Recently, i used XSLT to parametrize an XML document. XSLT transformations are used to transform a Source document to a Destination document using a style sheet (XSL). To solve this problem the the source document is empty and the style sheet is the document itself with placeholders.
1 2 3 4 5 6 7 8 9 10 | <?xml version="1.0" encoding="UTF-8"?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:param name="param1" select="'defaultval1'" /> <xsl:param name="param2" select="'defaultval2'" /> <xsl:template match="/"> <people> <person age="{$param1}"><xsl:value-of select="$param2" /></person> </people> </xsl:template> </xsl:stylesheet> |
1 2 3 4 5 6 7 8 9 10 | File xsltFile = new File("template.xsl"); DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = factory.newDocumentBuilder(); Document emptySourceDoc = builder.newDocument(); TransformerFactory transformerFactory = TransformerFactory.newInstance(); Transformer xsltTransformer = transformerFactory.newTransformer(new StreamSource(xsltFile)); xsltTransformer.setParameter("param1", "value1"); xsltTransformer.setParameter("param2", "value2"); StreamResult result = new StreamResult(System.out); xsltTransformer.transform(new DOMSource(emptySourceDoc), result); |
Cant we have the placeholders in the XML source document? I am unaware of any straightforward way to substitute placeholders in a Source document using style sheets and passing parameters. It also seems using a DOMSource for the xslt file seems to be an issue. More on that here.
One more thing is you dont need to escape XML characters before passing the String as a parameter to the XSLT transformer. Try a simple experiment, disable-output-escaping=”yes” to xsl:value-of tag.
1 | <xsl:value-of select="$param2" disable-output-escaping="yes" /> |
Now, if you pass any of XML’s escape characters { “, ‘, <, >, &} in the string, it shouldn’t escape them and your xml file will be incorrectly generated. By default disable-output-escaping is set to “no” so escaping works fine.
