swagger-v3 ,单体项目中，添加这个配置

location ~* ^(/v3*|/swagger-ui/*){
       proxy_set_header Host $host;
       proxy_set_header  X-Real-IP  $remote_addr;
       proxy_set_header X-Forwarded-For $remote_addr;
       #proxy_set_header Host $host:$server_port;
       proxy_set_header X-Forwarded-Proto $scheme;
       proxy_set_header X-Forwarded-Port $server_port;
       proxy_pass http://ip:port;
}