如何使用JAXB（JDK 7）设置默认名称空间

Question

I've got problem with setting default namespace with JAXB. I have followed tips from here but problem still exist. Here is how looks like my package-info:

@XmlSchema(
        namespace = "my/xml/namespace",
        xmlns = {
                @XmlNs(namespaceURI="my/xml/namespace",prefix=""),
        },
        elementFormDefault = javax.xml.bind.annotation.XmlNsForm.QUALIFIED)
package my.xml.namespace;
import javax.xml.bind.annotation.XmlSchema;
import javax.xml.bind.annotation.XmlNs;
import javax.xml.XMLConstants;;

But still created xml looks like this:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns2:resp xmlns:ns2="my/xml/namespace">
....
</ns2:resp>

I would like to get rid of these prefix but run out of ideas. Anyone maybe know why?

UPDATE

I habe followed advice and implement NamespacePrefixMapper and:

1. It's crucial to be com.sun.xml.bind.marshaller.NamespacePrefixMapper. I've use another one and get wierd exceptions.

2. It does not work too - the same issue persist. Here is my mapper:

   NamespacePrefixMapper mapper = new NamespacePrefixMapper(){

     @Override public String getPreferredPrefix(String namespaceUri, String suggestion, boolean requirePrefix) { if("amc/xml/pay03_entryresponse".equals(namespaceUri)) { return ""; }else return suggestion; } }; marshaller.setProperty("com.sun.xml.bind.namespacePrefixMapper", mapper); 

Answer 1

You have to use a Namespace mapper.

There are some examples on the web:

• http://hwellmann.blogspot.co.at/2011/03/jaxb-marshalling-with-custom-namespace.html
• http://java.dzone.com/articles/jaxb-and-namespace-prefixes