遇到的问题 ：怎么看自己发送的格式和后台发送的格式
参考
http://www.php.cn/js-tutorial-396014.html
https://blog.csdn.net/qq737050283/article/details/79940104
https://blog.csdn.net/wopelo/article/details/78783442
https://blog.csdn.net/wupuyi/article/details/80269907?utm_source=blogxgwz2
https://segmentfault.com/a/1190000015261229