how to append node from xml document to existing xml document

Question

I have list of tournaments in my a.xml:

<tournaments>

    <tournament>
        <name>a</name>
    </tournament>

    <tournament>
        <name>b</name>
    </tournament>

    <tournament>
        <name>c</name>
    </tournament>

</tournaments>

ad then I have one tournament in b.xml

<tournament>
    <name>d</name>
</tournament>

How I can apend document b.xml to a.xml into as another tournament ?

so this is what I want:

<tournaments>

    <tournament>
        <name>a</name>
    </tournament>

    <tournament>
        <name>b</name>
    </tournament>

    <tournament>
        <name>c</name>
    </tournament>

    <tournament>
        <name>d</name>
    </tournament>

</tournaments>

Which xml parser are you using?

janoliver
– janoliver

2011-11-01 09:11:01 +00:00
Commented Nov 1, 2011 at 9:11 — janoliver
– janoliver, Commented Nov 1, 2011 at 9:11

svaor · Accepted Answer · 2011-11-01 11:32:44Z

7

Get Node to add from first Document;
Adopt Node (see Document.adopt(Node)) from first Document to the second Document;
Appent adopted Node as a child to second Document structure (see Node.appendChild(Node).

Update. Code:

DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = documentBuilderFactory.newDocumentBuilder();

Document tournament = builder.parse(new File("b.xml"));
Document tournaments = builder.parse(new File("a.xml"));

Node tournamentElement = tournament.getFirstChild();
Node ndetournament = tournaments.getDocumentElement();
Node firstDocImportedNode = tournaments.adoptNode(tournamentElement);
ndetournament.appendChild(firstDocImportedNode);

TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.transform(new DOMSource(tournaments), new StreamResult(System.out));

Result:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<tournaments>
    <tournament>
        <name>a</name>
    </tournament>

    <tournament>
        <name>b</name>
    </tournament>

    <tournament>
        <name>c</name>
    </tournament>
<tournament>
    <name>d</name>
</tournament>
</tournaments>

edited Nov 1, 2011 at 11:32

answered Nov 1, 2011 at 9:40

svaor

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2 Comments

hudi Over a year ago

I try this but with no succces: Document tournament = builder.parse(new File("b.xml")); Document tournaments = builder.parse(new File("a.xml")); Element tournamentElement = (Element) tournament.getFirstChild(); Element ndetournament = (Element) tournaments.getElementsByTagName("turnaje").item(0); Node firstDocImportedNode = tournaments.adoptNode(tournamentElement); ndetournament.appendChild(firstDocImportedNode);

hudi Over a year ago

ok thx this work. I didnt have to write changed xml to file With transformerFactory now it is OK

GrahamA · Accepted Answer · 2011-11-01 10:05:36Z

0

Will this work for you?

import java.io.StringBufferInputStream;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;

public class Tournament {

  private static final String tournamentData =
    "  <tournaments>" +
    "    <tournament>" +
    "        <name>a</name>" +
    "    </tournament>" +
    "    <tournament>" +
    "        <name>b</name>" +
    "    </tournament>" +
    "    <tournament>" +
    "        <name>c</name>" +
    "    </tournament>" +
    "</tournaments>";


  private static final String tournamentB =
    "    <tournament>" +
    "        <name>d</name>" +
    "    </tournament>";

  private static DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();

  public static void main(String[] args) {
    try {
      Document currentTournaments = getCurrentTournaments();
      Element tournament =  getNewTournament();
      Element ndetournament = (Element) currentTournaments.getElementsByTagName("tournaments").item(0);
      Node firstDocImportedNode = currentTournaments.importNode(tournament, true);
      ndetournament.appendChild(firstDocImportedNode);
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

  private static Document getCurrentTournaments() throws Exception{
    DocumentBuilder builder = dbFactory.newDocumentBuilder();
    Document docTournament = builder.parse(new StringBufferInputStream(tournamentData));
    return docTournament;
  }

  private static Element getNewTournament() throws Exception{
    DocumentBuilder builder = dbFactory.newDocumentBuilder();
    Document newTournament = builder.parse(new StringBufferInputStream(tournamentData));
    Element tournament = newTournament.getDocumentElement();
    return tournament;
  }
}

You can ammend the getXXXX() functons suite your own code

answered Nov 1, 2011 at 10:05

GrahamA

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2 Comments

hudi Over a year ago

nope I try this but with no success: Document tournament = builder.parse(new File("b.xml")); Document tournaments = builder.parse(new File("a.xml")); Element tournamentElement = (Element) tournament.getFirstChild(); Element ndetournament = (Element) tournaments.getElementsByTagName("turnaje").item(0); Node firstDocImportedNode = tournaments.importNode(tournamentElement,true); ndetournament.appendChild(firstDocImportedNode);

GrahamA Over a year ago

Where is "b.xml" I've retested using new File("c:\\a.xml") and it seems to work.

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