Question

I am trying to produce a XML document using the newest JDOM package. I’m having trouble with the root element and the namespaces. I need to produce this root element:

<ManageBuildingsRequest 
    xmlns="http://www.energystar.gov/manageBldgs/req" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://www.energystar.gov/manageBldgs/req 
                        http://estar8.energystar.gov/ESES/ABS20/Schemas/ManageBuildingsRequest.xsd">

I use this code:

Element root = new Element("ManageBuildingsRequest");
root.setNamespace(Namespace.getNamespace("http://www.energystar.gov/manageBldgs/req"));
Namespace XSI = Namespace.getNamespace("xsi", "http://www.w3.org/2001/XMLSchema-instance");
root.addNamespaceDeclaration(XSI);
root.setAttribute("schemaLocation", "http://www.energystar.gov/manageBldgs/req http://estar8.energystar.gov/ESES/ABS20/Schemas/ManageBuildingsRequest.xsd", XSI);

Element customer = new Element("customer");
root.addContent(customer);
doc.addContent(root); // doc jdom Document

However, the next element after ManageBuildingsRequest has the default namespace as well, which breaks the validation:

<customer xmlns="">

Any help? Thank you for your time.

Answer 1

The constructor you’re using for the customer element creates it with no namespace. You should use the constructor with the Namespace as parameter. You can also reuse the same Namespace object for both root and customer elements.

Namespace namespace = Namespace.getNamespace("http://www.energystar.gov/manageBldgs/req");
Element root = new Element("ManageBuildingsRequest", namespace);
Namespace XSI = Namespace.getNamespace("xsi", "http://www.w3.org/2001/XMLSchema-instance");
root.addNamespaceDeclaration(XSI);
root.setAttribute("schemaLocation", "http://www.energystar.gov/manageBldgs/req http://estar8.energystar.gov/ESES/ABS20/Schemas/ManageBuildingsRequest.xsd", XSI);

Element customer = new Element("customer", namespace);
root.addContent(customer);
doc.addContent(root); // doc jdom Document