
}

request.getSession().setAttribute("schoolschedule", schedule);
getServletContext().getRequestDispatcher("/Schedule.jsp").forward(request, response);
}
 

 
} 

[William Brogden]

java.lang.IllegalStateException: Cannot forward after response has been committed

That means what it says - something flushed the response output buffer - I suspect the code:

 super.doPost(request, response); 

What is that in there for/
Bill

[Ronaldo Luiz]

Ok, I removed this and the problem was resolved.
The strange thing is that when I run the eclipse wizard to override a method, the wizard put this line automatically.

[Paul Bourdeaux]

Ah, the power of a smart IDE and its ability to break a simple program...

I am not an Eclipse expert, but most "smart" IDEs have a place where you can modify the templates and remove the call to super...

Personally, I hate using wizards for problems just like that!

[sureshreddy puli]

try to work on Eclipse IDE. It saves your valueable time.