curl http://127.0.0.1:8080/login?admin&passwd=12345678
curl -d “user=admin&passwd=12345678” http://127.0.0.1:8080/login
curl -H “Content-Type:application/json” -X POST -d '{“user”: “admin”, “passwd”:“12345678”}' http://127.0.0.1:8000/login