请求 wp-admin/admin-ajax.php 返回 404 错误

问题描述

我已经从 Apache HTTP Server 切换到 Nginx，现在我正在使用的 wordpress 插件在使用正确注册的操作向 wp-admin/admin-ajax.PHP 发送请求时得到 404 错误响应：

https://projectname.com/wp-admin/admin-ajax.PHP/?action=my-ajax-action

PHP 和 Nginx 日志中没有错误。此外，当在 wp-admin/admin-ajax.PHP 文件顶部添加断点时，Xdebug 不会停止。所以这个文件似乎根本没有被调用。

这是我的 Nginx 配置（它实际上是一个 docker 容器，前面有一个 Apache HTTP Server 作为反向代理服务器）：

server {

   listen 443 ssl http2;
   listen [::]:443 ssl http2;

   index index.PHP index.html;
   root /var/www/html;
   server_name localhost;

   #SSL
   ssl_certificate /etc/ssl/certs/self-signed.crt;
   ssl_certificate_key /etc/ssl/private/self-signed.key;
   include ssl/ssl.conf;
   #include snippets/snakeoil.conf;


   error_log  /var/log/Nginx/https_error.log;
   access_log /var/log/Nginx/https_access.log;


   add_header scheme $scheme;
   add_header host $host;
   add_header uri $uri;


   location / {
       try_files $uri $uri/ /index.PHP?$args;
       #try_files $uri $uri/ $uri.html $uri.PHP$is_args$query_string;
       expires -1;
   }

   location ~ \.PHP$ {
       try_files $uri =404;
       fastcgi_split_path_info ^(.+\.PHP)(/.+)$;
       #fastcgi_split_path_info ^(.+?\.PHP)(/.*)$;
       fastcgi_pass backend:9000;
       fastcgi_index index.PHP;
       include fastcgi_params;
       fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
       fastcgi_param PATH_INFO $fastcgi_path_info;
       #include global/fastcgi_optimize.conf;
   }

   # Directives to send expires headers and turn off 404 error logging.
   location ~* ^.+\.(ogg|ogv|svg|svgz|eot|otf|woff|mp4|ttf|RSS|atom|jpg|jpeg|gif|png|ico|zip|tgz|gz|rar|bz2|doc|xls|exe|ppt|tar|mid|midi|wav|bmp|rtf)$ {
       access_log off; log_not_found off; expires -1;
   }


   include global/compression.conf;

}

任何可能导致 404 响应的想法？

解决方法

它返回 404，因为没有与此 URL 匹配的块。 PHP CGI 处理程序参数存在于第二个块中：

   location ~ \.php$ {
       try_files $uri =404;
       fastcgi_split_path_info ^(.+\.php)(/.+)$;
       #fastcgi_split_path_info ^(.+?\.php)(/.*)$;
       fastcgi_pass backend:9000;
       fastcgi_index index.php;
       include fastcgi_params;
       fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
       fastcgi_param PATH_INFO $fastcgi_path_info;
       #include global/fastcgi_optimize.conf;
   }

此块匹配任何以 .php 结尾的位置（而不是您提供的 URL）。所以你只需要像这样修改正则表达式：

   location ~ (.*\.php)(/.*)$ {
       try_files $uri =404;
       fastcgi_split_path_info ^(.+\.php)(/.+)$;
       #fastcgi_split_path_info ^(.+?\.php)(/.*)$;
       fastcgi_pass backend:9000;
       fastcgi_index index.php;
       include fastcgi_params;
       fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
       fastcgi_param PATH_INFO $fastcgi_path_info;
       #include global/fastcgi_optimize.conf;
   }

这也将匹配 .php 之后的斜杠后跟任意数量的字符。这应该与您的网址相符。

,

所以，admin-ajax.php 后面的斜杠是问题所在。 我刚刚在服务器级别专门为 wp-admin/admin-ajax.php/ 添加了重写规则，现在一切正常：

rewrite  ^/wp-admin/admin-ajax.php/(.*)$  /wp-admin/admin-ajax.php$1;

尽管在 location 块（或 fastcgi_split_path_info ？）中使用正则表达式会更优雅。