如果你打电话$ curl -I https://glaszetterdirect.nl 您可以看到响应字符集为UTF-8 这表明重定向是由Wordpress完成的，而不是由Web服务器完成的。
$ curl -I http://www.glaszetterdirect.nl
HTTP/1.1 301 Moved Permanently
Date: Fri, 05 Oct 2018 08:24:41 GMT
Expires: Fri, 05 Oct 2018 09:24:42 GMT
Cache-Control: max-age=3600
Location: https://glaszetterdirect.nl/wp-admin/
Content-Length: 0
Content-Type: text/html; charset=UTF-8
X-Backend: web02_vmm22
Server: PCX/Cache
Age: 2483
X-Cache-Hit: Yes
X-Cache-Hits: 3
X-Server: cache01
Connection: keep-alive
尝试访问时
http://www.glaszetterdirect.nl/wp-admin 将使用
iso-8859-1 字符集。
$ curl -I http://www.glaszetterdirect.nl/wp-admin
HTTP/1.1 301 Moved Permanently
Date: Fri, 05 Oct 2018 09:10:14 GMT
Location: http://www.glaszetterdirect.nl/wp-admin/
Content-Type: text/html; charset=iso-8859-1
X-Backend: web02_vmm22
Server: PCX/No-Cache
Age: 0
X-Cache-Hit: No
X-Cache-Hits: 0
Connection: keep-alive
您应该按照@Sally CJ的建议查看已安装的插件和自定义代码。
