nginx实现反向代理网站并且替换网站内容
在原来nginx基础上新增
ngx_http_substitutions_filter_module（http://www.cnblogs.com/dudu/p/nginx-subs_filter.html）模块和
replace-filter-nginx-module（http://www.360doc.com/content/17/0611/23/597197_661995547.shtml）模块
replace-filter-nginx-module相关函数知识http://www.cnblogs.com/jimodetiantang/p/9486116.html
如下配置（可以访问test.phpindex.win看效果，也可以买个非大陆的服务器用来翻墙)
## Start 16.32 ##
server {
listen 80;
server_name test.phpindex.win;
# access_log logs/proxy34.access.log main;
# error_log logs/proxy34.error.log;
root html;
index index.html index.htm index.php;
## send request back to 16.32 ##
location / {
proxy_pass http://phpindex.win/;
#Proxy Settings
#proxy_redirect off; #替换location会用到 302跳转
proxy_set_header Host www.phpindex.win; # $host;不能使用$host变量
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;
proxy_max_temp_file_size 0;
proxy_connect_timeout 90;
proxy_send_timeout 90;
proxy_read_timeout 90;
proxy_buffer_size 4k;
proxy_buffers 4 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;
# proxy_set_header REMOTE-HOST $remote_addr;
# subs_filter <sup>.*?</sup> <sup>被替换了</sup> gr;
subs_filter www.phpindex.win test.phpindex.win;
replace_filter '<header>([\s\S]*?)</header>' '<header>$1<p style="width: 100px;height: 100px;color: black;position: fixed;background: #ffe403;">这就是网站劫持</p></header>' ig;
replace_filter_types text/plain text/css;
# replace_filter <body>([\s\S]*)</body> <sub>111$1324324</sub> ig;
}
}