ExceptionHandler xref

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    1   /*
    2    * $Id: ExceptionHandler.java 471754 2006-11-06 14:55:09Z husted $
    3    *
    4    * Licensed to the Apache Software Foundation (ASF) under one
    5    * or more contributor license agreements.  See the NOTICE file
    6    * distributed with this work for additional information
    7    * regarding copyright ownership.  The ASF licenses this file
    8    * to you under the Apache License, Version 2.0 (the
    9    * "License"); you may not use this file except in compliance
    10   * with the License.  You may obtain a copy of the License at
    11   *
    12   *  http://www.apache.org/licenses/LICENSE-2.0
    13   *
    14   * Unless required by applicable law or agreed to in writing,
    15   * software distributed under the License is distributed on an
    16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    17   * KIND, either express or implied.  See the License for the
    18   * specific language governing permissions and limitations
    19   * under the License.
    20   */
    21  package org.apache.struts.chain.commands.servlet;
    22
    23  import org.apache.commons.logging.Log;
    24  import org.apache.commons.logging.LogFactory;
    25  import org.apache.struts.action.ActionForm;
    26  import org.apache.struts.action.ActionMapping;
    27  import org.apache.struts.chain.commands.AbstractExceptionHandler;
    28  import org.apache.struts.chain.commands.util.ClassUtils;
    29  import org.apache.struts.chain.contexts.ActionContext;
    30  import org.apache.struts.chain.contexts.ServletActionContext;
    31  import org.apache.struts.config.ActionConfig;
    32  import org.apache.struts.config.ExceptionConfig;
    33  import org.apache.struts.config.ForwardConfig;
    34  import org.apache.struts.config.ModuleConfig;
    35
    36  import javax.servlet.http.HttpServletRequest;
    37  import javax.servlet.http.HttpServletResponse;
    38
    39  /**
    40   * <p>Handle the specified exception.</p>
    41   *
    42   * @version $Rev: 471754 $ $Date: 2005-05-07 12:11:38 -0400 (Sat, 07 May 2005)
    43   *          $
    44   */
    45  public class ExceptionHandler extends AbstractExceptionHandler {
    46      // ------------------------------------------------------ Instance Variables
    47      private static final Log log = LogFactory.getLog(ExceptionHandler.class);
    48
    49      // ------------------------------------------------------- Protected Methods
    50      protected ForwardConfig handle(ActionContext context, Exception exception,
    51          ExceptionConfig exceptionConfig, ActionConfig actionConfig,
    52          ModuleConfig moduleConfig)
    53          throws Exception {
    54          // Look up the remaining properties needed for this handler
    55          ServletActionContext sacontext = (ServletActionContext) context;
    56          ActionForm actionForm = (ActionForm) sacontext.getActionForm();
    57          HttpServletRequest request = sacontext.getRequest();
    58          HttpServletResponse response = sacontext.getResponse();
    59
    60          // Handle this exception
    61          org.apache.struts.action.ExceptionHandler handler =
    62              (org.apache.struts.action.ExceptionHandler) ClassUtils
    63              .getApplicationInstance(exceptionConfig.getHandler());
    64
    65          return (handler.execute(exception, exceptionConfig,
    66              (ActionMapping) actionConfig, actionForm, request, response));
    67      }
    68  }