?? controller.java
字號:
import javax.servlet.*;
// A controller servlet. This servlet acts as a dispatcher for requests
// generated throughout a session. It is assumed that each type of request is
// tagged with a "submit" parameter with a unique value. Depending on the
// value, this servlet forwards the request to the appropriate servlet.
// M. Liu
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
public class Controller extends HttpServlet
{
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException
{
String url = null;
String destiny = (request.getParameter("submit")).trim();
if (destiny.equals("ONE"))
url="/servlet/HelloWorldExample";
else
if (destiny.equals("TWO"))
url="/servlet/RequestInfoExample";
else
if (destiny.equals("THREE"))
url="/servlet/CookieExample";
ServletContext sc = getServletContext();
RequestDispatcher rd = sc.getRequestDispatcher(url);
rd.forward(request,response);
} //end doPost
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException
{
doPost(request, response);
}
} //end class
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