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我尝试为 RSS 和 Atom 制作解析器,其中 RSS 提要显示标题,而 Atom 显示图像和描述以及链接。看来我的解析器只适用于 RSS。你能告诉我为什么吗?检查这个:

public void Get_Parse_Feed(String URL_link, Input_Streamer_Class is, List<String> headlines, List<String> links)
{
    try
    {
        // URL
        is = new Input_Streamer_Class();

        /*
         * 
         *             Reserved URLS:
         *             --> http://feeds.pcworld.com/pcworld/latestnews
         *             --> http://feeds2.feedburner.com/boy-kuripot
         *             --> http://feeds2.feedburner.com/phcreditcardpromos
         *             --> http://feeds.feedburner.com/blogspot/MKuf
         *             --> http://googleblog.blogspot.com/atom.xml
         * 
         */

        is.Set_URL(URL_link);

        // Set XML pull factory.
        XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
        factory.setNamespaceAware(false);
        XmlPullParser xpp = factory.newPullParser();

        // Picking up input stream...
        xpp.setInput(is.Get_Input_Stream(is.Get_URL()), "UTF_8");

        // Check for inside item.
        boolean insideItem = false;

        // Pick event type. (START_TAG, END_TAG, etc.)
        int eventType = xpp.getEventType();
        while(eventType != XmlPullParser.END_DOCUMENT)
        {
            if(eventType == XmlPullParser.START_TAG)
            {
                if(xpp.getName().equalsIgnoreCase("item"))
                {
                    insideItem = true;

                } else if(xpp.getName().equalsIgnoreCase("title")) {

                    if(insideItem)
                    {
                        headlines.add(xpp.nextText()); // --> Extract the headline.
                    }

                } else if(xpp.getName().equalsIgnoreCase("link")) {

                    if(insideItem)
                    {
                        links.add(xpp.nextText()); // --> Extract the link of article.
                    }

                }

            } else if((eventType == XmlPullParser.END_TAG) && xpp.getName().equalsIgnoreCase("item")) {

                insideItem = false;

            }

            eventType = xpp.next(); // --> Move to the next element.
        }

    } catch(MalformedURLException e) {

        e.printStackTrace();

    } catch(XmlPullParserException e) {

        e.printStackTrace();

    } catch(IOException e) {

        e.printStackTrace();

    }
}

每次当我找到本教程并为自己使用 MVC 进行管理时,结果都令人印象深刻。但是,当我尝试实现一个包含 Atom 提要的 URL 时,它没有显示出来。

4

1 回答 1

1

很明显结构不同,你需要2个不同的解析器!或 2 个合二为一(真的不知道会有多大帮助)

因为:

RSS 2.0:

<?xml version="1.0" encoding="utf-8"?>
<rss version="2.0">
        <channel>

                <title>Example Feed</title>
                <description>Insert witty or insightful remark here</description>
                <link>http://example.org/</link>
                <lastBuildDate>Sat, 13 Dec 2003 18:30:02 GMT</lastBuildDate>
                <managingEditor>johndoe@example.com (John Doe)</managingEditor>

                <item>
                        <title>Atom-Powered Robots Run Amok</title>
                        <link>http://example.org/2003/12/13/atom03</link>
                        <guid isPermaLink="false">urn:uuid:1225c695-cfb8-4ebb-aaaa-80da344efa6a</guid>
                        <pubDate>Sat, 13 Dec 2003 18:30:02 GMT</pubDate>
                        <description>Some text.</description>
                </item>

        </channel>
</rss>

原子 1.0:

<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">

        <title>Example Feed</title>
        <subtitle>Insert witty or insightful remark here</subtitle>
        <link href="http://example.org/"/>
        <updated>2003-12-13T18:30:02Z</updated>
        <author>
                <name>John Doe</name>
                <email>johndoe@example.com</email>
        </author>
        <id>urn:uuid:60a76c80-d399-11d9-b93C-0003939e0af6</id>

        <entry>
                <title>Atom-Powered Robots Run Amok</title>
                <link href="http://example.org/2003/12/13/atom03"/>
                <id>urn:uuid:1225c695-cfb8-4ebb-aaaa-80da344efa6a</id>
                <updated>2003-12-13T18:30:02Z</updated>
                <summary>Some text.</summary>
        </entry>

</feed>

比较这里,你的代码中的不同问题是在 atom 上你entry没有item在 rss 中!

于 2013-02-22T12:41:56.633 回答