thoerup/side9/Side9Xml.java

package dk.thoerup.side9;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;

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

import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;


public class Side9Xml {
        
        static final int WIDTH = 100;
        static final String BASEURL = "http://apps.todic.net/side9/"; 

        public static Document parseXML(String str) throws SAXException, IOException, ParserConfigurationException
        {
                DocumentBuilder builder =  DocumentBuilderFactory.newInstance().newDocumentBuilder();
                return  builder.parse( new ByteArrayInputStream(str.getBytes()) );              
        }
        
        
        public static byte[] getContent(String uri) throws IOException {
                byte buffer[] = new byte[256];
                
                ByteArrayOutputStream baos = new ByteArrayOutputStream(32768); //start buffer size - instead of default 32bytes
                
                URL url = new URL(uri);
                URLConnection connection = url.openConnection();
                InputStream is = connection.getInputStream();
                
                try {
                        int count;
                        while ( (count = is.read(buffer)) != -1) {
                                baos.write(buffer, 0, count);
                        }
                } finally {
                        try {
                                is.close();
                                baos.close();
                        } catch (Exception e) {} //never mind if close throws an exception
                }
                                
                return baos.toByteArray();
        }
        
        public Side9Data loadXml() throws IOException, ParserConfigurationException, SAXException{
                String dataURL = BASEURL + "xml.php?width=" + WIDTH;
                
                byte data[] = getContent( dataURL );
                String xmlData = new String(data, "UTF-8");
                Document doc = parseXML(xmlData);               
                
                Node rootNode = doc.getDocumentElement(); // stations
                NodeList nodes = rootNode.getChildNodes();
                
                Side9Data side9Data = new Side9Data();
                
                for (int i=0; i<nodes.getLength(); i++) {
                        Node currentNode = nodes.item(i);
                        
                        String name = currentNode.getNodeName();
                        String content = null;
                        
                        if (currentNode.getFirstChild() != null)
                                content = currentNode.getFirstChild().getNodeValue(); //get the textNode - then get the text node's value

                        
                        if (name.equals("imageurl")) 
                                side9Data.url = BASEURL + content;
                        if (name.equals("width"))
                                side9Data.width = Integer.parseInt(content);                    
                        if (name.equals("height"))
                                side9Data.height = Integer.parseInt(content);
                        if (name.equals("caption"))
                                side9Data.caption = content;
                }
                                
                
                return side9Data;
        }
        
}
 
1	package dk.thoerup.side9;
2
3	import java.io.ByteArrayInputStream;
4	import java.io.ByteArrayOutputStream;
5	import java.io.IOException;
6	import java.io.InputStream;
7	import java.net.URL;
8	import java.net.URLConnection;
9
10	import javax.xml.parsers.DocumentBuilder;
11	import javax.xml.parsers.DocumentBuilderFactory;
12	import javax.xml.parsers.ParserConfigurationException;
13
14	import org.w3c.dom.Document;
15	import org.w3c.dom.Node;
16	import org.w3c.dom.NodeList;
17	import org.xml.sax.SAXException;
18
19
20
21	public class Side9Xml {
22
23	static final int WIDTH = 100;
24	static final String BASEURL = "http://apps.todic.net/side9/";
25
26	public static Document parseXML(String str) throws SAXException, IOException, ParserConfigurationException
27	{
28	DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
29	return builder.parse( new ByteArrayInputStream(str.getBytes()) );
30	}
31
32
33	public static byte[] getContent(String uri) throws IOException {
34	byte buffer[] = new byte[256];
35
36	ByteArrayOutputStream baos = new ByteArrayOutputStream(32768); //start buffer size - instead of default 32bytes
37
38	URL url = new URL(uri);
39	URLConnection connection = url.openConnection();
40	InputStream is = connection.getInputStream();
41
42	try {
43	int count;
44	while ( (count = is.read(buffer)) != -1) {
45	baos.write(buffer, 0, count);
46	}
47	} finally {
48	try {
49	is.close();
50	baos.close();
51	} catch (Exception e) {} //never mind if close throws an exception
52	}
53
54	return baos.toByteArray();
55	}
56
57	public Side9Data loadXml() throws IOException, ParserConfigurationException, SAXException{
58	String dataURL = BASEURL + "xml.php?width=" + WIDTH;
59
60	byte data[] = getContent( dataURL );
61	String xmlData = new String(data, "UTF-8");
62	Document doc = parseXML(xmlData);
63
64	Node rootNode = doc.getDocumentElement(); // stations
65	NodeList nodes = rootNode.getChildNodes();
66
67	Side9Data side9Data = new Side9Data();
68
69	for (int i=0; i<nodes.getLength(); i++) {
70	Node currentNode = nodes.item(i);
71
72	String name = currentNode.getNodeName();
73	String content = null;
74
75	if (currentNode.getFirstChild() != null)
76	content = currentNode.getFirstChild().getNodeValue(); //get the textNode - then get the text node's value
77
78
79	if (name.equals("imageurl"))
80	side9Data.url = BASEURL + content;
81	if (name.equals("width"))
82	side9Data.width = Integer.parseInt(content);
83	if (name.equals("height"))
84	side9Data.height = Integer.parseInt(content);
85	if (name.equals("caption"))
86	side9Data.caption = content;
87	}
88
89
90
91
92	return side9Data;
93	}
94
95	}
96