Zhifubao

v1.0.0

支付宝开放平台接入指南。Use for: (1) 选对支付产品——当面付/APP支付/手机网站/电脑网站/小程序支付的适用场景与费率结构, (2) 沙箱联调、RSA2 签名与异步通知验签的正确姿势, (3) 高频报错排查（ISV权限不足/签名错误/回调不来）。Alipay Open Platform integration guide: payment-product selection, sandbox testing, RSA2 signing, and async-notification pitfalls.

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