Java(Android) IOException：索引 7 处预期权威：http://

我正在尝试使此功能从互联网下载文件。我向它传递了两个参数：from - 网络上文件的 url，to - 本地文件路径；它引发的问题IOException打开流时：

Authority expected at index 7: http://

这是我的代码：

private boolean downloadFile(String pathFrom, String pathTo)
{
    URL url;
    ReadableByteChannel rbc;
    FileOutputStream fos;

    try {
        url = new URL(pathFrom);
        rbc = Channels.newChannel(url.openStream());
        fos = new FileOutputStream(pathTo);
        fos.getChannel().transferFrom(rbc, 0, 1 << 24);
        return true;
    } catch (MalformedURLException e) {
        Log.e(TAG, "Failed to download file (" + pathFrom + ") because of malformed URL.");
    } catch (FileNotFoundException e) {
        Log.e(TAG, "Failed to download file (" + pathFrom + ") because FileNotFoundException occured when opening output stream: " + e.getMessage());
    } catch (IOException e) {
        Log.e(TAG, "Failed to download file (" + pathFrom + ") because IOException occured when transfering file or opening input stream: " + e.getMessage());
    }

    return false;
}

正如你所看到的，它还打印了文件的 url，这很好。您可以将其粘贴到浏览器中，然后它会打开该文件。

任何人都知道是什么原因导致它和/或如何解决它？

附：我两个都有使用权限 - INTERNET and WRITE_EXTERNAL_STORAGE

尝试使用以下方式对您的网址进行编码URLEncoder， 在里面UTF-8 format.

示例代码：

String encodedUrl = URLEncoder.encode(url.toString(), "UTF-8");