requet.getHeader("token") is null

Generally there are several situations:

There is no token added in the
1. request header.
2. token is underlined and intercepted by nginx. You need to add underscores_in_headers on;
   to the nginx header to release the interception.

server {listen 9090;server_name xxx.com;proxy_set_header X-Forwarded-Host $host;proxy_set_header X-Forwarded-Server $host;proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;proxy_set_header Host $host:$server_port; #here is the key point, so that the configuration will not lose the portunderscores_in_headers on;}