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- ── 被查的那笔单（读自上一发的原始应答，非手抄）──
- pay_trace_no = probe20260928152114qr
- pay_time = 20260928152114
- 上一发是否给了 trade_no : False （qrpay 返回表里本就没有这个字段）
- ── 将发送（不含密钥；sign 打码）──
- {
- "inst_no": "900112",
- "mch_no": "Y52211090004",
- "query_trace_no": "ea811eb1179d442e928aae84a0423aaf",
- "pay_trace_no": "probe20260928152114qr",
- "pay_time": "20260928152114",
- "sign": "<len=32>"
- }
- ── 出站 ──
- POST https://test.gdyfsk.com/yfpay/v3/queryorder
- bytes = 216
- ── 上游应答 ──
- http_code = 200, bytes = 481
- {
- "return_code": "FAIL",
- "return_msg": "订单信息不存在！",
- "result_code": null,
- "pay_type": null,
- "mch_name": null,
- "shop_name": null,
- "mch_no": null,
- "shop_no": null,
- "query_trace_no": null,
- "pay_trace_no": null,
- "pay_time": null,
- "total_amount": null,
- "end_time": null,
- "trade_no": null,
- "td_trade_no": null,
- "qd_trade_no": null,
- "user_id": null,
- "attach": null,
- "trade_state": null,
- "receipt_amount": null,
- "pay_amount": null,
- "coupon_amount": null,
- "discount_amount": null,
- "sign": "a3cb8169d863e438486a6ea0ae72fea7"
- }
- ── 入站验签（null 不参与）──
- 参与签名字段数 = 2
- 重算 == 上游 sign : True
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