小程序开发中实现一个向用户发红包的功能

/**
 * 创建现金红包
 * @param {AlipayCashHBEntity} en 实体对象
 * @see https://docs.open.alipay.com/api_5/alipay.marketing.campaign.cash.create
 */
async createCashHB(en) {
  let alipaySdk = this._getAlipaySdk();
  try {
    const rs = await alipaySdk.exec('alipay.marketing.campaign.cash.create', {
      bizContent: {
        couponName: en.couponName,
        prizeType: en.prizeType,
        totalMoney: en.totalMoney,
        totalNum: en.totalNum,
        prizeMsg: en.couponName,
        startTime: en.startTime,
        endTime: en.endTime,
        merchantLink: en.merchantLink,
        sendFreqency: `L${en.sendFreqency}`
      }
    });
    if (rs.code != '10000') {
      throw new Error(rs.subMsg);
    } else {
      return rs;
    }
  } catch (err) {
    throw err;
  }
}

/**
 * 发送现金红包
 * @param {String} crowdNo 红包编号
 * @param {String} alipayUserOpenId 支付宝用户openId
 * @param {String} productExchangeId 兑换记录Id
 * @see https://docs.open.alipay.com/api_5/alipay.marketing.campaign.cash.trigger
 */
async sendCashHB(crowdNo, alipayUserOpenId, productExchangeId) {
  let alipaySdk = this._getAlipaySdk();
  try {
    const rs = await alipaySdk.exec('alipay.marketing.campaign.cash.trigger', {
      bizContent: {
        user_id: alipayUserOpenId,
        crowd_no: crowdNo,
        out_biz_no: productExchangeId
      }
    });
    if (rs.code != '10000') {
      throw new Error(rs.subMsg);
    } else {
      return rs;
    }
  } catch (err) {
    throw err;
  }
}