/* 
    P/P   *  Method: net.sourceforge.pebble.web.action.ErrorAction__static_init
          * 
          *  Postconditions:
          *    init'ed(log)
          */
     1  /*
     2   * Copyright (c) 2003-2006, Simon Brown
     3   * All rights reserved.
     4   *
     5   * Redistribution and use in source and binary forms, with or without
     6   * modification, are permitted provided that the following conditions are met:
     7   *
     8   *   - Redistributions of source code must retain the above copyright
     9   *     notice, this list of conditions and the following disclaimer.
    10   *
    11   *   - Redistributions in binary form must reproduce the above copyright
    12   *     notice, this list of conditions and the following disclaimer in
    13   *     the documentation and/or other materials provided with the
    14   *     distribution.
    15   *
    16   *   - Neither the name of Pebble nor the names of its contributors may
    17   *     be used to endorse or promote products derived from this software
    18   *     without specific prior written permission.
    19   *
    20   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    21   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    22   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    23   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
    24   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    25   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    26   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    27   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    28   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    29   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    30   * POSSIBILITY OF SUCH DAMAGE.
    31   */
    32  package net.sourceforge.pebble.web.action;
    33  
    34  import net.sourceforge.pebble.util.ExceptionUtils;
    35  import net.sourceforge.pebble.web.view.View;
    36  import net.sourceforge.pebble.web.view.impl.ErrorView;
    37  import org.apache.commons.logging.Log;
    38  import org.apache.commons.logging.LogFactory;
    39  
         /* 
    P/P   *  Method: void net.sourceforge.pebble.web.action.ErrorAction()
          */
    40  import javax.servlet.ServletException;
    41  import javax.servlet.http.HttpServletRequest;
    42  import javax.servlet.http.HttpServletResponse;
    43  import java.util.Enumeration;
    44  
    45  /**
    46   * Redirects the user to a error page.
    47   *
    48   * @author    Simon Brown
    49   */
    50  public class ErrorAction extends Action {
    51  
    52    /** the log used by this class */
    53    private static final Log log = LogFactory.getLog(ErrorAction.class);
    54  
    55    /**
    56     * Peforms the processing associated with this action.
    57     *
    58     * @param request  the HttpServletRequest instance
    59     * @param response the HttpServletResponse instance
    60     * @return the name of the next view
    61     */
    62    public View process(HttpServletRequest request, HttpServletResponse response) throws ServletException {
    63      Exception e = (Exception)request.getAttribute("exception");
    64      if (e != null) {
    65        log.error("Request URL = " + request.getRequestURL());
    66        log.error("Request URI = " + request.getRequestURI());
    67        log.error("Query string = " + request.getQueryString());
    68        Enumeration en = request.getHeaderNames();
    69        while (en.hasMoreElements()) {
    70          String headerName = (String)en.nextElement();
    71          log.error(headerName + " = " + request.getHeader("headerName"));
    72        }
    73        log.error("Parameters :");
    74        java.util.Enumeration names = request.getParameterNames();
    75        while (names.hasMoreElements()) {
    76          String name = (String)names.nextElement();
    77          log.error(" " + name + " = " + request.getParameter(name));
    78        }
    79  
    80        log.error("Exception encountered", e);
    81  
    82        getModel().put("stackTrace", ExceptionUtils.getStackTraceAsString(e));
    83      }
    84  
    85      return new ErrorView();
    86    }
    87  
    88  }