I'm new to xml parsing, I just need to modify the content of an xml response
Current xml bloc
<app:control xmlns:vaext="http://www.vizrt.com/atom-ext">
<app:draft>no</app:draft>
<vaext:state name="published" href="http://test.com/escenic/content/state/workflow/online_staging/published?role=journalist&role=editor&role=administrator&role=useradmin&role=reader&role=editeur_n1&role=publicite"></vaext:state>
</app:control>
<app:control xmlns:vaext="http://www.vizrt.com/atom-ext">
<app:draft>no</app:draft>
<vaext:state name="ready" href="http://test.comt/content/state/workflow/online_staging/published?role=editor">un-publish</vaext:state>
</app:control>
Currently, I can change the attributes "name" and "href" but the problem with the second part ( adding un-publish</vaext:state> )
InputSource src = new InputSource(new StringReader(xmlString));
Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(src);
Node state = document.getElementsByTagName("state").item(0);
Node currentstate = state.getAttributes().getNamedItem("name");
currentstate.setTextContent("ready");
Node href = state.getAttributes().getNamedItem("href");
href.setTextContent( "the new link");
CodePudding user response：
Do the transformation in XSLT:
<xsl:stylesheet version="3.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:vaext="http://www.vizrt.com/atom-ext">
<xsl:mode on-no-match="shallow-copy"/>
<xsl:template match="vaext:state">
<vaext:state
href="http://test.comt/content/state/workflow/online_staging/published?role=editor"
name="ready">un-publish</vaext:state>
</xsl:template>
</xsl:stylesheet>
and invoke it from Java:
Processor proc = new Processor(false);
Xslt30Transformer trans = proc.newXsltCompiler.compile(stylesheet).load30();
trans.transform(
new StreamSource(new File(input)),
proc.newSerializer(new File(output));
I've shown this using XSLT 3.0 and the Saxon API (disclaimer: my company's product) to save a few lines of code, but this one is well within the capabilities of the XSLT 1.0 processor that comes built in to the JDK.
CodePudding user response：
It can assign by setTextContent() of Node of DOM in org.w3c.dom.Node
node.setTextContent("un-publish");
Demo Code as Modify.java file.
import org.w3c.dom.*;
import org.xml.sax.SAXException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import java.io.*;
public class Modify {
private static final String FILENAME = "./before.xml";
private static final String FORMAT_XSLT = "./before-format.xslt";
public static void main(String[] args) {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
try (InputStream is = new FileInputStream(FILENAME)) {
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(is);
System.out.println("-------------- Before ----------------");
writeXml(doc, System.out);
NodeList listOfState = doc.getElementsByTagName("vaext:state");
Node state = listOfState.item(0);
if (state.getNodeType() == Node.ELEMENT_NODE) {
String name = state.getAttributes().getNamedItem("name").getTextContent();
if ("published".equals(name.trim())) {
state.getAttributes().getNamedItem("name").setTextContent("ready");
state.setTextContent("un-publish");
}
String href = state.getAttributes().getNamedItem("href").getTextContent();
// http://test.com/escenic/content/state/workflow/online_staging/published?role=journalist&role=editor&role=administrator&role=useradmin&role=reader&role=editeur_n1&role=publicite
// System.out.println(href);
String target = "http://test.comt/content/state/workflow/online_staging/published?role=editor";
state.getAttributes().getNamedItem("href").setTextContent(target);
}
// output to console
System.out.println("-------------- After ----------------");
writeXml(doc, System.out);
} catch (ParserConfigurationException | SAXException
| IOException | TransformerException e) {
e.printStackTrace();
}
}
// write doc to output stream
private static void writeXml(Document doc,
OutputStream output)
throws TransformerException, UnsupportedEncodingException {
TransformerFactory transformerFactory = TransformerFactory.newInstance();
// The default add many empty new line, not sure why?
// https://stackoverflow.com/questions/58478632/how-to-avoid-extra-blank-lines-in-xml-generation-with-java
// https://mkyong.com/java/pretty-print-xml-with-java-dom-and-xslt/
// Transformer transformer = transformerFactory.newTransformer();
// add a xslt to remove the extra newlines
Transformer transformer = transformerFactory.newTransformer(
new StreamSource(new File(FORMAT_XSLT)));
// pretty print
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.setOutputProperty(OutputKeys.STANDALONE, "no");
DOMSource source = new DOMSource(doc);
StreamResult result = new StreamResult(output);
transformer.transform(source, result);
}
}
Input XML as before.xml
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:app="http://www.w3.org/TR/html4/">
<app:control xmlns:vaext="http://www.vizrt.com/atom-ext">
<app:draft>no</app:draft>
<vaext:state name="published" href="http://test.com/escenic/content/state/workflow/online_staging/published?role=journalist&role=editor&role=administrator&role=useradmin&role=reader&role=editeur_n1&role=publicite"></vaext:state>
</app:control>
</xs:schema>
XSLT file as before-format.xslt name.
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output indent="yes" cdata-section-elements="address bio"/>
<xsl:strip-space elements="*"/>
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
Compile & Run it
$ javac Modify.java
$ java Modify
-------------- Before ----------------
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:app="http://www.w3.org/TR/html4/">
<app:control xmlns:vaext="http://www.vizrt.com/atom-ext">
<app:draft>no</app:draft>
<vaext:state href="http://test.com/escenic/content/state/workflow/online_staging/published?role=journalist&role=editor&role=administrator&role=useradmin&role=reader&role=editeur_n1&role=publicite" name="published"/>
</app:control>
</xs:schema>
-------------- After ----------------
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:app="http://www.w3.org/TR/html4/">
<app:control xmlns:vaext="http://www.vizrt.com/atom-ext">
<app:draft>no</app:draft>
<vaext:state href="http://test.comt/content/state/workflow/online_staging/published?role=editor" name="ready">un-publish</vaext:state>
</app:control>
</xs:schema>