Java如何实现共享租车信息管理系统

这篇文章主要介绍Java如何实现共享租车信息管理系统，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！

基于servlet+jsp+jdbc的后台管理系统，包含5个模块：汽车账户部管理、租车账户部管理、汽车信息管理表、租车记录表、租车租聘表。功能完整，均能实现增删查改。

运行环境： jdk8+tomcat8.5+mysql5.7+Eclipse

项目技术： servlet+jsp+jdbc+easyui+jquery

主页登陆注册业务：

public class ForeServlet extends BaseForeServlet {     /**     * 显示主页     *     * @param request     * @param response     * @param page     * @return     */    public String home(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了 ForeServlet home方法");         List cs = new CategoryDAO().list();        new ProductDAO().fill(cs);        new ProductDAO().fillByRow(cs);        request.setAttribute("cs", cs);        return "home.jsp";    }     /**     * 注册     *     * @param request     * @param response     * @param page     * @return     */    public String register(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了 ForeServlet register方法");         Map 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);         // 判断用户名是否存在        boolean exist = userDAO.isExists(name);        if (exist) {            request.setAttribute("msg", "用户名已经被使用");            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";    }     /**     * 登录     *     * @param request     * @param response     * @param page     * @return     */    public String login(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了 ForeServlet login方法");         Map params = new HashMap<>();        InputStream inputStream = super.parseUpload(request, params);        System.out.println(params);         String name = params.get("name");        String password = params.get("password");         // 登录        User user = userDAO.get(name, password);         if (null == user) {            request.setAttribute("msg", "账号密码错误");            return "login.jsp";        }         // 将账号密码储存在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("调用了 ForeServlet logout方法");         request.getSession().removeAttribute("user");        return "@forehome";    }     /**     * 检查用户是否登录     *     * @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";    }     /**     * 模态登录框通过 Ajax 方法登录     *     * @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";    }     /**     * 显示产品页     *     * @param request     * @param response     * @param page     * @return     */    public String product(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了 ForeServlet product方法");         int pid = Integer.parseInt(request.getParameter("pid"));        Product p = productDAO.get(pid);         // 获取产品的single图片和detail图片        List productSingleImages = productImageDAO.list(p, ProductImageDAO.type_single);        List productDetailImages = productImageDAO.list(p, ProductImageDAO.type_detail);        p.setProductSingleImages(productSingleImages);        p.setProductDetailImages(productDetailImages);        //p.setFirstProductImage(productSingleImages.get(0));         // 获取产品属性信息        List pvs = propertyValueDAO.list(p.getId());         // 获取产品评价信息        List reviews = reviewDAO.list(p.getId());         // 设置产品销量数和评价数        productDAO.setSaleAndReviewNumber(p);         request.setAttribute("p", p);        request.setAttribute("pvs", pvs);        request.setAttribute("reviews", reviews);         return "product.jsp";    }     /**     * 分类页面     *     * @return     */    public String category(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了ForeServlet category方法");         int cid = Integer.parseInt(request.getParameter("cid"));         // 获取分类对象并为填充产品对象、销量、评价        Category c = new CategoryDAO().get(cid);        new ProductDAO().fill(c);        new ProductDAO().setSaleAndReviewNumber(c.getProducts());         // 根据获取的排序方式进行排序        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，将分类对象添加到域对象 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("调用了ForeServlet search方法");         String keyword = request.getParameter("keyword");        List ps = null;         // 加入异常，防止崩溃        try {            ps = productDAO.search(keyword, 0, 50);        } catch (Exception e) {            e.printStackTrace();        }         // 设置产品的销量和评论        productDAO.setSaleAndReviewNumber(ps);         request.setAttribute("ps", ps);        return "searchResult.jsp";    }     /**     * 立即购买     *     * @param request     * @param response     * @param page     * @return     */    public String buyone(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了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 ois = orderItemDAO.listByUser(user.getId());         int oiid = 0;        boolean found = false;         // 遍历订单，如果订单已存在对应的产品，就在对应购物车的基础上调整数量        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;                }            }        }         // 如果没找到对应的商品，则新建一条订单项        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;    }     /**     * 结算页面     *     * @param request     * @param response     * @param page     * @return     */    public String buy(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了ForeServlet buy方法");         String[] oiids = request.getParameterValues("oiid");        List 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";    }     /**     * 购物车     *     * @param request     * @param response     * @param page     * @return     */    public String cart(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了ForeServlet cart方法");         User user = (User) request.getSession().getAttribute("user");        List ois = orderItemDAO.listByUser(user.getId());        request.setAttribute("ois", ois);        return "cart.jsp";    }     /**     * 加入购物车     *     * @param request     * @param response     * @param page     * @return     */    public String addCart(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了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 ois = orderItemDAO.listByUser(user.getId());         int oiid = 0;        boolean found = false;         // 遍历订单，如果订单已存在对应的产品，就在对应购物车的基础上调整数量        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;                }            }        }         // 如果没找到对应的商品，则新建一条订单项        if (!found) {            OrderItem oi = new OrderItem();            oi.setUser(user);            oi.setProduct(p);            oi.setNumber(num);            orderItemDAO.add(oi);            oiid = oi.getId();        }         return "%success";    }     /**     * 更改当前订单项的内容     *     * @param request     * @param response     * @param page     * @return     * @throws UnsupportedEncodingException     */    public String changeOrderItem(HttpServletRequest request, HttpServletResponse response, Page page) throws UnsupportedEncodingException {        System.out.println("调用了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 ois = orderItemDAO.listByUser(user.getId());        for (OrderItem oi : ois) {            if (oi.getProduct().getId() == pid) {                oi.setNumber(number);                orderItemDAO.update(oi);                break;            }        }        return "%success";    }     /**     * 删除订单项     *     * @param request     * @param response     * @param page     * @return     * @throws UnsupportedEncodingException     */    public String deleteOrderItem(HttpServletRequest request, HttpServletResponse response, Page page) throws UnsupportedEncodingException {        System.out.println("调用了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";    }     /**     * 创建订单     *     * @param request     * @param response     * @param page     * @return     * @throws UnsupportedEncodingException     */    public String createOrder(HttpServletRequest request, HttpServletResponse response, Page page) throws UnsupportedEncodingException {        System.out.println("调用了ForeServlet createOrder方法");         // 防止post方法中文乱码        request.setCharacterEncoding("UTF-8");         User user = (User) request.getSession().getAttribute("user");         List ois = (List) 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("默认内容");        order.setCreateDate(new Date());        order.setUser(user);        order.setStatus(OrderDAO.waitPay);         orderDAO.add(order);         // 统计总金额并设置每个订单项的所属订单        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("调用了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("调用了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";    }     /**     * 我的订单页面     * @param request     * @param response     * @param page     * @return     */    public String bought(HttpServletRequest request, HttpServletResponse response, Page page) {        System.out.println("调用了ForeServlet bought方法");         User user = (User) request.getSession().getAttribute("user");        List os = orderDAO.list(user.getId(), OrderDAO.delete);         orderItemDAO.fill(os);         request.setAttribute("os", os);        return "bought.jsp";    }   }

用户登陆页面：

<%@ page contentType="text/html;charset=UTF-8" language="java" %><%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>                                                                                                                                                        
                
                        
                                                                        
${msg }
                                                                                                        
${failMsg }
                                                                 
                                        
                                                
用户登录
                                                
                                                        用户名/邮箱 *                                                                                                        
                                                
                                                        密码 *                                                                                                        
                                                 
 
                                        
                                        
                                                                                                
 
                                        
                                
                                
 
                        
            
        
                                                      

添加类型业务：

@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("");        out.close(); //        request.getRequestDispatcher("").forward(request,response);    }     protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        doPost(request,response);    }}

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