1.nigin添加一段配置

  server {
        listen 80; 
        # this is the key !!!!! 
        proxy_set_header Host $host;
        location /client/pids {
            proxy_pass http://10.103.13.103:3200/client/pids;
        }
        location /interface/client/pids {
            proxy_pass http://10.103.13.103:3200/interface/client/pids;
        }
        ......

2.gateway网关配置

有一个过滤器PreserveHostHeaderGatewayFilter，用来在gateway转发请求的时候把原始请求的host头部带上，转发给目标服务。

- id: auth-service
  uri: lb://auth-service
  predicates:
    - Path=/api/auth/**,/api/oauth/dd/**
  filters:
    - StripPrefix=1
    - PreserveHostHeader #发送网关原始主机头:

转自：https://www.cnblogs.com/abu1314/articles/13123654.html

spring cloud gateway和nigix 路由转发时携带域名头信息

原文：https://www.cnblogs.com/duanxz/p/14780228.html