Package org.silverpeas.core.web.mvc.webcomponent

Class SilverpeasHttpServlet

java.lang.Object

javax.servlet.GenericServlet

javax.servlet.http.HttpServlet

org.silverpeas.core.web.mvc.webcomponent.SilverpeasHttpServlet

All Implemented Interfaces:

Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig

Direct Known Subclasses:

AuthenticationServlet, ChatUserSelectionServlet, LoginServlet, SilverpeasAuthenticatedHttpServlet, VisioServlet

public class SilverpeasHttpServlet
extends javax.servlet.http.HttpServlet

This servlet is the parent one of Silverpeas application. It provides common HTTP servlet tools.

Author:

Yohann Chastagnier

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	SilverpeasHttpServlet.HttpError	Internal exception class management
protected static class	SilverpeasHttpServlet.UserSessionStatus

Constructor Summary

Constructors

Constructor	Description
SilverpeasHttpServlet()

Method Summary

Modifier and Type	Method	Description
protected SilverpeasHttpServlet.UserSessionStatus	existOpenedUserSession(javax.servlet.http.HttpServletRequest request)	Indicates if it exists an opened user session.
protected SilverpeasHttpServlet.HttpError	forbidden(String msg)
protected SilverpeasHttpServlet.HttpError	notFound(String msg)
protected SilverpeasHttpServlet.HttpError	preconditionFailed(String msg)
protected void	redirectOrForwardService(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, String destination)	Handle the sendRedirect or the forward.
protected void	sendError(javax.servlet.http.HttpServletResponse response, int status)	Sends an HTTP error to the client with the specified error code.
protected void	sendError(javax.servlet.http.HttpServletResponse response, int status, String message)	Sends an HTTP error to the client with the specified error code and error message.
protected void	service(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response)
protected void	throwHttpForbiddenError()	The HTTP server understood the request, but is refusing to fulfill it.
protected void	throwHttpForbiddenError(String message)	The HTTP server understood the request, but is refusing to fulfill it.
protected void	throwHttpNotFoundError()	The server has not found anything matching the requested address (URI) ( not found ).
protected void	throwHttpNotFoundError(String message)	The server has not found anything matching the requested address (URI) ( not found ).
protected void	throwHttpPreconditionFailedError()	The precondition given in one or more of the request-header fields evaluated to false when it was tested on the server.
protected void	throwHttpPreconditionFailedError(String message)	The precondition given in one or more of the request-header fields evaluated to false when it was tested on the server.

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

SilverpeasHttpServlet

public SilverpeasHttpServlet()

Method Detail

service

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

Overrides:

service in class javax.servlet.http.HttpServlet

Throws:

javax.servlet.ServletException

IOException

existOpenedUserSession

protected SilverpeasHttpServlet.UserSessionStatus existOpenedUserSession(javax.servlet.http.HttpServletRequest request)

Indicates if it exists an opened user session.

Parameters:

request - the current request.

Returns:

true if it exists an opened user session, false otherwise.

redirectOrForwardService

protected void redirectOrForwardService(javax.servlet.http.HttpServletRequest request,
                                        javax.servlet.http.HttpServletResponse response,
                                        String destination)
                                 throws javax.servlet.ServletException,
                                        IOException

Handle the sendRedirect or the forward.

Throws:

javax.servlet.ServletException - on redirect or forward error.

IOException - on redirect error.

throwHttpPreconditionFailedError

protected void throwHttpPreconditionFailedError()

The precondition given in one or more of the request-header fields evaluated to false when it was tested on the server. This response code allows the client to place preconditions on the current resource metainformation (header field data) and thus prevent the requested method from being applied to a resource other than the one intended.

throwHttpForbiddenError

protected void throwHttpForbiddenError()

The HTTP server understood the request, but is refusing to fulfill it. This status code is commonly used when the server does not wish to reveal exactly why the request has been refused, or when no other response is applicable (for example the server is an Intranet and only the LAN machines are authorized to connect).

throwHttpNotFoundError

protected void throwHttpNotFoundError()

The server has not found anything matching the requested address (URI) ( not found ). This means the URL you have typed or cliked on is wrong or obsolete and does not match any document existing on the server (you may try to gradualy remove the URL components from the right to the left to eventualy retrieve an existing path).

throwHttpPreconditionFailedError

protected void throwHttpPreconditionFailedError(String message)

The precondition given in one or more of the request-header fields evaluated to false when it was tested on the server. This response code allows the client to place preconditions on the current resource metainformation (header field data) and thus prevent the requested method from being applied to a resource other than the one intended.

throwHttpForbiddenError

protected void throwHttpForbiddenError(String message)

The HTTP server understood the request, but is refusing to fulfill it. This status code is commonly used when the server does not wish to reveal exactly why the request has been refused, or when no other response is applicable (for example the server is an Intranet and only the LAN machines are authorized to connect).

throwHttpNotFoundError

protected void throwHttpNotFoundError(String message)

The server has not found anything matching the requested address (URI) ( not found ). This means the URL you have typed or cliked on is wrong or obsolete and does not match any document existing on the server (you may try to gradualy remove the URL components from the right to the left to eventualy retrieve an existing path).

sendError

protected void sendError(javax.servlet.http.HttpServletResponse response,
                         int status)

Sends an HTTP error to the client with the specified error code. Once the error is sent, the HTTP response is consumed and it cannot be used anymore; so the servlet service should returns directly after invoking this method.

Parameters:

response - the HTTP response

status - the error status code

sendError

protected void sendError(javax.servlet.http.HttpServletResponse response,
                         int status,
                         String message)

Sends an HTTP error to the client with the specified error code and error message. Once the error is sent, the HTTP response is consumed and it cannot be used anymore; so the servlet service should returns directly after invoking this method.

Parameters:

response - the HTTP response

status - the error status code

message - the message to pass in the response and giving details about the error.

preconditionFailed

protected SilverpeasHttpServlet.HttpError preconditionFailed(String msg)

forbidden

protected SilverpeasHttpServlet.HttpError forbidden(String msg)

notFound

protected SilverpeasHttpServlet.HttpError notFound(String msg)