RequestNoCache xref

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    1   /*
    2    * $Id: RequestNoCache.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.struts.chain.commands.AbstractRequestNoCache;
    24  import org.apache.struts.chain.contexts.ActionContext;
    25  import org.apache.struts.chain.contexts.ServletActionContext;
    26
    27  import javax.servlet.http.HttpServletResponse;
    28
    29  /**
    30   * <p>Check to see if the controller is configured to prevent caching, and if
    31   * so, set the no cache HTTP response headers.</p>
    32   *
    33   * @version $Rev: 471754 $ $Date: 2005-05-07 12:11:38 -0400 (Sat, 07 May 2005)
    34   *          $
    35   */
    36  public class RequestNoCache extends AbstractRequestNoCache {
    37      // ------------------------------------------------------- Protected Methods
    38      protected void requestNoCache(ActionContext context) {
    39          ServletActionContext sacontext = (ServletActionContext) context;
    40          HttpServletResponse response = sacontext.getResponse();
    41
    42          response.setHeader("Pragma", "No-cache");
    43          response.setHeader("Cache-Control", "no-cache,no-store,max-age=0");
    44          response.setDateHeader("Expires", 1);
    45      }
    46  }