URL feedUrl = new URL(url);
SyndFeedInput input = new SyndFeedInput();
SyndFeed feed = input.build(new XmlReader(feedUrl));
List<SyndEntry> list = feed.getEntries();
Matcher m = null;
String topicId = null;
File file = null;
for (SyndEntry o : list) {
o.getUri()； // 所有的其它操作
}
