Java毕业设计实战之图片展览馆管理系统的实现

Java毕业设计实战之图片展览馆管理系统的实现

一、项目运行

环境配置：

Jdk1.8 + Tomcat8.5 + mysql + Eclispe（IntelliJ IDEA,Eclispe,MyEclispe,Sts都支持）

项目技术：

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("");

resp.getWriter().print("");

return;

}

try {

service.deleteByNumber(orderNumber);

resp.getWriter().print("");

resp.sendRedirect("../admin/managerOrder.jsp");

}catch (Exception e) {

resp.getWriter().print("");

return;

}

}

private void faHuo(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

String ordernum = req.getParameter("ordernum");

service.faHuo(ordernum);

List 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 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 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 oItems = new ArrayList();

for (Map.Entry 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,KKfLk 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 findListByBookName = service.findListByBookName(name);

List 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 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("

}

private void findUsers(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

List 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("

}

//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("");

return;

}

Administrator admin = service.findAdminByUsername(username);

if(!admin.getPassword().equals(oldPassword)) {

resp.getWriter().print("");

return;

}

service.managerPassword(username, password);

resp.getWriter().write("

}

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 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 items = new ArrayList();

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("

}

// 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("");

resp.getWriter().print("");

return;

}

service.addCategory(category);// 调用添加方法

resp.getWriter().write("

} catch (Exception e) {

e.printStackTrace();

}

}

private void getCategoryBook(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

List books = service.getCategoryBook(req.getParameter("cid"));// 文学艺术类书籍

List 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 = 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("

}

private void delBook(HttpServletRequest req, HttpServletResponse resp) throws IOException {

String book_id = req.getParameter("book_id");

service.delBook(book_id);

resp.getWriter().write("

}

private void categoryList(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

List 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("");

resp.getWriter().print("");

return;

}

service.editCategory(category);

resp.getWriter().write("

}

private void delCategory(HttpServletRequest req, HttpServletResponse resp) throws IOException {

String category_id = req.getParameter("category_id");

service.delCategory(category_id);

resp.getWriter().write("

}

// 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 lists = (List) session.getAttribute("favorite");

Iterator 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 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("");

resp.getWriter().print("");

} else {

resp.getWriter().write("注册成功!");

resp.getWriter().print("");

}

}else {

resp.getWriter().print("");

resp.getWriter().print("");

}

} catch (Exception e) {

e.printStackTrace();

}

}

private void getCategoryBook(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

List books = service.getCategoryBook(req.getParameter("cid"));// 文学艺术类书籍

req.setAttribute("books", books);

List 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("

}

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("");

}

User user = service.findUserByUserName(username);

if(user==null) {

resp.getWriter().print("");

return;

}

if(!user.getPassword().equals(oldPassword)) {

resp.getWriter().print("");

return;

}

service.personPassword(password, username);

resp.getWriter().write("

}

private void search(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

String search = req.getParameter("search");

List 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);

}

}

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