Download binary file from Github using Java

Question

I\'m trying to download this file (http://github.com/downloads/TheHolyWaffle/ChampionHelper/ChampionHelper-4.jar) with the following method and it doesn\'t seem to work. I\'

Answer 1

Get the direct download link to the raw binary file e.g. https://github.com/xerial/sqlite-jdbc/blob/master/src/main/resources/org/sqlite/native/Windows/x86_64/sqlitejdbc.dll?raw=true by copying the View Raw link:

Finally use the following piece of code to download the file:

public static void download(String downloadURL) throws IOException
{
    URL website = new URL(downloadURL);
    String fileName = getFileName(downloadURL);

    try (InputStream inputStream = website.openStream())
    {
        Files.copy(inputStream, Paths.get(fileName), StandardCopyOption.REPLACE_EXISTING);
    }
}

public static String getFileName(String downloadURL)
{
    String baseName = FilenameUtils.getBaseName(downloadURL);
    String extension = FilenameUtils.getExtension(downloadURL);
    String fileName = baseName + "." + extension;

    int questionMarkIndex = fileName.indexOf("?");
    if (questionMarkIndex != -1)
    {
        fileName = fileName.substring(0, questionMarkIndex);
    }

    fileName = fileName.replaceAll("-", "");
    return URLDecoder.decode(fileName, "UTF-8");
}

You will also need the Apache Commons IO maven dependency for the FilenameUtils class:

    commons-io
    commons-io
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