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<Category> 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<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<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<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));           // 获取产品属性信息         List<PropertyValue> pvs = propertyValueDAO.list(p.getId());           // 获取产品评价信息         List<Review> 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<Product> 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<OrderItem> 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<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";     }       /**      * 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<OrderItem> 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<OrderItem> 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<OrderItem> 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<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<Order> 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"%>   <!DOCTYPE html> <html> <head>	<title>用户登录</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>用户登录</h4>	<div class="input">	<span>用户名/邮箱 <label >*</label></span>	<input type="text" name="ue" placeholder="请输入用户名" required="required">	</div>	<div class="input">	<span>密码 <label >*</label></span>	<input type="text" name="password" placeholder="请输入密码" 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("<script>");         out.write("alert('插入分类成功！');");         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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