How to retrieve information from server?

Hi,
I'm currently working on a project, which is implemented with JSP. The function of the JSP is to connect to different servers within the Intranet(IP address already known) and get database list & file list residing on each server. And then compose all those information into a table, and display them in JSP. I just wonder how can I connect to those server? Can I just set up a socket client? Once the connection between servers has been setup, how can I retreive information from server? Are there any reference I can use? Thank you very much for your considerations.
Myra

Actually, I need extract some information from the file, and those files are on the server. In this case, do you think I should use FTP client to visit server? The server is running with Weblogic.

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