FruitCategoryController.java

package org.xmx0632.deliciousfruit.web.admin;

import java.util.List;
import java.util.Locale;
import java.util.Map;

import javax.servlet.ServletRequest;
import javax.validation.Valid;

import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.support.ResourceBundleMessageSource;
import org.springframework.data.domain.Page;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
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.RequestParam;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;
import org.springside.modules.web.Servlets;
import org.xmx0632.deliciousfruit.api.v1.bo.TerminalType;
import org.xmx0632.deliciousfruit.api.v1.helper.PictureUrlHelper;
import org.xmx0632.deliciousfruit.entity.FruitCategory;
import org.xmx0632.deliciousfruit.global.ConfigConstant;
import org.xmx0632.deliciousfruit.service.ConfigService;
import org.xmx0632.deliciousfruit.service.FruitCategoryService;
import org.xmx0632.deliciousfruit.service.UploadFilePathService;
import org.xmx0632.deliciousfruit.service.UploadFileService;

import com.google.common.collect.Lists;
import com.google.common.collect.Maps;

@Controller
@RequestMapping(value = "/admin/fruitCategory")
public class FruitCategoryController {

	private static Logger log = LoggerFactory
			.getLogger(FruitCategoryController.class);

	@Autowired
	private ResourceBundleMessageSource messageSource;

	private static Map<String, String> sortTypes = null;

	private Map<String, String> getSortTypes(Locale locale) {
		if (sortTypes == null) {
			sortTypes = Maps.newLinkedHashMap();

			sortTypes.put("auto",
					messageSource.getMessage("common.auto", null, locale));
			sortTypes.put("name", messageSource.getMessage(
					"fruitCategory.name", null, locale));
		}
		return sortTypes;
	}

	@Autowired
	private FruitCategoryService fruitCategoryService;

	@Autowired
	private ConfigService configService;

	@Autowired
	private UploadFileService uploadFileService;

	@Autowired
	private UploadFilePathService uploadFilePathService;

	@RequestMapping(method = RequestMethod.GET)
	public String list(
			@RequestParam(value = "sortType", defaultValue = "auto") String sortType,
			@RequestParam(value = "page", defaultValue = "1") int pageNumber,
			Model model, ServletRequest request) {
		List<String> imgAddressList = Lists.newArrayList();
		for (TerminalType t : TerminalType.values()) {
			String imgAddress = PictureUrlHelper.genTerminalRootUrl(t,
					configService);
			log.debug("imgAddress:{}", imgAddress);
			imgAddressList.add(imgAddress);
		}
		model.addAttribute("imgAddressList", imgAddressList);

		Map<String, Object> searchParams = Servlets.getParametersStartingWith(
				request, "search_");
		Page<FruitCategory> fruitCategorys = fruitCategoryService
				.getFruitCategorys(searchParams, pageNumber,
						configService.getIntByName(ConfigConstant.PAGE_SIZE),
						sortType);
		model.addAttribute("fruitCategorys", fruitCategorys);
		model.addAttribute("sortType", sortType);
		model.addAttribute("sortTypes", getSortTypes(request.getLocale()));
		model.addAttribute("searchParams", Servlets
				.encodeParameterStringWithPrefix(searchParams, "search_"));

		return "admin/fruitCategoryList";
	}

	@RequestMapping(value = "create", method = RequestMethod.GET)
	public String createForm(Model model) {
		model.addAttribute("fruitCategory", new FruitCategory());
		model.addAttribute("action", "create");
		return "admin/fruitCategoryForm";
	}

	@RequestMapping(value = "create", method = RequestMethod.POST)
	public String create(@Valid FruitCategory newFruitCategory,
			@RequestParam MultipartFile iosNormalIcon,
			@RequestParam MultipartFile iosRetinaIcon,
			RedirectAttributes redirectAttributes) {

		try {
			fruitCategoryService.saveFruitCategory(newFruitCategory);
			saveUploadIconAndUpdateData(newFruitCategory, iosNormalIcon,
					iosRetinaIcon);
			redirectAttributes.addFlashAttribute("message", "创建["
					+ newFruitCategory.getName() + "]成功");
			return "redirect:/admin/fruitCategory/";
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			redirectAttributes.addFlashAttribute("error", e.getMessage());
			return "redirect:/admin/fruitCategory/update/"
					+ newFruitCategory.getId();
		}

	}

	@RequestMapping(value = "update/{id}", method = RequestMethod.GET)
	public String updateForm(@PathVariable("id") Long id, Model model) {
		model.addAttribute("fruitCategory",
				fruitCategoryService.getFruitCategory(id));
		model.addAttribute("action", "update");

		List<String> imgAddressList = Lists.newArrayList();
		for (TerminalType t : TerminalType.values()) {
			String imgAddress = configService
					.getByName(ConfigConstant.IMG_SERVER_ROOT_ADDRESS)
					+ configService.getByName(t);
			imgAddressList.add(imgAddress);
		}
		model.addAttribute("imgAddressList", imgAddressList);
		return "admin/fruitCategoryForm";
	}

	@RequestMapping(value = "update", method = RequestMethod.POST)
	public String update(
			@Valid @ModelAttribute("preloadFruitCategory") FruitCategory fruitCategory,
			@RequestParam MultipartFile iosNormalIcon,
			@RequestParam MultipartFile iosRetinaIcon,
			RedirectAttributes redirectAttributes) {
		try {
			saveUploadIconAndUpdateData(fruitCategory, iosNormalIcon,
					iosRetinaIcon);
			redirectAttributes.addFlashAttribute("message", "更新"
					+ fruitCategory.getName() + "成功");
			return "redirect:/admin/fruitCategory/";
		} catch (Exception e) {
			log.error(e.getMessage(), e);
			redirectAttributes.addFlashAttribute("error", e.getMessage());
			return "redirect:/admin/fruitCategory/update/"
					+ fruitCategory.getId();
		}
	}

	private void saveUploadIconAndUpdateData(FruitCategory fruitCategory,
			MultipartFile iosNormalIcon, MultipartFile iosRetinaIcon) {

		uploadFileService.saveCategoryImageFile(iosNormalIcon,
				fruitCategory.getId(), TerminalType.IOS_NORMAL);
		uploadFileService.saveCategoryImageFile(iosRetinaIcon,
				fruitCategory.getId(), TerminalType.IOS_RETINA);

		String originalFilename = iosNormalIcon.getOriginalFilename();
		if (StringUtils.isNotBlank(originalFilename)) {
			String iconUrl = uploadFilePathService.getCategoryIconUrl(
					fruitCategory.getId(), originalFilename);
			fruitCategory.setIconUrl(iconUrl);
		}
		fruitCategoryService.saveFruitCategory(fruitCategory);
	}

	@RequestMapping(value = "delete/{id}")
	public String delete(@PathVariable("id") Long id,
			RedirectAttributes redirectAttributes) {
		fruitCategoryService.deleteFruitCategory(id);
		redirectAttributes.addFlashAttribute("message", "删除fruitCategory成功");
		return "redirect:/admin/fruitCategory";
	}

	/**
	 * 使用@ModelAttribute, 实现Struts2
	 * Preparable二次部分绑定的效果,先根据form的id从数据库查出FruitCategory对象,再把Form提交的内容绑定到该对象上.
	 * 因为仅update()方法的form中有id属性,因此本方法在该方法中执行.
	 */
	@ModelAttribute("preloadFruitCategory")
	public FruitCategory getFruitCategory(
			@RequestParam(value = "id", required = false) Long id) {
		if (id != null) {
			return fruitCategoryService.getFruitCategory(id);
		}
		return null;
	}
}