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我正在創建一個android應用程序,它從rss飼料提取信息...直到現在我可以成功解析一個rss飼料......並顯示我需要的任何東西。如何從一些現有的RSS飼料創建一個新的和過濾的rss飼料
我想分析多個RSS提要,並根據這些網站上給出的標籤進行過濾...大多數rss將是feedburner rss。
有沒有辦法對許多RSS提要結合篩選它基於標籤,關鍵字等.....並創建一個單一的RSS提要
public class BaseFeedParser {
static String feedUrlString = "http://feeds.dzone.com/dzone/frontpage";
// names of the XML tags
static final String RSS = "rss";
static final String CHANNEL = "channel";
static final String ITEM = "item";
static final String PUB_DATE = "pubDate";
static final String DESCRIPTION = "description";
static final String LINK = "link";
static final String TITLE = "title";
private final URL feedUrl;
protected BaseFeedParser(){
try {
this.feedUrl = new URL(feedUrlString);
} catch (MalformedURLException e) {
throw new RuntimeException(e);
}
}
protected InputStream getInputStream() {
try {
return feedUrl.openConnection().getInputStream();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public List<Message> parse() {
final Message currentMessage = new Message();
RootElement root = new RootElement(RSS);
final List<Message> messages = new ArrayList<Message>();
Element itemlist = root.getChild(CHANNEL);
Element item = itemlist.getChild(ITEM);
item.setEndElementListener(new EndElementListener(){
public void end() {
messages.add(currentMessage.copy());
}
});
item.getChild(TITLE).setEndTextElementListener(new EndTextElementListener(){
public void end(String body) {
currentMessage.setTitle(body);
}
});
item.getChild(LINK).setEndTextElementListener(new EndTextElementListener(){
public void end(String body) {
currentMessage.setLink(body);
}
});
item.getChild(DESCRIPTION).setEndTextElementListener(new EndTextElementListener(){
public void end(String body) {
currentMessage.setDescription(body);
}
});
item.getChild(PUB_DATE).setEndTextElementListener(new EndTextElementListener(){
public void end(String body) {
currentMessage.setDate(body);
}
});
try {
Xml.parse(this.getInputStream(), Xml.Encoding.UTF_8, root.getContentHandler());
} catch (Exception e) {
throw new RuntimeException(e);
}
return messages;
}
}