Java 实战项目锤炼之网上商城系统的实现流程

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。

后台管理-主页操作代码：

/**
 * 后台管理-主页
 */
@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;
 
    /**
     * 转到后台管理-主页
     * @param session session对象
     * @param map 前台传入的map
     * @return 响应数据
     * @throws parseexception 转换异常
     */
    @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");
        //产品总数
        integer producttotal = productservice.gettotal(null, new byte[]{0, 2});
        //用户总数
        integer usertotal = userservice.gettotal(null);
        //订单总数
        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";
    }
 
    /**
     * 转到后台管理-主页（ajax方式）
     * @param session session对象
     * @param map 前台传入的map
     * @return 响应数据
     * @throws parseexception 转换异常
     */
    @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";
    }
 
    /**
     * 按日期查询图表数据（ajax方式）
     * @param begindate 开始日期
     * @param enddate 结束日期
     * @return 响应数据
     * @throws parseexception 转换异常
     */
    @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) {
            //转换日期格式
            simpledateformat simpledateformat = new simpledateformat("yyyy-mm-dd");
            return getchartdata(simpledateformat.parse(begindate), simpledateformat.parse(enddate),7).tojsonstring();
        } else {
            return getchartdata(null, null,7).tojsonstring();
        }
    }
 
    /**
     * 按日期获取图表数据
     * @param begindate 开始日期
     * @param enddate 结束日期
     * @param days 天数
     * @return 图表数据的json对象
     * @throws parseexception 转换异常
     */
    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);
        //如果没有指定开始和结束日期
        if (begindate == null || enddate == null) {
            //指定一周前的日期为开始日期
            calendar cal = calendar.getinstance();
            cal.add(calendar.date, 1-days);
            begindate = time.parse(time.format(cal.gettime()));
            //指定当前日期为结束日期
            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");
        //未付款订单数统计数组
        int[] orderunpaidarray = new int[7];
        //未发货订单数统计叔祖
        int[] ordernotshippedarray = new int[7];
        //未确认订单数统计数组
        int[] orderunconfirmedarray = new int[7];
        //交易成功订单数统计数组
        int[] ordersuccessarray = new int[7];
        //总交易订单数统计数组
        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);
        //初始化日期数组
        jsonarray datestr = new jsonarray(days);
        //按指定的天数进行循环
        for (int i = 0; i < days; i++) {
            //格式化日期串（mm/dd）并放入日期数组中
            calendar cal = calendar.getinstance();
            cal.settime(begindate);
            cal.add(calendar.date, i);
            string formatdate = time2.format(cal.gettime());
            datestr.add(formatdate);
            //该天的订单总数
            int ordercount = 0;
            //循环订单集合数据的结果集
            for(int j = 0; j < ordergrouplist.size(); j++){
                ordergroup ordergroup = ordergrouplist.get(j);
                //如果该订单日期与当前日期一致
                if(ordergroup.getproductorder_pay_date().equals(formatdate)){
                    //从结果集中移除数据
                    ordergrouplist.remove(j);
                    //根据订单状态将统计结果存入对应的订单状态数组中
                    switch (ordergroup.getproductorder_status()) {
                        case 0:
                            //未付款订单
                            orderunpaidarray[i] = ordergroup.getproductorder_count();
                            break;
                        case 1:
                            //未发货订单
                            ordernotshippedarray[i] = ordergroup.getproductorder_count();
                            break;
                        case 2:
                            //未确认订单
                            orderunconfirmedarray[i] = ordergroup.getproductorder_count();
                            break;
                        case 3:
                            //交易成功订单
                            ordersuccessarray[i] = ordergroup.getproductorder_count();
                            break;
                    }
                    //累加当前日期的订单总数
                    ordercount += ordergroup.getproductorder_count();
                }
            }
            //将统计的订单总数存入总交易订单数统计数组
            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：

/**
 * 主页
 */
@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;
 
    //转到前台天猫-主页
    @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";
    }
 
    //转到前台天猫-错误页
    @requestmapping(value = "error", method = requestmethod.get)
    public string gotoerrorpage() {
        return "fore/errorpage";
    }
 
    //获取主页分类下产品信息-ajax
    @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++) {
            //如果临时集合中产品数达到5个，加入到产品二维集合中，并重新实例化临时集合
            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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