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如何用Java代码实现网上商城系统

花匠小妙招
2024-12-02 14:25

发布时间：2021-11-11 21:03:52 阅读：209 作者：柒染栏目：开发技术

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一、项目简述（+需求文档+PPT）

功能：主页显示热销商品；所有商品展示，可进行商品搜索；点击商品进入商品详情页，显示库存，具有立即购买和加入购物车功能，可增减购买商品数量亦可手动输入（同时验证库存），热销商品展示。立即购买进入确认订单页面，可选择已经添加的地址，亦可新增地址。（同时验证库存），可选择购买哪些商品，可删除不需要的商品。点击结算进入确认订单页面，确认后提交订单，订单重复提交给予响应，库存不足或商品下架给予响应。后台管理：（修改密码等），商品管理（商品批量添加、上下架、库存维护等），订单管理。

二、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： JSP + C3P0+ Servlert + html+ css + JavaScript + JQuery + Ajax + Fileupload等等。

如何用Java代码实现网上商城系统

后台管理-主页操作代码：

@Controller public class AdminHomeController extends BaseController { @Resource(name = "adminService") private AdminService adminService; @Resource(name = "productOrderService") private ProductOrderService productOrderService; @Resource(name = "productService") private ProductService productService; @Resource(name = "userService") private UserService userService; @RequestMapping(value = "admin", method = RequestMethod.GET) public String goToPage(HttpSession session, Map<String, Object> map) throws ParseException { logger.info("获取管理员信息"); Object adminId = checkAdmin(session); if (adminId == null) { return "redirect:/admin/login"; } Admin admin = adminService.get(null, Integer.parseInt(adminId.toString())); map.put("admin", admin); logger.info("获取统计信息"); Integer productTotal = productService.getTotal(null, new Byte[]{0, 2}); Integer userTotal = userService.getTotal(null); Integer orderTotal = productOrderService.getTotal(null, new Byte[]{3}); logger.info("获取图表信息"); map.put("jsonObject", getChartData(null,null,7)); map.put("productTotal", productTotal); map.put("userTotal", userTotal); map.put("orderTotal", orderTotal); logger.info("转到后台管理-主页"); return "admin/homePage"; } @RequestMapping(value = "admin/home", method = RequestMethod.GET) public String goToPageByAjax(HttpSession session, Map<String, Object> map) throws ParseException { logger.info("获取管理员信息"); Object adminId = checkAdmin(session); if (adminId == null) { return "admin/include/loginMessage"; } Admin admin = adminService.get(null, Integer.parseInt(adminId.toString())); map.put("admin", admin); logger.info("获取统计信息"); Integer productTotal = productService.getTotal(null, new Byte[]{0, 2}); Integer userTotal = userService.getTotal(null); Integer orderTotal = productOrderService.getTotal(null, new Byte[]{3}); logger.info("获取图表信息"); map.put("jsonObject", getChartData(null, null,7)); logger.info("获取图表信息"); map.put("jsonObject", getChartData(null,null,7)); map.put("productTotal", productTotal); map.put("userTotal", userTotal); map.put("orderTotal", orderTotal); logger.info("转到后台管理-主页-ajax方式"); return "admin/homeManagePage"; } @ResponseBody @RequestMapping(value = "admin/home/charts", method = RequestMethod.GET, produces = "application/json;charset=utf-8") public String getChartDataByDate(@RequestParam(required = false) String beginDate, @RequestParam(required = false) String endDate) throws ParseException { if (beginDate != null && endDate != null) { SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd"); return getChartData(simpleDateFormat.parse(beginDate), simpleDateFormat.parse(endDate),7).toJSONString(); } else { return getChartData(null, null,7).toJSONString(); } } private JSONObject getChartData(Date beginDate,Date endDate,int days) throws ParseException { JSONObject jsonObject = new JSONObject(); SimpleDateFormat time = new SimpleDateFormat("yyyy-MM-dd", Locale.UK); SimpleDateFormat time2 = new SimpleDateFormat("MM/dd", Locale.UK); SimpleDateFormat timeSpecial = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.UK); if (beginDate == null || endDate == null) { Calendar cal = Calendar.getInstance(); cal.add(Calendar.DATE, 1-days); beginDate = time.parse(time.format(cal.getTime())); cal = Calendar.getInstance(); endDate = cal.getTime(); } else { beginDate = time.parse(time.format(beginDate)); endDate = timeSpecial.parse(time.format(endDate) + " 23:59:59"); } logger.info("根据订单状态分类"); int[] orderUnpaidArray = new int[7]; int[] orderNotShippedArray = new int[7]; int[] orderUnconfirmedArray = new int[7]; int[] orderSuccessArray = new int[7]; int[] orderTotalArray = new int[7]; logger.info("从数据库中获取统计的订单集合数据"); List<OrderGroup> orderGroupList = productOrderService.getTotalByDate(beginDate, endDate); JSONArray dateStr = new JSONArray(days); for (int i = 0; i < days; i++) { Calendar cal = Calendar.getInstance(); cal.setTime(beginDate); cal.add(Calendar.DATE, i); String formatDate = time2.format(cal.getTime()); dateStr.add(formatDate); int orderCount = 0; for(int j = 0; j < orderGroupList.size(); j++){ OrderGroup orderGroup = orderGroupList.get(j); if(orderGroup.getProductOrder_pay_date().equals(formatDate)){ orderGroupList.remove(j); switch (orderGroup.getProductOrder_status()) { case 0: orderUnpaidArray[i] = orderGroup.getProductOrder_count(); break; case 1: orderNotShippedArray[i] = orderGroup.getProductOrder_count(); break; case 2: orderUnconfirmedArray[i] = orderGroup.getProductOrder_count(); break; case 3: orderSuccessArray[i] = orderGroup.getProductOrder_count(); break; } orderCount += orderGroup.getProductOrder_count(); } } orderTotalArray[i] = orderCount; } logger.info("返回结果集map"); jsonObject.put("orderTotalArray", orderTotalArray); jsonObject.put("orderUnpaidArray", orderUnpaidArray); jsonObject.put("orderNotShippedArray", orderNotShippedArray); jsonObject.put("orderUnconfirmedArray", orderUnconfirmedArray); jsonObject.put("orderSuccessArray", orderSuccessArray); jsonObject.put("dateStr",dateStr); return jsonObject; } }

前台主页代码：

@Controller public class ForeHomeController extends BaseController { @Resource(name = "userService") private UserService userService; @Resource(name="categoryService") private CategoryService categoryService; @Resource(name="productService") private ProductService productService; @Resource(name="productImageService") private ProductImageService productImageService; @RequestMapping(value = "/", method = RequestMethod.GET) public String goToPage(HttpSession session, Map<String, Object> map) { logger.info("检查用户是否登录"); Object userId = checkUser(session); if (userId != null) { logger.info("获取用户信息"); User user = userService.get(Integer.parseInt(userId.toString())); map.put("user", user); } logger.info("获取产品分类列表"); List<Category> categoryList = categoryService.getList(null,null); logger.info("获取每个分类下的产品列表"); for(Category category : categoryList){ List<Product> productList = productService.getList( new Product().setProduct_category(category), new Byte[]{0, 2}, new OrderUtil("product_sale_count", true), new PageUtil(0, 8) ); if (productList != null) { for (Product product : productList) { Integer product_id = product.getProduct_id(); product.setSingleProductImageList( productImageService.getList( product_id, (byte) 0, new PageUtil(0, 1) ) ); } } category.setProductList(productList); } map.put("categoryList",categoryList); logger.info("获取促销产品列表"); List<Product> specialProductList = productService.getList( null, new Byte[]{2}, null, new PageUtil(0, 6) ); map.put("specialProductList", specialProductList); logger.info("转到前台主页"); return "fore/homePage"; } @RequestMapping(value = "error", method = RequestMethod.GET) public String goToErrorPage() { return "fore/errorPage"; } @ResponseBody @RequestMapping(value = "product/nav/{category_id}", method = RequestMethod.GET, produces = "application/json;charset=utf-8") public String getProductByNav(@PathVariable("category_id") Integer category_id) { JSONObject object = new JSONObject(); if (category_id == null) { object.put("success", false); return object.toJSONString(); } logger.info("获取分类ID为{}的产品标题数据", category_id); List<Product> productList = productService.getTitle( new Product().setProduct_category(new Category().setCategory_id(category_id)), new PageUtil(0, 40) ); List<List<Product>> complexProductList = new ArrayList<>(8); List<Product> products = new ArrayList<>(5); for (int i = 0; i < productList.size(); i++) { if (i % 5 == 0) { complexProductList.add(products); products = new ArrayList<>(5); } products.add(productList.get(i)); } complexProductList.add(products); Category category = new Category().setCategory_id(category_id).setComplexProductList(complexProductList); object.put("success", true); object.put("category", category); return object.toJSONString(); } }

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