package cs3220.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/Add")
public class Add extends HttpServlet {
private static final long serialVersionUID = 1L;
public Add()
{
super();
}
@Override
protected void doGet( HttpServletRequest request,
HttpServletResponse response ) throws ServletException, IOException
{
String a = request.getParameter( "a" );
String b = request.getParameter( "b" );
if( a == null || a.trim().length() == 0 || b == null
|| b.trim().length() == 0 )
{
response.sendRedirect( "AddForm.html" );
return;
}
int sum = Integer.parseInt( a ) + Integer.parseInt( b );
response.setContentType( "text/html" );
PrintWriter out = response.getWriter();
out.println( "<html><head><title>Add</title></head><body>" );
out.println(
"<p>the sum of " + a + " and " + b + " is " + sum + ".</p>" );
out.println( "</body></html>" );
}
protected void doPost( HttpServletRequest request,
HttpServletResponse response ) throws ServletException, IOException
{
doGet( request, response );
}
}