使用nginx做反向代理的时候，可以简单的直接把请求原封不动的转发给下一个服务。设置proxy_pass请求只会替换域名，如果要根据不同的url后缀来访问不同的服务，则需要通过如下方法：

方法一：加"/"

server {    listen              8000;    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 ;    }    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 ;    }}

^~/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。

方法二：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 ;    }    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 ;    }}

proxy_pass结尾没有/， rewrite重写了url。