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

适用

课程设计，大作业，毕业设计，项目练习，学习演示等

			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);

                + "/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 {

        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>");
    }

                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();

			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);

            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) {

            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 {

			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());

	}
	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();

        	  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()