这篇文章将为大家详细讲解有关Java中如何实现网上电子书城，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。
项目描述： spring mvc +jsp实现的简单书城项目，可以在支付宝沙箱内实现支付
运行环境： jdk8+tomcat9+mysql+IntelliJ IDEA
项目技术： spring+spring mvc+mybatis+jsp+maven
后台管理员图书管理代码：
@Controller@RequestMapping("/admin/book")@RequiresPermissions("book-manage")public class AdminBookController { @Autowired private IBookInfoService bookInfoService; @Autowired private BookDescMapper bookDescMapper; @Autowired private IStoreService storeService; @Value("${image.url.prefix}") private String urlPrefix; @RequestMapping("toAddition") @RequiresPermissions("book-add") public String toAddition() { return "admin/book/add"; } @RequestMapping("/addition") @RequiresPermissions("book-add") public String addBook(BookInfo bookInfo, String bookDesc, MultipartFile pictureFile, HttpServletRequest request) throws Exception { uploadPicture(bookInfo, pictureFile, request); bookInfoService.saveBook(bookInfo, bookDesc); return "redirect:/admin/book/list"; } @RequestMapping(value = "/list") @RequiresPermissions("book-query") public String bookList(@RequestParam(defaultValue = "", required = false) String keywords, @RequestParam(value = "page", defaultValue = "1", required = false) int page, HttpSession session, Model model) { keywords = keywords.trim(); Store store = (Store) session.getAttribute("loginStore"); if (store != null) { PageInfo<BookInfo> books = bookInfoService.findBookListByCondition(keywords, 0, page, 10, store.getStoreId()); model.addAttribute("bookPageInfo", books); model.addAttribute("keywords", keywords); } else { model.addAttribute("exception", "您请求的资源不存在"); return "exception"; } return "admin/book/list"; } @RequestMapping("/echo") @RequiresPermissions("book-edit") public String echo(int bookId, Model model) throws BSException { BookInfo bookInfo = bookInfoService.adminFindById(bookId); BookDesc bookDesc = bookDescMapper.selectByPrimaryKey(bookInfo.getBookId()); model.addAttribute("bookInfo", bookInfo); model.addAttribute("bookDesc", bookDesc); return "admin/book/edit"; } @RequestMapping("/update") @RequiresPermissions("book-edit") public String updateBook(BookInfo bookInfo, String bookDesc, String keywords, MultipartFile pictureFile, HttpServletRequest request, RedirectAttributes ra) throws Exception { uploadPicture(bookInfo, pictureFile, request); BookInfo originBook = bookInfoService.findById(bookInfo.getBookId()); bookInfoService.updateBook(bookInfo, bookDesc); //更新图片后，删除原来的图片 String realPath = request.getServletContext().getRealPath("/"); File uploadPic = new File(realPath + originBook.getImageUrl()); uploadPic.delete(); //重定向到书籍列表 ra.addAttribute("keywords", keywords); return "redirect:/admin/book/list"; } @RequestMapping("/deletion/{bookId}") @RequiresPermissions("book-delete") public String deletion(@PathVariable("bookId") int bookId, String keywords, RedirectAttributes ra, HttpServletRequest request) throws BSException { BookInfo bookInfo = bookInfoService.findById(bookId); String realPath = request.getServletContext().getRealPath("/"); File uploadPic = new File(realPath + bookInfo.getImageUrl()); uploadPic.delete(); bookInfoService.deleteBook(bookId); ra.addAttribute("keywords", keywords); return "redirect:/admin/book/list"; } @RequestMapping("/shelf") @RequiresPermissions("book-shelf") public String bookOffShelf(int bookId, int isShelf, String keywords, RedirectAttributes ra) { bookInfoService.changeShelfStatus(bookId, isShelf); ra.addAttribute("keywords", keywords); return "redirect:/admin/book/list"; } private void uploadPicture(BookInfo bookInfo, MultipartFile pictureFile, HttpServletRequest request) throws IOException { if (pictureFile != null) { if (!StringUtils.isEmpty(pictureFile.getOriginalFilename())) { String realPath = request.getServletContext().getRealPath("/" + urlPrefix); //原始文件名称 String pictureFileName = pictureFile.getOriginalFilename(); //新文件名称 String newFileName = IDUtils.genShortUUID() + pictureFileName.substring(pictureFileName.lastIndexOf(".")); //上传图片 File uploadPic = new File(realPath + File.separator + newFileName); //向磁盘写文件 pictureFile.transferTo(uploadPic); bookInfo.setImageUrl(urlPrefix + File.separator + newFileName); } } } }书信息控制层：
@Controller@RequestMapping("/book")public class BookInfoController { @Autowired private IBookInfoService bookInfoService; @Autowired private BookDescMapper bookDescMapper; @RequestMapping("/info/{bookId}") public String bookInfo(@PathVariable("bookId") Integer bookId, Model model) throws BSException { //查询书籍 BookInfo bookInfo = bookInfoService.findById(bookId); //查询书籍推荐列表 List<BookInfo> recommendBookList = bookInfoService.findBookListByCateId(bookInfo.getBookCategoryId(), 1, 5); //查询书籍详情 BookDesc bookDesc = bookDescMapper.selectByPrimaryKey(bookId); //增加访问量 bookInfoService.addLookMount(bookInfo); Collections.shuffle(recommendBookList); model.addAttribute("bookInfo", bookInfo); model.addAttribute("bookDesc", bookDesc); model.addAttribute("recommendBookList", recommendBookList); return "book_info"; } @RequestMapping("/list") public String bookSearchList(@RequestParam(defaultValue = "", required = false) String keywords, @RequestParam(defaultValue = "0", required = false) int cateId,//分类Id，默认为0，即不按照分类Id查 @RequestParam(defaultValue = "1", required = false) int page, @RequestParam(defaultValue = "6", required = false) int pageSize, Model model) { keywords = keywords.trim(); PageInfo<BookInfo> bookPageInfo = bookInfoService.findBookListByCondition(keywords, cateId, page, pageSize,0);//storeId为0，不按照商店Id查询 model.addAttribute("bookPageInfo", bookPageInfo); model.addAttribute("keywords", keywords); model.addAttribute("cateId", cateId); return "book_list"; } }用户管理控制层：
@Controller@RequestMapping("/user")public class UserController { @Autowired private IUserService userService; @Autowired private IMailService mailService; @Autowired private IStoreService storeService; @Value("${mail.fromMail.addr}") private String from; @Value("${my.ip}") private String ip; private final String USERNAME_PASSWORD_NOT_MATCH = "用户名或密码错误"; private final String USERNAME_CANNOT_NULL = "用户名不能为空"; @RequestMapping("/login") public String login(@RequestParam(value = "username", required = false) String username, @RequestParam(value = "password", required = false) String password, HttpServletRequest request, Model model) { if (StringUtils.isEmpty(username) || StringUtils.isEmpty(password)) { return "login"; } //未认证的用户 Subject userSubject = SecurityUtils.getSubject(); if (!userSubject.isAuthenticated()) { UsernamePasswordToken token = new UsernamePasswordToken(username, password); token.setRememberMe(false);//禁止记住我功能 try { //登录成功 userSubject.login(token); User loginUser = (User) userSubject.getPrincipal(); request.getSession().setAttribute("loginUser", loginUser); Store store = storeService.findStoreByUserId(loginUser.getUserId()); request.getSession().setAttribute("loginStore", store); SavedRequest savedRequest = WebUtils.getSavedRequest(request); String url = "/"; if (savedRequest != null) { url = savedRequest.getRequestUrl(); if(url.contains(request.getContextPath())){ url = url.replace(request.getContextPath(),""); } } if(StringUtils.isEmpty(url) || url.equals("/favicon.ico")){ url = "/"; } return "redirect:" + url; } catch (UnknownAccountException | IncorrectCredentialsException uae) { model.addAttribute("loginMsg", USERNAME_PASSWORD_NOT_MATCH); return "login"; } catch (LockedAccountException lae) { model.addAttribute("loginMsg", "账户已被冻结！"); return "login"; } catch (AuthenticationException ae) { model.addAttribute("loginMsg", "登录失败！"); return "login"; } } else { //用户已经登录 return "redirect:/index"; } } @RequestMapping("/info") public String personInfo(){ return "user_info"; } //shiro框架帮我们注销 @RequestMapping("/logout") @CacheEvict(cacheNames="authorizationCache",allEntries = true) public String logout() { SecurityUtils.getSubject().logout(); return "redirect:/page/login"; } @RequestMapping("/checkUserExist") @ResponseBody public BSResult checkUserExist(String username) { if (StringUtils.isEmpty(username)) { return BSResultUtil.build(200, USERNAME_CANNOT_NULL, false); } return userService.checkUserExistByUsername(username); } @RequestMapping("/register") public String register(User user, Model model) { BSResult isExist = checkUserExist(user.getUsername()); //尽管前台页面已经用ajax判断用户名是否存在， // 为了防止用户不是点击前台按钮提交表单造成的错误，后台也需要判断 if ((Boolean) isExist.getData()) { user.setActive("1"); BSResult bsResult = userService.saveUser(user); //获得未激活的用户 User userNotActive = (User) bsResult.getData(); model.addAttribute("username", user.getUsername()); return "register_success"; } else { //用户名已经存在，不能注册 model.addAttribute("registerError", isExist.getMessage()); return "register"; } } @RequestMapping("/active") public String activeUser(String activeCode, Model model) { BSResult bsResult = userService.activeUser(activeCode); if (!StringUtils.isEmpty(bsResult.getData())) { model.addAttribute("username", bsResult.getData()); return "active_success"; } else { model.addAttribute("failMessage", bsResult.getMessage()); return "fail"; } } @RequestMapping("/update") @ResponseBody public BSResult updateUser(User user, HttpSession session){ User loginUser = (User) session.getAttribute("loginUser"); loginUser.setNickname(user.getNickname()); loginUser.setLocation(user.getLocation()); loginUser.setDetailAddress(user.getDetailAddress()); loginUser.setGender(user.getGender()); loginUser.setUpdated(new Date()); loginUser.setPhone(user.getPhone()); loginUser.setIdentity(user.getIdentity()); loginUser.setPhone(user.getPhone()); BSResult bsResult = userService.updateUser(loginUser); session.setAttribute("loginUser", loginUser); return bsResult; } @RequestMapping("/password/{userId}") @ResponseBody public BSResult changePassword(@PathVariable("userId") int userId,String oldPassword,String newPassword){ if(StringUtils.isEmpty(oldPassword) || StringUtils.isEmpty(newPassword)){ return BSResultUtil.build(400, "密码不能为空"); } return userService.compareAndChange(userId,oldPassword,newPassword); } }关于“Java中如何实现网上电子书城”这篇文章就分享到这里了，希望以上内容可以对大家有一定的帮助，使各位可以学到更多知识，如果觉得文章不错，请把它分享出去让更多的人看到。
