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Arun N S
Erron while
0 Answer(s)      3 years and 10 months ago
Posted in : Development process


Hi, i'm doing a project regarding xml. I want to extract all nodes from body of existing xml doc to make another xml with that data.Here is my coding and error showing on that coding.Could anybody help to know my error? coding:

public class Test {
        public static void main(String[] args) throws Exception {
            String xml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><html> <body> <h1 align=\"center\">Profile</h1><hr /> <div class=\"centered\"> <table><tr><td><strong>Name: </strong></td> <td>A</td> </tr> <tr> <td><strong>Age: </strong></td> <td>23</td> <td>programmer</td></tr><tr><td><strong>Email: </strong></td><td>adfg@gmail.com</td></tr></table></div><hr /></body></html>";
            SAXBuilder builder = new SAXBuilder();
            Document doc = builder.build(new StringReader(xml));
            listChildren(doc.getRootElement(), 0);
        }
            //root=existing document's root element
           //body=new documents body    
        private static void listChildren(Element root, int depth) {
            System.out.println(root.getName());
            List<Element> children = root.getChildren();
            if (children == null || children.isEmpty())
                    return;
            for (Element child : children) {
                     System.out.println(child.toString());
                     body.addContent(child);
                     listChildren(child, depth+1);
            }

            return;
        }
    }

error shown:

html
1
[Element: <body/>]
org.jdom.IllegalAddException: The Content already has an existing parent "html"
    at org.jdom.ContentList.add(ContentList.java:209)
    at org.jdom.ContentList.add(ContentList.java:131)
    at java.util.AbstractList.add(Unknown Source)
    at org.jdom.Element.addContent(Element.java:811)
    at Test.listChildren(Test.java:86)
    at Test.main(Test.java:53)

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