是否存在使用geotools解析SLD文件的内置方法,该方法适用于SLD 1.0.0和SLD 1.1.0?
我还没有找到一种内置方式,但是一种可能的解决方案是从XML文件中检索SLD版本。取决于版本,可以使用适当的Configuration
类进行解析。
public Style createStyleFromSld(String uri) throws XPathExpressionException, IOException, SAXException, ParserConfigurationException {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document xmlDocument = db.parse(uri);
XPath xPath = XPathFactory.newInstance().newXPath();
String version = xPath.compile("/StyledLayerDescriptor/@version").evaluate(xmlDocument);
Configuration sldConf;
if (version != null && version.startsWith("1.1")) {
sldConf = new org.geotools.sld.v1_1.SLDConfiguration();
} else {
sldConf = new org.geotools.sld.SLDConfiguration();
}
StyledLayerDescriptor sld = (StyledLayerDescriptor) new DOMParser(sldConf, xmlDocument).parse();
NamedLayer l = (NamedLayer) sld.getStyledLayers()[0];
Style style = l.getStyles()[0];
return style;
}