上传电子小票

商户将支付成功回传的参数填入指定字段，可以给指定微信支付订单上传电子小票。 上传成功后，用户可以在账单详情页看到商户上传的电子小票。

const { Rsa } = require('wechatpay-axios-plugin')
const { createReadStream } = require('fs')
const { basename } = require('path')

const localFilePath = '/path/to/merchant-receipt-file.jpg'
const stream = createReadStream(localFilePath)
const meta = {
  transaction_id,
  transaction_mchid,
  transaction_sub_mchid,
  out_trade_no,
  openid,
  upload_time,
  merchant_contact_information: {
    consultation_phone_number: Rsa.encrypt(phone_number, platformPublicKeyInstance),
  },
  sha256: 'from upstream or local calculated',
}
const media = {
  meta: JSON.stringify(meta),
  file: stream,
}

wxpay.v3.marketing.shoppingReceipt.shoppingreceipts.post(media, {
  meta,
  headers: {
    'Content-Type': 'multipart/form-data',
    'Wechatpay-Serial': platformPublicKeyId,
  },
})
.then(
  ({ 
    data: {
      receipt,
    },
  }) => ({
    receipt,
  })
)

参阅 官方文档 官方文档