Nginx服务器中HTTP 301跳转到带www的域名的方法

影者东升

从nginx的官方文档 documentation, 正确的nginx https 301跳转到带www域名方法的方法如下：
HTTP 301跳转到带www域名方法
复制代码代码如下:

server {
    listen     80;
    server_name  example.org;
    return     301 http://www.example.org$request_uri;
  }
 
  server {
    listen     80;
    server_name  www.example.org;
    ...
  }

HTTPS 301跳转到带www域名方法
复制代码代码如下:

server {
      listen 80;
      server_name www.domain.com;
      // $scheme will get the http protocol
      // and 301 is best practice for tablet, phone, desktop and seo
      return 301 $scheme://domain.com$request_uri;
  }
   
  server {
      listen 80;
      server_name domain.com;
      // here goes the rest of your config file
      // example 
      location / {
   
        rewrite ^/cp/login?$ /cp/login.php last;
        // etc etc...
   
      }
  }

   
要先用 nginx -v  命令检查你所说使用的nginx的版本. 下面是对于旧版本的nginx301跳转到带www域名方法从www.ksharpdabu.info 跳转到  ksharpdabu.info
复制代码代码如下:

server {
    server_name  www.domain.com;
    rewrite ^(.*) http://domain.com$1 permanent;
  }
 
  server {
    server_name  domain.com;
    #The rest of your configuration goes here#
  }

所以需要两个server段。
从ksharpdabu.info 跳转到  www.ksharpdabu.info
复制代码代码如下:

server {
    server_name  domain.com;
    rewrite ^(.*) http://www.domain.com$1 permanent;
  }
 
  server {
    server_name  www.domain.com;
    #The rest of your configuration goes here#
  }

按上面设置后，用rewrite的方法跳转到指定的域名下，利于SEO
下面是我举例，从www.google.com 跳转到 google.com的部分nginx配置内容:
复制代码代码如下:

server {
    server_name  www.google.com;
    rewrite ^(.*) http://google.com$1 permanent;
  }
  server {
       listen 80;
       server_name google.com;
       index index.php index.html;
       ####
       # now pull the site from one directory #
       root /var/www/www.google.com/web;
       # done #
       location = /favicon.ico {
          log_not_found off;
          access_log off;
       }
  }

网上还有一种不用rewirte的 方法，如下：
复制代码代码如下:

server {
    #listen 80 is default
    server_name www.example.com;
    return 301 $scheme://example.com$request_uri;
  }
 
  server {
    #listen 80 is default
    server_name example.com;
    ## here goes the rest of your conf...
  }

因为return可以用于所有的版本，而rewrite可能因为版本的不同，导致301出错。而且可以直接停止执行匹配和搜索。
下面包含了http和https的。同一个服务器。
复制代码代码如下:

server {
    listen 80;
    listen 443 ssl;
    server_name www.example.com;
    return 301 $scheme://example.com$request_uri;
  }
 
  server {
    listen 80;
    listen 443 ssl;
    server_name example.com;
    # rest goes here...
  }

$scheme 变量只会包含http 如果你的服务器只监听80端口(默认是80端口)同时监听的选项中不含ssl关键字 . 不适用这个变量，就不能获得你所想的要的跳转结果。
将所有http强制跳到https， SSL (personal config on UNIX with IPv4, IPv6, SPDY, ...):
复制代码代码如下:

#
# Redirect all www to non-www
#
server {
  server_name      www.example.com;
  ssl_certificate    ssl/example.com/crt;
  ssl_certificate_key  ssl/example.com/key;
  listen         *:80;
  listen         *:443 ssl spdy;
  listen         [::]:80 ipv6only=on;
  listen         [::]:443 ssl spdy ipv6only=on;
 
  return 301 https://example.com$request_uri;
}
#
# Redirect all non-encrypted to encrypted
#
server {
  server_name      example.com;
  listen         *:80;
  listen         [::]:80;
  return 301 https://example.com$request_uri;
}
#
# There we go!
#
server {
  server_name      example.com;
  ssl_certificate    ssl/example.com/crt;
  ssl_certificate_key  ssl/example.com/key;
  listen         *:443 ssl spdy;
  listen         [::]:443 ssl spdy;
  # rest goes here...
}
 
#
# Redirect all www to non-www
#
server {
  server_name      www.example.com;
  ssl_certificate    ssl/example.com/crt;
  ssl_certificate_key  ssl/example.com/key;
  listen         *:80;
  listen         *:443 ssl spdy;
  listen         [::]:80 ipv6only=on;
  listen         [::]:443 ssl spdy ipv6only=on;
 
  return 301 https://example.com$request_uri;
}
 
#
# Redirect all non-encrypted to encrypted
#
server {
  server_name      example.com;
  listen         *:80;
  listen         [::]:80;
 
  return 301 https://example.com$request_uri;
}
 
#
# There we go!
#
server {
  server_name      example.com;
  ssl_certificate    ssl/example.com/crt;
  ssl_certificate_key  ssl/example.com/key;
  listen         *:443 ssl spdy;
  listen         [::]:443 ssl spdy;
 
  # rest goes here...
}