Calling a jsp page from an if statement??

Question

Hi I am going toexplain what I can do already first then explain what I want to do:
1) I have an html page that has a form. This form requests a userId and password to be entered. Upon submission of this form a java servlet is called
2) the java servlet checks the initial inputted values of the form. I check to enusre that the user did enter somthing in both fields. I also check to make sure that the user did not enter just spaces.
3) I return a error message to the user if the input is invalid ( I do this through a series of if statements)
What I want to happen: Instead of simply return an error message, I would like to jump out of the java if statement and into a jsp page (or another html form I havent decided yet)
In this seperate page I would like to display the form again with the incorrect areas highlighted. I am just not sure how to transfer control from the if statement to the new jsp page.
All help is appreciated!
Thanks

Answer 1

If you want to transfer control from servlet(.java file) to JSP file or servlet to servlet than use
public void doPost(HttpServletRequest req,HttpServletResponse res) throws ServletException
if(..)
res.sendRedirect("http://abc.com/foldername/page1.html");
}else if(..){
res.sendRedirect("http://abc.com/foldername/page2.jsp");
}else if(..){
res.sendRedirect("servlet3");
}//end if
}//end doPost