Special character in filename are not supported while copying using URI

Question

I need to copy the files(file name contains special character) from one path to another path using URI. But its throws an error. If its successfully copied, if the filename not contains special character. Could you please advise me how to copy the file name with special character using URI from one path to another path. I have copied the code and error below.

Code:-

import java.io.*;
import java.net.URI;
import java.nio.ByteBuffer;
import java.nio.channels.Channels;
import java.nio.channels.ReadableByteChannel;
import java.nio.channels.WritableByteChannel;

public class test {
    private static File file = null;
    public static void main(String[] args) throws InterruptedException, Exception {
        String from = "file:///home/guest/input/3.-^%&.txt";
        String to = "file:///home/guest/output/3.-^%&.txt";
        InputStream in = null;
        OutputStream out = null;
        final ReadableByteChannel inputChannel;
        final WritableByteChannel outputChannel;
        if (from.startsWith("file://")) {
            file = new File(new URI(from));
            in = new FileInputStream(file);
        }

        if (from.startsWith("file://")) {
            file = new File(new URI(to));
            out = new FileOutputStream(file);
        }

        inputChannel = Channels.newChannel(in);
        outputChannel = Channels.newChannel(out);

        test.copy(inputChannel, outputChannel);
        inputChannel.close();
        outputChannel.close();
    }

    public static void copy(ReadableByteChannel in, WritableByteChannel out) throws IOException {
        ByteBuffer buffer = ByteBuffer.allocateDirect(32 * 1024);
        while (in.read(buffer) != -1 || buffer.position() > 0) {
        buffer.flip();
        out.write(buffer);
        buffer.compact();
        }
  }
}

Error:--

Exception in thread "main" java.net.URISyntaxException: Illegal character in path at index 30: file:///home/maria/input/3.-^%&.txt
    at java.net.URI$Parser.fail(URI.java:2829)
    at java.net.URI$Parser.checkChars(URI.java:3002)
    at java.net.URI$Parser.parseHierarchical(URI.java:3086)
    at java.net.URI$Parser.parse(URI.java:3034)
    at java.net.URI.<init>(URI.java:595)
    at com.tnq.fms.test3.main(test3.java:29)
Java Result: 1

Thanks for looking into this...

Not sure but you can try encoding the filename ! – Sudhanshu Umalkar Mar 26 '13 at 16:53 — Sudhanshu Umalkar, Mar 26 '13 at 16:53

score 0 · Answer 1 · edited May 23 '17 at 12:04

0

The filenames should be %-escaped. For example, a space in the actual filename becomes a %20 in the URI. The java.net.URI class can do it for you if you use one of the constructors with several arguments:

new URI("file", null, "/home/guest/input/3.-^%&.txt", null);

See HTTP URL Address Encoding in Java.

edited May 23 '17 at 12:04

Community

1
1

answered Mar 26 '13 at 16:57

Étienne Miret

6,448
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Thanks its working. Could you please advise me why the below code not working. file = new File(new URI(file:///home/maria/input/3.-^%&.txt)) – user2040497 Mar 26 '13 at 18:09
The `^` and the `%` are special characters, they need escaping. `^` as `%5E` and `%` as `%25`. See the Wikipedia article I quoted. – Étienne Miret Mar 26 '13 at 20:29

score 0 · Answer 2 · answered Mar 26 '13 at 17:04

0

You can try to use the java.net.uri.

answered Mar 26 '13 at 17:04

Atropo

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Special character in filename are not supported while copying using URI

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