Question

I have the following XML code:

<CampaignFrameResponse
  xmlns="http://Qsurv/api"
  xmlns:i="http://www.w3.org/2001/XMLSchema-instance">
  <Message>Success</Message>
  <Status>Success</Status>
  <FrameHeight>308</FrameHeight>   
  <FrameUrl>http://delivery.usurv.com?Key=a5018c85-222a-4444-a0ca-b85c42f3757d&amp;ReturnUrl=http%3a%2f%2flocalhost%3a8080%2feveningstar%2fhome</FrameUrl> 
</CampaignFrameResponse>

What I’m trying to do is extract the nodes and assign them to a variable. So for example, I’d have a variable called FrameHeight containing the value 308.

This is the Java code I have so far:

private void processNode(Node node) {
    NodeList nodeList = node.getChildNodes();
    for (int i = 0; i < nodeList.getLength(); i++) {
        Node currentNode = nodeList.item(i);
       if (currentNode.getNodeType() == Node.ELEMENT_NODE) {
            //calls this method for all the children which is Element
            LOG.warning("current node name: " + currentNode.getNodeName());
            LOG.warning("current node type: " + currentNode.getNodeType());
            LOG.warning("current node value: " + currentNode.getNodeValue());
            processNode(currentNode);
       }
    }

}

This prints out the node names, types and values, but what is the best way of assigning each of the values to an appropriately-named variable? eg int FrameHeight = 308?

This is my updated code where the nodeValue variable keeps returning null:

processNode(Node node) {
NodeList nodeList = node.getChildNodes();
for (int i = 0; i < nodeList.getLength(); i++) {
    Node currentNode = nodeList.item(i);
    if (currentNode.getNodeType() == Node.ELEMENT_NODE) {
        //calls this method for all the children which is Element
        String nodeName = currentNode.getNodeName();
        String nodeValue = currentNode.getNodeValue();
        if(nodeName.equals("Message")) {
            LOG.warning("nodeName: " + nodeName); 
            message = nodeValue;
            LOG.warning("Message: " + message); 
        } 
        else if(nodeName.equals("FrameHeight")) {
            LOG.warning("nodeName: " + nodeName); 
            frameHeight = nodeValue;
            LOG.warning("frameHeight: " + frameHeight);
        }
        processNode(currentNode);
    }
}

}

Answer 1

Xstream wont support in your case, it can be used for convert object to xml then get back again. If your xml is generated from an instance of CampaignFrameResponse class, u can use xstream.

Otherwise you simply check like

String nodeName = currentNode.getNodeName()
String nodeValue = currentNode.getNodeValue() ;
if( nodeName.equals("Message")){
     message = nodeValue ;
} else if( nodeName.equals("FrameHeight") {
     frameHeight = nodeValue ;
}

You need to parse if you need int value.