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jsfservletsweb.xmlwelcome-file

Access the value of welcome-file-list in web.xml

Is there any way of accessing the welcome-file-list element in the web.xml without having to re-parse the web.xml itself?

Solution

  • No. There's no public JSF or Servlet API for that.

    Best what you can do is to grab JAXP+XPath.

    InputStream input = FacesContext.getCurrentInstance().getExternalContext().getResourceAsStream("/WEB-INF/web.xml");
Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(input);
XPathExpression xpath = XPathFactory.newInstance().newXPath().compile("web-app/welcome-file-list/welcome-file");
NodeList nodes = (NodeList) xpath.evaluate(document, XPathConstants.NODESET);

for (int i = 0; i < nodes.getLength(); i++) {
    String welcomeFile = nodes.item(i).getFirstChild().getNodeValue().trim();
    // ...
}

    If you happen to use JSF utility library OmniFaces, you can use its WebXml utility class.

    List<String> welcomeFiles = WebXml.INSTANCE.getWelcomeFiles();

    See also: