Re: [xml-dev] How to get Node value In a DOM Tree

[Seetha Rama Krishna <ram_kurra@yahoo.co.in>]

Hi Chris,
        Thanks for u r reply.  I used   getNodeType() to get the Node Type . It is giving 1. i.e it Element  Node. 
      Then How can I retrieve the value of Element Node.
  
  regards,
  Ramu.
  

Chris Burdess <dog@bluezoo.org> wrote:
>   Seetha Rama Krishna wrote:
> > I am trying to create a DOM Tree. I had create Node's for the DOM  
> > Tree. I want to know how to set the Values to these Nodes.
> >
> > Element root = null;
> > DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
> > DocumentBuilder builder = factory.newDocumentBuilder();
> > Document document = builder.newDocument();
> > root = document.createElement(Root_Element);
> > document.appendChild(root);
> > Element applicationElement
>  =document.createElement 
> > (Application_Element);
> >            applicationElement.setNodeValue("krish");
> >   root.appendChild(applicationElement);
> >
> >
> > Now when I try to get the This Node Value , I am getting null  
> > Pointer Exception.
> > Here is my code of retrieving the node value
> >
> > NodeList applicationNodeList = null;
> >  applicationNodeList =finalElement.getElementsByTagName 
> > ("application");
> >  System.out.println("applicationNodeList  
> > size"+applicationNodeList.getLength());
> >
> >      for(int i = 0; i<= applicationNodeList.getLength();i++)
> >      {
> >          System.out.println("eachApplicaiton in the  
> > DOM"+applicationNodeList.item(i).getNodeValue());
> >
> >          }
> >
> >
> > I am getting NodeList size is 1 , but I the node Value I am getting  
> > as
>  Null.
>
> http://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-1950641247
>
> "In cases where there is no obvious mapping of these attributes for a  
> specific nodeType (e.g., nodeValue for an Element or attributes for a  
> Comment), this returns null."
>
> Probably you want a Text node. Read the DOM specification.
> -- 
> 犬 Chris Burdess
>    "They that can give up essential liberty to obtain a little safety
>    deserve neither liberty nor safety." - Benjamin Franklin

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