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1
55
56 package customfactory.service;
57
58 import org.w3c.dom.Document  ;
59 import org.w3c.dom.Element ;
60 import org.w3c.dom.NodeList ;
61
62 import javax.xml.parsers.DocumentBuilder ;
63 import javax.xml.parsers.DocumentBuilderFactory ;
64 import java.net.URL ;
65
66
71 public class StockQuoteService {
72 public float getQuote (String symbol) throws Exception {
73
77 if ( symbol.equals("XXX") ) return( (float) 55.25 );
78
79 URL url = new URL ( "http://services.xmethods.net/" +
80 "axis/getQuote?s="+symbol );
81
82 DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
83 DocumentBuilder db = dbf.newDocumentBuilder();
84
85 Document doc = db.parse( url.toExternalForm() );
86 Element elem = doc.getDocumentElement();
87 NodeList list = elem.getElementsByTagName( "stock_quote" );
88
89 if ( list != null && list.getLength() != 0 ) {
90 elem = (Element ) list.item(0);
91 list = elem.getElementsByTagName( "price" );
92 elem = (Element ) list.item(0);
93 String quoteStr = elem.getAttribute("value");
94 try {
95 return Float.valueOf(quoteStr).floatValue();
96 } catch (NumberFormatException e1) {
97 try {
99 return Integer.valueOf(quoteStr).intValue() * 1.0F;
100 } catch (NumberFormatException e2) {
101 return -1.0F;
102 }
103 }
104 }
105 return( 0 );
106 }
107 }
108 |
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