Nginx代理Proxy Pass转发去除前缀

• 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。

参考：https://www.baifachuan.com/posts/37c56ce1.html