Java tutorial
/** * myJerry | Evenstar * Copyright (C) 2010 myJerry Development Team * http://www.myjerry.org * * The file is licensed under the the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * * See the License for the specific language governing permissions and * limitations under the License. * */ package org.myjerry.util; import java.io.IOException; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletResponse; import org.springframework.web.servlet.ModelAndView; public class ResponseUtil { public static final ModelAndView sendFileToDownload(HttpServletResponse response, String fileToDownload, String fileName, String contentType, boolean isHttp11) throws IOException { response.reset(); setNoCache(response, isHttp11); response.setHeader("Content-Disposition", "attachment; filename=" + fileName); response.setContentType(contentType); ServletOutputStream out; out = response.getOutputStream(); out.print(fileToDownload); out.flush(); out.close(); return null; } public static final void setNoCache(HttpServletResponse response, boolean isHttp11) { if (isHttp11) { response.setHeader("Cache-Control", "no-cache"); } else { response.setHeader("Pragma", "no-cache"); response.addDateHeader("Expires", 0L); response.setHeader("Cache-Control", "no-store"); } } }