在nginx配置文件种的http节点下：
server {
listen 8005;
server_name localhost;
location /{
proxy_set_header X_Real_IP $remote_addr;
proxy_set_header X-Forward-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_pass http://127.0.0.1:3000;
proxy_redirect off;
}
}
浏览器输入http://localhost:8005，nginx代理到http://localhost:3000/
原文：https://www.cnblogs.com/qk2014/p/9489467.html