简单版本：

location / {
  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  proxy_set_header Host $http_host;
  proxy_redirect off;
  proxy_pass http://localhost:8080;
}

一般静态文件由 nginx 提供，所以可以这样写

root /home/demo/goproj/src/Test/public;
try_files $uri/index.html $uri.html $uri @goapp;

location @goapp {
  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  proxy_set_header Host $http_host;
  proxy_redirect off;
  proxy_pass http://localhost:8080;
}

server {
    listen 80;
    server_name 123.com;

    location / {
    proxy_pass    http://127.0.0.1:8080;
    proxy_redirect default;
        }
}

如果有2级目录则

        location /test {
        proxy_pass    http://127.0.0.1:8080;
        proxy_redirect default;
        }