场景：由于用户进入公众号时 网络出现切换，来访ip更换，会导致微信公众号网页授权的redirect_uri有两次不同ip的请求，最终出现错误code been used 40163
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- Raw code: Mini Program/Development/Capabilities/Industry capability/Ride Code/Raw code
- 3、 sample code: Mini Program/Development/Capabilities/Industry capability/Ride Code/Raw code
- 3、 sample code: Mini Program/Development/Capabilities/Industry capability/Ride Code/Scan Code Payment
- Scan Code Payment: Mini Program/Development/Capabilities/Industry capability/Ride Code/Scan Code Payment
- Return code: 小商店/Development/Capabilities/Commercial capabilities/Trading component/Standard Trading Components and Open Interfaces/Server interface/Get and verify QR code interface/Generate QR code
可以加下缓存，先从缓存取，娶不到再去调接口，调接口取到后放入缓存中。
code值相同