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校园轻松付扣费支付成功通知(JSON)

扣费成功后,微信会把相关支付结果信息异步通知给商户。 扣费结果通知

请求头(headers)

Wechatpay-Nonce: 3d980fb850fdce97f6bfb3d248597f16
Wechatpay-Serial: 7132d72a03e93cddf8c03bbd1f37eedf********
Wechatpay-Signature: i48r5y8IQw1qpTO+ywoV...
Wechatpay-Signature-Type: WECHATPAY2-SHA256-RSA2048
Wechatpay-Timestamp: 1710048759
Request-ID: 08F78BB5AF0610D302189F99DD5C20BA56F89845-0

请求报文(body)

json
{
  "id":"EV-2018022511223320873",
  "create_time":"2015-05-20T13:29:35+08:00",
  "resource_type":"encrypt-resource",
  "event_type":"TRANSACTION.INDUSTRY_SUCCESS",
  "resource" : {
    "algorithm":"AEAD_AES_256_GCM",
    "ciphertext": "...",
    "nonce": "...",
    "associated_data": ""
  }
}
resource.ciphertext 解密后的明文格式
json
{
  "mchid": "1230000109",
  "appid": "wx8888888888888888",
  "sub_mchid": "1900000109",
  "sub_appid": "wx8888888888888888",
  "out_trade_no": "201407033233368018",
  "transaction_id": "25012014070332333018",
  "trade_type": "AUTH",
  "trade_state": "SUCCESS",
  "trade_state_desc": "支付成功",
  "bank_type": "ICBC_DEBIT",
  "attach": "自定义数据",
  "success_time": "2020-03-26T10:43:39+08:00",
  "payer": {
    "openid": "oUpF8uMuAJOM2pxb1Q",
    "sub_openid": "oUpF8uMuAJOM2pxb1Q"
  },
  "amount": {
    "total": 888,
    "payer_total": 888,
    "discount_total": 100,
    "currency": "CNY"
  },
  "device_info": {
    "device_id": "12343232",
    "device_ip": "123.12.12.123"
  },
  "promotion_detail": [
    {
      "coupon_id": "109519",
      "name":"单品惠-6",
      "scope":"GLOBALSINGLE",
      "type":"DISCOUNTCOUPON",
      "amount": 5,
      "stock_id": "931386",
      "wechatpay_contribute":100,
      "merchant_contribute":100,
      "other_contribute":100
	  }
  ]
}

处理程序

js
const { 
Formatter
,
Rsa
,
Aes
} =
require
('wechatpay-axios-plugin')
const { 'wechatpay-nonce':
wechatpayNonce
,
'wechatpay-serial':
wechatpaySerial
,
'wechatpay-signature':
wechatpaySignature
,
'wechatpay-timestamp':
wechatpayTimestamp
,
} =
headers
let
code
= 'SUCCESS',
message
=
undefined
if (
Math
.
abs
(
Formatter
.
timestamp
() -
wechatpayTimestamp
) >
MAXIMUM_CLOCK_OFFSET
) {
code
= 'FAIL'
message
= 'Over clock offset'
} else if (!
Object
.
hasOwn
(
platformCertificates
,
wechatpaySerial
)) {
code
= 'FAIL'
message
= 'platform certificate not exists'
} else if (!
Rsa
.
verify
(
Formatter
.
joinedByLineFeed
(
wechatpayTimestamp
,
wechatpayNonce
,
json
),
wechatpaySignature
,
platformCertificates
[
wechatpaySerial
]
)) {
code
= 'FAIL'
message
= 'sign mismatched'
} // do your business // ... // ... const {
id
,
create_time
,
resource_type
,
event_type
,
resource
: {
ciphertext
,
nonce
,
associated_data
}, } =
JSON
.
parse
(
json
)
const {
transaction_id
,
mchid
,
trade_state
,
bank_type
,
success_time
,
payer
,
out_trade_no
,
appid
,
trade_state_desc
,
trade_type
,
attach
,
scene_info
,
sp_mchid
,
sub_mchid
,
combine_mchid
,
user_repaid
,
trade_scene
,
parking_info
,
promotion_detail
,
} =
JSON
.
parse
(
Aes
.
AesGcm
.
decrypt
(
nonce
,
apiv3Key
,
ciphertext
,
associated_data
))
// do your business // ... // ... const
response
= {
code
,
message
}

正常应答头(headers)

Status: 200

正常应答报文(body)

json
{
  "code": "SUCCESS"
}

注意:

  • 同样的通知可能会多次发送给商户系统。商户系统必须能够正确处理重复的通知。 推荐的做法是,当商户系统收到通知进行处理时,先检查对应业务数据的状态,并判断该通知是否已经处理。如果未处理,则再进行处理;如果已处理,则直接返回结果成功。在对业务数据进行状态检查和处理之前,要采用数据锁进行并发控制,以避免函数重入造成的数据混乱。
  • 如果在所有通知频率后没有收到微信侧回调,商户应调用查询订单接口确认订单状态。
  • 特别提醒:商户系统对于开启结果通知的内容一定要做签名验证,并校验通知的信息是否与商户侧的信息一致,防止数据泄露导致出现“假通知”,造成资金损失。
  • 用户支付完成后,微信会把相关支付结果和用户信息发送给商户,商户需要接收处理该消息,并返回应答。
  • 对后台通知交互时,如果微信收到商户的应答不符合规范或超时,微信认为通知失败,微信会通过一定的策略定期重新发起通知,尽可能提高通知的成功率,但微信不保证通知最终能成功。(通知频率为15s/15s/30s/3m/10m/20m/30m/30m/30m/60m/3h/3h/3h/6h/6h - 总计 24h4m)

Released under the MIT License. (SITEMAP)