/**
     * 獲取支付的請求參數
     */
    @ApiOperation(value = "獲取支付的請求參數")
    @PostMapping("prepay")
    public Object payPrepay(@LoginUser UserVo loginUser, Integer orderId) {
        //查詢訂單及物流資訊
        OrderVo orderInfo = orderService.queryObject(orderId);

        if (null == orderInfo) {
            return toResponsObject(400, "訂單已取消", "");
        }

        if (orderInfo.getPay_status() == 2) {
            return toResponsObject(400, "訂單已支付，請不要重複操作", "");
        }
        //獲取隨機字元串
        String nonceStr = CharUtil.getRandomString(32);

        ////pay.weixin.qq.com/wiki/doc/api/wxa/wxa_api.php?chapter=7_7&index=3
        Map<Object, Object> resultObj = new TreeMap();

        try {
            HttpConnectionUtil http = new HttpConnectionUtil(ResourceUtil.getConfigByName("wx.uniformorder"));
            http.init();
            Map<Object, Object> parame = new TreeMap<>();
            // 商戶號
            parame.put("cusid",ResourceUtil.getConfigByName("wx.mchId"));
            // 通聯支付的appid
            parame.put("appid",ResourceUtil.getConfigByName("wx.sybAppid"));
            // 版本號
            parame.put("version", "11");
            // trxamt：交易金額
            //支付金額，單位為分
            parame.put("trxamt", String.valueOf(orderInfo.getActual_price().multiply(new BigDecimal(100)).intValue()));
            // 商戶訂單編號
            parame.put("reqsn", orderInfo.getOrder_sn());
            // 交易類型APP
            parame.put("paytype", ResourceUtil.getConfigByName("wx.tradeType"));
            String randomStr = SybUtil.getValidatecode(8);
            // 隨機字元串
            parame.put("randomstr", randomStr);
            // body 訂單標題
            Map orderGoodsParam = new HashMap();
            orderGoodsParam.put("order_id", orderId);
            //訂單的商品nideshop_order_goods表
            List<OrderGoodsVo> orderGoods = orderGoodsService.queryList(orderGoodsParam);
            if (null != orderGoods) {
                String body = "校服-";
                for (OrderGoodsVo goodsVo : orderGoods) {
                    body = body + goodsVo.getGoods_name() + "、";
                }
                if (body.length() > 0) {
                    body = body.substring(0, body.length() - 1);
                }
                // 商品描述
                parame.put("body", body);
            }else{
                parame.put("body", "校服");
            }
            parame.put("remark", "");
            // validtime   有效時間，不填寫，默認為5分鐘。
            parame.put("validtime", "30");

            // acct 支付平台用戶標識
            parame.put("acct", loginUser.getWeixin_openid());
            // 回調地址
            parame.put("notify_url", ResourceUtil.getConfigByName("wx.notifyUrl"));
            //  支付限制 不能用信用卡支付  limit_pay
            parame.put("limit_pay", "");
            // sub_appid 微信子appid
            parame.put("sub_appid", ResourceUtil.getConfigByName("wx.appId"));
            // goods_tag  訂單優惠標識
            parame.put("goods_tag", "");
            // benefitdetail 優惠資訊
            parame.put("benefitdetail", "");
            //chnlstoreid 渠道門店編號
            parame.put("chnlstoreid", "");
            // subbranch       通聯繫統門店號
            parame.put("subbranch", "");
            parame.put("extendparams", "");
            //終端ip
            parame.put("cusip", getClientIp());
            parame.put("fqnum", "");
            parame.put("idno", "");
            parame.put("truename", "");
            parame.put("asinfo", "");
            // signtype  簽名方式 不填默認MD5
            parame.put("signtype", "MD5");
            parame.put("sign", SybUtil.unionSign(parame,ResourceUtil.getConfigByName("wx.paySignKey"),"MD5"));
            // 數字簽證
            byte[] bys = http.postParams(parame, true);
            String result = new String(bys,"UTF-8");
            Map map = SybUtil.json2Obj(result, Map.class);
            Map<String,Object> mapType = null;
            if(map!=null){
                for(Object key:map.keySet()){
                    if (key.equals("payinfo")){
                        mapType = JSON.parseObject((String) map.get(key),Map.class);
                    }
                }
            }
           // print(map);
            if(map == null){
                throw new Exception("返回數據錯誤");
            }
            String return_code = MapUtils.getString("retcode", map);
            String return_msg = MapUtils.getString("retmsg", map);
                if (return_code.equalsIgnoreCase("FAIL")) {
                    return toResponsFail("支付失敗," + return_msg);
                } else if (return_code.equalsIgnoreCase("SUCCESS")) {
                    // 返回數據
                        String prepay_id = MapUtils.getString("prepay_id", mapType);
                        // 先生成paySign 參考https://pay.weixin.qq.com/wiki/doc/api/wxa/wxa_api.php?chapter=7_7&index=5
                        resultObj.put("appId",MapUtils.getString("appId", mapType));
                        resultObj.put("timeStamp", MapUtils.getString("timeStamp", mapType));
                        resultObj.put("nonceStr",  MapUtils.getString("nonceStr", mapType));
                        resultObj.put("package",MapUtils.getString("package", mapType));
                        resultObj.put("signType", MapUtils.getString("signType", mapType));
                        String paySign =MapUtils.getString("paySign", mapType);
                        resultObj.put("paySign", paySign);
                        // 業務處理
                        orderInfo.setPay_id(prepay_id);
                        // 付款中
                        orderInfo.setPay_status(1);
                        //更新訂單表
                        orderService.update(orderInfo);
                        return toResponsObject(0, "微信統一訂單下單成功", resultObj);
                }
        } catch (Exception e) {
            e.printStackTrace();
            return toResponsFail("下單失敗,error=" + e.getMessage());
        }
        return toResponsFail("下單失敗");
    }

 HttpConnectionUtil http = new HttpConnectionUtil(ResourceUtil.getConfigByName("wx.uniformorder"));