java.net.UnknownServiceException: protocol doesn't support output

[DeSn]

Hi,

I recieve the following error : "java.net.UnknownServiceException: protocol doesn't support output" when I run the peace of code beneath.

Anyone?

authenticate("user", "pw");

URL destURL = new URL("file","max1","\\max1\public\test.txt");

buffedOut = new BufferedOutputStream(destURL.openConnection().getOutputStream());

 

[sedj]

URL.openConnection() returns an abstract class URLConnection. When you use the "file" protocol, the actual class that is returned for you is sun.net.

http://www.protocol.file.FileURLConnection.

This class overrides its parent class's (URLConnection) getOutputStream() so that output is not allowed on a file system object.

So in short, you cannot write to a file via a URL & URLConnection. You can however, read :

			URL url = new URL("file://\\java");
			URLConnection urlc = url.openConnection();
			System.err.println(urlc);
			BufferedReader br = new BufferedReader(new InputStreamReader(urlc.getInputStream()));
			String line = "";
			while ((line = br.readLine()) != null)
				System.err.println(line);

If you need to write, you will have to use a FileOutputStream or FileWriter/PrintWriter object.

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