[wechat applet] interface generates customized homepage QR code

1、 background

A new function is developed on the original applet , Need to integrate Homepage . But in order not to affect the original business , And can test new functions . So we need to generate a new QR code , The user can scan the QR code to jump to the new function page .

2、 Method

2.1 Interface for generating QR code ： Get applet QR code | Wechat open documents Wechat Developer Platform documentation https://developers.weixin.qq.com/miniprogram/dev/OpenApiDoc/qrcode-link/qr-code/createQRCode.html Enter parameters according to this interface , adopt postman Call this interface to generate the required QR code .

2.2 Generate access_token The interface of

auth.getAccessToken | Wechat open documents Wechat Developer Platform documentation https://developers.weixin.qq.com/miniprogram/dev/api-backend/open-api/access-token/auth.getAccessToken.html3、 Concrete example

First step ： obtain access_token

  The second step ： Get QR code

The third step ： Save QR code

Click the red box in the lower right corner , You can save the generated QR code image .

20220728 Add ：

The interface to obtain the QR code needs to be in url Add access_token, Otherwise, an error will be reported