openwfe.org.misc.WebUtils Maven / Gradle / Ivy
/*
* Copyright (c) 2001-2006, John Mettraux, OpenWFE.org
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* . Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* . Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* . Neither the name of the "OpenWFE" nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* $Id: WebUtils.java 2713 2006-06-01 14:38:45Z jmettraux $
*/
//
// WebUtils.java
//
// [email protected]
//
// generated with
// jtmpl 1.1.00 16.08.2003 John Mettraux ([email protected])
//
package openwfe.org.misc;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.RequestDispatcher;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Some helper methods
*
* CVS Info :
*
$Author: jmettraux $
*
$Id: WebUtils.java 2713 2006-06-01 14:38:45Z jmettraux $
*
* @author [email protected]
*/
public abstract class WebUtils
{
/*
private final static org.apache.log4j.Logger log = org.apache.log4j.Logger
.getLogger(WebUtils.class.getName());
*/
//
// METHODS
/**
* Logs through the servlet container logging facility.
* If no HttpSession session has been started, nothing will get logged.
*/
public static void log
(final HttpServletRequest req, final String message)
{
log(req, message, null);
}
/**
* Logs through the servlet container logging facility.
* If no HttpSession session has been started, nothing will get logged.
*/
public static void log
(final HttpServletRequest req, final String message, final Throwable t)
{
final HttpSession hs = req.getSession();
if (hs == null) return;
log(hs, message, t);
}
/**
* Logs through the servlet container logging facility.
*/
public static void log
(final HttpSession ses, final String message)
{
log(ses, message, null);
}
/**
* Logs through the servlet container logging facility.
*/
public static void log
(final HttpSession ses, final String message, final Throwable t)
{
if (t == null)
ses.getServletContext().log(message);
else
ses.getServletContext().log(message, t);
}
/**
* forwards a web request to a given URL
*/
public static void forward
(HttpServletRequest req, HttpServletResponse res, String url)
throws
java.io.IOException, ServletException
{
RequestDispatcher rd = req.getRequestDispatcher(url);
rd.forward(req, res);
}
/**
* Includes a file in a web page (its writer)
*/
public static void include (PrintWriter out, String fileName)
//throws java.io.IOException
{
try
{
java.io.BufferedReader br =
new java.io.BufferedReader(new java.io.FileReader(fileName));
while (true)
{
String line = br.readLine();
if (line == null) break;
out.println(line);
}
br.close();
}
catch (final Exception e)
{
final java.io.File f = new java.io.File(fileName);
out.println
("Failed to include file '"+
f.getAbsolutePath()+"'");
out.println("
"+e);
out.println("");
}
}
/**
* Includes a URL in a web page (its writer)
*/
public static void include (PrintWriter out, java.net.URL url)
{
try
{
java.io.BufferedReader br = new java.io.BufferedReader
(new java.io.InputStreamReader
(url.openConnection().getInputStream()));
while (true)
{
String line = br.readLine();
if (line == null) break;
out.println(line);
}
br.close();
}
catch (Exception e)
{
out.println("Failed to include URL "+url);
out.println("
"+e);
out.println("");
}
}
}