Payment verification Signature payment failed? --app payment for WeChat payment

What is the problem, is there a problem with the data returned in the background?

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What is the problem, is there a problem with the data returned in the background?

Merchant Number key value needs to be checked, or Access_token

Check the algorithm that generated the signature

Oh, you're right about that, because of the signature problem. Sign in the background does not have algorithm MD5 encryption. And Package=sign=wxpay better be written like this, or the payment parsing fails

This problem should be the result of the incoming data on your side, and read their API documentation carefully.

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