Java(安卓) IOException:预期索引7的权威: http://

Question

我正在尝试使这个功能从互联网下载文件。我向它传递两个参数:从- url到网络上的文件，到-本地文件路径；打开流时抛出IOException的问题：

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;
}

正如您所看到的，它还打印文件的url，而且它很好。您可以将其粘贴到浏览器中，然后它将打开文件。

有人知道是什么原因和/或如何修复它吗？

我有两种使用权限- INTERNET和WRITE_EXTERNAL_STORAGE

Answer 1

尝试使用URLEncoder以UTF-8格式对您的url进行编码。

样本代码：

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