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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"codetitle">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...
}
 

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Nginx,跳转

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