Java tutorial
/*Copyright (C) 2014 JD Software, Inc. This program 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, see <http://www.gnu.org/licenses/>. */ package com.jd.survey.web.settings; import java.io.UnsupportedEncodingException; import java.security.Principal; import javax.servlet.http.HttpServletRequest; import javax.validation.Valid; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.security.access.annotation.Secured; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.validation.BindingResult; import org.springframework.web.bind.annotation.ExceptionHandler; 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.util.UriUtils; import org.springframework.web.util.WebUtils; import com.jd.survey.GlobalSettings; import com.jd.survey.domain.security.User; import com.jd.survey.service.security.UserService; import com.jd.survey.service.settings.ApplicationSettingsService; import com.jd.survey.service.settings.SurveySettingsService; @RequestMapping("/settings/globalSettings") @Controller public class GlobalSettingsController { private static final Log log = LogFactory.getLog(GlobalSettingsController.class); @Autowired private ApplicationSettingsService applicationSettingsService; @Autowired private UserService userService; @Secured({ "ROLE_ADMIN" }) @RequestMapping(value = "/{id}", produces = "text/html") public String show(@PathVariable("id") Long id, Principal principal, Model uiModel) { log.info("show(): id=" + id); try { User user = userService.user_findByLogin(principal.getName()); if (!user.isAdmin()) { return "accessDenied"; } uiModel.addAttribute("globalSettings", applicationSettingsService.globalSettings_findById(id)); return "settings/globalSettings/show"; } catch (Exception e) { log.error(e.getMessage(), e); throw (new RuntimeException(e)); } } @Secured({ "ROLE_ADMIN" }) @RequestMapping(produces = "text/html") public String list(@RequestParam(value = "page", required = false) Integer page, @RequestParam(value = "size", required = false) Integer size, Principal principal, Model uiModel) { try { if (page != null || size != null) { int sizeNo = size == null ? 10 : size.intValue(); final int firstResult = page == null ? 0 : (page.intValue() - 1) * sizeNo; uiModel.addAttribute("globalSettings", applicationSettingsService.globalSettings_findAll(firstResult, sizeNo)); float nrOfPages = (float) applicationSettingsService.globalSettings_getCount() / sizeNo; uiModel.addAttribute("maxPages", (int) ((nrOfPages > (int) nrOfPages || nrOfPages == 0.0) ? nrOfPages + 1 : nrOfPages)); } else { uiModel.addAttribute("globalSettings", applicationSettingsService.globalSettings_findAll()); } return "settings/globalSettings/list"; } catch (Exception e) { log.error(e.getMessage(), e); throw (new RuntimeException(e)); } } @Secured({ "ROLE_ADMIN" }) @RequestMapping(method = RequestMethod.PUT, produces = "text/html") public String update(@RequestParam(value = "_proceed", required = false) String proceed, @Valid GlobalSettings globalSettings, BindingResult bindingResult, Principal principal, Model uiModel, HttpServletRequest httpServletRequest) { log.info("update(): handles PUT"); try { User user = userService.user_findByLogin(principal.getName()); if (!user.isAdmin()) { log.warn("Unauthorized access to url path " + httpServletRequest.getPathInfo() + " attempted by user login:" + principal.getName() + "from IP:" + httpServletRequest.getLocalAddr()); return "accessDenied"; } if (proceed != null) { if (bindingResult.hasErrors()) { populateEditForm(uiModel, globalSettings, user); return "settings/globalSettings/update"; } uiModel.asMap().clear(); globalSettings = applicationSettingsService.globalSettings_merge(globalSettings); return "redirect:/settings/globalSettings/" + encodeUrlPathSegment(globalSettings.getId().toString(), httpServletRequest); } else { return "redirect:/settings/globalSettings/" + encodeUrlPathSegment(globalSettings.getId().toString(), httpServletRequest); } } catch (Exception e) { log.error(e.getMessage(), e); throw (new RuntimeException(e)); } } @Secured({ "ROLE_ADMIN" }) @RequestMapping(value = "/{id}", params = "form", produces = "text/html") public String updateForm(@PathVariable("id") Long id, Principal principal, Model uiModel) { log.info("updateForm(): id=" + id); try { User user = userService.user_findByLogin(principal.getName()); if (!user.isAdmin()) { //log.warn("Unauthorized access to url path " + httpServletRequest.getPathInfo() + " attempted by user login:" + principal.getName() + "from IP:" + httpServletRequest.getLocalAddr()); return "accessDenied"; } populateEditForm(uiModel, applicationSettingsService.globalSettings_findById(id), user); return "settings/globalSettings/update"; } catch (Exception e) { log.error(e.getMessage(), e); throw (new RuntimeException(e)); } } void populateEditForm(Model uiModel, GlobalSettings globalSettings, User user) { log.info("populateEditForm()"); try { uiModel.addAttribute("globalSettings", globalSettings); } catch (Exception e) { log.error(e.getMessage(), e); throw (new RuntimeException(e)); } } String encodeUrlPathSegment(String pathSegment, HttpServletRequest httpServletRequest) { log.info("encodeUrlPathSegment()"); try { String enc = httpServletRequest.getCharacterEncoding(); if (enc == null) { enc = WebUtils.DEFAULT_CHARACTER_ENCODING; } try { pathSegment = UriUtils.encodePathSegment(pathSegment, enc); } catch (UnsupportedEncodingException uee) { log.error(uee); } return pathSegment; } catch (Exception e) { log.error(e.getMessage(), e); throw (new RuntimeException(e)); } } @ExceptionHandler(RuntimeException.class) public String handleRuntimeException(RuntimeException ex, HttpServletRequest request) { log.error(ex); log.error("redirect to /uncaughtException"); return "redirect:/uncaughtException"; } }