小泉博客在网站弄vip解析的时候，点击播放按钮无法播放，打开调试器看到报错
chrome浏览器下提示错误：
was loaded over HTTPS, but requested an insecure XMLHttpRequest endpoint
解决办法
<meta http-equiv="Content-Security-Policy" content="upgrade-insecure-requests">
可以在相应的页面的<head>里加上这句代码，意思是自动将http的不安全请求升级为https
https://thehackernews.com/2015/04/disable-mixed-content-warning.html
