nginx 根据请求参数动态proxy_pass后端域名

方法一

server {
  listen 80;
  server_name __proxy_resolver__;
  resolver 223.5.5.5;
/?proxy_schema=http&proxy_host=x.x.x.x:8080&proxy_url=/XXX/api?tId=123456&fooid=1234
set $proxy_schema 'http';
 set $proxy_host '';
 set $proxy_url '';
 if ( $request_uri ~ (proxy_schema=([^&]+))){
 set $proxy_schema $2;
 }
 if ( $request_uri ~ (proxy_host=([^&]+))){
 set $proxy_host $2;
 }
 if ($request_uri ~ (proxy_url=(.*)$)){
 set $proxy_url $2;
 }
 if ($proxy_url = '') {
 return 404;
 }
 if ($proxy_host = '') {
 return 404;
 }
 location / {
 proxy_pass $proxy_schema://$proxy_host$proxy_url;
 }
}

方法二

http://192.168.174.120/wbimg/?url=https://192.168.174.121/orj360/005UGUPIly1gwikvqim9rj31401404aa.jpg

server {
  listen 80;
  server_name 192.168.174.120;
  resolver 223.5.5.5;
location /~wbimg {
 if ($query_string ~* ^(.)url=(.)$) {
 set $url_ $2; #$2=https://192.168.174.121/orj360/005UGUPIly1gwikvqim9rj31401404aa.jpg
 }
 proxy_set_header Referer "https://weibo.com";
 proxy_pass $url_;
 }
 }

 

URL截取 跳转

location ~ ^/token/(.*)$ {
   return 302 http://www.baidu.com/top?tokenId=$1;
 }