HTTPS 是 HTTP over Secure Socket Layer,以安全为目标的 HTTP 通道,所以在 HTTPS 承载的页面上不允许出现 http 请求,一旦出现就是提示或报错: Mixed Content: The page at ‘https://www.taobao.com/‘ was loaded over HTTPS, but requested an insecure image ‘http://g.alicdn.com/s.gif’. This content sho…