DOM serializer : DOM Node « XML « Java

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Java » XML » DOM NodeScreenshots 
DOM serializer
         

import java.io.IOException;
import java.io.Writer;

import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class MainClass {
  static private String indent = "";
  public static Writer writer;
  public static void serialize(Document doc) throws IOException {
    serializeNode(doc, "");
    writer.flush();
  }

  private static void serializeNode(Node node, String indentLevel) throws IOException {
    switch (node.getNodeType()) {
    case Node.DOCUMENT_NODE:
      Document doc = (Document) node;
      writer.write("<?xml version=\"");
      writer.write(doc.getXmlVersion());
      writer.write("\" encoding=\"UTF-8\" standalone=\"");
      if (doc.getXmlStandalone())
        writer.write("yes");
      else
        writer.write("no");
      writer.write("\"?>\n");

      NodeList nodes = node.getChildNodes();
      if (nodes != null)
        for (int i = 0; i < nodes.getLength(); i++)
          serializeNode(nodes.item(i), "");
      break;
    case Node.ELEMENT_NODE:
      String name = node.getNodeName();
      writer.write(indentLevel + "<" + name);
      NamedNodeMap attributes = node.getAttributes();
      for (int i = 0; i < attributes.getLength(); i++) {
        Node current = attributes.item(i);
        writer.write(" " + current.getNodeName() + "=\"");
        print(current.getNodeValue());
        writer.write("\"");
      }
      writer.write(">");

      NodeList children = node.getChildNodes();
      if (children != null) {
        if ((children.item(0) != null) && (children.item(0).getNodeType() == Node.ELEMENT_NODE))
          writer.write("\n");

        for (int i = 0; i < children.getLength(); i++)
          serializeNode(children.item(i), indentLevel + indent);

        if ((children.item(0) != null)
            && (children.item(children.getLength() - 1).getNodeType() == Node.ELEMENT_NODE))
          writer.write(indentLevel);
      }

      writer.write("</" + name + ">\n");
      break;
    case Node.TEXT_NODE:
      print(node.getNodeValue());
      break;
    case Node.CDATA_SECTION_NODE:
      writer.write("CDATA");
      print(node.getNodeValue());
      writer.write("");
      break;
    case Node.COMMENT_NODE:
      writer.write(indentLevel + "<!-- " + node.getNodeValue() + " -->\n");
      break;
    case Node.PROCESSING_INSTRUCTION_NODE:
      writer.write("<?" + node.getNodeName() + " " + node.getNodeValue() + "?>\n");
      break;
    case Node.ENTITY_REFERENCE_NODE:
      writer.write("&" + node.getNodeName() + ";");
      break;
    case Node.DOCUMENT_TYPE_NODE:
      DocumentType docType = (DocumentType) node;
      String publicId = docType.getPublicId();
      String systemId = docType.getSystemId();
      String internalSubset = docType.getInternalSubset();
      writer.write("<!DOCTYPE " + docType.getName());
      if (publicId != null)
        writer.write(" PUBLIC \"" + publicId + "\" ");
      else
        writer.write(" SYSTEM ");
      writer.write("\"" + systemId + "\"");
      if (internalSubset != null)
        writer.write(" [" + internalSubset + "]");
      writer.write(">\n");
      break;
    }
  }

  private static void print(String s) throws IOException {
    if (s == null)
      return;
    for (int i = 0, len = s.length(); i < len; i++) {
      char c = s.charAt(i);
      switch (c) {
      case '<':
        writer.write("&lt;");
        break;
      case '>':
        writer.write("&gt;");
        break;
      case '&':
        writer.write("&amp;");
        break;
      case '\r':
        writer.write("&#xD;");
        break;
      default:
        writer.write(c);
      }
    }
  }

}

   
    
    
    
    
    
    
    
  
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20.Getting a DOM Element by Id
21.Determining If an Attribute Was Supplied in a DOM Element
22.Add a text node to the element
23.Add a text node to the beginning of the element
24.Add a text node before the last child of the element
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30.Get the W3C Node instance associated with the XPath selection supplied
31.Convert Hashtable to a Node
32.Convert NodeList To Node Array
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34.Returns a Properties object matching the given node
35.Returns a list of value for the given node
36.Returns the value of the attribute of the given element
37.Returns the value of the child node with the given name
38.Returns the value of the given node
39.Simplified implementation of a Node from a Document Object Model (DOM)
40.Extract all text children of an element
41.Extract the textual content from a Node.
42.Returns a first child DOM Node of type ELEMENT_NODE for the specified Node
43.Remove this node from its parent.
44.Find Node
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