1.17-1.18 rewrite实战

https://coding.net/u/aminglinux/p/nginx/git/blob/master/rewrite/example.md

域名重定向

场景1

不带条件的场景

效果：访问2.com 跳转到1.com

vim 2.com.conf
server {listen 80;server_name 2.com;root /data/t-nginx/2.com;rewrite /(.*) http://1.com/$1 permanent;
}

# curl -x127.0.0.1:80 2.com/1.php -I
HTTP/1.1 301 Moved Permanently
Server: nginx/1.8.0
Date: Wed, 24 Oct 2018 07:14:10 GMT
Content-Type: text/html
Content-Length: 184
Connection: keep-alive
Location: http://1.com/1.php

带条件的场景

场景2

效果：当访问不是2.com的时候，跳转到www.2.com

vim 2.com.conf
server {listen 80;server_name 2.com www.2.com;root /data/t-nginx/2.com;if ( $host != 'www.2.com' ){rewrite /(.*) http://www.2.com/$1 permanent;}
}
# curl -x127.0.0.1:80 2.com/1.php -I
HTTP/1.1 301 Moved Permanently
Server: nginx/1.8.0
Date: Wed, 24 Oct 2018 07:27:42 GMT
Content-Type: text/html
Content-Length: 184
Connection: keep-alive
Location: http://www.2.com/1.php

示例3（http跳转到https）：

server {listen 80;server_name 2.com www.2.com;root /data/t-nginx/2.com;rewrite /(.*) https://2.com/$1 permanent;
}
# !curl
curl -x127.0.0.1:80 2.com/1.php -I
HTTP/1.1 301 Moved Permanently
Server: nginx/1.8.0
Date: Wed, 24 Oct 2018 07:58:59 GMT
Content-Type: text/html
Content-Length: 184
Connection: keep-alive
Location: https://2.com/1.php

示例4（域名访问二级目录）

示例5（静态请求分离）

效果：当访问图片文件，流向媒体文件的时候，跳转到特定的域名

server {listen 80;server_name 2.com www.2.com;root /data/t-nginx/2.com;if ( $uri ~* 'jpg|png|gif|js$' ){rewrite /(.*) https://img.2.com/$1 permanent;}
}
# curl -x127.0.0.1:80 2.com/1.png -I
HTTP/1.1 301 Moved Permanently
Server: nginx/1.8.0
Date: Wed, 24 Oct 2018 08:28:18 GMT
Content-Type: text/html
Content-Length: 184
Connection: keep-alive
Location: https://img.2.com/1.png

6 防盗链

2.com.conf配置：

server {listen 80;server_name  www.2.com;
root /data/t-nginx/2.com;location ~* ^.+.(jpg|png|gif|js|mp3|mp4)${valid_referers none blocked server_names *.2.com 2.com;if ($invalid_referer){return 403;}}
}

curl 测试

# curl -x127.0.0.1:80 -e "http://linux.com" 'www.2.com/1.gif' -I
HTTP/1.1 403 Forbidden
Server: nginx/1.8.0
Date: Wed, 24 Oct 2018 09:10:37 GMT
Content-Type: text/html
Content-Length: 168
Connection: keep-alive
当用refers-->http://linux.com访问www.2.com/1.gif的时候，linux.com不属于白名单，所以会反馈return 403代码。

rewrite多个条件的并且

示例8：

location /{set $rule 0;if ($document_uri !~ '^/abc'){set $rule "${rule}1";}if ($http_user_agent ~* 'ie6|firefox'){set $rule "${rule}2";}if ($rule = "012"){rewrite /(.*) /abc/$1 redirect;}
}

解释：

• set $rule 0 变量$rule的值为0，第一个条件

• set $rule "${rule}1" 变量$rule的值为1，第二个条件

• set $rule "${rule}2" 变量$rule的值为2，第三个条

• if ($rule = "012") 当$rule满足0 1 2，也就是满足第一，二，三个条件的时候，会执行xxx。。。