微信H5支付无法唤起APP支付的问题

因为请求头部少了“Sec-Fetch-User: ?1”就不行了，可能和微信的安全机制有关

可以：

GET https://wx.tenpay.com/cgi-bin/mmpayweb-bin/checkmweb?prepay_id=xxx&package=xxx&redirect_url=xxx HTTP/1.1
Host: wx.tenpay.com
Connection: keep-alive
sec-ch-ua: "Google Chrome";v="89", "Chromium";v="89", ";Not A Brand";v="99"
sec-ch-ua-mobile: ?1
Upgrade-Insecure-Requests: 1
DNT: 1
User-Agent: Mozilla/5.0 (Linux; Android 10; MI 9 Transparent Edition) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.86 Mobile Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,/;q=0.8,application/signed-exchange;v=b3;q=0.9
Sec-Fetch-Site: cross-site
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Referer: http://m.xxx.com/
Accept-Encoding: gzip, deflate, br
Accept-Language: zh-CN,zh-TW;q=0.9,zh;q=0.8,en-US;q=0.7,en;q=0.6

不行：

GET https://wx.tenpay.com/cgi-bin/mmpayweb-bin/checkmweb?prepay_id=xxx&package=xxx&redirect_url=xxx HTTP/1.1
Host: wx.tenpay.com
Connection: keep-alive
sec-ch-ua: "Google Chrome";v="89", "Chromium";v="89", ";Not A Brand";v="99"
sec-ch-ua-mobile: ?1
Upgrade-Insecure-Requests: 1
DNT: 1
User-Agent: Mozilla/5.0 (Linux; Android 10; MI 9 Transparent Edition) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.86 Mobile Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,/;q=0.8,application/signed-exchange;v=b3;q=0.9
Sec-Fetch-Site: cross-site
Sec-Fetch-Mode: navigate
Sec-Fetch-Dest: document
Referer: http://m.xxx.com/
Accept-Encoding: gzip, deflate, br
Accept-Language: zh-CN,zh-TW;q=0.9,zh;q=0.8,en-US;q=0.7,en;q=0.6