/**
* 更新功能
*
* @return
*/
public String update() {
try {
// 1. 检查传入的会员等级属性是否合法
if (!checkCategoryVO()) {
return ERROR;
} else {
// 2. 更新新的会员等级
categoryService.updateCategory(category);
setMessage(MessageUtil.getMessage("category_update_success", category.getName()));
category = new CategoryVO();
}
} catch (DuplicateNameException e) {
this.setMessage(e.getMessage());
return ERROR;
} catch (CategoryNotFoundException e) {
this.setMessage(e.getMessage());
return ERROR;
} catch (NumberFormatException e) {
this.setMessage(e.getMessage());
return ERROR;
} finally {
getCategoryList();
refreshPageData();
}
return SUCCESS;
}
/**
* 更新新菜品分类
*
* @param categoryVO 菜品分类值对象，包含需要更新的数据
* @return 更新后的菜品分类值对象
* @throws DuplicateNameException 菜品分类命名重复异常
* @throws CategoryNotFoundException 菜品分类不存在异常
*/
@Transactional(
propagation = Propagation.REQUIRED,
readOnly = false,
rollbackFor = Exception.class)
public Category updateCategory(CategoryVO categoryVO)
throws DuplicateNameException, CategoryNotFoundException {
// 1. 检查需要更新的菜品分类是否存在
Category category = this.getCategoryById(categoryVO.getId());
Category checkedCategory = categoryDao.getCategoryByName(categoryVO.getName());
// 2. 检查是否有同名菜品分类
if (checkedCategory != null && checkedCategory.getId() != categoryVO.getId()) {
throw new DuplicateNameException(
MessageUtil.getMessage("category_name_msg", categoryVO.getName()));
} else {
// 3. 更新菜品分类
category.setName(categoryVO.getName());
category.setPicPath(categoryVO.getPicPath());
category.setUpdateDate(new Date());
categoryDao.update(category);
}
return category;
}
/**
* 根据指定的菜品分类ID获取菜品分类信息
*
* @param categoryId 菜品分类ID
* @return 返回菜品分类对象
* @throws CategoryNotFoundException 菜品分类对象不存在异常
*/
public Category getCategoryById(Long categoryId) throws CategoryNotFoundException {
Category category = categoryDao.get(categoryId);
if (null == category) {
throw new CategoryNotFoundException(MessageUtil.getMessage("category_id", "" + categoryId));
}
return category;
}
/**
* 根据指定的菜品分类名字查找菜品分类
*
* @param name 菜品分类名字
* @return 菜品分类对象
* @throws CategoryNotFoundException 菜品分类对象不存在异常
*/
public Category getCategoryByName(String name) throws CategoryNotFoundException {
Category category = categoryDao.getCategoryByName(name);
if (null == category) {
throw new CategoryNotFoundException(MessageUtil.getMessage("category_name_msg", name));
}
return category;
}
/** 检查一个菜品的设定是否合法 */
private boolean checkCategoryVO() {
boolean isValidVO = true;
if (null == category) {
isValidVO = false;
addFieldError("category.categoryvo", MessageUtil.getMessage("category_invalid_vo"));
return isValidVO;
}
if (StringUtil.isEmpty(category.getName())) {
isValidVO = false;
addFieldError("category.name", MessageUtil.getMessage("category_name_rule"));
} else {
category.setName(category.getName());
}
if (StringUtil.isEmpty(category.getPicPath())) {
isValidVO = false;
addFieldError("category.pic.path", MessageUtil.getMessage("pic_path_rule"));
}
return isValidVO;
}
/**
* 删除功能
*
* @return
*/
public String remove() {
// 更新页面数据
refreshPageData();
if (null != id) {
try {
categoryService.deleteCategory(Long.parseLong(id));
} catch (CategoryNotFoundException e) {
this.setMessage(e.getMessage());
return ERROR;
}
}
this.setMessage(MessageUtil.getMessage("delete_success"));
// 更新记录列表
getCategoryList();
return SUCCESS;
}
/**
* 添加新菜品分类
*
* @param categoryVO 菜品分类值对象
* @return 新创建的菜品分类对象
* @throws DuplicateNameException 菜品分类命名重复异常
*/
@Transactional(
propagation = Propagation.REQUIRED,
readOnly = false,
rollbackFor = Exception.class)
public Category addCategory(CategoryVO categoryVO) throws DuplicateNameException {
Category category = null;
// 1. 检查是否有同名菜品分类
if (null == categoryDao.getCategoryByName(categoryVO.getName())) {
category = new Category();
category.setName(categoryVO.getName());
category.setPicPath(categoryVO.getPicPath());
category.setCreateDate(new Date());
Long categoryId = categoryDao.save(category);
category = categoryDao.get(categoryId);
} else {
throw new DuplicateNameException(
MessageUtil.getMessage("category_name_msg", categoryVO.getName()));
}
return category;
}
/**
* 添加新会员等级Action
*
* @return
*/
public String save() {
logger.debug(category);
try {
// 1. 检查传入的会员等级属性是否合法
if (!checkCategoryVO()) {
return ERROR;
} else {
// 2. 创建新的会员等级
categoryService.addCategory(category);
setMessage(MessageUtil.getMessage("category_save_success", category.getName()));
category = new CategoryVO();
}
} catch (DuplicateNameException e) {
logger.error(e.getMessage());
this.setMessage(e.getMessage());
return ERROR;
} finally {
getCategoryList();
refreshPageData();
}
return SUCCESS;
}
/**
* 删除菜品分类
*
* @param categoryId 菜品分类id
* @throws CategoryNotFoundException 菜品分类不存在异常
*/
@Transactional(
propagation = Propagation.REQUIRED,
readOnly = false,
rollbackFor = Exception.class)
public void deleteCategory(Long categoryId) throws CategoryNotFoundException {
// 1. 检查需要删除的菜品分类是否存在
Category category = this.getCategoryById(categoryId);
// 2. 将要删除菜品分类下的菜品重置为默认分类
Category defaultCategory = categoryDao.getCategoryByName(Constants.DEFAULT_CATEGORY);
if (null == defaultCategory) {
throw new CategoryNotFoundException(
MessageUtil.getMessage("category_name_msg", Constants.DEFAULT_CATEGORY));
} else {
for (Dish dish : category.getDishes()) {
dish.setCategory(defaultCategory);
dishDao.update(dish);
}
}
// 3. 删除菜品分类
categoryDao.delete(category);
}
/**
* 上传图片
*
* @return
* @throws Exception
*/
public String uploadImage() {
// 得到当前时间自1970年1月1日0时0分0秒开始流逝的毫秒数，将这个毫秒数作为上传文件新的文件名。
long now = new Date().getTime();
// 得到保存上传文件的目录的真实路径
String path = ServletActionContext.getServletContext().getRealPath(uploadDir);
File dir = new File(path);
// 如果这个目录不存在，则创建它。
if (!dir.exists()) {
dir.mkdir();
}
if (null != fileFileName && !"".equals(fileFileName.trim())) {
int index = fileFileName.lastIndexOf('.');
// 判断上传文件名是否有扩展名
if (index != -1) {
newFileName = now + fileFileName.substring(index);
} else {
newFileName = Long.toString(now);
}
this.setNewFileName(newFileName);
BufferedOutputStream bos = null;
BufferedInputStream bis = null;
// 读取保存在临时目录下的上传文件，写入到新的文件中。
try {
FileInputStream fis = new FileInputStream(file);
bis = new BufferedInputStream(fis);
FileOutputStream fos = new FileOutputStream(new File(dir, newFileName));
bos = new BufferedOutputStream(fos);
byte[] buf = new byte[4096];
int len = -1;
while ((len = bis.read(buf)) != -1) {
bos.write(buf, 0, len);
}
} catch (FileNotFoundException e) {
this.setMessage(MessageUtil.getMessage("file_not_found_fxception", fileFileName));
return INPUT;
} catch (IOException e) {
this.setMessage(MessageUtil.getMessage("io_exception", newFileName));
return INPUT;
} finally {
refreshPageData();
try {
if (null != bis) {
bis.close();
}
if (null != bos) {
bos.close();
}
} catch (IOException e) {
this.setMessage(MessageUtil.getMessage("io_exception", newFileName));
return INPUT;
}
}
}
if (null == category) {
category = new CategoryVO();
}
if (null != category) {
category.setName(categoryName);
if (null != categoryId) {
category.setId(categoryId);
setId(categoryId.toString());
}
category.setPicPath("/dish/" + newFileName);
}
this.setMessage(MessageUtil.getMessage("upload_picture_success_msg"));
return SUCCESS;
}
public String getMessage() {
return MessageUtil.getMessage(exceptionKey, queryCriteria);
}