相关文章：
https://www.sohu.com/a/219944402_100048759
https://github.com/zxing/zxing/wiki/Barcode-Contents#wi-fi-network-config-android-ios-11
使用的网页：
http://www.zxing.appspot.com/generator
说明：
- 在iPhone上，用户只需打开相机应用程序，并将其对准二维码即可。将会出现一个“Wi-Fi二维码”的通知。如果用户点击它，就可以选择加入WiFi网络。他们所要做的就是点击加入或连接。
- 部分安卓手机也可以使用“相机”应用扫描二维码。但部分安卓用户需要下载二维码扫描应用程序才能扫描二维码。这些应用程序可以从Google Play商店获得。
Wi-Fi Network config (Android, iOS 11+)
使用类似“ MECARD”的语法来指定wi-fi配置。提示用户后，扫描此类代码将相应地配置设备的Wi-Fi。例：
WIFI:T:WPA;S:mynetwork;P:mypass;;| Parameter | Example | Description |
|---|---|---|
| T | WPA |
Authentication type; can be WEP or WPA or WPA2-EAP, or nopass for no password. Or, omit for no password. |
| S | mynetwork |
Network SSID. Required. Enclose in double quotes if it is an ASCII name, but could be interpreted as hex (i.e. "ABCD") |
| P | mypass |
Password, ignored if T is nopass (in which case it may be omitted). Enclose in double quotes if it is an ASCII name, but could be interpreted as hex (i.e. "ABCD") |
| H | true |
Optional. True if the network SSID is hidden. Note this was mistakenly also used to specify phase 2 method in releases up to 4.7.8 / Barcode Scanner 3.4.0. If not a boolean, it will be interpreted as phase 2 method (see below) for backwards-compatibility |
| E | TTLS |
(WPA2-EAP only) EAP method, like TTLS or PWD |
| A | anon |
(WPA2-EAP only) Anonymous identity |
| I | myidentity |
(WPA2-EAP only) Identity |
| PH2 | MSCHAPV2 |
(WPA2-EAP only) Phase 2 method, like MSCHAPV2 |
Order of fields does not matter. Special characters \, ;, ,, " and : should be escaped with a backslash (\) as in MECARD encoding. For example, if an SSID was literally "foo;bar\baz" (with double quotes part of the SSID name itself) then it would be encoded like: WIFI:S:\"foo\;bar\\baz\";;
格式：WIFI:S:<SSID>;T:<WPA|WEP|>;P:<password>;;
例如：
wifi信号SSID：AAA，
加密方式：WPA/WPA2
密码：12345678
结果：WIFI:S:AAA;T:WPA;P:12345678;;