Tamll商城管理系统订单模块（2）

创建订单

直接购买商品提交订单

请求后端的地址

http://localhost:8080/tmall/order/create/64?product_number=1

请求方式:Get

携带参数：product_number=2

 //转到前台天猫-订单建立页(直接购买时建立的订单)
    @RequestMapping(value = "order/create/{product_id}", method = RequestMethod.GET)
    public String goToOrderConfirmPage(@PathVariable("product_id") Integer product_id,
                                       @RequestParam(required = false, defaultValue = "1") Short product_number,
                                       Map<String, Object> map,
                                       HttpSession session,
                                       HttpServletRequest request) throws UnsupportedEncodingException {
        logger.info("检查用户是否登录");
        Object userId = checkUser(session);
        User user;
        if (userId != null) {
            logger.info("获取用户信息");
            user = userService.get(Integer.parseInt(userId.toString()));
            map.put("user", user);
        } else {
            return "redirect:/login";
        }
        logger.info("通过产品ID获取产品信息：{}", product_id);
        Product product = productService.get(product_id);
        if (product == null) {
            return "redirect:/";
        }
        logger.info("获取产品的详细信息");
        product.setProduct_category(categoryService.get(product.getProduct_category().getCategory_id()));
        product.setSingleProductImageList(productImageService.getList(product_id, (byte) 0, new PageUtil(0, 1)));

        logger.info("封装订单项对象");
        ProductOrderItem productOrderItem = new ProductOrderItem();
        productOrderItem.setProductOrderItem_product(product);
        productOrderItem.setProductOrderItem_number(product_number);
        productOrderItem.setProductOrderItem_price(product.getProduct_sale_price() * product_number);
        productOrderItem.setProductOrderItem_user(new User().setUser_id(Integer.valueOf(userId.toString())));

        //初始化订单地址信息
        String addressId = "110000";
        String cityAddressId = "110100";
        String districtAddressId = "110101";
        String detailsAddress = null;
        String order_post = null;
        String order_receiver = null;
        String order_phone = null;
        Cookie[] cookies = request.getCookies();
        //如果读取到了浏览器Cookie
        if (cookies != null) {
            for (Cookie cookie : cookies) {
                String cookieName = cookie.getName();
                String cookieValue = cookie.getValue();
                switch (cookieName) {
                    case "addressId":
                        addressId = cookieValue;
                        break;
                    case "cityAddressId":
                        cityAddressId = cookieValue;
                        break;
                    case "districtAddressId":
                        districtAddressId = cookieValue;
                        break;
                    case "order_post":
                        order_post = URLDecoder.decode(cookieValue, "UTF-8");
                        break;
                    case "order_receiver":
                        order_receiver = URLDecoder.decode(cookieValue, "UTF-8");
                        break;
                    case "order_phone":
                        order_phone = URLDecoder.decode(cookieValue, "UTF-8");
                        break;
                    case "detailsAddress":
                        detailsAddress = URLDecoder.decode(cookieValue, "UTF-8");
                        break;
                }
            }
        }
        logger.info("获取省份信息");
        List<Address> addressList = addressService.getRoot();
        logger.info("获取addressId为{}的市级地址信息", addressId);
        List<Address> cityAddress = addressService.getList(null, addressId);
        logger.info("获取cityAddressId为{}的区级地址信息", cityAddressId);
        List<Address> districtAddress = addressService.getList(null, cityAddressId);

        List<ProductOrderItem> productOrderItemList = new ArrayList<>();
        productOrderItemList.add(productOrderItem);

        map.put("orderItemList", productOrderItemList);
        map.put("addressList", addressList);
        map.put("cityList", cityAddress);
        map.put("districtList", districtAddress);
        map.put("orderTotalPrice", productOrderItem.getProductOrderItem_price());

        map.put("addressId", addressId);
        map.put("cityAddressId", cityAddressId);
        map.put("districtAddressId", districtAddressId);
        map.put("order_post", order_post);
        map.put("order_receiver", order_receiver);
        map.put("order_phone", order_phone);
        map.put("detailsAddress", detailsAddress);

        logger.info("转到前台天猫-订单建立页");
        return "fore/productBuyPage";
    }
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断点调试走建立普通订单的流程

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第一步：根据产品id获取产品的信息。为空则返回首页

Product product = productService.get(product_id);
if (product == null) {
    return "redirect:/";
}
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调用业务逻辑层查询出产品的分类信息和图片信息完成product类的set方法赋值

product.setProduct_category(categoryService.get(product.getProduct_category().getCategory_id()));
product.setSingleProductImageList(productImageService.getList(product_id, (byte) 0, new PageUtil(0, 1)));
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封装订单对象

ProductOrderItem productOrderItem = new ProductOrderItem();
productOrderItem.setProductOrderItem_product(product);
productOrderItem.setProductOrderItem_number(product_number);
productOrderItem.setProductOrderItem_price(product.getProduct_sale_price() * product_number);
productOrderItem.setProductOrderItem_user(new User().setUser_id(Integer.valueOf(userId.toString())));
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订单对象结构分析

private Integer productOrderItem_id/*订单项ID*/;
private Short productOrderItem_number/*订单项产品数量*/;
private Double productOrderItem_price/*订单项产品总价格*/;
private String productOrderItem_userMessage/*订单项备注*/;
private Product productOrderItem_product/*订单项对应产品*/;
private ProductOrder productOrderItem_order/*订单项对应订单*/;
private User productOrderItem_user/*订单项对应用户*/;
//订单产品是否已经评价
private Boolean isReview;
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之后通过将初始化的信息加入到cookie和修改购物车之后发送请求走的流程一样

 Cookie[] cookies = request.getCookies();
        //如果读取到了浏览器Cookie
        if (cookies != null) {
            for (Cookie cookie : cookies) {
                String cookieName = cookie.getName();
                String cookieValue = cookie.getValue();
                switch (cookieName) {
                    case "addressId":
                        addressId = cookieValue;
                        break;
                    case "cityAddressId":
                        cityAddressId = cookieValue;
                        break;
                    case "districtAddressId":
                        districtAddressId = cookieValue;
                        break;
                    case "order_post":
                        order_post = URLDecoder.decode(cookieValue, "UTF-8");
                        break;
                    case "order_receiver":
                        order_receiver = URLDecoder.decode(cookieValue, "UTF-8");
                        break;
                    case "order_phone":
                        order_phone = URLDecoder.decode(cookieValue, "UTF-8");
                        break;
                    case "detailsAddress":
                        detailsAddress = URLDecoder.decode(cookieValue, "UTF-8");
                        break;
                }
            }
        }
        logger.info("获取省份信息");
        List<Address> addressList = addressService.getRoot();
        logger.info("获取addressId为{}的市级地址信息", addressId);
        List<Address> cityAddress = addressService.getList(null, addressId);
        logger.info("获取cityAddressId为{}的区级地址信息", cityAddressId);
        List<Address> districtAddress = addressService.getList(null, cityAddressId);

        List<ProductOrderItem> productOrderItemList = new ArrayList<>();
        productOrderItemList.add(productOrderItem);

        map.put("orderItemList", productOrderItemList);
        map.put("addressList", addressList);
        map.put("cityList", cityAddress);
        map.put("districtList", districtAddress);
        map.put("orderTotalPrice", productOrderItem.getProductOrderItem_price());

        map.put("addressId", addressId);
        map.put("cityAddressId", cityAddressId);
        map.put("districtAddressId", districtAddressId);
        map.put("order_post", order_post);
        map.put("order_receiver", order_receiver);
        map.put("order_phone", order_phone);
        map.put("detailsAddress", detailsAddress);

        logger.info("转到前台天猫-订单建立页");
        return "fore/productBuyPage";
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从cookie中获取信息进行封装

之后查询出相关的地址信息进行封装

logger.info("获取省份信息");
List<Address> addressList = addressService.getRoot();
logger.info("获取addressId为{}的市级地址信息", addressId);
List<Address> cityAddress = addressService.getList(null, addressId);
logger.info("获取cityAddressId为{}的区级地址信息", cityAddressId);
List<Address> districtAddress = addressService.getList(null, cityAddressId);
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封装所有集合返回到前端的页面完成测试

map.put("orderItemList", productOrderItemList);
map.put("addressList", addressList);
map.put("cityList", cityAddress);
map.put("districtList", districtAddress);
map.put("orderTotalPrice", productOrderItem.getProductOrderItem_price());

map.put("addressId", addressId);
map.put("cityAddressId", cityAddressId);
map.put("districtAddressId", districtAddressId);
map.put("order_post", order_post);
map.put("order_receiver", order_receiver);
map.put("order_phone", order_phone);
map.put("detailsAddress", detailsAddress);

logger.info("转到前台天猫-订单建立页");
return "fore/productBuyPage";

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java 使用URLEncoder.encode和URLDecoder.decode编解码(utf-8)中文及特殊字符

本文主要介绍Java中，使用URLEncoder.encode和URLDecoder.decode对url地址链接中，中文字符及特殊字符用 UTF-8字符集进行编码和解码的方法，及相关的示例代码。

1、URLEncoder.encode和URLDecoder.decode

URL只能使用英文字母、阿拉伯数字和某些标点符号，不能使用其他文字和符号，即

只有字母和数字[0-9a-zA-Z]、一些特殊符号$-_.+!*'()[不包括双引号]、以及某些保留字（空格转换为+），才可以不经过编码直接用于URL，如果URL中有汉字，就必须编码后使用。

URLDecoder类包含一个decode(String s,String enc)静态方法，它可以将application/x-www-form-urlencoded MIME字符串转成编码前的字符串；

URLEncoder类包含一个encode(String s,String enc)静态方法，它可以将中文字符及特殊字符用转换成application/x-www-form-urlencoded MIME字符串。

2、使用URLEncoder.encode编码

public static String urlEncode(String urlToken) {
    String encoded = null;
    try {
	    //用URLEncoder.encode方法会把空格变成加号（+）,encode之后在替换一下
        encoded = URLEncoder.encode(urlToken, "UTF-8").replace("+", "%20");
    } catch (UnsupportedEncodingException e) {
        logger.error("URLEncode error {}", e);
    }
    return encoded;
}
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3、使用URLEncoder.encode解码

public static String urlEncode(String urlToken) {
    String decoded = null;
    try {
	    decoded =URLDecoder.decode(urlToken, "UTF-8"); 
    } catch (UnsupportedEncodingException e) {
        logger.error("URLEncode error {}", e);
    }
    return decoded;
}
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购物车中的多列表提交订单

购物车的多级订单的提交和之间分析的完全相同

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//转到前台天猫-购物车订单建立页
    @RequestMapping(value = "order/create/byCart", method = RequestMethod.GET)
    public String goToOrderConfirmPageByCart(Map map,
                                             HttpSession session, HttpServletRequest request,
                                             @RequestParam(required = false) Integer[] order_item_list) throws UnsupportedEncodingException {
        logger.info("检查用户是否登录");
        Object userId = checkUser(session);
        User user;
        if (userId != null) {
            logger.info("获取用户信息");
            user = userService.get(Integer.parseInt(userId.toString()));
            map.put("user", user);
        } else {
            return "redirect:/login";
        }
        if (order_item_list == null || order_item_list.length == 0) {
            logger.warn("用户订单项数组不存在，回到购物车页");
            return "redirect:/cart";
        }
        logger.info("通过订单项ID数组获取订单信息");
        List orderItemList = new ArrayList<>(order_item_list.length);
        for (Integer orderItem_id : order_item_list) {
            orderItemList.add(productOrderItemService.get(orderItem_id));
        }
        logger.info("------检查订单项合法性------");
        if (orderItemList.size() == 0) {
            logger.warn("用户订单项获取失败，回到购物车页");
            return "redirect:/cart";
        }
        //动态检测所有的订单
        for (ProductOrderItem orderItem : orderItemList) {
            if(orderItem.getProductOrderItem_user().getUser_id().equals(userId)==false){
//            if (orderItem.getProductOrderItem_user().getUser_id() != userId) {
                logger.warn("用户订单项与用户不匹配，回到购物车页");
                return "redirect:/cart";
            }
            if (orderItem.getProductOrderItem_order() != null) {
                logger.warn("用户订单项不属于购物车，回到购物车页");
                return "redirect:/cart";
            }
        }
        logger.info("验证通过，获取订单项的产品信息");
        double orderTotalPrice = 0.0;
        for (ProductOrderItem orderItem : orderItemList) {
            Product product = productService.get(orderItem.getProductOrderItem_product().getProduct_id());
            product.setProduct_category(categoryService.get(product.getProduct_category().getCategory_id()));
            product.setSingleProductImageList(productImageService.getList(product.getProduct_id(), (byte) 0, new PageUtil(0, 1)));
            orderItem.setProductOrderItem_product(product);
            orderTotalPrice += orderItem.getProductOrderItem_price();
        }
        String addressId = "110000";
        String cityAddressId = "110100";
        String districtAddressId = "110101";
        String detailsAddress = null;
        String order_post = null;
        String order_receiver = null;
        String order_phone = null;
        Cookie[] cookies = request.getCookies();
        if (cookies != null) {
            for (Cookie cookie : cookies) {
                String cookieName = cookie.getName();
                String cookieValue = cookie.getValue();
                switch (cookieName) {
                    case "addressId":
                        addressId = cookieValue;
                        break;
                    case "cityAddressId":
                        cityAddressId = cookieValue;
                        break;
                    case "districtAddressId":
                        districtAddressId = cookieValue;
                        break;
                    case "order_post":
                        order_post = URLDecoder.decode(cookieValue, "UTF-8");
                        break;
                    case "order_receiver":
                        order_receiver = URLDecoder.decode(cookieValue, "UTF-8");
                        break;
                    case "order_phone":
                        order_phone = URLDecoder.decode(cookieValue, "UTF-8");
                        break;
                    case "detailsAddress":
                        detailsAddress = URLDecoder.decode(cookieValue, "UTF-8");
                        break;
                }
            }
        }
        logger.info("获取省份信息");
        List addressList = addressService.getRoot();
        logger.info("获取addressId为{}的市级地址信息", addressId);
        List cityAddress = addressService.getList(null, addressId);
        logger.info("获取cityAddressId为{}的区级地址信息", cityAddressId);
        List districtAddress = addressService.getList(null, cityAddressId);

        map.put("orderItemList", orderItemList);
        map.put("addressList", addressList);
        map.put("cityList", cityAddress);
        map.put("districtList", districtAddress);
        map.put("orderTotalPrice", orderTotalPrice);

        map.put("addressId", addressId);
        map.put("cityAddressId", cityAddressId);
        map.put("districtAddressId", districtAddressId);
        map.put("order_post", order_post);
        map.put("order_receiver", order_receiver);
        map.put("order_phone", order_phone);
        map.put("detailsAddress", detailsAddress);

        logger.info("转到前台天猫-订单建立页");
        return "fore/productBuyPage";
    }
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断点调试提交两个以上订单

在这里插入图片描述

根据前端携带参数的大小创建指定长度的集合，

根据914和915两个参数动态的将产品信息添加到集合中

List<ProductOrderItem> orderItemList = new ArrayList<>(order_item_list.length);
for (Integer orderItem_id : order_item_list) {
    orderItemList.add(productOrderItemService.get(orderItem_id));
}
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动态的检测该订单是否已经生成了

 //动态检测所有的订单
        for (ProductOrderItem orderItem : orderItemList) {
            if(orderItem.getProductOrderItem_user().getUser_id().equals(userId)==false){
//            if (orderItem.getProductOrderItem_user().getUser_id() != userId) {
                logger.warn("用户订单项与用户不匹配，回到购物车页");
                return "redirect:/cart";
            }
            if (orderItem.getProductOrderItem_order() != null) {
                logger.warn("用户订单项不属于购物车，回到购物车页");
                return "redirect:/cart";
            }
        }
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区别在将信息封装到集合之中

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填写完成提交订单

从前端jsp页面中的点击来提交订单。


    
        
            提交订单
        
        
            提交订单
        
    

//在前端添加判断的条件,根据是购物车还是，直接创建的订单走不同的提交方式
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payone 和paylist两个函数走的流程相同

区别在于走的后端请求路径不同

购物车

填写信息提交订单

http://localhost:8080/tmall/order/list

//创建新订单-多订单项-ajax
    @ResponseBody
    @RequestMapping(value = "order/list", method = RequestMethod.POST, produces = "application/json;charset=utf-8")
    public String createOrderByList(HttpSession session, Map<String, Object> map, HttpServletResponse response,
                                    @RequestParam String addressId,
                                    @RequestParam String cityAddressId,
                                    @RequestParam String districtAddressId,
                                    @RequestParam String productOrder_detail_address,
                                    @RequestParam String productOrder_post,
                                    @RequestParam String productOrder_receiver,
                                    @RequestParam String productOrder_mobile,
                                    @RequestParam String orderItemJSON) throws UnsupportedEncodingException {
        JSONObject object = new JSONObject();
        logger.info("检查用户是否登录");
        Object userId = checkUser(session);
        if (userId == null) {
            object.put("success", false);
            object.put("url", "/login");
            return object.toJSONString();
        }
        JSONObject orderItemMap = JSONObject.parseObject(orderItemJSON);
        Set<String> orderItem_id = orderItemMap.keySet();
        List<ProductOrderItem> productOrderItemList = new ArrayList<>(3);
        if (orderItem_id.size() > 0) {
            for (String id : orderItem_id) {
                ProductOrderItem orderItem = productOrderItemService.get(Integer.valueOf(id));
                if (orderItem == null || !orderItem.getProductOrderItem_user().getUser_id().equals(userId)) {
                    logger.warn("订单项为空或用户状态不一致！");
                    object.put("success", false);
                    object.put("url", "/cart");
                    return object.toJSONString();
                }
                if (orderItem.getProductOrderItem_order() != null) {
                    logger.warn("用户订单项不属于购物车，回到购物车页");
                    object.put("success", false);
                    object.put("url", "/cart");
                    return object.toJSONString();
                }
                boolean yn = productOrderItemService.update(new ProductOrderItem().setProductOrderItem_id(Integer.valueOf(id)).setProductOrderItem_userMessage(orderItemMap.getString(id)));
                if (!yn) {
                    throw new RuntimeException();
                }
                orderItem.setProductOrderItem_product(productService.get(orderItem.getProductOrderItem_product().getProduct_id()));
                productOrderItemList.add(orderItem);
            }
        } else {
            object.put("success", false);
            object.put("url", "/cart");
            return object.toJSONString();
        }
        logger.info("将收货地址等相关信息存入Cookie中,便于下次使用");
        Cookie[] cookies = new Cookie[]{
                new Cookie("addressId", addressId),
                new Cookie("cityAddressId", cityAddressId),
                new Cookie("districtAddressId", districtAddressId),
                new Cookie("order_post", URLEncoder.encode(productOrder_post, "UTF-8")),
                new Cookie("order_receiver", URLEncoder.encode(productOrder_receiver, "UTF-8")),
                new Cookie("order_phone", URLEncoder.encode(productOrder_mobile, "UTF-8")),
                new Cookie("detailsAddress", URLEncoder.encode(productOrder_detail_address, "UTF-8"))
        };
        int maxAge = 60 * 60 * 24 * 365;
        for(Cookie cookie : cookies){
            //设置过期时间为一年
            cookie.setMaxAge(maxAge);
            //存储Cookie
            response.addCookie(cookie);
        }
        StringBuffer productOrder_code = new StringBuffer()
                .append(new SimpleDateFormat("yyyyMMddHHmmss").format(new Date()))
                .append(0)
                .append(userId);
        logger.info("生成的订单号为：{}", productOrder_code);
        logger.info("整合订单对象");
        ProductOrder productOrder = new ProductOrder()
                .setProductOrder_status((byte) 0)
                .setProductOrder_address(new Address().setAddress_areaId(districtAddressId))
                .setProductOrder_post(productOrder_post)
                .setProductOrder_user(new User().setUser_id(Integer.valueOf(userId.toString())))
                .setProductOrder_mobile(productOrder_mobile)
                .setProductOrder_receiver(productOrder_receiver)
                .setProductOrder_detail_address(productOrder_detail_address)
                .setProductOrder_pay_date(new Date())
                .setProductOrder_code(productOrder_code.toString());
        Boolean yn = productOrderService.add(productOrder);
        if (!yn) {
            throw new RuntimeException();
        }
        Integer order_id = lastIDService.selectLastID();
        logger.info("整合订单项对象");
        for (ProductOrderItem orderItem : productOrderItemList) {
            orderItem.setProductOrderItem_order(new ProductOrder().setProductOrder_id(order_id));
            yn = productOrderItemService.update(orderItem);
        }
        if (!yn) {
            throw new RuntimeException();
        }

        object.put("success", true);
        object.put("url", "/order/pay/" + productOrder.getProductOrder_code());
        return object.toJSONString();
    }
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断点调试用户提交多订单的情景

$[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-6qqQmNRv-1660389499516)(C:\Users\Lenovo\AppData\Roaming\Typora\typora-user-images\image-20220813171210965.png)]$

重要的地方在于如何通过Stringbuffer类为每个选项都创建一个订单

StringBuffer productOrder_code = new StringBuffer()
        .append(new SimpleDateFormat("yyyyMMddHHmmss").format(new Date()))
        .append(0)
        .append(userId);
logger.info("生成的订单号为：{}", productOrder_code);
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通过已有的订单项来创建订单

ProductOrder productOrder = new ProductOrder()
        .setProductOrder_status((byte) 0)
        .setProductOrder_address(new Address().setAddress_areaId(districtAddressId))
        .setProductOrder_post(productOrder_post)
        .setProductOrder_user(new User().setUser_id(Integer.valueOf(userId.toString())))
        .setProductOrder_mobile(productOrder_mobile)
        .setProductOrder_receiver(productOrder_receiver)
        .setProductOrder_detail_address(productOrder_detail_address)
        .setProductOrder_pay_date(new Date())
        .setProductOrder_code(productOrder_code.toString());
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订单的状态为0代表完成下单待支付

$[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-r7efdnPk-1660389499516)(C:\Users\Lenovo\AppData\Roaming\Typora\typora-user-images\image-20220813172745060.png)]$

四个购物车列表生成了一个订单选项。

logger.info("整合订单项对象");
1

整个订单对象

$[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-i86vOOZ4-1660389499517)(C:\Users\Lenovo\AppData\Roaming\Typora\typora-user-images\image-20220813172952253.png)]$

$[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-KExeMp1a-1660389499518)(C:\Users\Lenovo\AppData\Roaming\Typora\typora-user-images\image-20220813173016677.png)]$

将四个下单项同时与一个新生成的订单向关联起来

for (ProductOrderItem orderItem : productOrderItemList) {
    orderItem.setProductOrderItem_order(new ProductOrder().setProductOrder_id(order_id));
    yn = productOrderItemService.update(orderItem);
}
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给关联列关联一个订单的值

$[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-SlPhjn4T-1660389499518)(C:\Users\Lenovo\AppData\Roaming\Typora\typora-user-images\image-20220813173250895.png)]$

$[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-pjYSbI3x-1660389499519)(C:\Users\Lenovo\AppData\Roaming\Typora\typora-user-images\image-20220813173639436.png)]$

关联的是新生成的570号订单

之后关联成功以后

object.put("url", "/order/pay/" + productOrder.getProductOrder_code());
1

跳转订单支付页完成订单支付

//转到前台天猫-订单支付页
@RequestMapping(value = "order/pay/{order_code}", method = RequestMethod.GET)
public String goToOrderPayPage(Map<String, Object> map, HttpSession session,
                               @PathVariable("order_code") String order_code) {
    logger.info("检查用户是否登录");
    Object userId = checkUser(session);
    User user;
    if (userId != null) {
        logger.info("获取用户信息");
        user = userService.get(Integer.parseInt(userId.toString()));
        map.put("user", user);
    } else {
        return "redirect:/login";
    }
    logger.info("------验证订单信息------");
    logger.info("查询订单是否存在");
    ProductOrder order = productOrderService.getByCode(order_code);
    if (order == null) {
        logger.warn("订单不存在，返回订单列表页");
        return "redirect:/order/0/10";
    }
    logger.info("验证订单状态");
    if (order.getProductOrder_status() != 0) {
        logger.warn("订单状态不正确，返回订单列表页");
        return "redirect:/order/0/10";
    }
    logger.info("验证用户与订单是否一致");
    if (order.getProductOrder_user().getUser_id() != Integer.parseInt(userId.toString())) {
        logger.warn("用户与订单信息不一致，返回订单列表页");
        return "redirect:/order/0/10";
    }
    order.setProductOrderItemList(productOrderItemService.getListByOrderId(order.getProductOrder_id(), null));

    double orderTotalPrice = 0.00;
    if (order.getProductOrderItemList().size() == 1) {
        logger.info("获取单订单项的产品信息");
        ProductOrderItem productOrderItem = order.getProductOrderItemList().get(0);
        Product product = productService.get(productOrderItem.getProductOrderItem_product().getProduct_id());
        product.setProduct_category(categoryService.get(product.getProduct_category().getCategory_id()));
        productOrderItem.setProductOrderItem_product(product);
        orderTotalPrice = productOrderItem.getProductOrderItem_price();
    } else {
        for (ProductOrderItem productOrderItem : order.getProductOrderItemList()) {
            orderTotalPrice += productOrderItem.getProductOrderItem_price();
        }
    }
    logger.info("订单总金额为：{}元", orderTotalPrice);

    map.put("productOrder", order);
    map.put("orderTotalPrice", orderTotalPrice);

    logger.info("转到前台天猫-订单支付页");
    return "fore/productPayPage";
}
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原文地址：https://blog.csdn.net/weixin_46167190/article/details/126323307