今天小编给大家分享一下Java实现图片展览馆管理系统的代码的相关知识点，内容详细，逻辑清晰，相信大部分人都还太了解这方面的知识，所以分享这篇文章给大家参考一下，希望大家阅读完这篇文章后有所收获，下面我们一起来了解一下吧。
Jdk1.8 + Tomcat8.5 + mysql + Eclispe（IntelliJ IDEA,Eclispe,MyEclispe,Sts都支持）
Springboot+ SpringMVC + JPA+ Jsp + Html+ JavaScript + JQuery + Ajax + maven等等
订单服务：
@WebServlet("/order/OrderServlet") public class OrderServlet extends HttpServlet { private OrderService service = new OrderServiceImpl(); private ClientServiceImpl clientService=new ClientServiceImpl(); @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { req.setCharacterEncoding("UTF-8"); resp.setContentType("text/html;charset=UTF-8"); String op = req.getParameter("op");// 得到传过来的请求 // 生成订单 if (op.equals("genOrder")) { genOrder(req, resp); } // 查看订单 if (op.equals("findAllOrders")) { findAllOrders(req, resp); } // 管理员查看订单 if (op.equals("findOrders")) { findOrders(req, resp); } // 发货 if (op.equals("faHuo")) { faHuo(req, resp); } //删除订单 if(op.equals("deletes")) { deletes(req,resp); } } private void deletes(HttpServletRequest req, HttpServletResponse resp) throws IOException { String orderNumber = req.getParameter("orderNum"); Order findOrderByNum = service.findOrderByNum(orderNumber); if(findOrderByNum.getItems().size()!=0) { resp.getWriter().print("<script>alert('该订单下有订单子项不可删除,请先删除订单子项!')</script>"); resp.getWriter().print("<script>location.href='../admin/managerOrder.jsp'</script>"); return; } try { service.deleteByNumber(orderNumber); resp.getWriter().print("<script>alert('删除成功!')</script>"); resp.sendRedirect("../admin/managerOrder.jsp"); }catch (Exception e) { resp.getWriter().print("<script>alert('该订单下有订单子项不可删除,请先删除订单子项!')</script>"); return; } } private void faHuo(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { String ordernum = req.getParameter("ordernum"); service.faHuo(ordernum); List<Order> orders = service.findOrders(); HttpSession session = req.getSession(); session.setAttribute("orders", orders); System.out.println(orders); resp.sendRedirect(req.getContextPath() + "/admin/managerOrder.jsp"); } private void findOrders(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { List<Order> orders = service.findOrders(); HttpSession session = req.getSession(); session.setAttribute("orders", orders); req.getRequestDispatcher("/admin/managerOrder.jsp").forward(req, resp); } private void findAllOrders(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { HttpSession session = req.getSession(); User user = (User) session.getAttribute("user"); List<Order> orders = service.findUserOrders(user); req.setAttribute("orders", orders); req.getRequestDispatcher("/person/personOrder.jsp").forward(req, resp); } private void genOrder(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException { // 取出购物车信息 // 取出购物项信息 HttpSession session = req.getSession(); Cart cart = (Cart) session.getAttribute("cart"); User user = (User) session.getAttribute("user"); if (cart == null) { session.setAttribute("message", "会话已经结束！"); req.getRequestDispatcher("../message.jsp").forward(req, resp); return; } //先判断库存够不够！ Book book = cart.getBook(); String book_id = book.getBook_id(); Book findBookById = clientService.findBookById(book_id); if(findBookById.getBook_kunumber()-cart.getTotalQuantity()<0) { session.setAttribute("message", "库存不足,无法购买！"); session.removeAttribute("cart"); req.getRequestDispatcher("../message.jsp").forward(req, resp); return; } Order order = new Order(); order.setTime(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date())); String ordernum = genOrdernum(); order.setOrdernum(ordernum); order.setQuantity(cart.getTotalQuantity()); order.setMoney(cart.getTotalMoney()); order.setUser(user); // 订单项 List<Orderitem> oItems = new ArrayList<Orderitem>(); for (Map.Entry<String, CartItem> me : cart.getItmes().entrySet()) { CartItem cItem = me.getValue(); Orderitem oItem = new Orderitem(); oItem.setId(genOrdernum()); oItem.setBook(cItem.getBook()); oItem.setPrice(cItem.getMoney()); oItem.setQuantity(cItem.getQuantity()); oItem.setOrdernum(ordernum); oItems.add(oItem); } // 建立订单项和订单的关系 order.setItems(oItems); service.genOrder(order); req.setAttribute("order", order); req.getSession().removeAttribute("cart"); req.removeAttribute("cart"); req.getRequestDispatcher("/order.jsp").forward(req, resp); } // 生成订单号 private String genOrdernum() { Date now = new Date(); DateFormat df = new SimpleDateFormat("yyyyMMdd"); String s1 = df.format(now); return s1 + System.nanoTime(); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { doGet(req, resp); } }管理员登录服务：
@WebServlet("/admin/ManagerServlet") public class ManagerServlet extends HttpServlet { private ManagerService service = new ManagerServiceImpl(); @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { req.setCharacterEncoding("UTF-8"); resp.setContentType("text/html;charset=UTF-8"); String op = req.getParameter("op");// 得到传过来的请求 // 管理员登陆 if (op.equals("login")) { login(req, resp); } // 修改管理员资料 if (op.equals("managerInformation")) { managerInformation(req, resp); } // 修改管理员登录密码 if (op.equals("managerPassword")) { managerPassword(req, resp); } // 注销 if (op.equals("layout")) { layout(req, resp); } // 添加书籍前先获取所有分类 if (op.equals("addBookUI")) { addBookUI(req, resp); } // 添加书籍 if (op.equals("addBook")) { try { addBook(req, resp); } catch (FileUploadException e) { // TODO Auto-generated catch block e.printStackTrace(); } } // 添加书籍分类 if (op.equals("addCategory")) { addCategory(req, resp); } // 文学艺术类书籍列表 if (op.equals("category")) { getCategoryBook(req, resp); } // 编辑书籍信息前获取书籍的信息回显 if (op.equals("editBookUI")) { editBookUI(req, resp); } // 编辑书籍 if (op.equals("editBook")) { try { editBook(req, resp); } catch (FileUploadException e) { // TODO Auto-generated catch block e.printStackTrace(); } } // 删除书籍 if (op.equals("delBook")) { delBook(req, resp); } // 获取书籍分类列表 if (op.equals("categoryList")) { categoryList(req, resp); } // 获得分类信息 if (op.equals("editCategoryUI")) { editCategoryUI(req, resp); } // 修改书籍分类信息 if (op.equals("editCategory")) { editCategory(req, resp); } // 删除书籍分类 if (op.equals("delCategory")) { delCategory(req, resp); } // 用户信息管理 if (op.equals("findUsers")) { findUsers(req, resp); } // 添加工作人员 if (op.equals("addAdmin")) { addAdmin(req, resp); } // 书籍销售情况 if (op.equals("sales")) { sales(req, resp); } //搜索 if(op.equals("search")) { search(req,resp); } } private void search(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { String name = req.getParameter("search"); if(name==null) { name=""; } List<Book> findListByBookName = service.findListByBookName(name); List<Category> categoryList = service.findAllCategory();// 分类 req.setAttribute("currentName", name); req.setAttribute("books", findListByBookName); req.setAttribute("categoryList", categoryList); req.getRequestDispatcher("/admin/booksList.jsp").forward(req, resp); } private void sales(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { List<Book> sales = service.sales(); req.setAttribute("sales", sales); req.getRequestDispatcher("/admin/sales.jsp").forward(req, resp); } private void addAdmin(HttpServletRequest req, HttpServletResponse resp) throws IOException { String username = req.getParameter("username"); String password = req.getParameter("password"); String name = req.getParameter("name"); String sex = req.getParameter("sex"); String tel = req.getParameter("tel"); Administrator admin = new Administrator(username, password, name, sex, tel); service.addAdmin(admin); resp.getWriter().write("<div style='text-align: center;margin-top: 260px'><img src='" + req.getContextPath() + "/img/duigou.png'/>添加成功！</div>"); } private void findUsers(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { List<User> list = service.findUsers(); HttpSession session = req.getSession(); session.setAttribute("users", list); req.getRequestDispatcher("/admin/managerUsers.jsp").forward(req, resp); } private void login(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { String username = req.getParameter("username"); String password = req.getParameter("password"); if(username==null || username=="") { req.setAttribute("message", "请填写用户名"); req.getRequestDispatcher("/admin/404.jsp").forward(req, resp); return; } if(password==null || password=="") { req.setAttribute("message", "请填写密码"); req.getRequestDispatcher("/admin/404.jsp").forward(req, resp); return; } HttpSession session = req.getSession(); Administrator admin = service.login(username, password); if (admin.getUsername() != null && admin.getUsername() != "") { req.setAttribute("message", "登陆成功"); session.setAttribute("admin", admin); req.getRequestDispatcher("/admin/message.jsp").forward(req, resp); } else { req.setAttribute("message", "账号或密码错误!"); req.getRequestDispatcher("/admin/404.jsp").forward(req, resp); } } private void managerInformation(HttpServletRequest req, HttpServletResponse resp) throws IOException { String username = req.getParameter("username"); String name = req.getParameter("name"); String sex = req.getParameter("sex"); String tel = req.getParameter("tel"); service.managerInformation(username, name, sex, tel); HttpSession session = req.getSession(); Administrator admin = (Administrator) session.getAttribute("admin"); admin.setName(name); admin.setSex(sex); admin.setTel(tel); session.setAttribute("admin", admin); resp.getWriter().write("<div style='text-align: center;margin-top: 260px'><img src='" + req.getContextPath() + "/img/duigou.png'/>修改成功！</div>"); } //修改管理员密码 private void managerPassword(HttpServletRequest req, HttpServletResponse resp) throws IOException { String username = req.getParameter("username"); String password = req.getParameter("password"); String repassword = req.getParameter("repassword"); String oldPassword = req.getParameter("oldPassword"); if(!password.equals(repassword)) { resp.getWriter().print("<script>alert('两次密码不一致')</script>"); return; } Administrator admin = service.findAdminByUsername(username); if(!admin.getPassword().equals(oldPassword)) { resp.getWriter().print("<script>alert('旧密码填写错误!')</script>"); return; } service.managerPassword(username, password); resp.getWriter().write("<div style='text-align: center;margin-top: 260px'><img src='" + req.getContextPath() + "/img/duigou.png'/>修改成功！</div>"); } private void layout(HttpServletRequest req, HttpServletResponse resp) { try { HttpSession session = req.getSession(); session.removeAttribute("admin"); resp.sendRedirect("../admin/managerLogin.jsp"); } catch (Exception e) { e.printStackTrace(); } } private void addBookUI(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { List<Category> categorys = service.findAllCategory(); req.setAttribute("cs", categorys); req.getRequestDispatcher("/admin/addBook.jsp").forward(req, resp); } private void addBook(HttpServletRequest req, HttpServletResponse resp) throws FileUploadException, IOException { // 判断表单是不是multipart/form-data类型 boolean isMultipart = ServletFileUpload.isMultipartContent(req); if (!isMultipart) { throw new RuntimeException("表单上传类型有误！！"); } // 创建工厂用来 解析请求内容 DiskFileItemFactory factory = new DiskFileItemFactory(); // 构建核心类对象 ServletFileUpload sfu = new ServletFileUpload(factory); List<FileItem> items = new ArrayList<FileItem>(); items = sfu.parseRequest(req); Book book = new Book(); for (FileItem item : items) { if (item.isFormField()) { // 普通字段：把数据分装到book对象中 processFormField(item, req, book); } else { // 上传字段：上传 processUplodFiled(item, req, book); } } // 把书籍信息保存到数据库中 service.addBook(book); resp.getWriter().write("<div style='text-align: center;margin-top: 260px'><img src='" + req.getContextPath() + "/img/duigou.png'/>添加成功！</div>"); } // 处理文件上传 private void processUplodFiled(FileItem item, HttpServletRequest req, Book book) { try { // 存放路径：不要放在web-inf中 // 01.获取存放文件的真实目录 // String dirImages = getServletContext().getRealPath("/images"); String dirImages =req.getServletContext().getRealPath("/")+"images/"; // String dirImages = getServletContext().getRealPath("/img"); // 02. 通过io存文件 // 03. 生成文件名 （用户上传图片， 图片名可能重复） String FieldName = item.getFieldName();// 输入框的name值 String name = item.getName(); String fileType = name.substring(name.lastIndexOf(".") + 1); String fileName = UUID.randomUUID().toString();// 生成用不重复的文件名 // 生成文件夹名 Date time = new Date(); SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd"); String strTime = simpleDateFormat.format(time); // path属性filename String path = strTime +File.separator + "books";// 存放到book对象中的路径 // String path = "books";// 存放到book对象中 String filename = fileName + "." + fileType; // fileDir：图片最终存在于fileDir File fileDir = new File(dirImages, path + File.separator + filename); // InputStream inputStream = item.getInputStream(); 从请求 对象中 通过流的方式 // 把 上传的文件加载到 内存中 构建输出流 File parentDir = new File(dirImages, path);// 父目录 if (!parentDir.exists()) { parentDir.mkdirs(); } book.setFilename(filename); book.setPath(path); InputStream inputStream = item.getInputStream(); FileOutputStream fos = new FileOutputStream(fileDir); int len = 0; while ((len = inputStream.read()) != -1) { fos.write(len); } } catch (IOException e) { e.printStackTrace(); } } // 把Fielditem中的数据封装到book中 private void processFormField(FileItem item, HttpServletRequest req, Book book) { try { // item每一个item对象代表一个输入框 // 01. 获取input输入框的 name 的值 根据规范 输入框 的name的取值， 与 javabean 中的 属性名一致 String inputName = item.getFieldName(); String inputValue = item.getString("UTF-8"); if (inputName.equals("categoryid")) {// 分类单独处理 // 获取到选择的分类的id，根据这个id取到分类的信息 String categoryid = item.getString(); System.out.println("categoryid=" + categoryid); Category category = service.findCategoryById(categoryid); System.out.println(category); book.setCategory(category); } else { BeanUtils.setProperty(book, inputName, inputValue); } } catch (Exception e) { e.printStackTrace(); } } // 添加书籍分类 private void addCategory(HttpServletRequest req, HttpServletResponse resp) { try { Category category = new Category(); BeanUtils.populate(category, req.getParameterMap()); String categoryName = category.getCategory_name(); if(StringUtils.isNullOrEmpty(categoryName)) { resp.getWriter().print("<script>alert('请填写分类名称')</script>"); resp.getWriter().print("<script>location.href='../admin/addCategory.jsp'</script>"); return; } service.addCategory(category);// 调用添加方法 resp.getWriter().write("<div style='text-align: center;margin-top: 260px'><img src='" + req.getContextPath() + "/img/duigou.png'/>添加成功！</div>"); } catch (Exception e) { e.printStackTrace(); } } private void getCategoryBook(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { List<Book> books = service.getCategoryBook(req.getParameter("cid"));// 文学艺术类书籍 List<Category> categoryList = service.findAllCategory();// 分类 req.setAttribute("books", books); req.setAttribute("categoryList", categoryList); req.setAttribute("currentName", ""); req.getRequestDispatcher("/admin/booksList.jsp").forward(req, resp); } private void editBookUI(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { String book_id = req.getParameter("book_id"); Book book = findBookById(book_id); List<Category> category = service.findAllCategory(); HashMap map = new HashMap(); map.put("book", book); map.put("category", category); req.setAttribute("map", map); req.getRequestDispatcher("/admin/editBook.jsp").forward(req, resp); } private void editBook(HttpServletRequest req, HttpServletResponse resp) throws FileUploadException, IOException { String book_id = req.getParameter("book_id"); String book_name = req.getParameter("book_name"); String book_author = req.getParameter("book_author"); String book_press = req.getParameter("book_press"); String book_desc = req.getParameter("book_desc"); double book_price = Double.parseDouble(req.getParameter("book_price")); String book_kunumber = req.getParameter("book_kunumber"); String categoryId = req.getParameter("categoryid"); Category findCategoryById = service.findCategoryById(categoryId); service.editBook(book_id, book_name, book_author, book_press, book_desc, book_price, book_kunumber,findCategoryById); resp.getWriter().write("<div style='text-align: center;margin-top: 260px'><img src='" + req.getContextPath() + "/img/duigou.png'/>修改成功！</div>"); } private void delBook(HttpServletRequest req, HttpServletResponse resp) throws IOException { String book_id = req.getParameter("book_id"); service.delBook(book_id); resp.getWriter().write("<div style='text-align: center;margin-top: 260px'><img src='" + req.getContextPath() + "/img/duigou.png'/>删除成功！</div>"); } private void categoryList(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { List<Category> categoryList = service.findAllCategory(); req.setAttribute("categoryList", categoryList); req.getRequestDispatcher("/admin/categorysList.jsp").forward(req, resp); } private void editCategoryUI(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { Category category = service.findCategoryById(req.getParameter("category_id")); req.setAttribute("category", category); req.getRequestDispatcher("/admin/editCategory.jsp").forward(req, resp); } private void editCategory(HttpServletRequest req, HttpServletResponse resp) throws IOException { Category category = new Category(req.getParameter("category_id"), req.getParameter("category_name"), req.getParameter("category_desc")); String categoryName = category.getCategory_name(); if(StringUtils.isNullOrEmpty(categoryName)) { resp.getWriter().print("<script>alert('请填写分类名称')</script>"); resp.getWriter().print("<script>location.href='../admin/editCategory.jsp'</script>"); return; } service.editCategory(category); resp.getWriter().write("<div style='text-align: center;margin-top: 260px'><img src='" + req.getContextPath() + "/img/duigou.png'/>修改成功！</div>"); } private void delCategory(HttpServletRequest req, HttpServletResponse resp) throws IOException { String category_id = req.getParameter("category_id"); service.delCategory(category_id); resp.getWriter().write("<div style='text-align: center;margin-top: 260px'><img src='" + req.getContextPath() + "/img/duigou.png'/>删除成功！</div>"); } // 通过书籍id找到书籍信息 private Book findBookById(String book_id) { return service.findBookById(book_id); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { doGet(req, resp); } }收藏夹业务处理：
@WebServlet("/client/ClientServlet") public class ClientServlet extends HttpServlet { private ClientService service = new ClientServiceImpl(); private ManagerService managerService = new ManagerServiceImpl(); @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { req.setCharacterEncoding("UTF-8"); resp.setContentType("text/html;charset=UTF-8"); String op = req.getParameter("op");// 得到传过来的请求 if (op != null && !op.equals("")) { // 登录 if (op.equals("login")) { login(req, resp); } // 注销 if (op.equals("layout")) { layout(req, resp); } // 注册 if (op.equals("register")) { register(req, resp); } // 文学艺术类书籍列表 if (op.equals("category")) { getCategoryBook(req, resp); } // 个人信息修改 if (op.equals("personInformation")) { personInformation(req, resp); } // 修改密码 if (op.equals("personPassword")) { personPassword(req, resp); } // 搜索框 if (op.equals("search")) { search(req, resp); } // 详情页面 if (op.equals("particulars")) { particulars(req, resp); } // 添加购物车 if (op.equals("addCart")) { addCart(req, resp); } // 删除购物车中的购物项 if (op.equals("delItem")) { delItem(req, resp); } // 修改购物项数量 if (op.equals("changeNum")) { changeNum(req, resp); } // 添加收藏夹 if (op.equals("addfavorite")) { addfavorite(req, resp); } // 显示收藏夹 if (op.equals("showfavorite")) { showfavorite(req, resp); } // 删除收藏夹 if (op.equals("delFavorite")) { delFavorite(req, resp); } // 删除收藏夹 if (op.equals("buyNow")) { buNow(req, resp); } } } private void delFavorite(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException { String book_id = req.getParameter("book_id"); service.delFavorite(book_id); HttpSession session = req.getSession(); List<Favorite> lists = (List<Favorite>) session.getAttribute("favorite"); Iterator<Favorite> iterator = lists.iterator(); while (iterator.hasNext()) { Favorite favorite = iterator.next(); if (book_id.equals(favorite.getBook().getBook_id())) { iterator.remove();// 使用迭代器的删除方法删除 } } resp.sendRedirect(req.getContextPath() + "/favorite.jsp"); } private void showfavorite(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { HttpSession session = req.getSession(); User user = (User) session.getAttribute("user"); List<Favorite> favorites = service.findFavoriteByUserId(user); session.setAttribute("favorite", favorites); req.getRequestDispatcher("/favorite.jsp").forward(req, resp); } private void addfavorite(HttpServletRequest req, HttpServletResponse resp) throws IOException { HttpSession session = req.getSession(); User user = (User) session.getAttribute("user"); String user_id = user.getId(); String book_id = req.getParameter("book_id"); boolean isExit = service.findFavorite(user_id, book_id); if (isExit == false) { service.addfavorite(user_id, book_id); } } private void changeNum(HttpServletRequest req, HttpServletResponse resp) throws IOException { String num = req.getParameter("num"); String book_id = req.getParameter("book_id"); // 取出购物车 Cart cart = (Cart) req.getSession().getAttribute("cart"); CartItem item = cart.getItmes().get(book_id); item.setQuantity(Integer.parseInt(num)); resp.sendRedirect(req.getContextPath() + "/showCart.jsp"); } private void login(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { String username = req.getParameter("username"); String password = req.getParameter("password"); HttpSession session = req.getSession(); User user = service.login(username, password); if (user.getUsername() != null && user.getUsername() != "") { req.setAttribute("message", "登陆成功"); session.setAttribute("user", user); req.getRequestDispatcher("/message.jsp").forward(req, resp); } else { req.setAttribute("message", "用户名或密码错误，请重新登录"); req.getRequestDispatcher("/message.jsp").forward(req, resp); } } private void layout(HttpServletRequest req, HttpServletResponse resp) { try { HttpSession session = req.getSession(); session.removeAttribute("user");// 获取session对象，从session中移除登陆信息 resp.sendRedirect("../client/ClientServlet?op=category"); } catch (Exception e) { e.printStackTrace(); } } private void register(HttpServletRequest req, HttpServletResponse resp) { try { String username = req.getParameter("username"); String password = req.getParameter("password"); String name = req.getParameter("name"); String sex = req.getParameter("sex"); String tel = req.getParameter("tel"); String address = req.getParameter("address"); boolean isExist = false;// 判断是否存在该用户 if (!username.equals("") && !password.equals("")) { isExist = service.register(username, password, name, sex, tel, address); if (isExist == true) { resp.getWriter().print("<script>alert('该用户已经注册，请直接登录')</script>"); resp.getWriter().print("<script>location.href='../client/ClientServlet?op=category'</script>"); } else { resp.getWriter().write("注册成功!"); resp.getWriter().print("<script>location.href='../client/ClientServlet?op=category'</script>"); } }else { resp.getWriter().print("<script>alert('请填写账号或密码')</script>"); resp.getWriter().print("<script>location.href='../client/ClientServlet?op=category'</script>"); } } catch (Exception e) { e.printStackTrace(); } } private void getCategoryBook(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { List<Book> books = service.getCategoryBook(req.getParameter("cid"));// 文学艺术类书籍 req.setAttribute("books", books); List<Category> categoryList= managerService.findAllCategory(); req.setAttribute("categoryList", categoryList); req.getRequestDispatcher("/showBook.jsp").forward(req, resp); } private void personInformation(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { String username = req.getParameter("username"); String name = req.getParameter("name"); String sex = req.getParameter("sex"); String tel = req.getParameter("tel"); String address = req.getParameter("address"); service.personInformation(username, name, sex, tel, address); User user = (User) req.getSession().getAttribute("user"); user.setUsername(username); user.setName(name); user.setSex(sex); user.setTel(tel); user.setAddress(address); req.getSession().setAttribute("user", user); resp.getWriter().write("<div style='text-align: center;margin-top: 260px'><img src='" + req.getContextPath() + "/img/duigou.png'/>修改成功！</div>"); } private void personPassword(HttpServletRequest req, HttpServletResponse resp) throws IOException { String username = req.getParameter("username"); String password = req.getParameter("password"); String repassword = req.getParameter("repassword"); String oldPassword = req.getParameter("oldPassword"); if(!repassword.equals(password)) { resp.getWriter().print("<script>alert('两次密码不一致')</script>"); } User user = service.findUserByUserName(username); if(user==null) { resp.getWriter().print("<script>alert('会话失效或未登录,请重新登录！')</script>"); return; } if(!user.getPassword().equals(oldPassword)) { resp.getWriter().print("<script>alert('旧密码输入错误!')</script>"); return; } service.personPassword(password, username); resp.getWriter().write("<div style='text-align: center;margin-top: 260px'><img src='" + req.getContextPath() + "/img/duigou.png'/>修改成功！</div>"); } private void search(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { String search = req.getParameter("search"); List<Book> searchmessage = service.search(search); req.setAttribute("books", searchmessage); req.setAttribute("name", search==null?"":search); req.getRequestDispatcher("/showBook.jsp").forward(req, resp); } private void particulars(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { String book_id = req.getParameter("book_id"); Book book = findBookById(book_id); req.setAttribute("book", book); req.getRequestDispatcher("/particulars.jsp").forward(req, resp); } // 通过书籍id找到书籍信息 private Book findBookById(String book_id) { Book book = service.findBookById(book_id); return book; } private void addCart(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException { String book_id = req.getParameter("book_id"); Book book = findBookById(book_id); HttpSession session = req.getSession(); Cart cart = (Cart) session.getAttribute("cart"); if (cart == null) { cart = new Cart(); cart.addBook(book); cart.setBook(book); session.setAttribute("cart", cart); }else { session.setAttribute("message", "购物车里有商品,请支付之后再来添加!"); req.getRequestDispatcher("../message.jsp").forward(req, resp); return; } req.getRequestDispatcher("../showCart.jsp").forward(req, resp); } private void delItem(HttpServletRequest req, HttpServletResponse resp) throws IOException { String book_id = req.getParameter("book_id"); Cart cart = (Cart) req.getSession().getAttribute("cart"); cart.getItmes().remove(book_id); req.getSession().removeAttribute("cart"); resp.sendRedirect(req.getContextPath() + "/showCart.jsp"); } private void buNow(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException { Cart cart1 = (Cart) req.getSession().getAttribute("cart"); if(cart1==null) { Cart cart = new Cart(); String book_id = req.getParameter("book_id"); Book book = findBookById(book_id); cart.addBook(book); cart.setBook(book); req.getSession().setAttribute("cart", cart); }else { req.getSession().setAttribute("message", "购物车里有商品,请支付之后再来添加!"); req.getRequestDispatcher("../message.jsp").forward(req, resp); return; } req.getRequestDispatcher("../showCart.jsp").forward(req, resp); } @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { doGet(req, resp); } }以上就是“Java实现图片展览馆管理系统的代码”这篇文章的所有内容，感谢各位的阅读！相信大家阅读完这篇文章都有很大的收获，小编每天都会为大家更新不同的知识，如果还想学习更多的知识，请关注亿速云行业资讯频道。
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