CODEWITHSUNDEEP
javaxml
user1508419
user1508419

Reputation: 333

exception in creating xml file using xml outputter

here is my simple code:

try
                {
                    Element performances = new Element("performances");
                    Document doc = new Document(performances);
                    doc.setRootElement(performances);

                    performances.setAttribute(new Attribute("date", dateFormat.format(cal.getTime())));

                    Element uptime = new Element("uptime");
                    uptime.addContent(new Element("days").setText(new Long(duptime).toString()));
                    uptime.addContent(new Element("hours").setText(new Long(huptime).toString()));
                    uptime.addContent(new Element("minutes").setText(new Long(muptime).toString()));
                    uptime.addContent(new Element("seconds").setText(new Long(suptime).toString()));

                    doc.getRootElement().addContent(uptime);

                    XMLOutputter xmlOutput = new XMLOutputter();

                    xmlOutput.setFormat(Format.getPrettyFormat());
                    xmlOutput.output(doc, new FileWriter("/homa/mazzy/Scrivania/perfor_"+dateFormat.format(cal.getTime())+"xml"));

I got this exception 

Exception in thread "AWT-EventQueue-0" org.jdom2.IllegalAddException: The element "performances" could not be added as the root of the document: The Content already has an existing parent document

but I don't know what does it means.where is the mistake?

Upvotes: 1

Views: 905

Answers (1)

user647772
user647772

Reputation:

These two lines

Document doc = new Document(performances);
doc.setRootElement(performances);

cause the error. The first sets the root, the second dies it again.

Edit

Do

Document doc = new Document()
doc.setRootElement(performances)

or

Document doc = new Document(performances)

Upvotes: 1

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