nginx 从 web 根重定向到 a，如果 404 则尝试 b

Question

我正在尝试修改我的 nginx 配置以从 web 根 ("/") 重定向到 /dir-a，然后如果这返回 404 重定向到 /dir-b 。不过，我不完全确定这如何或是否可行。

这就是我目前所拥有的......

server {
    listen   443 ssl;
    ssl on;
    ssl_certificate /xyz.crt;
    ssl_certificate_key /xyz.key;

    root /var/www/mysite;

    index index.php index.html index.htm index.nginx-debian.html;

    server_name _;

    client_max_body_size 2G;
    client_body_buffer_size 128k;

error_page 404 =200 /dir-b;
    location = / {
            try_files $uri $uri/ /dir-a;
    }

    # Serve static assets
    location ~* ^.+.(jpg|jpeg|gif|css|png|js|ico)$ {

            gzip  on;
            gzip_http_version 1.0;
            gzip_vary on;
            gzip_comp_level 9;
            gzip_proxied any;
            gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;
            gzip_buffers 16 8k;

            access_log off;
            expires max;
            add_header Cache-Control public;

            break;
    }

    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
    location ~ \.php$ {
            include snippets/fastcgi-php.conf;

            fastcgi_buffer_size 256k;
            fastcgi_buffers 8 256k;
            fastcgi_busy_buffers_size 256k;

            fastcgi_param HTTPS on;
            fastcgi_read_timeout 6000;
            fastcgi_param APPLICATION_ENV production;
            fastcgi_pass unix:/var/run/php5-fpm.sock;
    }

    # deny access to .htaccess files, if Apache's document root
    # concurs with nginx's one
    location ~ /\.ht {
            deny all;
    }
}

但这会返回 404 页面，所以我不知道从哪里开始。我需要它来尝试 dir-b。

Answer 1

error_page 404 /dir-b;    
location = / {
                rewrite "/" /dir-a permanent;
        }

但这将返回 404 代码，您可以更改它 error_page 404 =200 /dir-b;

location = / {
                rewrite "/" /dir-a permanent;
        }

这将返回状态码 200

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