pt.despodata.java.webappl
Class Dispatcher

java.lang.Object
  javax.servlet.GenericServlet
      javax.servlet.http.HttpServlet
          pt.despodata.java.webappl.Dispatcher

All Implemented Interfaces:

java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

public abstract class Dispatcher

extends javax.servlet.http.HttpServlet

Dispatcher.java Created: Thu Sep 20 14:39:37 2001

Version:

$Revision: 1.1.1.1 $

Author:

Paulo Carmo

See Also:

Serialized Form

Constructor Summary

Dispatcher()

Method Summary

protected void	forwardRequest(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, java.lang.String forwardTo) Redireciona o pedido para uma dada pagina.
protected void	forwardToErrorPage(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, java.lang.Throwable error) Redireciona o pedido para uma pagina de erro.
protected abstract java.lang.String	getLoginPage(javax.servlet.http.HttpServletRequest request) Redireciona o pedido para a pagina de autenticacao.
void	service(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)

Methods inherited from class javax.servlet.http.HttpServlet

doDelete, doGet, doHead, doOptions, doPost, doPut, doTrace, getLastModified, 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

Dispatcher

public Dispatcher()

Method Detail

forwardToErrorPage

protected void forwardToErrorPage(javax.servlet.http.HttpServletRequest request,
                                  javax.servlet.http.HttpServletResponse response,
                                  java.lang.Throwable error)
                           throws java.io.IOException,
                                  javax.servlet.ServletException

Redireciona o pedido para uma pagina de erro. A excepcao gerada e guardada no atributo 'javax.servlet.jsp.jspException' que e o que usado pelas paginas de erro em JSP.

Parameters:

request - Pedido do browser.

response - Resposta ao pedido do browser.

error - Excepcao gerada pelo erro.

Throws:

java.io.IOException

javax.servlet.ServletException

service

public void service(javax.servlet.http.HttpServletRequest request,
                    javax.servlet.http.HttpServletResponse response)
             throws java.io.IOException,
                    javax.servlet.ServletException

Throws:

java.io.IOException

javax.servlet.ServletException

getLoginPage

protected abstract java.lang.String getLoginPage(javax.servlet.http.HttpServletRequest request)

Redireciona o pedido para a pagina de autenticacao.

Parameters:

request - Pedido feito pelo cliente.

forwardRequest

protected void forwardRequest(javax.servlet.http.HttpServletRequest request,
                              javax.servlet.http.HttpServletResponse response,
                              java.lang.String forwardTo)
                       throws java.io.IOException,
                              javax.servlet.ServletException

Redireciona o pedido para uma dada pagina.

Parameters:

request - Pedido feito pelo cliente.

response - Resposta a dar ao cliente.

forwardTo - Url da pagina para onde redirecionar o pedido.

Throws:

java.io.IOException

javax.servlet.ServletException