ch5.postError
Class Controller

java.lang.Object
  extended by javax.servlet.GenericServlet
      extended by javax.servlet.http.HttpServlet
          extended by ch5.postError.Controller
All Implemented Interfaces:
java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public class Controller
extends javax.servlet.http.HttpServlet

This controller uses a helper class to complete the request. All of the work that the controller usually does will be relegated to the helper class.

The forms for this application use POST, but the controller does not implement doPost. When a POST request is received, an error will be genererated.

See Also:
Serialized Form

Constructor Summary
Controller()
           
 
Method Summary
protected  void doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
          When the browser makes a GET request, this is the method in the controller that is called.
 
Methods inherited from class javax.servlet.http.HttpServlet
doDelete, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service, service
 
Methods inherited from class javax.servlet.GenericServlet
destroy, getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, init, log, log
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

Controller

public Controller()
Method Detail

doGet

protected void doGet(javax.servlet.http.HttpServletRequest request,
                     javax.servlet.http.HttpServletResponse response)
              throws java.io.IOException,
                     javax.servlet.ServletException
When the browser makes a GET request, this is the method in the controller that is called.

The work of the controller will be handled by the helper. The controller will create the helper class and call its doGet method to process the request.

Overrides:
doGet in class javax.servlet.http.HttpServlet
Parameters:
request - Encapsulates all of the request information that is needed to communicate with the browser.
response - Encapsulates all of the response information that is needed to communicate with the browser.
Throws:
javax.servlet.ServletException - A servlet exception is a severe error that will prevent further processing.
java.io.IOException - An IO exception is a severe error that will prevent further processing.