Java tutorial
/** * *************************************************************************** * Copyright (c) 2010 Qcadoo Limited * Project: Qcadoo Framework * Version: 1.2.0 * * This file is part of Qcadoo. * * Qcadoo is free software; you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as published * by the Free Software Foundation; either version 3 of the License, * or (at your option) any later version. * * This program 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * *************************************************************************** */ package com.qcadoo.view.internal.controllers; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.io.IOUtils; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import com.qcadoo.model.api.file.FileService; import com.qcadoo.tenant.api.MultiTenantUtil; @Controller public class FileResolverController { @Autowired private FileService fileService; @RequestMapping(value = "{tenantId:\\d+}/{firstLevel:\\d+}/{secondLevel:\\d+}/{fileName}", method = RequestMethod.GET) public void resolve(final HttpServletRequest request, final HttpServletResponse response, @PathVariable("tenantId") final String tenantId) { String path = fileService.getPathFromUrl(request.getRequestURI()); boolean removeFileAfterProcessing = request.getParameterMap().containsKey("clean"); if (Integer.valueOf(tenantId) != MultiTenantUtil.getCurrentTenantId()) { try { response.sendRedirect("/error.html?code=404"); } catch (IOException e) { throw new IllegalStateException(e.getMessage(), e); } } InputStream input = null; try { input = fileService.getInputStream(path); if (input == null) { response.sendRedirect("/error.html?code=404"); } else { OutputStream output = response.getOutputStream(); int bytes = IOUtils.copy(input, output); response.setHeader("Content-disposition", "inline; filename=" + fileService.getName(path)); response.setContentType(fileService.getContentType(path)); response.setContentLength(bytes); output.flush(); } } catch (IOException e) { IOUtils.closeQuietly(input); throw new IllegalStateException(e.getMessage(), e); } if (removeFileAfterProcessing) { fileService.remove(path); } } }