php - 使用 BBC RSS 提要，但新闻报道会被多次显示-6ren

php - 使用 BBC RSS 提要，但新闻报道会被多次显示

转载作者：数据小太阳更新时间：2023-10-29 02:39:09

我正在尝试从 BBC RSS 提要中读取 XML 数据，并且已成功读取数据，但是，新闻报道显示的次数过多。我希望每个故事都显示在自己的容器中(即 div 元素)。相反，它会在 46 个容器中的每一个容器中显示所有新闻故事(目前有 46 个故事)。

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
    <link rel="stylesheet" href="styles.css">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>

    <title> Hijacked News </title>

    <script>
    $(document).ready(function(){
        $.ajax({
            type:"GET",
            url: "newsStore.php",
            cache: false,
            dataType: "xml",
            success: parse_rss
        });
    });

    function parse_rss(xml){
        //get feed
        $(xml).find('item').each(function(){
            var item_title

            item_title = $(xml).find("item").find("title").text();
            //var image_url = $(xml).find("thumbnail").last().attr("url");

            $('#title_div').append(item_title);

            //adding all titles to each title_div atm
            //$("#title_div").append('<p>' + item_title + '</p>');      
        });
    }
    </script>
</head>
<body>
    <div class="page-wrap">
        <div id="main-content">
            <div class="header"></div>
            <div id="output">
                <div id="title_div"></div>
            </div>
        </div>
    </div>
</body>

非常感谢任何帮助。

编辑以下是后端脚本的代码:newsStore.php。

<?php
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Cache-Control: max-age=0");
header("Content-Type: text/xml");
?>
<?php
function get_url_contents($url){
  $crl = curl_init();
  $timeout = 5;
  curl_setopt ($crl, CURLOPT_URL,$url);
  curl_setopt ($crl, CURLOPT_RETURNTRANSFER, 1);
  curl_setopt ($crl, CURLOPT_CONNECTTIMEOUT, $timeout);
  $ret = curl_exec($crl);
  curl_close($crl);
  return $ret;
}
$url = "http://feeds.bbci.co.uk/news/rss.xml?edition=int#";
$str = file_get_contents($url);
echo $str;
?>

最佳答案

回调传递给.each()可以接受两个参数

Type: Function( Integer indexInArray, Object value ).

因此回调可以利用代表每个 <item> 的对象值节点。将项目对象传递给 $() 后, 调用 .find()获取标题(然后是标题节点的文本)。

$(xml).find('item').each(function(index, item) {
    var item_title = $(item).find("title").text();

请参阅下面的实际操作。

注意:因为 AJAX 在这里不起作用，除非我们让 php 脚本在同一个域中工作，所以我更改了 $.ajax()出于演示目的 - 我不建议定期这样做。另外 - 我将提要数据缩减为几个结果

$(document).ready(function() {
  $.ajax({
    type: "GET",
    url: "newsStore.php",
    cache: false,
    dataType: "xml",
        jsonp: "callback",
    success: parse_rss
  });
});

function parse_rss(xml) {
  //get feed
  $(xml).find('item').each(function(index, item) {
    var item_title = $(item).find("title").text();
    //var image_url = $(xml).find("thumbnail").last().attr("url");

    //$('#title_div').append(item_title);

    //adding all titles to each title_div atm
    $("#title_div").append('<p>' + item_title + '</p>');      
  });
}
$.ajax = function(params) {
  var xml = '<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet title="XSL_formatting" type="text/xsl" href="/shared/bsp/xsl/rss/nolsol.xsl"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0" xmlns:media="http://search.yahoo.com/mrss/">    <channel>        <title><![CDATA[BBC News - Home]]></title>        <description><![CDATA[BBC News - Home]]></description>        <link>http://www.bbc.co.uk/news/</link>        <image>            <url>http://news.bbcimg.co.uk/nol/shared/img/bbc_news_120x60.gif</url>            <title>BBC News - Home</title>            <link>http://www.bbc.co.uk/news/</link>        </image>        <generator>RSS for Node</generator>        <lastBuildDate>Mon, 05 Dec 2016 20:33:05 GMT</lastBuildDate>        <copyright><![CDATA[Copyright: (C) British Broadcasting Corporation, see http://news.bbc.co.uk/2/hi/help/rss/4498287.stm for terms and conditions of reuse.]]></copyright>        <language><![CDATA[en-gb]]></language>        <ttl>15</ttl>        <item>            <title><![CDATA[Italy PM Matteo Renzi delays resignation until budget is passed]]></title>            <description><![CDATA[Italy\'s outgoing PM Matteo Renzi will resign after the 2017 budget is passed in coming days.]]></description>            <link>http://www.bbc.co.uk/news/world-europe-38209795</link>            <guid isPermaLink="true">http://www.bbc.co.uk/news/world-europe-38209795</guid>            <pubDate>Mon, 05 Dec 2016 20:03:30 GMT</pubDate>            <media:thumbnail width="2048" height="1152" url="http://c.files.bbci.co.uk/6A61/production/_92833272_mediaitem92833271.jpg"/>        </item>        <item>            <title><![CDATA[UK government puts case for Brexit powers]]></title>            <description><![CDATA[The government urges a verdict the "ordinary man and woman" would understand in the Brexit hearing.]]></description>            <link>http://www.bbc.co.uk/news/uk-politics-38200115</link>            <guid isPermaLink="true">http://www.bbc.co.uk/news/uk-politics-38200115</guid>            <pubDate>Mon, 05 Dec 2016 19:45:41 GMT</pubDate>            <media:thumbnail width="1920" height="1080" url="http://c.files.bbci.co.uk/120F/production/_92832640_supremect.jpg"/>        </item>        <item>            <title><![CDATA[Justin Ross Harris sentenced to life for son\'s hot car death]]></title>            <description><![CDATA[A US father who left his toddler to die in a hot car has been sentenced to life in prison without parole.]]></description>            <link>http://www.bbc.co.uk/news/world-us-canada-38215954</link>            <guid isPermaLink="true">http://www.bbc.co.uk/news/world-us-canada-38215954</guid>            <pubDate>Mon, 05 Dec 2016 19:25:28 GMT</pubDate>            <media:thumbnail width="624" height="351" url="http://c.files.bbci.co.uk/7B2D/production/_92433513_cap2342ture.jpg"/>        </item>     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isPermaLink="true">http://www.bbc.co.uk/news/world-middle-east-38209743</guid>            <pubDate>Mon, 05 Dec 2016 18:45:07 GMT</pubDate>            <media:thumbnail width="976" height="549" url="http://c.files.bbci.co.uk/24CB/production/_91491490_bana_top.jpg"/>        </item>        <item>            <title><![CDATA[Freiburg murder: Germans urged not to scapegoat migrants]]></title>            <description><![CDATA[Germans are urged not to scapegoat migrants, as an Afghan youth is suspected of rape and murder.]]></description>            <link>http://www.bbc.co.uk/news/world-europe-38211944</link>            <guid isPermaLink="true">http://www.bbc.co.uk/news/world-europe-38211944</guid>            <pubDate>Mon, 05 Dec 2016 17:44:02 GMT</pubDate>            <media:thumbnail width="976" height="549" url="http://c.files.bbci.co.uk/13ED8/production/_92842618_freiburgtreeafp5dec.jpg"/>        </item>        <item>            <title><![CDATA[Iran fashion workers jailed for \'spreading 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<link>http://www.bbc.co.uk/news/world-asia-38205153</link>            <guid isPermaLink="true">http://www.bbc.co.uk/news/world-asia-38205153</guid>            <pubDate>Mon, 05 Dec 2016 05:31:28 GMT</pubDate>            <media:thumbnail width="976" height="549" url="http://c.files.bbci.co.uk/1688F/production/_92830329_keyreu.jpg"/>        </item>        <item>            <title><![CDATA[Fake it to make it]]></title>            <description><![CDATA[Many of the fake news websites that sprang up during the US election campaign have been traced to a small city in Macedonia, where teenagers are pumping out sensationalist stories to earn cash from advertising.]]></description>            <link>http://www.bbc.co.uk/news/magazine-38168281</link>            <guid isPermaLink="true">http://www.bbc.co.uk/news/magazine-38168281</guid>            <pubDate>Mon, 05 Dec 2016 02:43:17 GMT</pubDate>            <media:thumbnail width="976" height="549" url="http://c.files.bbci.co.uk/ECC3/production/_92811606_istock-519161938.jpg"/>        </item>        <item>            <title><![CDATA[Precious objects]]></title>            <description><![CDATA[People who have fled the war in Syria tell us what objects they carried with them when they left their homes.]]></description>            <link>http://www.bbc.co.uk/news/world-middle-east-38182738</link>            <guid isPermaLink="true">http://www.bbc.co.uk/news/world-middle-east-38182738</guid>            <pubDate>Mon, 05 Dec 2016 03:27:27 GMT</pubDate>            <media:thumbnail width="976" height="549" url="http://c.files.bbci.co.uk/74D7/production/_92811992_nizar2_bbc.jpg"/>        </item>        <item>            <title><![CDATA[Sleeping on toilet floors]]></title>            <description><![CDATA[How Chris Gardner went from sleeping rough with his young son on the floor of a public toilet to the life of a multi-millionaire investor.]]></description>            <link>http://www.bbc.co.uk/news/business-38144980</link>            <guid isPermaLink="true">http://www.bbc.co.uk/news/business-38144980</guid>            <pubDate>Mon, 05 Dec 2016 00:03:06 GMT</pubDate>            <media:thumbnail width="976" height="549" url="http://c.files.bbci.co.uk/52E7/production/_92732212_140208_chrisgardner_-106_original.jpg"/>        </item></channel></rss>';
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php - 使用 BBC RSS 提要，但新闻报道会被多次显示