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 java.util.SortedSet; import javax.servlet.http.HttpServletRequest; 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.domain.security.User; import com.jd.survey.domain.settings.Question; import com.jd.survey.domain.settings.QuestionOption; import com.jd.survey.domain.settings.SurveyDefinition; import com.jd.survey.service.security.SecurityService; import com.jd.survey.service.security.UserService; import com.jd.survey.service.settings.SurveySettingsService; @RequestMapping("/settings/questionOptions") @Controller public class QuestionOptionController { private static final Log log = LogFactory.getLog(QuestionOptionController.class); private static final int EMPTY_OPTIONS_COUNT = 10; @Autowired private SurveySettingsService surveySettingsService; @Autowired private UserService userService; @Autowired private SecurityService securityService; @Secured({ "ROLE_ADMIN", "ROLE_SURVEY_ADMIN" }) @RequestMapping(value = "/{id}", params = "form", produces = "text/html") public String updateForm(@PathVariable("id") Long questionId, Principal principal, Model uiModel) { log.info("updateForm(): questionId=" + questionId); try { Question question = surveySettingsService.question_findById(questionId); SortedSet<QuestionOption> options = question.getOptions(); for (int i = 1; i <= EMPTY_OPTIONS_COUNT; i++) { options.add(new QuestionOption(question, (short) (question.getOptions().size() + i))); } question.setOptions(options); uiModel.addAttribute("question", question); return "settings/questionOptions/update"; } catch (Exception e) { log.error(e.getMessage(), e); throw (new RuntimeException(e)); } } @Secured({ "ROLE_ADMIN", "ROLE_SURVEY_ADMIN" }) @RequestMapping(method = RequestMethod.POST, produces = "text/html") public String createPost(Question question, BindingResult bindingResult, @RequestParam(value = "_proceed", required = false) String proceed, Principal principal, Model uiModel, HttpServletRequest httpServletRequest) { log.info("create(): handles " + RequestMethod.POST.toString()); try { log.info("-------------------------------------------------"); String login = principal.getName(); User user = userService.user_findByLogin(login); SurveyDefinition surveyDefinition = surveySettingsService.question_findById(question.getId()).getPage() .getSurveyDefinition(); if (!securityService.userIsAuthorizedToManageSurvey(surveyDefinition.getId(), user) && !securityService.userBelongsToDepartment(surveyDefinition.getDepartment().getId(), user)) { log.warn("Unauthorized access to url path " + httpServletRequest.getPathInfo() + " attempted by user login:" + principal.getName() + "from IP:" + httpServletRequest.getLocalAddr()); return "accessDenied"; } if (proceed != null) { boolean hasNoOptions = true; boolean isValid = true; int i = 0; for (QuestionOption questionOption : question.getOptionsList2()) { //if the value or text is not null and not a blank string if ((questionOption.getValue() != null && questionOption.getText() != null) && (questionOption.getValue().trim().length() > 0 || questionOption.getText().trim().length() > 0)) { hasNoOptions = false; //validate the length if (questionOption.getValue().trim().length() == 0 || questionOption.getValue().trim().length() > 5) { bindingResult.rejectValue("optionsList2[" + i + "].value", "nullvalue"); isValid = false; } //validate the length if (questionOption.getText().trim().length() == 0 || questionOption.getText().trim().length() > 250) { bindingResult.rejectValue("optionsList2[" + i + "].text", "nullvalue"); isValid = false; } } i++; } if (hasNoOptions) { isValid = false; bindingResult.rejectValue("optionsList2[" + 0 + "].value", "nullValueEntered"); //re-populate the place holders for options for (int j = 1; j <= EMPTY_OPTIONS_COUNT; j++) { question.getOptions() .add(new QuestionOption(question, (short) (question.getOptions().size() + j))); } } if (!isValid) { return "settings/questionOptions/update"; } else { question = surveySettingsService.question_updateOptions(question); return "settings/questionOptions/saved"; } } //cancel button handler else { question = surveySettingsService.question_updateOptions(question); return "redirect:/settings/surveyDefinitions/" + encodeUrlPathSegment( question.getPage().getSurveyDefinition().getId().toString(), httpServletRequest); } } 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"; } }