HftpFileSystem.java 文件源码

private FileChecksum getFileChecksum(String f) throws IOException {
  final HttpURLConnection connection = openConnection(
      "/fileChecksum" + ServletUtil.encodePath(f),
      "ugi=" + getEncodedUgiParameter());
  try {
    final XMLReader xr = XMLReaderFactory.createXMLReader();
    xr.setContentHandler(this);
    xr.parse(new InputSource(connection.getInputStream()));
  } catch(SAXException e) {
    final Exception embedded = e.getException();
    if (embedded != null && embedded instanceof IOException) {
      throw (IOException)embedded;
    }
    throw new IOException("invalid xml directory content", e);
  } finally {
    connection.disconnect();
  }
  return filechecksum;
}