update Xml : Xml « Development « Android

1. Android
2. Development
3. Xml

update Xml

     
//package it.tava.andbudget.data.parser;

import java.io.File;
import java.io.IOException;
import java.io.StringWriter;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;
import org.xml.sax.SAXException;
import org.xmlpull.v1.XmlSerializer;

import android.util.Log;
import android.util.Xml;

public class XmlParser {

  private final static String TAG = "it.tava.andbudget.xml.XmlParser";

  private static final String JAXP = "http://java.sun.com/xml/jaxp/properties/";
  private static final String JAXP_SCHEMA_LANGUAGE = JAXP + "schemaLanguage";
  private static final String JAXP_SCHEMA_SOURCE = JAXP + "schemaSource";
  private static final String W3C_XML_SCHEMA = "http://www.w3.org/2001/XMLSchema"; 


  /**
   * Compila il file XML che viene passato come parametro e restituisce il Document DOM
   * associato, null altrimenti.
   * 
   * @param xml il file XML di cui effettuare il parsing
   * @param xsd il file XSD schema associato all'XML in input
   * @param validation se effettuare o meno la validazione del file ottenuto
   * @return il Document DOM associato al file in ingresso o null altrimenti
   */
  public static Document compileXml(File xml, File xsd, boolean validation) {
    Document document = null;

    try {
      DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

      factory.setValidating(validation);
      factory.setNamespaceAware(true);

      factory.setAttribute(JAXP_SCHEMA_LANGUAGE, W3C_XML_SCHEMA);
      factory.setAttribute(JAXP_SCHEMA_SOURCE, xsd);

      DocumentBuilder builder = factory.newDocumentBuilder();
      document = builder.parse(xml);

    } catch (SAXException se) {
      Log.e(TAG, "Error: compilation failed");
    } catch (IOException ioe) {
      Log.e(TAG, "Error: IOException");
    } catch (ParserConfigurationException e) {
      Log.e(TAG, "Error: ParserConfigurationException");
    }

    return document;
  }

  public static void updateXml(File xml, File xsd, Document document) {
    XmlSerializer serializer = Xml.newSerializer();
    StringWriter writer = new StringWriter();

    try {
      //Writer w = new FileWriter(new File("prova.xml"));

      serializer.setOutput(writer);

      serializer.startDocument("UTF-8", true);
      serializer.startTag("", "budget");
      serializer.endTag("", "budget");

      serializer.endDocument();
      
      System.out.println(writer.toString());

    } catch (IllegalArgumentException e) {
      e.printStackTrace();
    } catch (IllegalStateException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

}

   
    
    
    
    
  

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