Errore importazione da file XML in Java

[luigi87]

Ciao A tutti, spero di postare in modo corretto questa volta :-)
Allora ho questo file XML:

<rss version="0.92">     <channel>         <title>Atlassian JIRA</title>         <link>http://jira.atlassian.com/secure/Iss...rentUser%28%29</link>         <description>An XML representation of a search request</description>                 <language>en-uk</language>                          <issue start="0" end="5" total="5"/>                 <build-info>             <version>4.2-beta3</version>             <build-number>581</build-number>             <build-date>27-09-2010</build-date>             <edition>enterprise</edition>         </build-info>  <item>                             <key id="114580">TST-23142</key>             <summary>as a student i must be up</summary>                                                                                                                             </item>  <item>                             <key id="110042">TST-22398</key>             <summary>As a student  must try this feature</summary>                                                                                                                              </item>  <item>                             <key id="108940">TST-22363</key>             <summary>As a student i must make this exam</summary>                                                                                                                                                           </item>  <item>                             <key id="108860">TST-22355</key>              <summary>bye bye</summary>                                                                                                                             </item>  <item>                             <key id="108816">TST-22353</key>             <summary>test-uniba</summary>                                                                                                                                                           </item> </channel> </rss>

e Questa classe Java:

public static void readFile(File f3) { 		 		try{ 			 					DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); 					factory.setNamespaceAware(true); 					DocumentBuilder builder = factory.newDocumentBuilder();  				 						Document doc = builder.parse(f3); 						XPathFactory factory1 = XPathFactory.newInstance(); 						XPath xpath = factory1.newXPath(); 						XPathExpression expr; 						Object result; 						expr = xpath.compile("//channel//item/key"); 						 						result = expr.evaluate(doc, XPathConstants.NODESET); 						NodeList nodeListId = (NodeList) result; 						for (int i = 0; i < nodeListId.getLength(); i++){  							id.offer(nodeListId.item(i).getTextContent()); 						} 						expr = xpath.compile("//channel//item/title"); 						result = expr.evaluate(doc, XPathConstants.NODESET); 						NodeList nodeListTitle = (NodeList) result; 						for (int i = 0; i < nodeListTitle.getLength(); i++){  							storyText.offer(nodeListTitle.item(i).getTextContent()); 							jID++; 							id.offer(Integer.toString(jID)); 						} 						expr = xpath.compile("//language"); 						result = expr.evaluate(doc, XPathConstants.NODESET); 						NodeList nodeListBody = (NodeList) result; 						for (int i = 0; i < nodeListBody.getLength(); i++)  							note.offer(nodeListBody.item(i).getTextContent()); 					  					 				}

Non rieesco ad importare i campi item con quella espressione //channel//item/summary, se invece scrivo //channel//title mi importa solo quelle del tag channel. Praticamente non riesce ad andare in profondità nell'albero. Sto impazzendo! Qualche soluzione?
Grazie mille per l'aiuto.
Luigi

[valia]

ehm potresti formattarli in modo che si leggano una riga sotto l'altra?

[luigi87]

<!--
RSS generated by JIRA (4.2-beta3#581) at Wed Oct 13 04:01:24 CDT 2010
-->
<!-- If you wish to do custom client-side styling of RSS, uncomment this:
<?xml-stylesheet href="http://jira.atlassian.com/styles/jiraxml2html.xsl" type="text/xsl"?>
-->
<rss version="0.92">
    <channel>
        <title>Atlassian JIRA</title>
        <link>http://jira.atlassian.com/secure/Iss...rentUser%28%29</link>
        <description>An XML representation of a search request</description>
                <language>en-uk</language>

                        <issue start="0" end="5" total="5"/>
                <build-info>
            <version>4.2-beta3</version>
            <build-number>581</build-number>
            <build-date>27-09-2010</build-date>
            <edition>enterprise</edition>
        </build-info>

<item>
            <title>[TST-23142] as a student i must be up</title>
                            <key id="114580">TST-23142</key>
            <summary>as a student i must be up</summary>
                            <status id="1" iconUrl="http://jira.atlassian.com/images/icons/status_open.gif">Open</status>
                                                                                                            </item>

<item>

            <title>[TST-22398] As a student  must try this feature</title>
                            <key id="110042">TST-22398</key>
            <summary>As a student  must try this feature</summary>
                            <status id="1" iconUrl="http://jira.atlassian.com/images/icons/status_open.gif">Open</status>
                                                                                                            </item>

<item>
            <title>[TST-22363] As a student i must make this exam</title>

                            <key id="108940">TST-22363</key>
            <summary>As a student i must make this exam</summary>
                            <status id="1" iconUrl="http://jira.atlassian.com/images/icons/status_open.gif">Open</status>
                                                                                                                                          </item>

<item>
            <title>[TST-22355] bye bye</title>
                            <key id="108860">TST-22355</key>

            <summary>bye bye</summary>
                            <status id="6" iconUrl="http://jira.atlassian.com/images/icons/status_closed.gif">Closed</status>
                                                                                                            </item>

<item>
            <title>[TST-22353] test-uniba</title>
                            <key id="108816">TST-22353</key>
            <summary>test-uniba</summary>

                            <status id="5" iconUrl="http://jira.atlassian.com/images/icons/status_resolved.gif">Resolved</status>
                                                                                                                                          </item>
</channel>
</rss>

	public static void readFile(File f3) {
		
		try{
			
					DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
					factory.setNamespaceAware(true);
					DocumentBuilder builder = factory.newDocumentBuilder();

				
						Document doc = builder.parse("f3");
						XPathFactory factory1 = XPathFactory.newInstance();
						XPath xpath = factory1.newXPath();
						XPathExpression expr;
						Object result;
						expr = xpath.compile("//channel/title");
						
						result = expr.evaluate(doc, XPathConstants.NODESET);
						NodeList nodeListId = (NodeList) result;
						for (int i = 0; i < nodeListId.getLength(); i++){ 
							id.offer(nodeListId.item(i).getTextContent());
						}
						expr = xpath.compile("//channel/description");
						result = expr.evaluate(doc, XPathConstants.NODESET);
						NodeList nodeListTitle = (NodeList) result;
						for (int i = 0; i < nodeListTitle.getLength(); i++){ 
							storyText.offer(nodeListTitle.item(i).getTextContent());
							jID++;
							id.offer(Integer.toString(jID));
						}
						expr = xpath.compile("//language");
						result = expr.evaluate(doc, XPathConstants.NODESET);
						NodeList nodeListBody = (NodeList) result;
						for (int i = 0; i < nodeListBody.getLength(); i++) 
							note.offer(nodeListBody.item(i).getTextContent());
					

					
				}

ecco qui scusami!