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DomXmlSerializer.java - Serialize DOM to XML String
How to serialize a DOM object to an XML string?
✍: FYIcenter
If you want to serialize (or convert) a DOM object to an XML string, you can follow these suggestions:
1. Build your DOM document object with the DOM API:
DocumentBuilder b = f.newDocumentBuilder(); Document d = b.newDocument(); Element e = d.createElement("User"); d.appendChild(e); ...
2. Call the getDOMImplementation() method on the DocumentBuilder object to figure out DOM LS (Load and Save) impletation object. Then use it to create the LSSerializer object.
DOMImplementationLS ls = (DOMImplementationLS) b.getDOMImplementation(); LSSerializer s = ls.createLSSerializer(); System.out.println("DOMImplementationLS class:\n "+ls.getClass().getName()); System.out.println("LSSerializer class:\n "+s.getClass().getName());
3. Call writeToString() method on the LSSerializer object to convert DOM object to an XML string:
System.out.println("XML from LSSerializer:\n"+s.writeToString(d));
4. Call getDomConfig() method on the LSSerializer object to retrieve the DOMCongiguratin object. Then set various parameters to control the LSSerializer
System.out.println("XML from LSSerializer:\n"+s.writeToString(d)); DOMConfiguration p = s.getDomConfig(); p.setParameter("format-pretty-print",Boolean.TRUE); System.out.println("Pretty XML from LSSerializer:\n"+s.writeToString(d));
Here is a complete example of parsing an XML file with DOM API, DomXmlSerializer.java:
// Copyright (c) 2017 FYIcenter.com import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.DocumentBuilder; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.Text; import org.w3c.dom.Node; import org.w3c.dom.NodeList; import org.w3c.dom.DOMConfiguration; import org.w3c.dom.ls.DOMImplementationLS; import org.w3c.dom.ls.LSSerializer; public class DomXmlSerializer { public static void main(String[] args) throws Exception { DocumentBuilderFactory f = DocumentBuilderFactory.newInstance(); DocumentBuilder b = f.newDocumentBuilder(); Document d = b.newDocument(); Element e = d.createElement("User"); d.appendChild(e); Element c = d.createElement("ID"); c.appendChild(d.createTextNode("202")); e.appendChild(c); c = d.createElement("Name"); c.appendChild(d.createTextNode("Frank Y. Ivy")); e.appendChild(c); c = d.createElement("BirthDate"); c.appendChild(d.createTextNode("1970-01-01")); e.appendChild(c); DOMImplementationLS ls = (DOMImplementationLS) b.getDOMImplementation(); LSSerializer s = ls.createLSSerializer(); System.out.println("DOMImplementationLS class:\n "+ls.getClass().getName()); System.out.println("LSSerializer class:\n "+s.getClass().getName()); System.out.println("XML from LSSerializer:\n"+s.writeToString(d)); DOMConfiguration p = s.getDomConfig(); p.setParameter("format-pretty-print",Boolean.TRUE); System.out.println("Pretty XML from LSSerializer:\n"+s.writeToString(d)); } }
Compile and run the example program, DomXmlSerializer.java:
>\fyicenter\jdk-1.8.0\bin\javac DomXmlParserWhitespace.java >\fyicenter\jdk-1.8.0\bin\java DomXmlParserWhitespace UserDTD.xml false Implementation class: com.sun.org.apache.xerces.internal.dom.DeferredDocumentImpl DOM object elements and text contents: .User: ..#text:
⇒ DomXmlDtdValidation.java - DOM Parser with DTD Validation
⇐ DomXmlParserWhitespace.java - Parse XML File without Whitespaces
2017-12-13, 1743🔥, 0💬
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