JAXB上下文重命名名称空间并添加xml标头

Question

Using JAXBContext, I have a package to create a XML header but the namespace is not generating properly.I need to change the XML from the first one to the second one.

JAXBContext jaxbContext = JAXBContext
                        .newInstance("com.oracle.xmlns.eos.v2"); 
Marshaller marshaller = jaxbContext.createMarshaller();

From :

<?xml version="1.0" encoding="UTF-8"?>
    <ns1:DPC
        xmlns:ns2="http://xmlns.oracle.com/EnterpriseObjects/V2"
        xmlns:ns1="http://url/xsd/DPC"
        xmlns:wsa="http://schemas.xmlsoap.org/ws/2003/03/addressing"
        xmlns:ns0="http://xmlns.oracle.com/EnterpriseObjects/IC/V1"/>

To:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
        <ns1:DPC
            xmlns:ns1="http://url/xsd/DPC"
            xmlns:wsa="http://schemas.xmlsoap.org/ws/2003/03/addressing"
            xmlns:ns0="http://xmlns.oracle.com/EnterpriseObjects/IC/V1"
            xmlns:coreEB="http://xmlns.oracle.com/EnterpriseObjects/EB/V1"
            xmlns:cc="http://xmlns.oracle.com/EnterpriseObjects/V2"/>

Please suggest Is it possible to change the first to second.This needs to add xmlns:coreEB="http://xmlns.oracle.com/EnterpriseObjects/EB/V1" and rename the namespace from xmlns:ns2="http://xmlns.oracle.com/EnterpriseObjects/V2" to xmlns:cc="http://xmlns.oracle.com/EnterpriseObjects/V2" .

Answer 1

Both your variations are the same except that second has one more namespace http://xmlns.oracle.com/EnterpriseObjects/EB/V1

JAXB marshaller marshals namespaces from all known to its context classes or packages. Your examples means that from your package com.oracle.xmlns.eos.v2 there is no references to the package containing classes with JAXB annotations for http://xmlns.oracle.com/EnterpriseObjects/EB/V1 namespace

So,

first - double check your JAXB classes/packages structure, problem can be there.

second - if you did not find discrepancy or not sure about that... try to add needed package for http://xmlns.oracle.com/EnterpriseObjects /EB/V1 namespace explicitly to JAXBContext separated by : like

JAXBContext jaxbContext = JAXBContext
                    .newInstance("com.oracle.xmlns.eos.v2:com.oracle.xmlns.enterpriseobjects.eb.v1"); 

You will have needed namespace in generated XML. Perhaps you will not have any elements or attributes for that namespace, because JAXB did not find it is needed, but namespace will be there.

Just keep in mind a package must be a JAXB, either with jaxb ObjectFactory class or jaxb.index file.