Java tutorial
/* * Copyright 2014 Tagbangers, Inc. * * 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.wallride.web.controller.admin.article; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.context.support.MessageSourceAccessor; import org.springframework.stereotype.Controller; import org.springframework.validation.BindingResult; import org.springframework.validation.ObjectError; import org.springframework.web.bind.annotation.ModelAttribute; 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.servlet.mvc.support.RedirectAttributes; import org.wallride.domain.Article; import org.wallride.service.ArticleService; import org.wallride.support.AuthorizedUser; import javax.inject.Inject; import javax.validation.Valid; import javax.validation.ValidationException; import java.util.ArrayList; import java.util.Collection; import java.util.List; @Controller @RequestMapping(value = "/{language}/articles/bulk-delete", method = RequestMethod.POST) public class ArticleBulkDeleteController { @Inject private ArticleService articleService; @Inject private MessageSourceAccessor messageSourceAccessor; private static Logger logger = LoggerFactory.getLogger(ArticleBulkDeleteController.class); @ModelAttribute("query") public String query(@RequestParam(required = false) String query) { return query; } @RequestMapping public String delete(@Valid @ModelAttribute("form") ArticleBulkDeleteForm form, BindingResult errors, String query, AuthorizedUser authorizedUser, RedirectAttributes redirectAttributes) { redirectAttributes.addAttribute("query", query); if (!form.isConfirmed()) { errors.rejectValue("confirmed", "Confirmed"); } if (errors.hasErrors()) { logger.debug("Errors: {}", errors); return "redirect:/_admin/{language}/articles/index"; } Collection<Article> articles = null; try { articles = articleService.bulkDeleteArticle(form.buildArticleBulkDeleteRequest(), errors); } catch (ValidationException e) { if (errors.hasErrors()) { logger.debug("Errors: {}", errors); return "redirect:/_admin/{language}/articles/index"; } throw e; } List<String> errorMessages = null; if (errors.hasErrors()) { errorMessages = new ArrayList<>(); for (ObjectError error : errors.getAllErrors()) { errorMessages.add(messageSourceAccessor.getMessage(error)); } } redirectAttributes.addFlashAttribute("deletedArticles", articles); redirectAttributes.addFlashAttribute("errorMessages", errorMessages); return "redirect:/_admin/{language}/articles/index"; } }