[Repair and optimized version] December's latest pro-test repair payment gateway early check-in source code/with tutorial/payment received/optimized scanning process

Friends shared that H5 gets up early to check in, so I won't introduce the specific model. Everyone should have an impression of this model. This model has been released before. After completing this model, the gateway address of the payment platform was changed. Members and friends from the previous day responded to this problem after downloading and building it, but they didn't explain it to him. While updating the gateway address, I also optimized the code scanning process, so that all callbacks and logins will be OK. The tutorial is the same as before, and it will be OK as soon as you build it. Everything has been repaired, so be careful and make no mistakes. The things are as shown below. Take them if you need them ~ The tutorial has also been updated.
The new H5 early check-in tutorial has been packaged together.