Java tutorial
/** * Copyright 2002 Instituto Superior Tcnico * * This file is part of FenixEdu Academic. * * FenixEdu Academic 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. * * FenixEdu Academic 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 FenixEdu Academic. If not, see <http://www.gnu.org/licenses/>. */ package org.fenixedu.academic.ui.struts.action.operator; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import org.apache.struts.action.ActionMessage; import org.apache.struts.action.ActionMessages; import org.fenixedu.academic.domain.Person; import org.fenixedu.academic.domain.PhotoType; import org.fenixedu.academic.domain.Photograph; import org.fenixedu.academic.domain.exceptions.DomainException; import org.fenixedu.academic.dto.person.PhotographUploadBean; import org.fenixedu.academic.dto.person.PhotographUploadBean.UnableToProcessTheImage; import org.fenixedu.academic.ui.struts.action.base.FenixDispatchAction; import org.fenixedu.academic.util.Bundle; import org.fenixedu.academic.util.ContentType; import org.fenixedu.bennu.core.i18n.BundleUtil; import org.fenixedu.bennu.struts.annotations.Forward; import org.fenixedu.bennu.struts.annotations.Forwards; import org.fenixedu.bennu.struts.annotations.Mapping; import org.fenixedu.bennu.struts.portal.EntryPoint; import org.fenixedu.bennu.struts.portal.StrutsFunctionality; import org.joda.time.DateTime; import pt.ist.fenixWebFramework.renderers.utils.RenderUtils; import pt.ist.fenixframework.Atomic; import com.google.common.io.ByteStreams; @StrutsFunctionality(app = OperatorApplication.class, path = "submit-photo", titleKey = "link.operator.submitPhoto") @Mapping(module = "operator", path = "/submitPhoto") @Forwards(value = { @Forward(name = "chooseFile", path = "/operator/photo/submitPhoto_bd.jsp") }) public class SubmitPhotoAction extends FenixDispatchAction { private static final int MAX_RAW_SIZE = 1000000; // 2M @EntryPoint public ActionForward preparePhotoUpload(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { request.setAttribute("photo", new PhotographUploadBean()); request.setAttribute("phroperCaption", BundleUtil.getString(Bundle.APPLICATION, "phroper.caption")); request.setAttribute("phroperSubCaption", BundleUtil.getString(Bundle.APPLICATION, "phroper.subCaption")); request.setAttribute("phroperButtonCaption", BundleUtil.getString(Bundle.APPLICATION, "phroper.buttonCaption")); request.setAttribute("phroperLoadingCaption", BundleUtil.getString(Bundle.APPLICATION, "phroper.loadingCaption")); request.setAttribute("buttonClean", BundleUtil.getString(Bundle.APPLICATION, "button.clean")); request.setAttribute("buttonRevert", BundleUtil.getString(Bundle.APPLICATION, "button.phroper.revert")); return mapping.findForward("chooseFile"); } public ActionForward photoUpload(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request, HttpServletResponse response) throws Exception { PhotographUploadBean photo = getRenderedObject(); RenderUtils.invalidateViewState(); String base64Thumbnail = request.getParameter("encodedThumbnail"); String base64Image = request.getParameter("encodedPicture"); if (base64Image != null && base64Thumbnail != null) { DateTime now = new DateTime(); photo.setFilename("mylovelypic_" + now.getYear() + now.getMonthOfYear() + now.getDayOfMonth() + now.getHourOfDay() + now.getMinuteOfDay() + now.getSecondOfMinute() + ".png"); photo.setBase64RawContent(base64Image.split(",")[1]); photo.setBase64RawThumbnail(base64Thumbnail.split(",")[1]); photo.setContentType(base64Image.split(",")[0].split(":")[1].split(";")[0]); } ActionMessages actionMessages = new ActionMessages(); try (InputStream stream = photo.getFileInputStream()) { if (stream == null) { actionMessages.add("error", new ActionMessage("errors.fileRequired")); saveMessages(request, actionMessages); return preparePhotoUpload(mapping, actionForm, request, response); } } if (ContentType.getContentType(photo.getContentType()) == null) { actionMessages.add("error", new ActionMessage("errors.unsupportedFile")); saveMessages(request, actionMessages); return preparePhotoUpload(mapping, actionForm, request, response); } if (photo.getRawSize() > MAX_RAW_SIZE) { actionMessages.add("error", new ActionMessage("errors.fileTooLarge")); saveMessages(request, actionMessages); photo.deleteTemporaryFiles(); return preparePhotoUpload(mapping, actionForm, request, response); } try { photo.processImage(); } catch (UnableToProcessTheImage e) { actionMessages.add("error", new ActionMessage("errors.unableToProcessImage")); saveMessages(request, actionMessages); photo.deleteTemporaryFiles(); return preparePhotoUpload(mapping, actionForm, request, response); } try { updatePersonPhoto(photo); } catch (Exception e) { actionMessages.add("error", new ActionMessage("errors.unableToSaveImage")); saveMessages(request, actionMessages); photo.deleteTemporaryFiles(); return preparePhotoUpload(mapping, actionForm, request, response); } actionMessages.add("success", new ActionMessage("label.operator.submit.ok", "")); saveMessages(request, actionMessages); return preparePhotoUpload(mapping, actionForm, request, response); } @Atomic private void updatePersonPhoto(final PhotographUploadBean photo) throws FileNotFoundException, IOException { if (photo.getUsername() == null) { throw new DomainException("error.operatorPhotoUpload.null.username"); } final Person person = Person.readPersonByUsername(photo.getUsername()); if (person == null) { throw new DomainException("error.operatorPhotoUpload.invalid.username"); } try (InputStream stream = photo.getFileInputStream()) { person.setPersonalPhoto(new Photograph(PhotoType.INSTITUTIONAL, ContentType.getContentType(photo.getContentType()), ByteStreams.toByteArray(stream))); } } }