如何在 Java 中为 XML 节点创建属性 (xmlns:xsd)? [英] How to create attribute (xmlns:xsd) to XML node in Java?

问题描述

我目前正在用 Java 创建一个 XML 文档.该文档应具有以下结构:

I am currently creating an XML document in Java. The document should have the following structure:

<?xml version="1.0" ?> 
<Cancelacion xmlns:xsd="http://www.w3.org/2001/XMLSchema"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             RfcEmisor="VSI850514HX4" 
             Fecha="2011-11-23T17:25:06" 
             xmlns="http://cancelacfd.sat.gob.mx">
    <Folios>
        <UUID>BD6CA3B1-E565-4985-88A9-694A6DD48448</UUID> 
    </Folios>
</Cancelacion>

我想知道是否有一种特殊的方法可以创建格式为 xmlns:xsd 的属性?我目前正在像这样声明这个属性:

I want to know if there is a special way to create the attributes with form xmlns:xsd? I am currently declaring this attribute like this:

DocumentBuilderFactory dbfac = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder;
docBuilder = dbfac.newDocumentBuilder();
Document doc = docBuilder.newDocument();
doc.setXmlVersion("1.0");
doc.setXmlStandalone(true);

Element cancelacion = doc.createElement("Cancelacion");
cancelacion.setAttribute("xmlns", "http://cancelacfd.sat.gob.mx");
cancelacion.setAttribute("xmlns:xsd", "http://www.w3.org/2001/XMLSchema");
cancelacion.setAttribute("xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance");
cancelacion.setAttribute("RfcEmisor", rfc);
cancelacion.setAttribute("Fecha", fecha);

推荐答案

我的问题的解决方法是写代码如下:

The solution my problem is to write the code as follows:

//Crear un document XML vacío
DocumentBuilderFactory dbfac = DocumentBuilderFactory.newInstance();
dbfac.setNamespaceAware(true);
DocumentBuilder docBuilder;
docBuilder = dbfac.newDocumentBuilder();
DOMImplementation domImpl = docBuilder.getDOMImplementation();
Document doc = domImpl.createDocument("http://cancelacfd.sat.gob.mx", "Cancelacion", null);
doc.setXmlVersion("1.0");
doc.setXmlStandalone(true);

Element cancelacion = doc.getDocumentElement();
cancelacion.setAttributeNS("http://www.w3.org/2000/xmlns/","xmlns:xsd","http://www.w3.org/2001/XMLSchema");
cancelacion.setAttributeNS("http://www.w3.org/2000/xmlns/","xmlns:xsi","http://www.w3.org/2001/XMLSchema-instance");
cancelacion.setAttribute("RfcEmisor", rfc);
cancelacion.setAttribute("Fecha", fecha);

Element folios = doc.createElement("Folios");
cancelacion.appendChild(folios);
for (int i=0; i<uuid.length; i++) {
    Element u = doc.createElement("UUID");
    u.setTextContent(uuid[i]);
    folios.appendChild(u);
}

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