RSS訂閱描述回報「<」

Question

我想從這個飼料解析RSS數據：http://fulltextrssfeed.com/feeds.bbci.co.uk/news/rss.xml，這是使用FullTextRssFeed現場使用產生的。唯一的問題是，當我嘗試獲得描述時，我收到'<'，其他一切都正常！我已經試過到使用JSoup這一點，但我不知道怎麼樣。你能建議如何？ 我使用的代碼是一樣的，在this tutorial使用，但我已經取代使用的RSS URL。再次感謝！

Answer 1

在尋找關於如何做到這一點的想法在網上，我發現，這樣做實際上是illegal，因爲它讓內容的這種方法違反了使用很多的網絡資源我希望使用的條款。現在你將不得不堅持使用簡短的RSS源。

Answer 2

你的問題是因爲你的RSS提要裏面的描述包含html而不是純文本。下面是描述內容：

<div><span class="story-date"><span class="date">3 April 2013</span> <span class="time-text">Last updated at</span> <span class="time">23:25 ET</span></span> <p><img src="http://news.bbcimg.co.uk/media/images/66739000/jpg/_66739180_philpotts.jpg" width="464" height="261" alt="Mick and Mairead Philpott, Paul Mosley"/><span class="c2">Mick and Mairead Philpott, and Paul Mosley, will be sentenced on Thursday</span></p> <p class="introduction" id="story_continues_1">A couple convicted of killing six of their children in a house fire in Derby are due to be sentenced later.</p> <p>Mick and Mairead Philpott will reappear at Nottingham Crown Court where they were found guilty of six counts of manslaughter, along with their friend Paul Mosley, on Tuesday.</p> <p>The maximum sentence for the crime is life imprisonment.</p> <p>Mrs Justice Thirlwall was due to pass sentence on Wednesday but needed more time to consider mitigation.</p> <p>The court was told that Philpott, 56, was jailed for seven years in 1978 for attempting to murder a previous girlfriend and given a concurrent five-year sentence for stabbing the woman's mother.</p> <p>In 1991 he received a conditional discharge for assault after he head-butted a colleague</p> <p>And in 2010 he was given a police caution after slapping Mairead and dragging her outside by her hair.</p> <p>When Philpott set fire to his house in Victory Road, Derby, he was also facing trial over a road rage incident in which he punched a motorist in the face.</p> <p>He had admitted common assault in relation to the incident but denied dangerous driving.</p> <span class="cross-head">Rape allegation</span> <p>Police have also confirmed that they intend to "thoroughly" investigate an allegation that Philpott raped a woman several years ago.</p> <p>She made the allegation after the death of Philpott's children, but police decided to wait until the end of the manslaughter trial before investigating the complaint further.</p> <p>On Tuesday the jury returned unanimous manslaughter verdicts on Philpott and Mosley, 46, while Mairead Philpott, 32, was convicted by a majority.</p> <p>Jade Philpott, 10, John, nine, Jack, eight, Jesse, six, and Jayden, five, died on the morning of the fire on 11 May 2012.</p> <p>Mairead Philpott's son from a previous relationship, 13-year-old Duwayne, died later in hospital.</p> </div><img src="http://pixel.quantserve.com/pixel/p-89EKCgBk8MZdE.gif" border="0" height="1" width="1" /> 

你需要改變一些方式，它可以忽略的是描述裏面的html內容內的解析器。一旦你得到完整的html代碼片段，你可以在WebView中渲染它。我認爲通常CDATA是在XML數據（如RSS提要）內存在其他類型的XML內容（本例中爲HTML）時使用的。老實說，雖然我不熟悉它的來龍去脈，但我可能是不正確的。

Answer 3

你myRssFeed.getDescription()得到的HTML看起來是這樣的：

<div><span class="story-date"><span class="date">6 April 2013</span> <span class="time-text">Last updated at</span> <span class="time">08:57 ET</span></span> <p><img src="http://news.bbcimg.co.uk/media/images/51606000/jpg/_51606573_fa1d16c0-9c6c-4f82-b0b8-ab66ddd94f78.jpg" width="304" height="171" alt="Breaking news"/></p> <p class="introduction">Nelson Mandela has been discharged from hospital after treatment for pneumonia, South Africa's government has said.</p> <p>It said there had been "a sustained and gradual improvement in his condition".</p> <p>The 94-year-old was admitted on 27 March for a recurring lung infection and had fluid drained at the undisclosed hospital.</p> <p>Mr Mandela served as South Africa's first black president from 1994 to 1999 and is regarded by many as the father of the nation.</p> <p>The <a href="http://redirect.viglink.com?key=11fe087258b6fc0532a5ccfc924805c0&u=http%3A%2F%2Fwww.thepresidency.gov.za%2Fpebble.asp%3Frelid%3D15178">presidency statement read</a>: "Former President Nelson Mandela has been discharged from hospital today, 6 April, following a sustained and gradual improvement in his general condition.</p> <p>"The former president will now receive home-based high care. President [Jacob] Zuma thanks the hard working medical team and hospital staff for looking after Madiba so efficiently."</p> <p>Madiba is Mr Mandela's clan name.</p> <p>The statement continued: "[Mr Zuma] also extended his gratitude to all South Africans and friends of the Republic in Africa and around the world for support."</p> </div><img src="http://pixel.quantserve.com/pixel/p-89EKCgBk8MZdE.gif" border="0" height="1" width="1" /> 

使用Jsoup你可以試試這個（未經測試）：

而不是

feedDescribtion.setText(myRssFeed.getDescription()); 

使用這樣的：

feedDescribtion.setText(extractDescriptionText(myRssFeed.getDescription()); 

用以下方法：

private String extractDescriptionText(String description) { 
    StringBuffer b = new StringBuffer(); 
    Document dom = Jsoup.parse(description); 
    Elements paragraphs = dom.getElementsByTag("p"); 
    for (int i=1; i<paragraphs.size(); i++) { // start with 1 to skip the 'breaking news' paragraph 
     Element p = paragraphs.get(i); 
     b.append(p.text()); 
     b.append("\n"); // line-break after each paragraph 
    } 
    return b.toString(); 
} 

這應該有效。也許一些微調是必要的，但這可以通過Jsoup的幫助很容易地實現。

編輯：

這是extractDescriptionText()給出了上面的例子：

納爾遜·曼德拉已經從醫院治療肺炎 出院後，南非政府已經說。它說有 「他的病情持續和逐漸改善」。該 94歲考入3月27日爲一個反覆出現的肺部感染 ，並在流體未公開的醫院倒掉。曼德拉先生擔任 成爲南非第一位黑人總統1994年至1999年，是 被許多人視爲民族的父親認爲。總統聲明 的內容如下：「前總統納爾遜曼德拉已於4月6日從 醫院出院，繼續改善 。」前總統現在將獲得 家庭護理。總統[雅各布]祖馬感謝勤奮工作的 醫療隊和醫院的工作人員照顧麥迪巴，所以 有效。「麥迪巴是曼德拉先生的氏族名稱。聲明 繼續說：「[祖馬先生]還向非洲和非洲共和國的朋友以及全世界的 的南非 表示感謝，以獲得支持。」

Answer 4

我會評論，但我沒有足夠的分數。

我會建議使用雅虎管道重定向您的rss提要。你甚至可以選擇它重定向爲json而不是xml。

http://pipes.yahoo.com/pipes/

如果您的解析器正在大多數網站確定你去過這將解決您的問題最簡單的方法。