Java tutorial
/* * Copyright 2002-2016 the original author or authors. * * Licensed under 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 com.devnexus.ting.web.controller.admin; import java.io.IOException; import java.util.Date; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.validation.Valid; import org.apache.commons.io.IOUtils; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.ModelMap; import org.springframework.validation.BindingResult; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.servlet.mvc.support.RedirectAttributes; import com.devnexus.ting.core.service.BusinessService; import com.devnexus.ting.model.FileData; import com.devnexus.ting.model.Organizer; /** * * @author Gunnar Hillert * */ @Controller("adminOrganizerController") public class OrganizerController { @Autowired private BusinessService businessService; @RequestMapping(value = "/s/admin/organizers", method = RequestMethod.GET) public String getOrganizers(ModelMap model, HttpServletRequest request) { final List<Organizer> organizers = businessService.getAllOrganizers(); model.addAttribute("organizers", organizers); return "/admin/manage-organizers"; } @RequestMapping(value = "/s/admin/organizer", method = RequestMethod.GET) public String prepareAddOrganizer(ModelMap model) { Organizer organizerForm = new Organizer(); model.addAttribute("organizer", organizerForm); return "/admin/add-organizer"; } @RequestMapping(value = "/s/admin/organizer/{organizerId}", method = RequestMethod.GET) public String prepareEditOrganizer(@PathVariable("organizerId") Long organizerId, ModelMap model) { final Organizer organizerFromDb = businessService.getOrganizer(organizerId); model.addAttribute("organizer", organizerFromDb); return "/admin/add-organizer"; } @RequestMapping(value = "/s/admin/organizer/{organizerId}", method = RequestMethod.POST) public String editOrganizer(@PathVariable("organizerId") Long organizerId, @RequestParam MultipartFile pictureFile, @Valid Organizer organizerForm, BindingResult result, RedirectAttributes redirectAttributes, HttpServletRequest request) { if (request.getParameter("cancel") != null) { return "redirect:/s/admin/index"; } if (result.hasErrors()) { return "/admin/add-organizer"; } final Organizer organizerFromDb = businessService.getOrganizerWithPicture(organizerId); if (request.getParameter("delete") != null) { businessService.deleteOrganizer(organizerFromDb); //FlashMap.setSuccessMessage("The organizer was deleted successfully."); return "redirect:/s/admin/organizers"; } organizerFromDb.setBio(organizerForm.getBio()); organizerFromDb.setFirstName(organizerForm.getFirstName()); organizerFromDb.setLastName(organizerForm.getLastName()); organizerFromDb.setCompany(organizerForm.getCompany()); organizerFromDb.setGooglePlusId(organizerForm.getGooglePlusId()); organizerFromDb.setLinkedInId(organizerForm.getLinkedInId()); organizerFromDb.setTwitterId(organizerForm.getTwitterId()); organizerFromDb.setLanyrdId(organizerForm.getLanyrdId()); organizerFromDb.setGithubId(organizerForm.getGithubId()); organizerFromDb.setSortOrder(organizerForm.getSortOrder()); if (pictureFile != null && pictureFile.getSize() > 0) { final FileData pictureData; if (organizerFromDb.getPicture() == null) { pictureData = new FileData(); } else { pictureData = organizerFromDb.getPicture(); } try { pictureData.getId(); pictureData.setFileData(IOUtils.toByteArray(pictureFile.getInputStream())); pictureData.setFileSize(pictureFile.getSize()); pictureData.setFileModified(new Date()); pictureData.setName(pictureFile.getOriginalFilename()); } catch (IOException e) { throw new IllegalStateException( "Error while processing image for speaker " + organizerForm.getFirstLastName(), e); } organizerForm.setPicture(pictureData); String message = "File '" + organizerForm.getPicture().getName() + "' uploaded successfully"; redirectAttributes.addFlashAttribute("successMessage", message); } businessService.saveOrganizer(organizerFromDb); redirectAttributes.addFlashAttribute("successMessage", "The organizer was edited successfully."); return "redirect:/s/admin/organizers"; } @RequestMapping(value = "/s/admin/organizer", method = RequestMethod.POST) public String addOrganizer(@RequestParam MultipartFile pictureFile, @Valid Organizer organizerForm, BindingResult result, HttpServletRequest request, RedirectAttributes redirectAttributes) { if (request.getParameter("cancel") != null) { return "redirect:/s/admin/organizers"; } if (result.hasErrors()) { return "/admin/add-organizer"; } if (pictureFile != null && pictureFile.getSize() > 0) { final FileData pictureData = new FileData(); try { pictureData.setFileData(IOUtils.toByteArray(pictureFile.getInputStream())); pictureData.setFileSize(pictureFile.getSize()); pictureData.setFileModified(new Date()); pictureData.setName(pictureFile.getOriginalFilename()); } catch (IOException e) { throw new IllegalStateException( "Error while processing image for speaker " + organizerForm.getFirstLastName(), e); } organizerForm.setPicture(pictureData); String message = "File '" + organizerForm.getPicture().getName() + "' uploaded successfully"; redirectAttributes.addFlashAttribute("successMessage", message); } Organizer savedOrganizer = businessService.saveOrganizer(organizerForm); redirectAttributes.addFlashAttribute("successMessage", String.format("The organizer '%s' was added successfully.", savedOrganizer.getFirstLastName())); return "redirect:/s/admin/organizers"; } }