nginx反向代理处理问号匹配

某URL通过nginx做反向代理，当前URL中存在问号特殊字符处理方法。

假设URL地址为https://www.whsir.com/index.php?m=api&f=23wh233

符号前使用\进行转义

nginx反向代理location精确匹配，仅暴露固定的URL接口

        location = /index.php {
            if ($request_uri !~* ^/index.php\?m\=api\&f\=23wh233$) {
                return 404;
        }
            proxy_pass https://www.whsir.com/index.php?m=api&f=23wh233;
        }

location = /index.php {

if ($request_uri !~* ^/index.php\?m\=api\&f\=23wh233$) {

return 404;

}

proxy_pass https://www.whsir.com/index.php?m=api&f=23wh233;

}

如果想在index.php?m=api&f=23wh233后继续匹配，则通过location前缀匹配

        location ^~ /index.php {
            if ($request_uri !~* /index.php\?m\=api\&f\=23wh233) {
                return 404;
        }
            proxy_pass https://www.whsir.com;
        }