Insert XML String into XML file at a certain position

Question

Hello,
I have this xml string:
<jdbc-driver-params>
<url>jdbc:oracle:thin:@localhost:1521:mydb</url>
<driver-name>oracle.jdbc.OracleDriver</driver-name>
<properties>
<property>
<name>user</name>
<value>myuser</value>
</property>
</properties>
<password-encrypted>myuser</password-encrypted>
</jdbc-driver-params>and i need to insert it into an xml file at a certain position (as child for a node)
The xml file looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<jdbc-data-source xmlns="http://www.bea.com/ns/weblogic/90"
    xmlns:sec="http://www.bea.com/ns/weblogic/90/security"
    xmlns:wls="http://www.bea.com/ns/weblogic/90/security/wls"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.bea.com/ns/weblogic/920 http://www.bea.com/ns/weblogic/920.xsd">
    <name>myDB</name>
    <jdbc-data-source-params>
        <global-transactions-protocol>OnePhaseCommit</global-transactions-protocol>
    </jdbc-data-source-params>
</jdbc-data-source>And this is how I would like to get it in the end:
<?xml version='1.0' encoding='UTF-8'?>
<jdbc-data-source xmlns="http://www.bea.com/ns/weblogic/90" xmlns:sec="http://www.bea.com/ns/weblogic/90/security" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:wls="http://www.bea.com/ns/weblogic/90/security/wls" xsi:schemaLocation="http://www.bea.com/ns/weblogic/920 http://www.bea.com/ns/weblogic/920.xsd">
  <name>mydb</name>
  <jdbc-driver-params>
    <url>jdbc:oracle:thin:@localhost:1521:myDB</url>
    <driver-name>oracle.jdbc.OracleDriver</driver-name>
    <properties>
      <property>
        <name>user</name>
        <value>myuser</value>
      </property>
    </properties>
    <password-encrypted>myuser</password-encrypted>
  </jdbc-driver-params>
  <jdbc-connection-pool-params>
    <test-table-name>SQL SELECT 1 FROM DUAL</test-table-name>
  </jdbc-connection-pool-params>
  <jdbc-data-source-params>
    <global-transactions-protocol>OnePhaseCommit</global-transactions-protocol>
  </jdbc-data-source-params>
</jdbc-data-source>So, I obtain the node for the given xml string, the jdbc-data-source node from the xml file and i attempt the appendChild. The problem is that nothing really gets inserted into the xml file.
Someone, any idea?
My code:
try
               DOMParser parser = new DOMParser();
               parser.parse(xmlFileName);
               Document doc = parser.getDocument(); // the document we will insert node into
               Node root = doc.getElementsByTagName("jdbc-data-source").item(0);
               //get XML string node
               DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
               DocumentBuilder db = factory.newDocumentBuilder();
               InputSource inStream = new InputSource();
               inStream.setCharacterStream(new StringReader(xmlString));
               Document doc4XMLString = db.parse(inStream);
               Node rootXMLString = doc4XMLString.getElementsByTagName("jdbc-driver-params").item(0);
               root.appendChild(doc.importNode(rootXMLString, true));
               return true;
          catch (Exception e)
               e.printStackTrace();
          }Thanks,
johnny
Edited by: smeag0l on Aug 6, 2008 5:08 PM
Edited by: smeag0l on Aug 6, 2008 5:43 PM

Answer 1

Well, you helped me again :-) Thank you very much!
Here is how the code should look:
                        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
               DocumentBuilder db4XMLFile = factory.newDocumentBuilder();
               Document doc4XMLFile = db4XMLFile.parse(xmlFileName);
               Node root4XMLFile = doc4XMLFile.getElementsByTagName(rootNodeName).item(0);
               DocumentBuilder db4XMLString = factory.newDocumentBuilder();
               InputSource inStream = new InputSource();
               inStream.setCharacterStream(new StringReader(xmlString));
               Document doc4XMLString = db4XMLString.parse(inStream);
               Node root4XMLString = doc4XMLString.getElementsByTagName(xmlStringNodeName).item(0);
               root4XMLFile.appendChild(doc4XMLFile.importNode(root4XMLString, true));
               File file = new File(xmlFileName);
                        Result result = new StreamResult(file.toURI().getPath());
               Source source = new DOMSource(doc4XMLFile);
               Transformer xformer = TransformerFactory.newInstance().newTransformer();
                  xformer.transform(source, result);