如何提取sftp url sftp：// <user> @ <host> [： <port> ] [/ <directory> ]在Java中

Question

Below is the S FTP config in properties file where its contains all attribute in a single line.

Properties file:

xyz.sftp=sftp://user@india123.systems.in:9090/<directory>

Example:

sftp://<user>@<host>[:<port>][/<directory>]

I want to parse it and get the following values out of this URL:

1. user
2. host
3. port
4. path

Answer 1

You can use java.net.URI to parse URLs:

String ss = "sftp://user@india123.systems.in:9090/some/path";

URI uri = new URI(ss);
System.out.printf("URI scheme '%s' user '%s' host '%s' port '%s' path '%s'\n",
        uri.getScheme(), uri.getUserInfo(), uri.getHost(),
        uri.getPort(), uri.getPath());

Prints:

URI scheme 'sftp' user 'user' host 'india123.systems.in' port '9090' path '/some/path'

The java.net.URL class has similar parsing abilities, but it'll throw an exception in this case because it doesn't recognize the "sftp" scheme. To avoid that, you'd have to register a protocol handler for the scheme. Registering protocol handlers is apparently rather painful to do; this page describes one way to do it.