如何使用 jquery（或其他 javascript）解析 iTunes 格式的播客 XML 提要中的数据？

Question

我在 think2loud.com 上找到了演示如何使用 jquery 解析 XML 文件。我已经下载了源文件并将它们上传到我自己的服务器，并且工作正常。当我尝试将其应用到我自己的 xml 文件（iTunes 播客提要）时，我没有得到任何输出。我想我有点不知所措了。

我想要的是仅第一个播客信息以以下格式显示：

< a href = 文件路径。 mp3>消息标题< / a >

消息描述

其中：

GUID 是文件路径

TITLE 是消息标题

ITUNES:SUBTITLE 是消息描述

这是我想要调整的演示代码示例：

   <script>
    $(document).ready(function(){
        $.ajax({
            type: "GET",
            url: "sites.xml",
            dataType: "xml",
            success: function(xml) {
                $(xml).find('site').each(function(){
                    var id = $(this).attr('id');
                    var title = $(this).find('title').text();
                    var url = $(this).find('url').text();
                    $('<div class="items" id="link_'+id+'"></div>').html('<a href="'+url+'">'+title+'</a>').appendTo('#page-wrap');
                    $(this).find('desc').each(function(){
                        var brief = $(this).find('brief').text();
                        var long = $(this).find('long').text();
                        $('<div class="brief"></div>').html(brief).appendTo('#link_'+id);
                        $('<div class="long"></div>').html(long).appendTo('#link_'+id);
                    });
                });
            }
        });
    });
 </script>

这是我想要解析的 XML 文件的摘录：

<?xml version="1.0" encoding="utf-8"?>
<rss xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd" version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
<channel>
    <atom:link rel="self" type="application/rss+xml" href="http://www.deepwaterchurch.com/podcast/podcast.xml" />
    <lastBuildDate>Mon, 15 Aug 2011 13:30:32 -0300</lastBuildDate>
    <title>Deep Water Podcast</title>
    <itunes:author>AJ Thomas</itunes:author>
    <link>http://www.deepwaterchurch.com</link>

    <generator>Podcast Maker v1.4.1 - http://www.lemonzdream.com/podcastmaker</generator>
    <description><![CDATA[The weekly message from Deep Water Church in Halifax, Nova Scotia.]]></description>
    <itunes:subtitle />
    <itunes:summary>The weekly message from Deep Water Church in Halifax, Nova Scotia.</itunes:summary>
    <language>en</language>
    <copyright>2007 Deep Water Church</copyright>
    <image>

        <url>http://www.deepwaterchurch.com/podcast/podcast_144.jpg</url>
        <title>Deep Water Podcast</title>
        <link>http://www.deepwaterchurch.com</link>
        <width>144</width>
        <height>144</height>
    </image>

    <itunes:image href="http://www.deepwaterchurch.com/podcast/podcast.jpg" />
    <category>Christianity</category>
    <itunes:category text="Religion &amp; Spirituality">
        <itunes:category text="Christianity" />
    </itunes:category>
    <category>Spirituality</category>
    <itunes:category text="Religion &amp; Spirituality">
        <itunes:category text="Spirituality" />

    </itunes:category>
    <category>Non-Profit</category>
    <itunes:category text="Government &amp; Organizations">
        <itunes:category text="Non-Profit" />
    </itunes:category>
    <itunes:keywords>deep water, deepwater, church, halifax, nova scotia, canada, jesus, aj thomas</itunes:keywords>
    <itunes:explicit>no</itunes:explicit>

    <item>
        <title>Hurry Up and Wait - Slow Down</title>
        <itunes:author>Deep Water</itunes:author>
        <description><![CDATA[Episode 2 of 2. Luke 10:38-42. A life that is ministry isn't just about being busy all the time-- we need to take time to sit at Jesus' feet and be quiet, too.]]></description>
        <itunes:subtitle>Episode 2 of 2. Luke 10:38-42. A life that is ministry isn&apos;t just about being busy all the time-- we need to take time to sit at Jesus&apos; feet and be quiet, too.</itunes:subtitle>
        <itunes:summary />

        <enclosure url="http://www.deepwaterchurch.com/podcast/Jen%20Ochej-August%2014%2C%202011.mp3" type="audio/mpeg" length="16625879" />
        <guid>http://www.deepwaterchurch.com/podcast/Jen%20Ochej-August%2014%2C%202011.mp3</guid>
        <pubDate>Mon, 15 Aug 2011 13:29:03 -0300</pubDate>
        <category>Christianity</category>
        <itunes:explicit>no</itunes:explicit>
        <itunes:duration>00:34:34</itunes:duration>

        <itunes:keywords>deep water, deepwater, church, halifax, nova scotia, canada, jesus, aj thomas</itunes:keywords>
    </item>

我一直在玩的演示的链接是 此处

就像我提到的，我希望仅从列表中提取最近更新的播客（第一个“项目”）。我显然不知所措！我希望得到一些指导。谢谢吨。

---

好吧，我已经成功了……有点。我将其附加到“正文”，但我想将其分配给特定的 DIV，就像原始示例一样。当我尝试将 link.appendTo('body'); 设置为 link.appendTo('podcast'); 时，我没有得到任何输出。 编辑：我想出了那部分。不过，仍然需要解决下一个问题的帮助。

其次，我希望能够在链接下放置该剧集的描述（XML 文件中的“itunes:subtitle”）。我们能让这一切发生吗？

Answer 1

尝试一下：

jQuery(
  function($)
  {
    $.get('sites.xml',
          function(xml)
          {
            var item=$('channel > item:first',xml);
            if(item.length)
            {
              var link=$('<a/>').attr('href',$('enclosure',item).attr('url'))
                                .text($('title',item).text());
                  //put it where you want to
                  link.appendTo('body');
            }
          },
          'xml')
  }
);

立即为我返回 http://www.deepwaterchurch.com/podcast/播客.xml

<a href="http://www.deepwaterchurch.com/podcast/Jen%20Ochej-August%2014%2C%202011.mp3">Hurry Up and Wait - Slow Down</a>