Precautions for wechat official account development

1. JS Interface security domain name / Authorization callback domain name / The business domain name does not support IP Address 、 Port number and short chain domain name
2. Official account configures payment directory positioning ： With tp For example
   With no arguments ： www.xxx.com/index.php/Weixin/Pay/index Wexin grouping Pay Under the controller index Method payment
   Fill in ：www.xxx.com/index.php/Weixin/Pay/
   With parameters ：www.xxx.com/index.php/Weixin/Pay/id/1
   Fill in ： www.xxx.com/index.php/Weixin/Pay/id/
   With multiple parameters ：www.xxx.com/index.php/Weixin/Pay/id/1/state/1 Out-of-service / Format , The current page can only be referenced with a question mark www.xxx.com/index.php/Weixin/Pay?id=1&state=1
   Fill in ： www.xxx.com/index.php/Weixin/Pay
3. Wechat Authorization
   redirect uri： Check whether the domain name specified by the authorization callback in the code is consistent with the domain name configured in the official account , Inconsistencies can also lead to this error , Many mistakes in iphone It will be displayed on wechat .
   stay tp in , All pages are displayed through the portal file , Upload the file to when configuring the authorized domain name index.php Under the same level directory （ That is, under the root directory of the domain name ）
4. Wechat interface call appears the permission value is offline verifying
   This mistake is because config Not executed correctly , Or called JSAPI There was no introduction config Of jsApiList Parameters in . It is recommended to check in the following order ：
   confirm config Pass correctly .
   If it is called when the page is loaded JSAPI, It must be written in wx.ready In the callback .
   confirm config Of jsApiList Parameter contains this JSAPI.
5. Wechat picture preview previewImage Loading all the time , resolvent ： Complete the path of the picture , Change to Internet pictures