Java tutorial
/* * Copyright 2002-2013 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 org.nishkarma.petclinic.controller; import java.net.URLEncoder; import java.util.Collection; import java.util.Locale; import java.util.Map; import javax.validation.Valid; import org.apache.commons.lang3.exception.ExceptionUtils; import org.nishkarma.common.exception.NishkarmaException; import org.nishkarma.common.paging.model.PagingUtil; import org.nishkarma.common.util.BindingResultDebug; import org.nishkarma.common.util.NishkarmaLocaleUtil; import org.nishkarma.common.util.NishkarmaMessageSource; import org.nishkarma.petclinic.model.FindOwnerParam; import org.nishkarma.petclinic.model.Owners; import org.nishkarma.petclinic.service.ClinicService; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.validation.BindingResult; import org.springframework.web.bind.WebDataBinder; import org.springframework.web.bind.annotation.InitBinder; import org.springframework.web.bind.annotation.ModelAttribute; 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.SessionAttributes; import org.springframework.web.bind.support.SessionStatus; import org.springframework.web.servlet.ModelAndView; /** * @author Juergen Hoeller * @author Ken Krebs * @author Arjen Poutsma * @author Michael Isvy */ @Controller @SessionAttributes(types = Owners.class) public class OwnerController { Logger logger = LoggerFactory.getLogger(OwnerController.class); /* * @Autowired private MessageSource messageSource; */ @Autowired private ClinicService clinicService; @InitBinder public void setAllowedFields(WebDataBinder dataBinder) { dataBinder.setDisallowedFields("id"); } @RequestMapping(value = "/{internationalPath:[a-zA-Z]{2,10}\\-[a-zA-Z]{2,10}}/owners/new", method = RequestMethod.GET) public String initCreationForm(Map<String, Object> model) { Owners owner = new Owners(); model.put("owner", owner); return "owners/createOrUpdateOwnerForm"; } @RequestMapping(value = "/{internationalPath:[a-zA-Z]{2,10}\\-[a-zA-Z]{2,10}}/owners/new", method = RequestMethod.POST) public String processCreationForm(@Valid @ModelAttribute("owner") Owners owner, BindingResult result, SessionStatus status) { int ownerId = 0; try { if (result.hasErrors()) { BindingResultDebug.print(result); return "owners/createOrUpdateOwnerForm"; } clinicService.saveOwner(owner); status.setComplete(); ownerId = owner.getId(); } catch (Exception e) { logger.error(ExceptionUtils.getStackTrace(e)); throw new NishkarmaException( NishkarmaMessageSource.getMessage("exception_message", NishkarmaLocaleUtil.resolveLocale())); } return "redirect:/{internationalPath}/owners/" + ownerId; } @RequestMapping(value = "/{internationalPath:[a-zA-Z]{2,10}\\-[a-zA-Z]{2,10}}/owners/find", method = RequestMethod.GET) public String initFindForm(Map<String, Object> model) { /* Locale locale = NishkarmaLocaleUtil.resolveLocale(); if (locale != null) { logger.debug("locale.getCountry()=" + locale.getCountry()); logger.debug("locale.getDisplayCountry()=" + locale.getDisplayCountry()); logger.debug("locale.getDisplayLanguage()=" + locale.getDisplayLanguage()); logger.debug("locale.getDisplayName()=" + locale.getDisplayName()); logger.debug("locale.getLanguage()=" + locale.getLanguage()); logger.debug("locale.toLanguageTag()=" + locale.toLanguageTag()); logger.debug("locale.toString()=" + locale.toString()); } */ FindOwnerParam findOwnerParam = new FindOwnerParam(); model.put("findOwnerParam", findOwnerParam); return "owners/findOwners"; } @RequestMapping(value = "/{internationalPath:[a-zA-Z]{2,10}\\-[a-zA-Z]{2,10}}/owners", method = RequestMethod.GET) public String processFindForm(FindOwnerParam findOwnerParam, BindingResult result, Map<String, Object> model) { try { // allow parameterless GET request for /owners to return all records if (findOwnerParam.getLastName() == null) { findOwnerParam.setLastName(""); // empty string signifies // broadest possible search } logger.debug("findOwnerParam.getPage_page()=" + findOwnerParam.getPage_page()); logger.debug("findOwnerParam.getPage_size()=" + findOwnerParam.getPage_size()); findOwnerParam.makePageQuery(); // find owners by last name Collection<Owners> results = this.clinicService.findOwnerByLastName(findOwnerParam); long findCount = this.clinicService.findOwnerByLastNameCount(findOwnerParam); findOwnerParam.setTotalPages(PagingUtil.getTotalPages(findOwnerParam.getPage_size(), findCount)); if (results.size() < 1) { // no owners found result.rejectValue("lastName", "notFound", "not found"); BindingResultDebug.print(result); return "owners/findOwners"; } if (results.size() > 1) { // multiple owners found model.put("selections", results); model.put("findOwnerParam", findOwnerParam); String pageUrl = "owners.html?lastName=" + (URLEncoder.encode(findOwnerParam.getLastName(), "UTF-8")) + "&page_page="; model.put("pageUrl", pageUrl); return "owners/ownersList"; } else { // 1 owner found Owners owner = results.iterator().next(); return "redirect:/{internationalPath}/owners/" + owner.getId(); } } catch (Exception e) { logger.error(ExceptionUtils.getStackTrace(e)); throw new NishkarmaException( NishkarmaMessageSource.getMessage("exception_message", NishkarmaLocaleUtil.resolveLocale())); } } @RequestMapping(value = "/{internationalPath:[a-zA-Z]{2,10}\\-[a-zA-Z]{2,10}}/owners/{ownerId}/edit", method = RequestMethod.GET) public String initUpdateOwnerForm(@PathVariable("ownerId") int ownerId, Model model) { try { Owners owner = this.clinicService.findOwnerById(ownerId); model.addAttribute(owner); } catch (Exception e) { logger.error(ExceptionUtils.getStackTrace(e)); throw new NishkarmaException( NishkarmaMessageSource.getMessage("exception_message", NishkarmaLocaleUtil.resolveLocale())); } return "owners/createOrUpdateOwnerForm"; } @RequestMapping(value = "/{internationalPath:[a-zA-Z]{2,10}\\-[a-zA-Z]{2,10}}/owners/{ownerId}/edit", method = RequestMethod.POST) public String processUpdateOwnerForm(@Valid Owners owner, BindingResult result, SessionStatus status) { try { if (result.hasErrors()) { return "owners/createOrUpdateOwnerForm"; } this.clinicService.saveOwner(owner); status.setComplete(); } catch (Exception e) { logger.error(ExceptionUtils.getStackTrace(e)); throw new NishkarmaException( NishkarmaMessageSource.getMessage("exception_message", NishkarmaLocaleUtil.resolveLocale())); } return "redirect:/{internationalPath}/owners/{ownerId}"; } /** * Custom handler for displaying an owner. * * @param ownerId * the ID of the owner to display * @return a ModelMap with the model attributes for the view */ @RequestMapping("/{internationalPath:[a-zA-Z]{2,10}\\-[a-zA-Z]{2,10}}/owners/{ownerId}") public ModelAndView showOwner(@PathVariable("ownerId") int ownerId) { ModelAndView mav = null; try { mav = new ModelAndView("owners/ownerDetails"); Owners owner = this.clinicService.findOwnerById(ownerId); mav.addObject("owner", owner); } catch (Exception e) { logger.error(ExceptionUtils.getStackTrace(e)); throw new NishkarmaException( NishkarmaMessageSource.getMessage("exception_message", NishkarmaLocaleUtil.resolveLocale())); } return mav; } }