使用罗马图书馆获取 rss 的图片网址

Question

我有以下 rss 文件：

<?xml version="1.0" encoding="UTF-8" ?>
  <rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/">
   <channel>
     <title> ????? ???? </title>
     <link>http://www.saipanews.com/</link>
     <description></description>
     <language>fa</language>

       <item>
        <author></author>
        <pretitle></pretitle>
        <title>???? ????? ???? ????? ?? ?????? ???????? ?????? ????? ???? ???(?) ? ??? ???</title>
        <link>http://www.saipanews.com/view-6751.html</link>
        <pubdate>2016-04-20 10:58:00</pubdate>
        <description>????? ????: ???????? ???? ????????? ????? ?????? ?? ???????? ?????? ????? ??????? ???? ???(?) ? ??? ???? ?? ????? ?? ????? ????? ????? ? ?????? ????? ???? ????? ???.</description>
        <secid>0</secid>
        <typid>8</typid>
        <image>http://www.saipanews.com/media/image/jamali/jmali.JPG</image>
    </item>

    <item>
        <author></author>
        <pretitle></pretitle>
        <title>????? ??????? ??? ???? ?? ????? ???? ?? ??? ????? ??? </title>
        <link>http://www.saipanews.com/view-6748.html</link>
        <pubdate>2016-04-19 11:27:00</pubdate>
        <description>????? ????: ?? ????? ????? ???? ? ?? ??? ?? ?????? ?? ?????? ?? ????? ??????? ?????? ?? ?? ???????? ???? ??????? ? ???? ????? ??????? ?????? ???? ?? ????? ? ???? ?? ???? ??????? ?? ??? ???? ????? ???? ??? ?? ??????? ????? ??????? ?? ??????? ????? ????? ? ????? ????? ?? ????.</description>
        <secid>0</secid>
        <typid>8</typid>
        <image>http://www.saipanews.com/media/image/farhang%20ranandegi/252887_331.jpg</image>

    </item>
  </channel>
 </rss>

我想获取图片的网址。
我使用罗马图书馆，但没有找到任何解决方案。
如何使用罗马图书馆在项目中获取图像的网址？

Answer 1

我为了获得图像标签，在以下内容上构建新的 rss 解析器：

public class NewRssParser extends RSS094Parser implements WireFeedParser {

public NewRssParser() {
    this("rss_2.0");
}

protected NewRssParser(String type) {
    super(type);
}

protected String getRSSVersion() {
    return "2.0";
}

protected boolean isHourFormat24(Element rssRoot) {
    return false;
}

protected Description parseItemDescription(Element rssRoot, Element eDesc) {
    Description desc = super.parseItemDescription(rssRoot, eDesc);
    desc.setType("text/html"); // change as per
                                // https://rome.dev.java.net/issues/show_bug.cgi?id=26
    return desc;
}

public boolean isMyType(Document document) {
    boolean ok;
    Element rssRoot = document.getRootElement();
    ok = rssRoot.getName().equals("rss");
    if (ok) {
        ok = false;
        Attribute version = rssRoot.getAttribute("version");
        if (version != null) {
            // At this point, as far ROME is concerned RSS 2.0, 2.00 and
            // 2.0.X are all the same, so let's use startsWith for leniency.
            ok = version.getValue().startsWith(getRSSVersion());
        }
    }
    return ok;
}

@Override
public Item parseItem(Element arg0, Element arg1) {
    Item item = super.parseItem(arg0, arg1);

    Element imageElement = arg1.getChild("image", getRSSNamespace());
    if (imageElement != null) {
        String imageUrl = imageElement.getText();

        Element urlElement = imageElement.getChild("url");
        imageUrl = urlElement != null ? urlElement.getText() : imageUrl;

        Enclosure enc = new Enclosure();
        enc.setType("image");
        enc.setUrl(imageUrl);

        item.getEnclosures().add(enc);
    }

    return item;
}

}

在类中覆盖 parseItem 方法并添加获取图像元素的代码并将图像的 url 添加到 Enclosures。

然后将以下行添加到rome.properties文件：

WireFeedParser.classes=[包名称].NewRssParser

例子 ：

WireFeedParser.classes=ir.armansoft.newscommunity.newsgathering.parser.impl.NewRssParser