Android Open Source - WearYouATT X M L Parser

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License

The source code is released under:

Copyright (c) 2014 Trebels Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software w...

Java Source Code

package com.wafflehaus.wearyouatt;
/* w w w .java 2s  .c o m*/
import java.io.IOException;
import java.io.StringReader;
import java.io.UnsupportedEncodingException;

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

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

import android.util.Log;

public class XMLParser {

  // constructor
  public XMLParser() {

  }

  /**
   * Getting XML from URL making HTTP request
   * 
   * @param url
   *            string
   * */
  public String getXmlFromUrl(String url) {
    String xml = null;

    try {
      // defaultHttpClient
      DefaultHttpClient httpClient = new DefaultHttpClient();
      HttpPost httpPost = new HttpPost(url);

      HttpResponse httpResponse = httpClient.execute(httpPost);
      HttpEntity httpEntity = httpResponse.getEntity();
      xml = EntityUtils.toString(httpEntity);

    } catch (UnsupportedEncodingException e) {
      e.printStackTrace();
    } catch (ClientProtocolException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
    // return XML
    return xml;
  }

  /**
   * Getting XML DOM element
   * 
   * @param XML
   *            string
   * */
  public Document getDomElement(String xml) {
    Document doc = null;
    DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    try {

      DocumentBuilder db = dbf.newDocumentBuilder();

      InputSource is = new InputSource();
      is.setCharacterStream(new StringReader(xml));
      doc = db.parse(is);

    } catch (ParserConfigurationException e) {
      Log.e("Error: ", e.getMessage());
      return null;
    } catch (SAXException e) {
      Log.e("Error: ", e.getMessage());
      return null;
    } catch (IOException e) {
      Log.e("Error: ", e.getMessage());
      return null;
    }

    return doc;
  }

  /**
   * Getting node value
   * 
   * @param elem
   *            element
   */
  public final String getElementValue(Node elem) {
    Node child;
    if (elem != null) {
      if (elem.hasChildNodes()) {
        for (child = elem.getFirstChild(); child != null; child = child
            .getNextSibling()) {
          if (child.getNodeType() == Node.TEXT_NODE) {
            return child.getNodeValue();
          }
        }
      }
    }
    return "";
  }

  /**
   * Getting node value
   * 
   * @param Element
   *            node
   * @param key
   *            string
   * */
  public String getValue(Element item, String str) {
    NodeList n = item.getElementsByTagName(str);
    return this.getElementValue(n.item(0));
  }
}

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