java.lang.IllegalArgumentException: Unsupported element: rss
问题 I am trying to 'GET' a rss feed. public RssFeed(String url) { _url = url; String res = this.api.get(url); ByteArrayInputStream bis = new ByteArrayInputStream(res.getBytes()); try { bis.close(); } catch (IOException e) { e.printStackTrace(); } XMLDecoder decoder = new XMLDecoder(bis); try { Object xml = decoder.readObject(); _response = xml.toString(); } catch(Exception e) { e.printStackTrace(); } finally { decoder.close(); } } When I check what's inside of 'res'. It appears to get this entire