icon放在public文件下 死活修改不了,把icon放在static下 重启
<link rel="icon" href="static/favicon.ico" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" type="image/x-icon" />
<link rel="shortcut icon" href="static/favicon.ico" target="_blank" rel="external nofollow" target="_blank" rel="external nofollow" type="image/x-icon" />