Java如何實現共享租車信息管理系統

這篇文章主要介紹Java如何實現共享租車信息管理系統，文中介紹的非常詳細，具有一定的參考價值，感興趣的小伙伴們一定要看完！

基于servlet+jsp+jdbc的后臺管理系統，包含5個模塊：汽車賬戶部管理、租車賬戶部管理、汽車信息管理表、租車記錄表、租車租聘表。功能完整，均能實現增刪查改。

運行環境： jdk8+tomcat8.5+mysql5.7+Eclipse

項目技術： servlet+jsp+jdbc+easyui+jquery

主頁登陸注冊業務：

public class ForeServlet extends BaseForeServlet {
 
    /**
     * 顯示主頁
     *
     * @param request
     * @param response
     * @param page
     * @return
     */
    public String home(HttpServletRequest request, HttpServletResponse response, Page page) {
        System.out.println("調用了 ForeServlet home方法");
 
        List<Category> cs = new CategoryDAO().list();
        new ProductDAO().fill(cs);
        new ProductDAO().fillByRow(cs);
        request.setAttribute("cs", cs);
        return "home.jsp";
    }
 
    /**
     * 注冊
     *
     * @param request
     * @param response
     * @param page
     * @return
     */
    public String register(HttpServletRequest request, HttpServletResponse response, Page page) {
        System.out.println("調用了 ForeServlet register方法");
 
        Map<String, String> params = new HashMap<>();
        InputStream inputStream = super.parseUpload(request, params);
        System.out.println(params);
 
        String name = params.get("name");
        String password = params.get("password");
        System.out.println(name);
 
        // 判斷用戶名是否存在
        boolean exist = userDAO.isExists(name);
        if (exist) {
            request.setAttribute("msg", "用戶名已經被使用");
            return "register.jsp";
        }
 
        User user = new User();
        user.setName(name);
        user.setPassword(password);
        System.out.println(user.getName());
        System.out.println(user.getPassword());
 
        userDAO.add(user);
 
        return "@registerSuccess.jsp";
    }
 
    /**
     * 登錄
     *
     * @param request
     * @param response
     * @param page
     * @return
     */
    public String login(HttpServletRequest request, HttpServletResponse response, Page page) {
        System.out.println("調用了 ForeServlet login方法");
 
        Map<String, String> params = new HashMap<>();
        InputStream inputStream = super.parseUpload(request, params);
        System.out.println(params);
 
        String name = params.get("name");
        String password = params.get("password");
 
        // 登錄
        User user = userDAO.get(name, password);
 
        if (null == user) {
            request.setAttribute("msg", "賬號密碼錯誤");
            return "login.jsp";
        }
 
        // 將賬號密碼儲存在Session中
        request.getSession().setAttribute("user", user);
        return "@forehome";
    }
 
    /**
     * 登出
     *
     * @param request
     * @param response
     * @param page
     * @return
     */
    public String logout(HttpServletRequest request, HttpServletResponse response, Page page) {
        System.out.println("調用了 ForeServlet logout方法");
 
        request.getSession().removeAttribute("user");
        return "@forehome";
    }
 
    /**
     * 檢查用戶是否登錄
     *
     * @param request
     * @param response
     * @param page
     * @return
     */
    public String checkLogin(HttpServletRequest request, HttpServletResponse response, Page page) {
        User user = (User) request.getSession().getAttribute("user");
        if (user != null) {
            return "%success";
        }
        return "%fail";
    }
 
    /**
     * 模態登錄框通過 Ajax 方法登錄
     *
     * @param request
     * @param response
     * @param page
     * @return
     */
    public String loginAjax(HttpServletRequest request, HttpServletResponse response, Page page) {
        String name = request.getParameter("name");
        String password = request.getParameter("password");
 
        User user = userDAO.get(name, password);
        if (user == null)
            return "%fail";
 
        request.getSession().setAttribute("user", user);
        return "%success";
    }
 
    /**
     * 顯示產品頁
     *
     * @param request
     * @param response
     * @param page
     * @return
     */
    public String product(HttpServletRequest request, HttpServletResponse response, Page page) {
        System.out.println("調用了 ForeServlet product方法");
 
        int pid = Integer.parseInt(request.getParameter("pid"));
        Product p = productDAO.get(pid);
 
        // 獲取產品的single圖片和detail圖片
        List<ProductImage> productSingleImages = productImageDAO.list(p, ProductImageDAO.type_single);
        List<ProductImage> productDetailImages = productImageDAO.list(p, ProductImageDAO.type_detail);
        p.setProductSingleImages(productSingleImages);
        p.setProductDetailImages(productDetailImages);
        //p.setFirstProductImage(productSingleImages.get(0));
 
        // 獲取產品屬性信息
        List<PropertyValue> pvs = propertyValueDAO.list(p.getId());
 
        // 獲取產品評價信息
        List<Review> reviews = reviewDAO.list(p.getId());
 
        // 設置產品銷量數和評價數
        productDAO.setSaleAndReviewNumber(p);
 
        request.setAttribute("p", p);
        request.setAttribute("pvs", pvs);
        request.setAttribute("reviews", reviews);
 
        return "product.jsp";
    }
 
    /**
     * 分類頁面
     *
     * @return
     */
    public String category(HttpServletRequest request, HttpServletResponse response, Page page) {
        System.out.println("調用了ForeServlet category方法");
 
        int cid = Integer.parseInt(request.getParameter("cid"));
 
        // 獲取分類對象并為填充產品對象、銷量、評價
        Category c = new CategoryDAO().get(cid);
        new ProductDAO().fill(c);
        new ProductDAO().setSaleAndReviewNumber(c.getProducts());
 
        // 根據獲取的排序方式進行排序
        String sort = request.getParameter("sort");
        if (null != sort) {
            switch (sort) {
                case "review":
                    Collections.sort(c.getProducts(), new ProductReviewComparator());
                    break;
                case "date":
                    Collections.sort(c.getProducts(), new ProductDateComparator());
                    break;
                case "saleCount":
                    Collections.sort(c.getProducts(), new ProductSaleCountComparator());
                    break;
                case "price":
                    Collections.sort(c.getProducts(), new ProductPriceComparator());
                    break;
                case "all":
                    Collections.sort(c.getProducts(), new ProductAllComparator());
                    break;
            }
        }
 
        // 排序完成后，將分類對象添加到域對象 request 中
        request.setAttribute("c", c);
        return "category.jsp";
    }
 
    /**
     * 搜索功能
     *
     * @param request
     * @param response
     * @param page
     * @return
     */
    public String search(HttpServletRequest request, HttpServletResponse response, Page page) {
        System.out.println("調用了ForeServlet search方法");
 
        String keyword = request.getParameter("keyword");
        List<Product> ps = null;
 
        // 加入異常，防止崩潰
        try {
            ps = productDAO.search(keyword, 0, 50);
        } catch (Exception e) {
            e.printStackTrace();
        }
 
        // 設置產品的銷量和評論
        productDAO.setSaleAndReviewNumber(ps);
 
        request.setAttribute("ps", ps);
        return "searchResult.jsp";
    }
 
    /**
     * 立即購買
     *
     * @param request
     * @param response
     * @param page
     * @return
     */
    public String buyone(HttpServletRequest request, HttpServletResponse response, Page page) {
        System.out.println("調用了ForeServlet buyone方法");
 
        int pid = Integer.parseInt(request.getParameter("pid"));
        int num = Integer.parseInt(request.getParameter("num"));
 
        Product p = productDAO.get(pid);
        User user = (User) request.getSession().getAttribute("user");
        List<OrderItem> ois = orderItemDAO.listByUser(user.getId());
 
        int oiid = 0;
        boolean found = false;
 
        // 遍歷訂單，如果訂單已存在對應的產品，就在對應購物車的基礎上調整數量
        if (null != ois) {
            for (OrderItem oi : ois) {
                if (oi.getProduct().getId() == p.getId()) {
                    oi.setNumber(oi.getNumber() + num);
                    orderItemDAO.update(oi);
 
                    found = true;
                    oiid = oi.getId();
                    break;
                }
            }
        }
 
        // 如果沒找到對應的商品，則新建一條訂單項
        if (!found) {
            OrderItem oi = new OrderItem();
            oi.setUser(user);
            oi.setProduct(p);
            oi.setNumber(num);
            orderItemDAO.add(oi);
            oiid = oi.getId();
        }
 
        return "@forebuy?oiid=" + oiid;
    }
 
    /**
     * 結算頁面
     *
     * @param request
     * @param response
     * @param page
     * @return
     */
    public String buy(HttpServletRequest request, HttpServletResponse response, Page page) {
        System.out.println("調用了ForeServlet buy方法");
 
        String[] oiids = request.getParameterValues("oiid");
        List<OrderItem> ois = new ArrayList<>();
        float total = 0;
 
        for (String strid : oiids) {
            int oiid = Integer.parseInt(strid);
            OrderItem oi = orderItemDAO.get(oiid);
            total += oi.getProduct().getPromotePrice() * oi.getNumber();
            ois.add(oi);
        }
 
        request.getSession().setAttribute("ois", ois);
        request.setAttribute("total", total);
        return "buy.jsp";
    }
 
    /**
     * 購物車
     *
     * @param request
     * @param response
     * @param page
     * @return
     */
    public String cart(HttpServletRequest request, HttpServletResponse response, Page page) {
        System.out.println("調用了ForeServlet cart方法");
 
        User user = (User) request.getSession().getAttribute("user");
        List<OrderItem> ois = orderItemDAO.listByUser(user.getId());
        request.setAttribute("ois", ois);
        return "cart.jsp";
    }
 
    /**
     * 加入購物車
     *
     * @param request
     * @param response
     * @param page
     * @return
     */
    public String addCart(HttpServletRequest request, HttpServletResponse response, Page page) {
        System.out.println("調用了ForeServlet addCart方法");
 
        int pid = Integer.parseInt(request.getParameter("pid"));
        int num = Integer.parseInt(request.getParameter("num"));
 
        Product p = productDAO.get(pid);
        User user = (User) request.getSession().getAttribute("user");
        List<OrderItem> ois = orderItemDAO.listByUser(user.getId());
 
        int oiid = 0;
        boolean found = false;
 
        // 遍歷訂單，如果訂單已存在對應的產品，就在對應購物車的基礎上調整數量
        if (null != ois) {
            for (OrderItem oi : ois) {
                if (oi.getProduct().getId() == p.getId()) {
                    oi.setNumber(oi.getNumber() + num);
                    orderItemDAO.update(oi);
 
                    found = true;
                    oiid = oi.getId();
                    break;
                }
            }
        }
 
        // 如果沒找到對應的商品，則新建一條訂單項
        if (!found) {
            OrderItem oi = new OrderItem();
            oi.setUser(user);
            oi.setProduct(p);
            oi.setNumber(num);
            orderItemDAO.add(oi);
            oiid = oi.getId();
        }
 
        return "%success";
    }
 
    /**
     * 更改當前訂單項的內容
     *
     * @param request
     * @param response
     * @param page
     * @return
     * @throws UnsupportedEncodingException
     */
    public String changeOrderItem(HttpServletRequest request, HttpServletResponse response, Page page) throws UnsupportedEncodingException {
        System.out.println("調用了ForeServlet changeOrderItem方法");
 
        User user = (User) request.getSession().getAttribute("user");
        if (null == user)
            return "%fail";
 
        int pid = Integer.parseInt(request.getParameter("pid"));
        int number = Integer.parseInt(request.getParameter("number"));
        List<OrderItem> ois = orderItemDAO.listByUser(user.getId());
        for (OrderItem oi : ois) {
            if (oi.getProduct().getId() == pid) {
                oi.setNumber(number);
                orderItemDAO.update(oi);
                break;
            }
        }
        return "%success";
    }
 
    /**
     * 刪除訂單項
     *
     * @param request
     * @param response
     * @param page
     * @return
     * @throws UnsupportedEncodingException
     */
    public String deleteOrderItem(HttpServletRequest request, HttpServletResponse response, Page page) throws UnsupportedEncodingException {
        System.out.println("調用了ForeServlet deleteOrderItem方法");
 
        User user = (User) request.getSession().getAttribute("user");
        if (null == user)
            return "%fail";
 
        int oiid = Integer.parseInt(request.getParameter("oiid"));
        orderItemDAO.delete(oiid);
        return "%success";
    }
 
    /**
     * 創建訂單
     *
     * @param request
     * @param response
     * @param page
     * @return
     * @throws UnsupportedEncodingException
     */
    public String createOrder(HttpServletRequest request, HttpServletResponse response, Page page) throws UnsupportedEncodingException {
        System.out.println("調用了ForeServlet createOrder方法");
 
        // 防止post方法中文亂碼
        request.setCharacterEncoding("UTF-8");
 
        User user = (User) request.getSession().getAttribute("user");
 
        List<OrderItem> ois = (List<OrderItem>) request.getSession().getAttribute("ois");
        if (ois.isEmpty())
            return "@login.jsp";
 
        String address = request.getParameter("address");
        String post = request.getParameter("post");
        String reciver = request.getParameter("reciver");
        String mobile = request.getParameter("mobile");
 
        Order order = new Order();
        String orderCode = new SimpleDateFormat("yyyyMMddHHmmss").format(new Date());
 
        order.setOrderCode(orderCode);
        order.setAddress(address);
        order.setPost(post);
        order.setReceiver(reciver);
        order.setMobile(mobile);
        order.setUserMessage("默認內容");
        order.setCreateDate(new Date());
        order.setUser(user);
        order.setStatus(OrderDAO.waitPay);
 
        orderDAO.add(order);
 
        // 統計總金額并設置每個訂單項的所屬訂單
        float total = 0;
        for (OrderItem oi : ois) {
            oi.setOrder(order);
            orderItemDAO.update(oi);
 
            total += oi.getProduct().getPromotePrice() * oi.getNumber();
        }
 
        return "@forealipay?oid=" + order.getId() + "&total=" + total;
    }
 
    /**
     * 支付界面
     *
     * @param request
     * @param response
     * @param page
     * @return
     */
    public String alipay(HttpServletRequest request, HttpServletResponse response, Page page) {
        System.out.println("調用了ForeServlet alipay方法");
 
        return "alipay.jsp";
    }
 
    /**
     * 支付完成界面
     * @param request
     * @param response
     * @param page
     * @return
     */
    public String payed(HttpServletRequest request, HttpServletResponse response, Page page) {
        System.out.println("調用了ForeServlet payed方法");
 
        int oid = Integer.parseInt(request.getParameter("oid"));
        Order order = orderDAO.get(oid);
 
        order.setStatus(OrderDAO.waitDelivery);
        order.setPayDate(new Date());
        orderDAO.update(order);
 
        request.setAttribute("o", order);
        return "payed.jsp";
    }
 
    /**
     * 我的訂單頁面
     * @param request
     * @param response
     * @param page
     * @return
     */
    public String bought(HttpServletRequest request, HttpServletResponse response, Page page) {
        System.out.println("調用了ForeServlet bought方法");
 
        User user = (User) request.getSession().getAttribute("user");
        List<Order> os = orderDAO.list(user.getId(), OrderDAO.delete);
 
        orderItemDAO.fill(os);
 
        request.setAttribute("os", os);
        return "bought.jsp";
    }
 
 
 
}

用戶登陸頁面：

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
 
<!DOCTYPE html>
<html>
<head>
	<title>用戶登錄</title>
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
	<link type="text/css" rel="stylesheet" href="<%=request.getContextPath()%>/css/bootstrap.css" rel="external nofollow" >
	<link type="text/css" rel="stylesheet" href="<%=request.getContextPath()%>/css/style.css" rel="external nofollow" >
	<script type="text/javascript" src="<%=request.getContextPath()%>/js/jquery.min.js"></script>
	<script type="text/javascript" src="<%=request.getContextPath()%>/js/bootstrap.min.js"></script>
	<script type="text/javascript" src="<%=request.getContextPath()%>/js/simpleCart.min.js"></script>
</head>
<body>
 
	
 
 
 
 
 
	<!--header-->
	<jsp:include page="header.jsp">
		<jsp:param name="flag" value="9"></jsp:param>
	</jsp:include>
	<!--//header-->
 
	
	<!--account-->
	<div class="account">
		<div class="container">
			<div class="register">
				<c:if test="${!empty msg }">
					<div class="alert alert-success">${msg }</div>
				</c:if>
				<c:if test="${!empty failMsg }">
					<div class="alert alert-danger">${failMsg }</div>
				</c:if>
 
				<form action="<%=request.getContextPath()%>/user_login" method="post">
					<div class="register-top-grid">
						<h4>用戶登錄</h4>
						<div class="input">
							<span>用戶名/郵箱 <label >*</label></span>
							<input type="text" name="ue" placeholder="請輸入用戶名" required="required">
						</div>
						<div class="input">
							<span>密碼 <label >*</label></span>
							<input type="text" name="password" placeholder="請輸入密碼" required="required">
						</div>
 
						<div class="clearfix"> </div>
					</div>
					<div class="register-but text-center">
						<input type="submit" value="提交">
						<div class="clearfix"> </div>
					</div>
				</form>
				<div class="clearfix"> </div>
			</div>
	    </div>
	</div>
	<!--//account-->
 
	
 
 
 
 
	<!--footer-->
	<jsp:include page="footer.jsp"></jsp:include>
	<!--//footer-->
 
	
</body>
</html>

添加類型業務：

@WebServlet("/addCategoryServlet")
public class AddCategoryServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");
        String a = request.getParameter("parentId");
        String b = request.getParameter("className");
 
        System.out.println("parentId"+a);
        System.out.println("className"+b);
 
        Category category = new Category();
        category.setCategory_parentid(Integer.valueOf(a));
        category.setCategory_name(b);
 
        CategoryService service = new CategoryServiceImpl();
        service.addCategory(category);
 
        PrintWriter out = response.getWriter();
        out.write("<script>");
        out.write("alert('插入分類成功！');");
        out.write("location.href='/HOMEECMS/categoryListServlet'");
        out.write("</script>");
        out.close();
 
//        request.getRequestDispatcher("").forward(request,response);
    }
 
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doPost(request,response);
    }
}

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