Question

我正在寻找一个基于java的站点地图生成器api，我可以使用它来生成站点地图和目标URL。如果通过在其中添加额外的代码来定制api，那将是很好的。

站点地图生成器适用于已托管的站点。感谢。

此致 Ĵ

Answer 1

我会说编写自己的库非常简单，因为XML模式非常简单。您可以使用JAXB片段输出执行此操作。

下面是一个关于如何编写此XML的示例。您必须制作Sitemap和Url JAXB POJO，但这很容易。我可能稍后会在gist上发布整个代码。

重要的是这些方法采用迭代器而不是列表。因此，您可以从数据库加载块中的Url对象，而不是将加载内存中所有对象的其他库。

    protected final static String URLSET_START = "<?xml version='1.0' encoding='UTF-8'?>\n" + 
                    "<urlset xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n" + 
                    "         xsi:schemaLocation=\"http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd\"\n" + 
                    "         xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\">\n";
    protected final static String URLSET_END = "\n</urlset>";

    protected final static String SITEMAPINDEX_START = "<?xml version='1.0' encoding='UTF-8'?>\n" + 
    "<sitemapindex xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n" + 
                    "         xsi:schemaLocation=\"http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/siteindex.xsd\"\n" + 
                    "         xmlns=\"http://www.sitemaps.org/schemas/sitemap/0.9\">\n";
    protected final static String SITEMAPINDEX_END = "\n</sitemapindex>";

    public static void writeSitemapIndex(Writer writer, Iterator<? extends Sitemap> mappings) throws IOException {
            writeXml(writer, SITEMAPINDEX_START, mappings, SITEMAPINDEX_END);
    }

    public static long writeUrlset(Writer writer, Iterator<Url> urls) throws IOException {
            return writeXml(writer, URLSET_START, urls, URLSET_END);
    }

    private static long writeXml(Writer writer, String start, Iterator<?> it, String end) throws IOException {
            writer.write(start);
            long count = writeSubtree(writer, it);
            writer.write(end);
            return count;
    }

    public static long writeSubtree(Writer writer, Iterator<?> it) throws IOException {
            long size = 0;
            Marshaller m;
            try {
                    JAXBContext jc = JAXBContext.newInstance(Sitemap.class, Url.class);
                    m = jc.createMarshaller();
                    m.setProperty(Marshaller.JAXB_FRAGMENT, true);
                    m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
            } catch (PropertyException e) {
                    throw new DataBindingException(e);
            } catch (JAXBException e) {
                    throw new DataBindingException(e);
            }

            boolean first = true;
            while (it.hasNext()) {
                    if (first) first = false;
                    else writer.write("\n");
                    try {
                            m.marshal(it.next(), writer);
                    } catch (JAXBException e) {
                            throw new IOException(e);
                    }
                    size++;
            }
            return size;
    }

Answer 2

这是一个 - sitemapgen4j：

http://code.google.com/p/sitemapgen4j/

基于Java的站点地图生成器api

2 个答案: