我正在尝试在现有 XML 中添加元素。转换后我得到 xmlns=""在添加的元素中，我不需要它。
原始 XML:
<Message version='010' release='006'
xsi:schemaLocation='http://www.ncpdp.org/schema/SCRIPT SS_SCRIPT_XML_10_6MU.xsd'
xmlns='http://www.ncpdp.org/schema/SCRIPT'
xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
<Header> ... </Header>
<Body>
<New> ...
<Medication>
...
<StatusCode>NF</StatusCode>
<StatusCode>NR</StatusCode>
</Medication>
</New>
</Body>
</Message>
实际(不需要的)输出:
<Message version='010' release='006'
xsi:schemaLocation='http://www.ncpdp.org/schema/SCRIPT SS_SCRIPT_XML_10_6MU.xsd'
xmlns='http://www.ncpdp.org/schema/SCRIPT'
xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
<Header> ... </Header>
<Body>
<New> ...
<Medication>
...
<StatusCode>NF</StatusCode>
<StatusCode>NR</StatusCode>
<StatusCode xmlns="">SI</StatusCode>
</Medication>
</New>
</Body>
</Message>
预期输出:
<Message version='010' release='006'
xsi:schemaLocation='http://www.ncpdp.org/schema/SCRIPT SS_SCRIPT_XML_10_6MU.xsd'
xmlns='http://www.ncpdp.org/schema/SCRIPT'
xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
<Header> ... </Header>
<Body>
<New> ...
<Medication>
...
<StatusCode>NF</StatusCode>
<StatusCode>NR</StatusCode>
<StatusCode>SI</StatusCode>
</Medication>
</New>
</Body>
</Message>
我不想要xmlns=""在添加的元素 <StatusCode>SI</StatusCode> 中.
Java 代码:
private DocumentBuilderFactory getDocumentBuilderFactory() {
if (factory == null) {
factory = DocumentBuilderFactory.newInstance();
factory.setIgnoringElementContentWhitespace(true);
factory.setNamespaceAware(true);
}
return factory;
}
public void addSIElement() throws ParserConfigurationException, SAXException, IOException, TransformerException {
Transformer transformer = null;
Document doc = getDocumentBuilderFactory().newDocumentBuilder().parse(new InputSource(new StringReader(xmlMsg)));
Node list = doc.getElementsByTagName("Medication").item(0);
Element el = doc.createElement("StatusCode");
el.setTextContent("SI");
list.appendChild(el);
Source source = new DOMSource(doc);
StringWriter writer = new StringWriter();
Result newResult = new StreamResult(writer);
if (transformer == null) {
transformer = TransformerFactory.newInstance().newTransformer();
}
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.transform(source, newResult);
String outStr = writer.toString();
System.out.println("Final " + outStr);
}
最佳答案
您正在无命名空间中创建一个新元素，但原始 XML 中的所有元素都属于 http://www.ncpdp.org/schema/SCRIPT命名空间。为了正确添加元素，解析器添加 xmlns=""属性，因此该元素被声明为属于无命名空间。
要解决此问题，请使用 org.w3c.dom.Document.createElementNS 创建元素提供原始文件的 namespace :
Element el = doc.createElementNS("http://www.ncpdp.org/schema/SCRIPT", "StatusCode");
关于java - 避免将 XML 命名空间添加到输出消息，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/23488737/