File object from URL with http or https

Question

Can be obtain a File object from URL? I try something like

URL url = new URL(urlString);
File file = Paths.get(url.toURI()).toFile();

but it obtained exception

java.nio.file.FileSystemNotFoundException: Provider "http" not installed

or https... depending on the protocol used. Assume that urlString contain a valid address.

Exist an altenative to get it the File object from URL or I'm on wrong way?

No. Only file: URLs represent files on the host system. Are you sure you need a File? You can read from a URL with its openStream method. — VGR
– VGR, Commented Jan 4, 2019 at 15:03

Daniel B. · Accepted Answer · 2019-01-04 15:44:07Z

2

You need to open a connection to the URL, start getting the bytes the server is sending you, and save them to a file.

Using Java NIO

URL website = new URL("http://www.website.com/information.asp");
ReadableByteChannel rbc = Channels.newChannel(website.openStream());
FileOutputStream fos = new FileOutputStream("information.html");
fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);

Using Apache Common IO

Another approach is to use the apache common io library, and you can do it like this:

URL url = new URL(urlString);
File file = new File("filename.html");
FileUtils.copyURLToFile(url, file);

edited Jan 4, 2019 at 15:44

answered Jan 4, 2019 at 15:38

Daniel B.

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Comments

Loic Lacomme · Accepted Answer · 2019-07-05 12:20:25Z

2

Try to use URI.getPath() before passing it to Paths.get()

URL url = new URL(urlString);
File file = Paths.get(url.toURI().getPath()).toFile();

answered Jul 5, 2019 at 12:20

Loic Lacomme

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File object from URL with http or https

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