支付功能

 

 

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HttpClient.java 工具类

package cn.itcast.core.util;

import java.io.IOException;
import java.security.GeneralSecurityException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.text.ParseException;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpEntityEnclosingRequestBase;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLContextBuilder;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.conn.ssl.X509HostnameVerifier;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;

/**
 * http请求客户端
 * 
 * @author Administrator
 * 
 */
public class HttpClient {
    private String url;
    private Map<String, String> param;
    private int statusCode;
    private String content;
    private String xmlParam;
    private boolean isHttps;

    public boolean isHttps() {
        return isHttps;
    }

    public void setHttps(boolean isHttps) {
        this.isHttps = isHttps;
    }

    public String getXmlParam() {
        return xmlParam;
    }

    public void setXmlParam(String xmlParam) {
        this.xmlParam = xmlParam;
    }

    public HttpClient(String url, Map<String, String> param) {
        this.url = url;
        this.param = param;
    }

    public HttpClient(String url) {
        this.url = url;
    }

    public void setParameter(Map<String, String> map) {
        param = map;
    }

    public void addParameter(String key, String value) {
        if (param == null)
            param = new HashMap<String, String>();
        param.put(key, value);
    }

    public void post() throws ClientProtocolException, IOException {
        HttpPost http = new HttpPost(url);
        setEntity(http);
        execute(http);
    }

    public void put() throws ClientProtocolException, IOException {
        HttpPut http = new HttpPut(url);
        setEntity(http);
        execute(http);
    }

    public void get() throws ClientProtocolException, IOException {
        if (param != null) {
            StringBuilder url = new StringBuilder(this.url);
            boolean isFirst = true;
            for (String key : param.keySet()) {
                if (isFirst)
                    url.append("?");
                else
                    url.append("&");
                url.append(key).append("=").append(param.get(key));
            }
            this.url = url.toString();
        }
        HttpGet http = new HttpGet(url);
        execute(http);
    }

    /**
     * set http post,put param
     */
    private void setEntity(HttpEntityEnclosingRequestBase http) {
        if (param != null) {
            List<NameValuePair> nvps = new LinkedList<NameValuePair>();
            for (String key : param.keySet())
                nvps.add(new BasicNameValuePair(key, param.get(key))); // 参数
            http.setEntity(new UrlEncodedFormEntity(nvps, Consts.UTF_8)); // 设置参数
        }
        if (xmlParam != null) {
            http.setEntity(new StringEntity(xmlParam, Consts.UTF_8));
        }
    }

    private void execute(HttpUriRequest http) throws ClientProtocolException,
            IOException {
        CloseableHttpClient httpClient = null;
        try {
            if (isHttps) {
                SSLContext sslContext = new SSLContextBuilder()
                        .loadTrustMaterial(null, new TrustStrategy() {
                            // 信任所有
                            public boolean isTrusted(X509Certificate[] chain,
                                    String authType)
                                    throws CertificateException {
                                return true;
                            }
                        }).build();
                SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
                        sslContext);
                httpClient = HttpClients.custom().setSSLSocketFactory(sslsf)
                        .build();
            } else {
                httpClient = HttpClients.createDefault();
            }
            CloseableHttpResponse response = httpClient.execute(http);
            try {
                if (response != null) {
                    if (response.getStatusLine() != null)
                        statusCode = response.getStatusLine().getStatusCode();
                    HttpEntity entity = response.getEntity();
                    // 响应内容
                    content = EntityUtils.toString(entity, Consts.UTF_8);
                }
            } finally {
                response.close();
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            httpClient.close();
        }
    }

    public int getStatusCode() {
        return statusCode;
    }

    public String getContent() throws ParseException, IOException {
        return content;
    }

}

BuyerCartServiceImpl

package cn.itcast.core.service;

import cn.itcast.core.dao.item.ItemDao;
import cn.itcast.core.pojo.entity.BuyerCart;
import cn.itcast.core.pojo.item.Item;
import cn.itcast.core.pojo.order.OrderItem;
import cn.itcast.core.util.Constants;
import com.alibaba.dubbo.config.annotation.Service;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;

import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.List;

@Service
public class BuyerCartServiceImpl implements BuyerCartService {

    @Autowired
    private RedisTemplate redisTemplate;

    @Autowired
    private ItemDao itemDao;

    @Override
    public List<BuyerCart> addItemToCartList(List<BuyerCart> cartList, Long itemId, Integer num) {
        //1. 根据商品SKU ID查询SKU商品信息
        Item item = itemDao.selectByPrimaryKey(itemId);
        //2. 判断商品是否存在不存在, 抛异常
        if (item == null) {
            throw new RuntimeException("您购买的商品不存在!");
        }
        //3. 判断商品状态是否为1已审核, 状态不对抛异常
        if (!"1".equals(item.getStatus())) {
            throw new RuntimeException("您购买的商品非法!");
        }
        //4.获取商家ID
        String sellerId = item.getSellerId();
        //5.根据商家ID查询购物车列表中是否存在该商家的购物车
        BuyerCart buyerCart = findCartBySellerId(sellerId, cartList);
        //6.判断如果购物车列表中不存在该商家的购物车
        if (buyerCart == null) {
            //6.a.1 新建购物车对象
            buyerCart = new BuyerCart();
            //向购物车中加入卖家id
            buyerCart.setSellerId(sellerId);
            //向购物车中加入卖家名称
            buyerCart.setSellerName(item.getSeller());
            //创建购物车中需要的购物项集合
            List<OrderItem> orderItemList = new ArrayList<>();
            //创建购物项对象
            OrderItem orderItem = createOrderItem(item, num);
            //购物项加入购物项集合中
            orderItemList.add(orderItem);
            //向购物车中加入购物项集合
            buyerCart.setOrderItemList(orderItemList);
            //6.a.2 将新建的购物车对象添加到购物车列表
            cartList.add(buyerCart);
        } else {
            //6.b.1如果购物车列表中存在该商家的购物车 (查询购物车明细列表中是否存在该商品)
            List<OrderItem> orderItemList = buyerCart.getOrderItemList();
            OrderItem orderItem = findOrderItemByItemId(orderItemList, itemId);
            //6.b.2判断购物车明细是否为空
            if (orderItem  == null) {
                //6.b.3为空，新增购物车明细
                orderItem = createOrderItem(item, num);
                //将新建的购物项对象放入购物项集合中
                orderItemList.add(orderItem);
            } else {
                //6.b.4不为空，在原购物车明细上添加数量，更改金额
                orderItem.setNum(orderItem.getNum() + num);
                orderItem.setTotalFee(orderItem.getPrice().multiply(new BigDecimal(orderItem.getNum())));
            }
            //6.b.5如果购物车明细中数量操作后小于等于0，则移除
            if (orderItem.getNum() <= 0) {
                orderItemList.remove(orderItem);
            }
            //6.b.6如果购物车中购物车明细列表为空,则移除
            if (orderItemList.size() == 0) {
                cartList.remove(buyerCart);
            }
        }
        //7. 返回购物车列表对象
        return cartList;
    }

    /**
     * 从购物项集合中找符合itemId的同款购物项
     * @param orderItemList 购物项集合
     * @param itemId        库存id
     * @return
     */
    private OrderItem findOrderItemByItemId(List<OrderItem> orderItemList, Long itemId) {
        if (orderItemList != null) {
            for (OrderItem orderItem : orderItemList) {
                if (itemId.equals(orderItem.getItemId())) {
                    return orderItem;
                }
            }
        }
        return null;
    }

    /**
     * 创建购物项对象
     * @param item  库存对象
     * @param num   购买商品数量
     * @return
     */
    private OrderItem createOrderItem(Item item, Integer num) {
        if (num == null || num <= 0) {
            throw new RuntimeException("您购买数量非法!");
        }
        OrderItem orderItem = new OrderItem();
        //库存标题
        orderItem.setTitle(item.getTitle());
        //购买数量
        orderItem.setNum(num);
        //卖家id
        orderItem.setSellerId(item.getSellerId());
        //商品单价
        orderItem.setPrice(item.getPrice());
        //示例图片地址
        orderItem.setPicPath(item.getImage());
        //库存id
        orderItem.setItemId(item.getId());
        //商品id
        orderItem.setGoodsId(item.getGoodsId());
        //总价 = 单价 * 购买数量
        orderItem.setTotalFee(orderItem.getPrice().multiply(new BigDecimal(num)));
        return orderItem;
    }

    /**
     * 从购物车列表中获取这个卖家的购物车
     * @param sellerId  卖家id
     * @param cartList  购物车列表
     * @return
     */
    private BuyerCart findCartBySellerId(String sellerId, List<BuyerCart> cartList) {
        if (cartList != null) {
            for (BuyerCart cart : cartList) {
                if (sellerId.equals(cart.getSellerId())) {
                    return cart;
                }
            }
        }
        return null;
    }

    @Override
    public void setCartListToRedis(String userName, List<BuyerCart> cartList) {
        redisTemplate.boundHashOps(Constants.REDIS_CARTLIST).put(userName, cartList);
    }

    @Override
    public List<BuyerCart> getCartListFromRedis(String userName) {
        List<BuyerCart> cartList = (List<BuyerCart>)redisTemplate.boundHashOps(Constants.REDIS_CARTLIST).get(userName);
        if (cartList == null) {
            cartList = new ArrayList<BuyerCart>();
        }
        return cartList;
    }

    @Override
    public List<BuyerCart> mergeCookieCartListToRedisCartList(List<BuyerCart> cookieCartList, List<BuyerCart> redisCartList) {
        if (cookieCartList != null) {
            //遍历cookie购物车集合
            for (BuyerCart cart : cookieCartList) {
                List<OrderItem> orderItemList = cart.getOrderItemList();
                if (orderItemList != null) {
                    //遍历cookie中的购物项集合
                    for (OrderItem orderItem : orderItemList) {
                        //向redis购物车集合中加入cookie中的购物项
                        redisCartList = addItemToCartList(redisCartList, orderItem.getItemId(), orderItem.getNum());
                    }
                }
            }
        }
        return redisCartList;
    }
}

OrderServiceImpl

package cn.itcast.core.service;

import cn.itcast.core.dao.log.PayLogDao;
import cn.itcast.core.dao.order.OrderDao;
import cn.itcast.core.dao.order.OrderItemDao;
import cn.itcast.core.pojo.entity.BuyerCart;
import cn.itcast.core.pojo.log.PayLog;
import cn.itcast.core.pojo.order.Order;
import cn.itcast.core.pojo.order.OrderItem;
import cn.itcast.core.util.Constants;
import cn.itcast.core.util.IdWorker;
import com.alibaba.dubbo.config.annotation.Service;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

@Service
@Transactional
public class OrderServiceImpl implements OrderService {

    @Autowired
    private IdWorker idWorker;

    @Autowired
    private PayLogDao payLogDao;

    @Autowired
    private OrderDao orderDao;

    @Autowired
    private OrderItemDao orderItemDao;

    @Autowired
    private RedisTemplate redisTemplate;

    @Override
    public void add(Order order, List<BuyerCart> cartList) {
        /**
         * 1. 遍历购物车集合
         * 每一个购物车对象, 都保存一条order订单表数据
         */
        List<String> orderIdList=new ArrayList();//订单ID列表
        double total_money=0;//总金额 （元）
        for(BuyerCart cart:cartList){
            //生成一个id
            long orderId = idWorker.nextId();
            System.out.println("sellerId:"+cart.getSellerId());
            Order tborder=new Order();//新创建订单对象
            tborder.setOrderId(orderId);//订单ID
            tborder.setUserId(order.getUserId());//用户名
            tborder.setPaymentType(order.getPaymentType());//支付类型
            tborder.setStatus("1");//状态：未付款
            tborder.setCreateTime(new Date());//订单创建日期
            tborder.setUpdateTime(new Date());//订单更新日期
            tborder.setReceiverAreaName(order.getReceiverAreaName());//地址
            tborder.setReceiverMobile(order.getReceiverMobile());//手机号
            tborder.setReceiver(order.getReceiver());//收货人
            tborder.setSourceType(order.getSourceType());//订单来源
            tborder.setSellerId(cart.getSellerId());//商家ID


            /**
             * 2. 遍历购物项集合
             * 每一个购物项对象, 都保存一条order_item订单详情表数据
             */
            double money=0;
            for(OrderItem orderItem :cart.getOrderItemList()){
                orderItem.setId(idWorker.nextId());
                orderItem.setOrderId( orderId  );//订单ID
                orderItem.setSellerId(cart.getSellerId());
                money+=orderItem.getTotalFee().doubleValue();//金额累加
                orderItemDao.insertSelective(orderItem);
            }

            tborder.setPayment(new BigDecimal(money));
            orderDao.insertSelective(tborder);
            orderIdList.add(orderId+"");//添加到订单列表
            total_money+=money;//累加到总金额
        }



        /**
         * 3. 根据遍历过程中计算的总价钱, 保存一条支付日志数据
         */
        if("1".equals(order.getPaymentType())){//如果是微信支付
            PayLog payLog=new PayLog();
            String outTradeNo=  idWorker.nextId()+"";//支付订单号
            payLog.setOutTradeNo(outTradeNo);//支付订单号
            payLog.setCreateTime(new Date());//创建时间
            //订单号列表，逗号分隔
            String ids=orderIdList.toString().replace("[", "").replace("]", "").replace(" ", "");
            payLog.setOrderList(ids);//订单号列表，逗号分隔
            payLog.setPayType("1");//支付类型
            payLog.setTotalFee( (long)(total_money*100 ) );//总金额(分)
            payLog.setTradeState("0");//支付状态
            payLog.setUserId(order.getUserId());//用户ID
            payLogDao.insert(payLog);//插入到支付日志表
            //将支付日志(未支付状态), 保存到redis中, 供支付使用
            redisTemplate.boundHashOps(Constants.REDIS_PAYLOG).put(order.getUserId(), payLog);//放入缓存
        }
        /**
         * 4. 保存支付日志, 订单集合, 订单详情集合完成后, 清空redis中的购物车
         */
        redisTemplate.boundHashOps(Constants.REDIS_CARTLIST).delete(order.getUserId());

    }

    @Override
    public PayLog findPayLogFromRedis(String userName) {
        PayLog payLog = (PayLog)redisTemplate.boundHashOps(Constants.REDIS_PAYLOG).get(userName);
        if (payLog == null) {
            payLog = new PayLog();
        }
        return payLog;
    }

    @Override
    public void updateOrderStatus(String out_trade_no, String transaction_id) {
        /**
         * 1.修改支付日志支付状态
         */
        PayLog payLog = payLogDao.selectByPrimaryKey(out_trade_no);
        //支付时间
        payLog.setPayTime(new Date());
        //支付状态改为1, 已支付
        payLog.setTradeState("1");
        //交易号, 微信给我们返回的
        payLog.setTransactionId(transaction_id);
        //更新支付日志到数据库中
        payLogDao.updateByPrimaryKeySelective(payLog);

        /**
         * 2.修改订单支付状态
         */
        String orderList = payLog.getOrderList();//获取订单号列表
        String[] orderIds = orderList.split(",");//获取订单号数组
        if (orderIds != null) {
            for (String orderId : orderIds) {
                Order order = new Order();
                order.setStatus("2");//已付款
                order.setOrderId(Long.parseLong(orderId));
                orderDao.updateByPrimaryKeySelective(order);
            }
        }

        /**
         * 3. 清除redis缓存中的未支付日志数据
         */
        redisTemplate.boundHashOps(Constants.REDIS_PAYLOG).delete(payLog.getUserId());

    }
}

PayServiceImpl

package cn.itcast.core.service;

import cn.itcast.core.util.HttpClient;
import com.alibaba.dubbo.config.annotation.Service;
import com.github.wxpay.sdk.WXPayUtil;
import org.springframework.beans.factory.annotation.Value;

import java.util.HashMap;
import java.util.Map;

@Service
public class PayServiceImpl implements PayService {

    //微信公众账号或开放平台APP的唯一标识
    @Value("${appid}")
    private String appid;

    //财付通平台的商户账号
    @Value("${partner}")
    private String partner;

    //财付通平台的商户密钥
    @Value("${partnerkey}")
    private String partnerkey;

    /**
     * 调用微信下单接口生成支付链接
     *
     * @param tradeNo  支付单号
     * @param totalFee 订单金额
     * @return
     */
    @Override
    public Map createNative(String tradeNo, String totalFee) {
        //1.创建参数
        Map<String, String> param = new HashMap();//创建参数
        param.put("appid", appid);//公众号
        param.put("mch_id", partner);//商户号
        param.put("nonce_str", WXPayUtil.generateNonceStr());//随机字符串
        param.put("body", "品优购");//商品描述
        param.put("out_trade_no", tradeNo);//商户订单号
        param.put("total_fee", totalFee);//总金额（分）
        param.put("spbill_create_ip", "127.0.0.1");//IP
        param.put("notify_url", "http://www.itcast.cn");//回调地址(随便写)
        param.put("trade_type", "NATIVE");//交易类型
        try {
            //2.生成要发送的xml格式数据
            String xmlParam = WXPayUtil.generateSignedXml(param, partnerkey);
            System.out.println(xmlParam);
            //调用微信统一下单接口, 通过httpClient工具发送请求
            HttpClient client = new HttpClient("https://api.mch.weixin.qq.com/pay/unifiedorder");
            //使用https协议发送
            client.setHttps(true);
            //发送的xml格式字符串数据
            client.setXmlParam(xmlParam);
            //使用post请求发送
            client.post();
            //3.发送请求并获得结果
            String result = client.getContent();
            System.out.println(result);
            //调用微信工具类, 将返回的xml格式字符串转换成map格式
            Map<String, String> resultMap = WXPayUtil.xmlToMap(result);
            Map<String, String> map = new HashMap<>();
            map.put("code_url", resultMap.get("code_url"));//支付链接
            map.put("total_fee", totalFee);//总金额
            map.put("out_trade_no", tradeNo);//订单号
            return map;
        } catch (Exception e) {
            e.printStackTrace();
            return new HashMap<>();
        }
    }

    @Override
    public Map queryPayStatus(String tradeNo) {
        //封装发送的数据参数
        Map param = new HashMap();
        param.put("appid", appid);//公众账号ID
        param.put("mch_id", partner);//商户号
        param.put("out_trade_no", tradeNo);//订单号
        param.put("nonce_str", WXPayUtil.generateNonceStr());//随机字符串
        //发送的地址
        String url = "https://api.mch.weixin.qq.com/pay/orderquery";
        try {
            //调用微信工具类, 将封装的发送参数, 转换成xml格式字符串
            String xmlParam = WXPayUtil.generateSignedXml(param, partnerkey);
            //使用httpClient工具发送https请求, 到微信服务器
            HttpClient client = new HttpClient(url);
            //设置使用https协议
            client.setHttps(true);
            //设置发送的内容
            client.setXmlParam(xmlParam);
            //设置post请求发送
            client.post();
            //发送并返回结果, 结果为xml格式字符串
            String result = client.getContent();
            //调用微信工具类, 将返回的xml格式字符串转换成Map
            Map<String, String> map = WXPayUtil.xmlToMap(result);
            System.out.println(map);
            return map;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
}

PayController

package cn.itcast.core.controller;

import cn.itcast.core.pojo.entity.Result;
import cn.itcast.core.pojo.log.PayLog;
import cn.itcast.core.service.OrderService;
import cn.itcast.core.service.PayService;
import com.alibaba.dubbo.config.annotation.Reference;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.Map;

/**
 * 支付流程
 */
@RestController
@RequestMapping("/pay")
public class PayController {

    @Reference
    private OrderService orderService;

    @Reference
    private PayService payService;

    /**
     * 生成支付链接
     */
    @RequestMapping("/createNative")
    public Map createNative() {
        //1.获取当前登录用户的用户名
        String userName = SecurityContextHolder.getContext().getAuthentication().getName();
        //2.根据当前登录的用户的用户名到redis中获取未支付的日志记录
        PayLog payLog = orderService.findPayLogFromRedis(userName);
        //3.根据日志对象中的支付单号和总金额调用,微信同意下单接口,生成支付链接返回
        //"1"String.valueof(paylog.getTotalFee())
        Map resultMap = payService.createNative(payLog.getOutTradeNo(), "1");
        return resultMap;
    }

    @RequestMapping("/queryPayStatus")
    public Result queryPayStatus(String out_trade_no) {
        Result result = null;
        int flag = 1;
        //1.死循环
        while (true) {
            //2.根据支付单号.调用微信的查询订单就扣查询支付状态
            Map resultMap = payService.queryPayStatus(out_trade_no);
            //3.如果返回空的对象表示支付超时
            if (resultMap == null) {
                result = new Result(false, "二维码超时");
                break;

            }
            //4.如果返回数据中trade_state属性为SUCCESS代表支付成功
            if ("SUCCESS".equals(resultMap.get("trade_state"))) {
                orderService.updateOrderStatus(out_trade_no, String.valueOf(resultMap.get("transaction_id")));
                result = new Result(true, "支付成功");
                break;
            }
            //超过20分钟未支付,这支付超时
            if (flag >= 400) {
                result = new Result(false, "二维码超时");
                break;
            }
        }


        try {
            Thread.sleep(3000);
            flag++;
        } catch (InterruptedException e) {
            e.printStackTrace();
            result = new Result(false, "二维码超时");
        }
        return result;
    }

}

OrderController

package cn.itcast.core.controller;

import cn.itcast.core.pojo.entity.BuyerCart;
import cn.itcast.core.pojo.entity.Result;
import cn.itcast.core.pojo.order.Order;
import cn.itcast.core.service.BuyerCartService;
import cn.itcast.core.service.OrderService;
import com.alibaba.dubbo.config.annotation.Reference;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController
@RequestMapping("/order")
public class OrderController {

    @Reference
    private OrderService orderService;

    @Reference
    private BuyerCartService buyerCartService;


    /**
     * 提交订单
     * @param order  页面传入这个对象里面只有收货人地址, 联系人姓名, 手机号
     * @return
     */
    @RequestMapping("/add")
    public Result add(@RequestBody Order order) {
        try {
            //1. 获取当前登录用户的用户名
            String userName = SecurityContextHolder.getContext().getAuthentication().getName();
            //2. 将当前用户的用户名放入页面传进来的order对象中
            order.setUserId(userName);
            //3. 通过登录用户的用户名获取这个人的购物车列表
            List<BuyerCart> cartList = buyerCartService.getCartListFromRedis(userName);
            //3. 保存订单
            orderService.add(order, cartList);
            return  new Result(true, "保存订单成功!");
        } catch (Exception e) {
            e.printStackTrace();
            return  new Result(false, "保存订单失败!");
        }
    }
}

 

来源：https://www.cnblogs.com/lei0913/p/10890537.html