各公众平台在配置接口域名时会验证开发者对域名的配置权, 生成随机的文本及字符串，让放置在域名根目录可以通过域名直接访问到即通过验证。
示例为验证域名 abc.com 可以通过根路由访问 6CysNYj8Hb.txt 响应体为字符串 01df2ddab4774ba2676a5563ccb79ffa。
$ curl https://abc.com/6CysNYj8Hb.txt
01df2ddab4774ba2676a5563ccb79ffa
方案一
配置有 root 的 server，直接把随机文档放置在该目录下即可，不需要重启 nginx 服务。
方案二
匹配路由，指定随机文档所在目录, 需要重启 nginx。
location ——* 6CysNYj8Hb/.txt {
root /data/ftp;
}
方案三（推荐）
匹配路由，直接返回需要验证的随机字符串，需要重启 nginx。
location = /6CysNYj8Hb.txt {
default_type text/html;
return 200 '01df2ddab4774ba2676a5563ccb79ffa';
}
补充：Nginx域名重定向
1、更改配置文件test.com.conf
[root@jimmylinux-001 vhost]# vim test.com.conf
server
{
listen 80;
server_name test.com test2.com test3.com;
index index.html index.htm index.php;
root /data/wwwroot/test.com;
if ($host != 'test.com' ) {
rewrite ^/(.*)$ http://test.com/$1 permanent;
}
}
2、curl测试
[root@jimmylinux-001 vhost]# /usr/local/nginx/sbin/nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
[root@jimmylinux-001 vhost]# /usr/local/nginx/sbin/nginx -s reload
[root@jimmylinux-001 vhost]# curl -x127.0.0.1:80 test2.com/index.html -I
HTTP/1.1 301 Moved Permanently
Server: nginx/1.12.1
Date: Thu, 07 Jun 2018 16:47:36 GMT
Content-Type: text/html
Content-Length: 185
Connection: keep-alive
Location: http://test.com/index.html
[root@jimmylinux-001 vhost]# curl -x127.0.0.1:80 test2.com/admin/index.html -I
HTTP/1.1 301 Moved Permanently
Server: nginx/1.12.1
Date: Thu, 07 Jun 2018 16:48:08 GMT
Content-Type: text/html
Content-Length: 185
Connection: keep-alive
Location: http://test.com/admin/index.html
[root@jimmylinux-001 vhost]# curl -x127.0.0.1:80 test3.com/admin/index.html/adjlfj -I
HTTP/1.1 301 Moved Permanently
Server: nginx/1.12.1
Date: Thu, 07 Jun 2018 16:48:35 GMT
Content-Type: text/html
Content-Length: 185
Connection: keep-alive
Location: http://test.com/admin/index.html/adjlfj
[root@jimmylinux-001 vhost]# curl -x127.0.0.1:80 test4.com/admin/index.html/adjlfj -I
HTTP/1.1 404 Not Found
Server: nginx/1.12.1
Date: Thu, 07 Jun 2018 16:48:43 GMT
Content-Type: text/html
Content-Length: 169
Connection: keep-alive
