Skip to main content

Python SDK for WeChat XPay (Virtual Payment) server-side APIs

Project description

微信支付虚拟支付 Python SDK

微信支付虚拟支付(XPay)服务端 API 的 Python SDK。

特性

  • 同步与异步 - 同时支持同步和异步操作
  • 类型提示 - 完整的类型注解支持
  • HTTP/2 - 基于 httpx,支持 HTTP/2
  • Webhook 解析 - 处理微信推送通知
  • 错误处理 - 完善的异常层次结构和错误码
  • 日志支持 - 可选的日志记录功能,便于调试

安装

pip install wechat-xpay

快速开始

同步客户端

from wechat_xpay import XPayClient

# 使用上下文管理器(推荐)
with XPayClient(
    app_id="你的_app_id",
    app_key="你的_app_key",
    env=0,  # 0=沙箱环境,1=生产环境
) as client:
    # session_key 在每次调用 API 时传入,因为它会定期过期
    balance = client.query_user_balance(
        openid="用户_openid",
        session_key="用户_session_key",
    )
    print(f"余额: {balance.balance}")
    print(f"赠送余额: {balance.present_balance}")

异步客户端

import asyncio
from wechat_xpay import XPayAsyncClient

async def main():
    # 使用异步上下文管理器(推荐)
    async with XPayAsyncClient(
        app_id="你的_app_id",
        app_key="你的_app_key",
        env=0,
    ) as client:
        balance = await client.query_user_balance(
            openid="用户_openid",
            session_key="用户_session_key",
        )
        print(f"余额: {balance.balance}")
        print(f"赠送余额: {balance.present_balance}")

asyncio.run(main())

为什么 session_key 要在每次调用时传入?

微信的 session_key 有生命周期,会定期过期(通常 30 天)。当它过期时,你需要重新授权用户获取新的 session_key

通过在每次 API 调用时传入 session_key 而不是在初始化时传入:

  • 你可以优雅地处理 session_key 过期
  • 不同用户可以使用同一个客户端实例,各自使用自己的 session_key
  • 你可以轮换 session_key 而无需重新创建客户端

API 覆盖

  • 用户代币管理 (query_user_balance, currency_pay, cancel_currency_pay, present_currency)
  • 订单管理 (query_order)
  • 退款 (refund_order)
  • 提现 (create_withdraw_order, query_withdraw_order)
  • 发货通知 (notify_provide_goods)
  • 商家余额 (query_biz_balance)
  • 广告金 (query_transfer_account, query_adver_funds, create_funds_bill)
  • 广告金账单 (query_funds_bill, query_recover_bill, download_adverfunds_order)
  • 转账账户绑定 (bind_transfer_account)
  • 道具管理 (start_upload_goods, query_upload_goods, start_publish_goods, query_publish_goods)
  • 投诉管理 (get_complaint_list, get_complaint_detail, response_complaint, complete_complaint, get_negotiation_history)
  • 文件上传 (upload_vp_file, get_upload_file_sign)
  • 账单下载 (download_bill, download_adverfunds_order)
  • Webhook 解析 (发货通知、代币支付通知、退款通知、投诉通知)

共计 29 个 API 端点,已全部实现。

使用示例

同步使用

from wechat_xpay import XPayClient

with XPayClient(
    app_id="wx1234567890",
    app_key="你的_app_key",
    env=0,
) as client:
    # 查询用户余额
    balance = client.query_user_balance(
        openid="用户_openid",
        session_key="用户_session_key",
    )
    print(f"余额: {balance.balance}")
    print(f"赠送余额: {balance.present_balance}")

    # 处理支付
    result = client.currency_pay(
        openid="用户_openid",
        session_key="用户_session_key",
        order_id="订单_123",
        amount=100,  # 代币数量
        payitem="商品描述",
    )
    print(f"订单 ID: {result.order_id}")

    # 退款
    result = client.refund_order(
        openid="用户_openid",
        session_key="用户_session_key",
        refund_order_id="退款_123",
        left_fee=1000,
        refund_fee=500,
        refund_reason="1",  # 商品问题
        req_from="1",  # 人工
        order_id="原订单_id",
    )
    print(f"退款订单 ID: {result.refund_order_id}")

异步使用

import asyncio
from wechat_xpay import XPayAsyncClient

async def main():
    async with XPayAsyncClient(
        app_id="wx1234567890",
        app_key="你的_app_key",
        env=0,
    ) as client:
        # 查询用户余额
        balance = await client.query_user_balance(
            openid="用户_openid",
            session_key="用户_session_key",
        )
        print(f"余额: {balance.balance}")

        # 并发处理多个支付(使用不同的 session_key)
        tasks = [
            client.currency_pay(
                openid=f"用户_{i}",
                session_key=f"session_key_{i}",  # 每个用户有自己的 session_key
                order_id=f"订单_{i}",
                amount=100,
                payitem=f"商品_{i}",
            )
            for i in range(3)
        ]
        results = await asyncio.gather(*tasks)
        for result in results:
            print(f"订单 ID: {result.order_id}")

asyncio.run(main())

处理 Webhook

from wechat_xpay.webhook import WebhookParser

parser = WebhookParser()

# 解析 JSON 负载
notification = parser.parse({
    "Event": "xpay_goods_deliver_notify",
    "OpenId": "用户_openid",
    "OutTradeNo": "订单_123",
    # ... 其他字段
})

print(f"事件类型: {notification.event}")
print(f"用户 OpenID: {notification.open_id}")

# 返回成功响应给微信
response = parser.success_response()

错误处理

from wechat_xpay import XPayClient
from wechat_xpay.exceptions import XPayAPIError, ERR_SESSION_KEY_EXPIRED

client = XPayClient(...)

try:
    balance = client.query_user_balance(
        openid="用户_openid",
        session_key="用户_session_key",
    )
except XPayAPIError as e:
    if e.errcode == ERR_SESSION_KEY_EXPIRED:
        print("会话已过期,请重新登录")
        # 重新授权用户获取新的 session_key
    else:
        print(f"API 错误: {e.errcode} - {e.errmsg}")

客户端生命周期管理

同步客户端

# 方式 1:上下文管理器(自动关闭)
with XPayClient(...) as client:
    result = client.query_user_balance(...)

# 方式 2:手动关闭
client = XPayClient(...)
try:
    result = client.query_user_balance(...)
finally:
    client.close()

异步客户端

# 方式 1:异步上下文管理器(自动关闭)
async with XPayAsyncClient(...) as client:
    result = await client.query_user_balance(...)

# 方式 2:手动关闭
client = XPayAsyncClient(...)
try:
    result = await client.query_user_balance(...)
finally:
    await client.close()

日志功能

SDK 支持可选的日志记录功能,可以记录所有 API 请求和响应信息,便于开发调试。

启用日志

import logging
from wechat_xpay import XPayClient

# 配置日志记录器
logger = logging.getLogger("wechat_xpay")
logger.setLevel(logging.DEBUG)

# 添加控制台处理器
console_handler = logging.StreamHandler()
console_handler.setLevel(logging.DEBUG)
formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
console_handler.setFormatter(formatter)
logger.addHandler(console_handler)

# 添加文件处理器(可选)
file_handler = logging.FileHandler("xpay.log", encoding="utf-8")
file_handler.setLevel(logging.DEBUG)
file_handler.setFormatter(formatter)
logger.addHandler(file_handler)

# 传入 logger 参数
with XPayClient(
    app_id="wx1234567890",
    app_key="your_app_key",
    env=0,
    logger=logger,  # 启用日志
) as client:
    balance = client.query_user_balance(
        openid="user_openid",
        session_key="user_session_key",
    )

日志内容

启用日志后,SDK 会记录:

  • 请求信息:API 端点、URL、请求参数(不包含敏感签名信息)
  • 响应信息:成功响应的数据
  • 错误信息:API 错误码和错误消息

日志级别:

  • DEBUG:记录所有请求和响应详情
  • ERROR:仅记录 API 错误

异步客户端日志

import logging
from wechat_xpay import XPayAsyncClient

logger = logging.getLogger("wechat_xpay")
logger.setLevel(logging.DEBUG)
handler = logging.StreamHandler()
handler.setFormatter(logging.Formatter('%(asctime)s - %(levelname)s - %(message)s'))
logger.addHandler(handler)

async with XPayAsyncClient(
    app_id="wx1234567890",
    app_key="your_app_key",
    env=0,
    logger=logger,
) as client:
    balance = await client.query_user_balance(
        openid="user_openid",
        session_key="user_session_key",
    )

不使用日志

如果不传入 logger 参数,SDK 不会记录任何日志(默认行为):

# 不传入 logger,不会记录日志
with XPayClient(
    app_id="wx1234567890",
    app_key="your_app_key",
    env=0,
) as client:
    balance = client.query_user_balance(
        openid="user_openid",
        session_key="user_session_key",
    )

认证

SDK 自动处理两种签名:

  • pay_sig: 使用 AppKey 签名,用于 API 认证(在客户端初始化时配置)
  • signature: 使用用户的 session_key 签名,用于用户态验证(每次 API 调用时传入)

环境

  • env=0: 沙箱环境(用于测试)
  • env=1: 生产环境

文档

查看 docs/plans/ 目录了解实现细节和 API 规范。

许可证

MIT

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

wechat_xpay-0.3.0.tar.gz (61.2 kB view details)

Uploaded Source

Built Distribution

If you're not sure about the file name format, learn more about wheel file names.

wechat_xpay-0.3.0-py3-none-any.whl (24.6 kB view details)

Uploaded Python 3

File details

Details for the file wechat_xpay-0.3.0.tar.gz.

File metadata

  • Download URL: wechat_xpay-0.3.0.tar.gz
  • Upload date:
  • Size: 61.2 kB
  • Tags: Source
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/6.1.0 CPython/3.13.7

File hashes

Hashes for wechat_xpay-0.3.0.tar.gz
Algorithm Hash digest
SHA256 50fbb17922121acc820670096f70539dc61036212bf8957153d614b24575ec99
MD5 2f0247df3d03a2e4ce4869ebf8f49e04
BLAKE2b-256 ac51539429dd458ba793d331db2644841f9119dd5358257971d68898b8e83069

See more details on using hashes here.

File details

Details for the file wechat_xpay-0.3.0-py3-none-any.whl.

File metadata

  • Download URL: wechat_xpay-0.3.0-py3-none-any.whl
  • Upload date:
  • Size: 24.6 kB
  • Tags: Python 3
  • Uploaded using Trusted Publishing? No
  • Uploaded via: twine/6.1.0 CPython/3.13.7

File hashes

Hashes for wechat_xpay-0.3.0-py3-none-any.whl
Algorithm Hash digest
SHA256 4fb36c336b6f065b7af369471b700d29a4c67795185b8bb4178f2bf2b963a504
MD5 c000a143791655f506aed092aedde999
BLAKE2b-256 4db7d1bd8839761599afcab50c78f7dde64fa3c08af9b3b77168009421d1fed7

See more details on using hashes here.

Supported by

AWS Cloud computing and Security Sponsor Datadog Monitoring Depot Continuous Integration Fastly CDN Google Download Analytics Pingdom Monitoring Sentry Error logging StatusPage Status page