Comments (4)
fudiwei
commented on July 3, 2024
同一商户订单号（out_trade_no）只能调用一次下单接口。
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XxyGitHub
commented on July 3, 2024
同一商户订单号（
out_trade_no）只能调用一次下单接口。
如果第一次没有支付 下一次我的那个订单需要再次支付 是把本地的订单号重新赋值吗
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fudiwei
commented on July 3, 2024
如果第一次没有支付 下一次我的那个订单需要再次支付 是把本地的订单号重新赋值吗
你应该自行持久化下单时渠道返回的支付参数（例如 prepay_id、package、code_url 等）。客户端短时间内重复唤起支付时使用之前的支付参数即可；长时间再次唤起使用新的商户订单号重新调用微信支付下单接口。
另外建议把你自己业务系统里的“订单号”，跟微信支付接口里的“订单号”区分开。前者是“业务订单号”，标识的是你自己业务系统里的一笔交易；后者是“渠道订单号”，标识的是支付渠道系统里的一笔交易。1 个“业务订单号”可以关联 N 个“渠道订单号” —— 例如你自己业务系统里同一笔订单，可以在小程序里唤起微信支付但不付款、又在 App 里唤起微信支付但也不付款、最后在网页端唤起支付宝支付完成付款，这个过程中你自己的业务订单号始终不变，渠道订单号每次都是新的。
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XxyGitHub
commented on July 3, 2024
好的 明白了 非常感谢！
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