net.sf.jasperreports.web.servlets.AbstractServlet Maven / Gradle / Ivy
/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2014 TIBCO Software Inc. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see .
*/
package net.sf.jasperreports.web.servlets;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletResponse;
import net.sf.jasperreports.engine.JRConstants;
import net.sf.jasperreports.engine.JasperReportsContext;
/**
* @author Teodor Danciu ([email protected])
*/
public class AbstractServlet extends HttpServlet
{
private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;
private static JasperReportsContext jasperReportsContext;
protected static final String JSON_CONTENT_TYPE = "application/json; charset=UTF-8";
protected static final String HTML_CONTENT_TYPE = "text/html; charset=UTF-8";
protected static final String JSON_ACCEPT_HEADER = "application/json";
protected static final String HTML_ACCEPT_HEADER = "text/html";
/**
*
*/
public JasperReportsContext getJasperReportsContext()
{
return jasperReportsContext;
}
/**
*
*/
public static void setJasperReportsContext(JasperReportsContext jrctx)
{
jasperReportsContext = jrctx;
}
protected void setNoExpire(HttpServletResponse response) {
// Set to expire far in the past.
response.setHeader("Expires", "Sat, 6 May 1995 12:00:00 GMT");
// Set standard HTTP/1.1 no-cache headers.
response.setHeader("Cache-Control", "no-store, no-cache, must-revalidate");
// Set IE extended HTTP/1.1 no-cache headers (use addHeader).
response.addHeader("Cache-Control", "post-check=0, pre-check=0");
// Set standard HTTP/1.0 no-cache header.
response.setHeader("Pragma", "no-cache");
}
}