Generate a sitemap with Java
source link: https://marco.dev/generate-a-sitemap-with-java
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Generate a sitemap with Java
This code dynamically generates a sitemap in Spring Boot
@RequestMapping(value = "/sitemap.xml", method = RequestMethod.GET,
produces = MediaType.APPLICATION_XML_VALUE)
@ResponseBody
public XmlUrlSet main() {
XmlUrlSet xmlUrlSet = new XmlUrlSet();
create(xmlUrlSet, "", XmlUrl.Priority.HIGH);
// List<String> containing with your urls
urls.forEach(
url -> create(xmlUrlSet, url, XmlUrl.Priority.MEDIUM));
return xmlUrlSet;
}
@XmlAccessorType(value = XmlAccessType.NONE)
@XmlRootElement(name = "urlset", namespace = "http://www.sitemaps.org/schemas/sitemap/0.9")
public class XmlUrlSet {
@XmlElements({@XmlElement(name = "url", type = XmlUrl.class)})
private Collection<XmlUrl> xmlUrls = new ArrayList<>();
public void addUrl(XmlUrl xmlUrl) {
xmlUrls.add(xmlUrl);
}
public Collection<XmlUrl> getXmlUrls() {
return xmlUrls;
}
}
Possible errors
No issues with Bing, it digest everything ;-)
The sitemap doesn't appear immediately in the results after the submission
The answer has to be MediaType.APPLICATION_XML_VALUE
, if forgotten the xml will not be processed (http will answer with a json header) without any error message.
Error: Your Sitemap or Sitemap index file doesn't properly declare the namespace.
Google doesn't like if you have multiple namespaces`prefixes declared. ex.:
<ns2:urlset xmlns:ns2="http://www.sitemaps.org/schemas/sitemap/0.9">
<url>
<loc>https://marco.dev</loc>`
To make Google happy add a package-info.java
to your package and add the followin line:
@javax.xml.bind.annotation.XmlSchema(namespace = "http://www.sitemaps.org/schemas/sitemap/0.9", elementFormDefault = javax.xml.bind.annotation.XmlNsForm.QUALIFIED, xmlns = { @javax.xml.bind.annotation.XmlNs(namespaceURI = "http://www.sitemaps.org/schemas/sitemap/0.9", prefix = "") })
package ... // your package
This will remove the namespace from the xml file
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