我正在尝试使用java解析this simple google RSS feed。我的目标是获得新闻文章的所有标题。但是，我的下面的代码不会这样做。我非常感谢你的帮助，谢谢。
解析方法：
public static String readLink(String urlAdress) throws IOException {
int i = 0;
URL rssUrl = null;
try {
rssUrl = new URL(urlAdress);
} catch (MalformedURLException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
}
BufferedReader in = null;
try {
in = new BufferedReader(new InputStreamReader(rssUrl.openStream()));
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
String articleTitles = "";
String line = in.readLine();
while (line != null) {
i ++;
System.out.println("Line is not null");
if (line.contains("<title>")) {
System.out.println("Found <title>");
int firstPos = line.indexOf("<title>");
String temp = line.substring(firstPos);
temp = temp.replace("<title>", "");
int lastPos = temp.indexOf("</title>");
temp = temp.substring(0, lastPos);
articleTitles += temp + "\n";
if (i > 6) {
break;
}
}
}
try {
in.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return articleTitles;
}
输出：
Text: technology - Google News
technology - Google News
technology - Google News
technology - Google News
technology - Google News
technology - Google News
technology - Google News
*就这样我只需用这一行调用方法：
System.out.print("Text: " + readLink("https://news.google.com/news/feeds?cf=all&ned=us&hl=en&q=" + word + "&output=rss"));
答案 0 :(得分：0)
我知道您可能想手动执行此操作，但我想我提到jsoup是解析HTML的绝佳工具！
答案 1 :(得分：0)
Bro，您为什么坚持使用RSS feed。 NewsAPI JSON可以帮助您获取最新新闻。您不需要解析json。有一个名为Easy News的库，它通过调用方法本身来提供最新消息。无需解析JSON。你可以试试看。
List <Map> list=EasyNews.getNewsByKeywords("bitcoin");
此行将根据查询返回新闻列表：
{"status":"ok","totalResults":156210,"articles":[{"source":{"id":null,"name":"Youbrandinc.com"},"author":"Scott Scanlon","title":"Bitcoin Bitcoin Bitcoin BITCOIN!! So Sue Us.","description":"Crypto Briefing exists to advocate for the safe and responsible integration of blockchain and cryptocurrency into mainstream life. We believe. Our goal is to grow the crypto community – to help new converts understand the basics, and to help more experienced …","url":"https://www.youbrandinc.com/crytocurrency/bitcoin-bitcoin-bitcoin-bitcoin-so-sue-us/","urlToImage":"https://www.youbrandinc.com/wp-content/uploads/2018/05/Bitcoin-Trademarked-In-The-UK-In-Patent-Troll-Style-Action-1024x538.jpg","publishedAt":"2018-05-31T01:03:10Z"},{"source":{"id":null,"name":"Dailyfx.com"},"author":"Valentin Aufrand, Analyste, Valentin Aufrand","title":"Bitcoin, Bitcoin Cash, Bitcoin Gold, quelles différences ?","description":"Après le Bitcoin Cash, c’est le Bitcoin Gold qui s’est vu créé le mardi 24 octobre suite à une division entre la communauté Bitcoin.","url":"https://www.dailyfx.com/francais/actualite_forex_trading/fondamentaux/rapports_speciaux/2017/10/26/Bitcoin-Bitcoin-Cash-Bitcoin-Gold-quelles-differences.html","urlToImage":null,"publishedAt":"2017-10-26T10:30:00Z"},{"source":{"id":null,"name":"Github.com"},"author":"cl-bitcoin","title":"cl-bitcoin: cl-bitcoin","description":"cl-bitcoin - Peer to peer money","url":"https://github.com/cl-bitcoin/cl-bitcoin","urlToImage":"https://avatars0.githubusercontent.com/u/39051405?s=400&v=4","publishedAt":"2018-05-07T10:08:22Z"},{"source":{"id":null,"name":"Bleepingcomputer.com"},"author":"ergrgergreg","title":"Bitcoin SuPpOrt 18005716109 Bitcoin","description":"Bitcoin SuPpOrt 18005716109 Bitcoin - posted in Windows 10 Support: Bitcoin SuPpOrt 18005716109 Bitcoin\n \nBitcoin SuPpOrt 18005716109 Bitcoin\n \nBitcoin SuPpOrt 18005716109 Bitcoin\n \nBitcoin SuPpOrt 18005716109 Bitcoin\n \nBitcoin SuPpOrt 18005716109 Bitcoin\n \nB…","url":"https://www.bleepingcomputer.com/forums/t/673721/bitcoin-support-18005716109-bitcoin/","urlToImage":"https://www.bleepingcomputer.com/forums/public/style_images/master/meta_image.png","publishedAt":"2018-03-21T15:46:13Z"},{"source":{"id":null,"name":"Linux.org.ru"},"author":"cheetah111v","title":"Bitcoin","description":"Много ли на ЛОРе интересующихся или даже может быть участников разработки или даже может быть инвесторов криптовалюты? bitcoin","url":"https://www.linux.org.ru/forum/talks/14253680","urlToImage":"https://www.linux.org.ru/img/good-penguin.png","publishedAt":"2018-06-01T09:03:57Z"},{"source":{"id":null,"name":"Newsbtc.com"},"author":"Joseph Young","title":"44 Bitcoin Forks Have Emerged Within 10 Months, Crypto Investors Not Convinced","description":"Bitcoin Private, Bitcoin Diamond, Bitcoin Gold, Bitcoin Atom, Bitcoin Candy, and Bitcoin Pizza are some of the 44 bitcoin forks that have emerged since the initial Bitcoin Cash hard fork in August of last year, as TNW reported. Within the past 10 months, 44 f…","url":"https://www.newsbtc.com/2018/06/25/44-bitcoin-forks-emerged-within-10-months-investors-not-taking-seriously/","urlToImage":"https://s3.amazonaws.com/main-newsbtc-images/2018/06/25033022/shutterstock_685257826.jpg","publishedAt":"2018-06-25T08:00:51Z"},{"source":{"id":null,"name":"Hackernoon.com"},"author":"BambouClub","title":"Bitcoin Has Cashflow: Lending Bitcoin","description":"There is a fallacy that Bitcoin has no CashFlow. That’s what Warren Buffet thinks.","url":"https://hackernoon.com/bitcoin-has-cashflow-lending-bitcoin-75733438f01a","urlToImage":"https://cdn-images-1.medium.com/max/1200/1*8F0GleFn0N-61Rf9u5V13w.png","publishedAt":"2018-05-21T01:49:44Z"},{"source":{"id":null,"name":"Deviantart.com"},"author":null,"title":"Bitcoin","description":"","url":"https://merrchantfintec.deviantart.com/art/Bitcoin-751093874","urlToImage":"https://orig00.deviantart.net/01da/f/2018/174/3/b/bitcoin_by_merrchantfintec-dcf6jqq.jpg","publishedAt":"2018-06-23T07:24:10Z"},{"source":{"id":null,"name":"Dribbble.com"},"author":"Alexei Vella","title":"Bitcoin","description":"© Alexei Vella. \nPress Z to ZOOM!","url":"https://dribbble.com/shots/4756919-Bitcoin","urlToImage":"https://cdn.dribbble.com/users/768890/screenshots/4756919/bct.jpg","publishedAt":"2018-06-27T14:01:37Z"},{"source":{"id":null,"name":"Thingiverse.com"},"author":"KhanKudo","title":"Bitcoin","description":"Got bored and quickly made a bitcoin.I suggest painting or printing it in gold.","url":"https://www.thingiverse.com/thing:2982578","urlToImage":"https://cdn.thingiverse.com/renders/dc/f7/c9/37/5a/05f3d4f49db5b3482f6468551c2697ca_preview_featured.jpg","publishedAt":"2018-06-29T09:07:57Z"},{"source":{"id":null,"name":"Levelup.com"},"author":"Staff LevelUp","title":"BitCoin","description":"Analizamos qué rayos es y cómo funciona la moneda del futuro que está en boca de todos Continuar leyendo »","url":"http://www.levelup.com/shows/Que-rayos-es/444037/BitCoin","urlToImage":"http://s3.amazonaws.com/www.levelup.com/public/uploads/images/527653_200x200.jpg","publishedAt":"2017-10-21T17:05:00Z"},{"source":{"id":null,"name":"Sostav.ru"},"author":null,"title":"Bitcoin","description":"Cryptocurrencies are gaining more and more popularity and on the background of this interest in them by the ordinary web users is justified. Is it really worth to get there if you do not understand anything? The answer is very simple - only the latest news in…","url":"http://www.sostav.ru/blogs/132684/23861/","urlToImage":null,"publishedAt":"2017-10-28T06:34:12Z"},{"source":{"id":null,"name":"Maketecheasier.com"},"author":"Andrew Braun","title":"Why Are There So Many Bitcoin Variants?","description":"There are plenty of cryptocurrencies around, and you can even create one yourself in minutes. Out of all these cryptocurrencies, there are plenty that come with the “Bitcoin” label that you will think are associated with Bitcoin. Think you have a handle on th…","url":"https://www.maketecheasier.com/why-so-many-bitcoin-variants/","urlToImage":"https://www.maketecheasier.com/assets/uploads/2018/05/bitcoin-types-feature.jpg","publishedAt":"2018-05-25T05:25:25Z"},{"source":{"id":"vice-news","name":"Vice News"},"author":"Jordan Pearson, Kate Lunau, Jason Koebler","title":"A Second Bitcoin Fork Is Looming and Battle Lines Are Being Drawn","description":"Bitcoin, Bitcoin Cash, and soon... Bitcoin Gold.","url":"https://motherboard.vice.com/en_us/article/mb3eja/a-second-fork-bitcoin-gold-is-looming-battle-lines-being-drawn","urlToImage":"https://video-images.vice.com/articles/59ee371b130e601dff1258c7/lede/1508784566985-shutterstock_400744033.jpeg?crop=1xw:0.8440514469453376xh;center,center&resize=1200:*","publishedAt":"2017-10-23T18:50:06Z"},{"source":{"id":null,"name":"Dribbble.com"},"author":"virender","title":"Bitcoin","description":"Bitcoin Flat Icons\n\nBuy this Icons\nhttps://www.iconfinder.com/iconsets/bitcoin-51","url":"https://dribbble.com/shots/4600055-Bitcoin","urlToImage":"https://cdn.dribbble.com/users/1607724/screenshots/4600055/bitcoin.png","publishedAt":"2018-05-17T04:46:00Z"},{"source":{"id":null,"name":"Dribbble.com"},"author":"Aleksandr Reva","title":"Bitcoin","description":"View on Dribbble","url":"https://dribbble.com/shots/4644508-Bitcoin","urlToImage":"https://cdn.dribbble.com/users/275406/screenshots/4644508/bitcoin_block_chain.png","publishedAt":"2018-05-29T12:07:08Z"},{"source":{"id":null,"name":"Yaplakal.com"},"author":"adm@yaplakal.com (МоркоФФка)","title":"Bitcoin","description":"только что сбросили UPD - весь отдел в слезах","url":"https://www.yaplakal.com/forum2/topic1670115.html","urlToImage":"https://s00.yaplakal.com/pics/pics_original/9/5/3/10380359.jpg","publishedAt":"2017-10-04T07:30:04Z"},{"source":{"id":null,"name":"Pcgameshardware.de"},"author":"BloodSteam","title":"Bitcoin","description":"Hallo, ich hab hier ein bisschen in Forum gesucht und leider kein Sammelthread �ber Bitcoins gefunden. Finde Bitcoins sehr interessant, nicht weil man","url":"http://extreme.pcgameshardware.de/wirtschaft-politik-und-wissenschaft/489880-bitcoin.html","urlToImage":null,"publishedAt":"2017-10-08T12:48:45Z"},{"source":{"id":null,"name":"Dribbble.com"},"author":"Parham Marandi","title":"Bitcoin","description":"Instagram | Twitter | Facebook","url":"https://dribbble.com/shots/3876171-Bitcoin","urlToImage":"https://cdn.dribbble.com/users/1061799/screenshots/3876171/bitcoinreq.png","publishedAt":"2017-10-16T01:29:31Z"},{"source":{"id":null,"name":"Thingiverse.com"},"author":"thatburritoth0","title":"Bitcoin","description":"a little bitcoin I designed in inventor","url":"https://www.thingiverse.com/thing:2595467","urlToImage":"https://cdn.thingiverse.com/renders/c1/e0/52/c8/b8/3d30b3981b3137fed63c9e5089f43abb_preview_featured.jpg","publishedAt":"2017-10-19T20:32:30Z"}]}