Nginx代理proxy pass配置去除前缀的实现

目录

  • 一个种方案是proxy_pass后面加根路径/.
  • 另一种方案是使用rewrite

使用Nginx做代理的时候,可以简单的直接把请求原封不动的转发给下一个服务。

比如,访问abc.com/appv2/a/b.html, 要求转发到localhost:8088/appv2/a/b.html

简单配置如下:

  upstream one {   server localhost:8088 weight=5;  }    server {    listen       80;    server_name     abc.com;    access_log "pipe:rollback /data/log/nginx/access.log interval=1d baknum=7 maxsize=1G" main;      location / {      proxy_set_header Host $host;      proxy_set_header X-Real-IP    $remote_addr;      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;      proxy_set_header X-NginX-Proxy true;        proxy_pass http://one;    }    }    

即,设置proxy_pass即可。请求只会替换域名。

但很多时候,我们需要根据url的前缀转发到不同的服务。

比如

abc.com/user/profile.html转发到 用户服务localhost:8089/profile.html

abc.com/order/details.html转发到 订单服务 localhost:8090/details.html

即,url的前缀对下游的服务是不需要的,除非下游服务添加context-path, 但很多时候我们并不喜欢加这个。如果Nginx转发的时候,把这个前缀去掉就好了。

一个种方案是proxy_pass后面加根路径/.

  server {    listen       80;    server_name     abc.com;    access_log "pipe:rollback /data/log/nginx/access.log interval=1d baknum=7 maxsize=1G" main;      location ^~/user/ {      proxy_set_header Host $host;      proxy_set_header X-Real-IP    $remote_addr;      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;      proxy_set_header X-NginX-Proxy true;        proxy_pass http://user/;    }      location ^~/order/ {      proxy_set_header Host $host;      proxy_set_header X-Real-IP    $remote_addr;      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;      proxy_set_header X-NginX-Proxy true;        proxy_pass http://order/;    }    }    

^~/user/表示匹配前缀是user的请求,proxy_pass的结尾有/, 则会把/user/*后面的路径直接拼接到后面,即移除user.

另一种方案是使用rewrite

  upstream user {   server localhost:8089 weight=5;  }  upstream order {   server localhost:8090 weight=5;  }      server {    listen       80;    server_name     abc.com;    access_log "pipe:rollback /data/log/nginx/access.log interval=1d baknum=7 maxsize=1G" main;      location ^~/user/ {      proxy_set_header Host $host;      proxy_set_header X-Real-IP    $remote_addr;      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;      proxy_set_header X-NginX-Proxy true;        rewrite ^/user/(.*)$ /$1 break;      proxy_pass http://user;    }      location ^~/order/ {      proxy_set_header Host $host;      proxy_set_header X-Real-IP    $remote_addr;      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;      proxy_set_header X-NginX-Proxy true;        rewrite ^/order/(.*)$ /$1 break;      proxy_pass http://order;    }    }    

注意到proxy_pass结尾没有/, rewrite重写了url。

关于rewrite

  syntax: rewrite regex replacement [flag]  Default: ―  Context: server, location, if    

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