实现的功能有：
管理员：学生管理、教师管理、阅览室类型管理、阅览室管理（座位生成等）、学生信用积分管理、座位预约统计管理等。
学生：登录、修改个人信息、阅览室查看、选座信息查看、选座、取消选座等。
教师：登录、阅览室管理、学生信用管理：可根据学生表现进行扣分、奖励等，扣分达到设定的值则无法进行选座。
运行环境：windows/Linux均可、jdk1.8、mysql5.7、idea/eclipse均可。
订单管理控制层：
@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);
}
}
管理控制层：
@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);
}
}
购物车控制层：
//购物车
public class Cart implements Serializable {
// CartItem是购物项
private Map<String, CartItem> itmes = new HashMap<String, CartItem>();
private int totalQuantity;// 总数量
private float totalMoney;// 总金额
private Book book;
public int getTotalQuantity() {
totalQuantity = 0;
for (Map.Entry<String, CartItem> me : itmes.entrySet()) {
totalQuantity += me.getValue().getQuantity();
}
return totalQuantity;
}
public void setTotalQuantity(int totalQuantity) {
this.totalQuantity = totalQuantity;
}
public double getTotalMoney() {
totalMoney = 0;
for (Map.Entry<String, CartItem> me : itmes.entrySet()) {
totalMoney += me.getValue().getMoney();
}
return totalMoney;
}
public void setTotalMoney(float totalMoney) {
this.totalMoney = totalMoney;
}
public Map<String, CartItem> getItmes() {
return itmes;
}
// 向购物车中添加一本书
public void addBook(Book book) {
if (itmes.containsKey(book.getBook_id())) {
// 有对应的购物项
CartItem item = itmes.get(book.getBook_id());
item.setQuantity(item.getQuantity() + 1);
} else {
CartItem item = new CartItem(book);
item.setQuantity(1);
itmes.put(book.getBook_id(), item);
}
}
public Book getBook() {
return book;
}
public void setBook(Book book) {
this.book = book;
}
public void setItmes(Map<String, CartItem> itmes) {
this.itmes = itmes;
}
}