Java – JAXB generated XML – root element prefix problem

I'm trying to generate XML using JAXB I created XSD and generated Java classes

For example: I want a root tag

<report>
   <id>rep 1</id>
</report>

, but get

<ns2:report>
....
</ns2:report>

In the generated Java class, I annotated @ xmlrootelement (name = "report", namespace = "urn: report")

Some people can help

Solution

If this is your class:

package example;

import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement(name="report",namespace="urn:report")
public class Root {

    private String id;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

}

It makes sense to have a prefix on the root element, because you have specified that the "root" element is namespace qualified and the "Id" element is not

<ns2:report xmlns:ns2="urn:report">
    <id>123</id>
</ns2:report>

If you add a package info class to the model, you can use the @ XMLSchema annotation:

@XmlSchema(
        namespace = "urn:report",elementFormDefault = XmlNsForm.QUALIFIED)
package example;

import javax.xml.bind.annotation.XmlNsForm;
import javax.xml.bind.annotation.XmlSchema;

Then, the JAXB implementation can choose to use the default namespace, but now note that all elements are namespace qualified, and they may or may not match your XML Schema:

<report xmlns="urn:report">
    <id>123</id>
</report>

For more information about JAXB and namespaces, see:

> http://bdoughan.blogspot.com/2010/08/jaxb-namespaces.html