Java 插入xml:space=';保存';在DOM中
Java,Xerces 2.9.1Java 插入xml:space=';保存';在DOM中,java,xml,dom,Java,Xml,Dom,Java,Xerces 2.9.1 insertHere.setAttributeNS(XMLConstants.XML_NS_URI, "xml:space", "preserve"); 及 这两个属性的结尾都是space='preserve',没有XML前缀 insertHere.setAttribute( "xml:space", "preserve") 虽然有效,但似乎有点错误。我遗漏了什么吗 编辑 我查过了 我在打开setNamespaceAware的情况下读取了中的模板文档 然后
insertHere.setAttributeNS(XMLConstants.XML_NS_URI, "xml:space", "preserve");
及
这两个属性的结尾都是space='preserve'
,没有XML前缀
insertHere.setAttribute( "xml:space", "preserve")
虽然有效,但似乎有点错误。我遗漏了什么吗
编辑
我查过了
我在打开setNamespaceAware的情况下读取了中的模板文档
然后,我使用下面的代码复制它,然后开始插入新元素
public static Document copyDocument(Document input) {
DocumentType oldDocType = input.getDoctype();
DocumentType newDocType = null;
Document newDoc;
String oldNamespaceUri = input.getDocumentElement().getNamespaceURI();
if (oldDocType != null) {
// cloning doctypes is 'implementation dependent'
String oldDocTypeName = oldDocType.getName();
newDocType = input.getImplementation().createDocumentType(oldDocTypeName,
oldDocType.getPublicId(),
oldDocType.getSystemId());
newDoc = input.getImplementation().createDocument(oldNamespaceUri, oldDocTypeName,
newDocType);
} else {
newDoc = input.getImplementation().createDocument(oldNamespaceUri,
input.getDocumentElement().getNodeName(),
null);
}
Element newDocElement = (Element)newDoc.importNode(input.getDocumentElement(), true);
newDoc.replaceChild(newDocElement, newDoc.getDocumentElement());
return newDoc;
}
当我运行以下代码时:
import javax.xml.XMLConstants;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
public class Demo {
public static void main(String[] args) throws Exception {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
DocumentBuilder db = dbf.newDocumentBuilder();
Document document = db.newDocument();
Element rootElement = document.createElement("root");
document.appendChild(rootElement);
rootElement.setAttributeNS(XMLConstants.XML_NS_URI, "space", "preserve");
TransformerFactory tf = TransformerFactory.newInstance();
Transformer t = tf.newTransformer();
t.transform(new DOMSource(document), new StreamResult(System.out));
}
}
我得到以下输出:
<root xml:space="preserve"/>
您是如何构建文档的?当我运行以下代码时:
import javax.xml.XMLConstants;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
public class Demo {
public static void main(String[] args) throws Exception {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
DocumentBuilder db = dbf.newDocumentBuilder();
Document document = db.newDocument();
Element rootElement = document.createElement("root");
document.appendChild(rootElement);
rootElement.setAttributeNS(XMLConstants.XML_NS_URI, "space", "preserve");
TransformerFactory tf = TransformerFactory.newInstance();
Transformer t = tf.newTransformer();
t.transform(new DOMSource(document), new StreamResult(System.out));
}
}
我得到以下输出:
<root xml:space="preserve"/>
您是如何构建文档的?不知何故,我怀疑我忘记了“setNamespaceAware”。不知何故,我怀疑我忘记了“setNamespaceAware”。