我正在尝试在服务器上安装 glassfish（我也安装了 Java）但是出现了以下错误：
Remote server does not listen for requests on [localhost:4848]. Is the server up?
No such local command: enable-secure-admin. Unable to access the server to execute the command remotely. Verify the server is available.
Command enable-secure-admin failed.
我遵循了以下指南：https://www.digitalocean.com/community/tutorials/how-to-install-glassfish-4-0-on-ubuntu-12-04-3
但当我尝试使用该asadmin enable-secure-admin命令时，出现了错误。有人知道原因以及该怎么办吗？:)