01: /*
02: * (C) Copyright 2006 Nabh Information Systems, Inc.
03: *
04: * All copyright notices regarding Nabh's products MUST remain
05: * intact in the scripts and in the outputted HTML.
06: * This program is free software; you can redistribute it and/or
07: * modify it under the terms of the GNU Lesser General Public License
08: * as published by the Free Software Foundation; either version 2.1
09: * of the License, or (at your option) any later version.
10: *
11: * This program is distributed in the hope that it will be useful,
12: * but WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14: * GNU Lesser General Public License for more details.
15: *
16: * You should have received a copy of the GNU Lesser General Public License
17: * along with this program; if not, write to the Free Software
18: * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19: *
20: */
21: package com.nabhinc.util;
22:
23: import javax.servlet.http.HttpServletRequest;
24: import javax.servlet.http.HttpServletResponse;
25:
26: /**
27: *
28: *
29: * @author Padmanabh Dabke
30: * (c) 2006 Nabh Information Systems, Inc. All Rights Reserved.
31: */
32: public class ServletUtil {
33:
34: public static void setNoCacheHeaders(HttpServletRequest request,
35: HttpServletResponse response) {
36: //disable caching
37: response.setHeader("Pragma", "no-cache");
38: response.setHeader("Cache-Control", "no-cache");
39: response.setHeader("Cache-Content", "no-cache");
40: if (request.getHeader("user-agent").toLowerCase().indexOf(
41: "msie") != -1) {
42: response.setDateHeader("Expires", -1);
43: } else {
44: response.setDateHeader("Expires", 0);
45: }
46: }
47:
48: }
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