Java XPath类代码示例

import org.jdom.xpath.XPath; //导入依赖的package包/类
private HttpClient login(PostMethod method) throws Exception {
  HttpClient client = getHttpClient();
  int status = client.executeMethod(method);
  if (status != 200) {
    throw new Exception("Error logging in: " + method.getStatusLine());
  }
  Document document = new SAXBuilder(false).build(method.getResponseBodyAsStream()).getDocument();
  XPath path = XPath.newInstance("/response/token");
  Element result = (Element)path.selectSingleNode(document);
  if (result == null) {
    Element error = (Element)XPath.newInstance("/response/error").selectSingleNode(document);
    throw new Exception(error == null ? "Error logging in" : error.getText());
  }
  token = result.getTextTrim();
  return client;
}
 

import org.jdom.xpath.XPath; //导入依赖的package包/类
private void updateAlias(String includeOrigin, String includeDestination, File ear) throws JDOMException, IOException, JDOMException {
	TFile xmlTIBCO = new TFile(ear.getAbsolutePath() + File.separator + "TIBCO.xml");
	String tempPath = ear.getParentFile().getAbsolutePath() + File.separator + "TIBCO.xml";
	TFile xmlTIBCOTemp = new TFile(tempPath);

	truezip.copyFile(xmlTIBCO, xmlTIBCOTemp);

	File xmlTIBCOFile = new File(tempPath);

	SAXBuilder sxb = new SAXBuilder();
	Document document = sxb.build(xmlTIBCOFile);

	XPath xpa = XPath.newInstance("//dd:NameValuePairs/dd:NameValuePair[starts-with(dd:name, 'tibco.alias') and dd:value='" + includeOrigin + "']/dd:value");
	xpa.addNamespace("dd", "http://www.tibco.com/xmlns/dd");

	Element singleNode = (Element) xpa.selectSingleNode(document);
	if (singleNode != null) {
		singleNode.setText(includeDestination);
		XMLOutputter xmlOutput = new XMLOutputter();
		xmlOutput.setFormat(Format.getPrettyFormat().setIndent("    "));
		xmlOutput.output(document, new FileWriter(xmlTIBCOFile));

		truezip.copyFile(xmlTIBCOTemp, xmlTIBCO);
	}

	updateAliasInPARs(includeOrigin, includeDestination, ear);
}
 

import org.jdom.xpath.XPath; //导入依赖的package包/类
private void updateAliasInPARs(String includeOrigin, String includeDestination, File ear) throws IOException, JDOMException {
	TrueZipFileSet pars = new TrueZipFileSet();
	pars.setDirectory(ear.getAbsolutePath());
	pars.addInclude("*.par");
	List<TFile> parsXML = truezip.list(pars);
	for (TFile parXML : parsXML) {
		TFile xmlTIBCO = new TFile(parXML, "TIBCO.xml");

		String tempPath = ear.getParentFile().getAbsolutePath() + File.separator + "TIBCO.xml";
		TFile xmlTIBCOTemp = new TFile(tempPath);

		truezip.copyFile(xmlTIBCO, xmlTIBCOTemp);

		File xmlTIBCOFile = new File(tempPath);

		SAXBuilder sxb = new SAXBuilder();
		Document document = sxb.build(xmlTIBCOFile);

		XPath xpa = XPath.newInstance("//dd:NameValuePairs/dd:NameValuePair[dd:name='EXTERNAL_JAR_DEPENDENCY']/dd:value");
		xpa.addNamespace("dd", "http://www.tibco.com/xmlns/dd");

		Element singleNode = (Element) xpa.selectSingleNode(document);
		if (singleNode != null) {
			String value = singleNode.getText().replace(includeOrigin, includeDestination);
			singleNode.setText(value);
			XMLOutputter xmlOutput = new XMLOutputter();
			xmlOutput.setFormat(Format.getPrettyFormat().setIndent("    "));
			xmlOutput.output(document, new FileWriter(xmlTIBCOFile));

			truezip.copyFile(xmlTIBCOTemp, xmlTIBCO);
		}
	}
}
 

import org.jdom.xpath.XPath; //导入依赖的package包/类
/**
 * Retrieves the text elements for a given xpath expression
 * 
 * @param xPathExpression
 * @return
 */
public ArrayList<String> GetElementList(String xPathExpression) {
    try {
        ArrayList<String> values = new ArrayList<String>();
        List<?> nodeList = XPath.selectNodes(this.xmlDocument, xPathExpression);

        Iterator<?> iter = nodeList.iterator();
        while (iter.hasNext()) {
            org.jdom.Element element = (org.jdom.Element) iter.next();
            values.add(element.getText());
        }
        return values;
    } catch (Exception ex) {
        LOG.error("Error in handler: " + ex.getMessage(), ex);
        return null;
    }
}
 

import org.jdom.xpath.XPath; //导入依赖的package包/类
public double getMoleculeMass(String a_strType, boolean a_bMonoisotopic) throws Exception, ParameterException 
{
    XPath xpath = XPath.newInstance("/defaults/molecules/small_molecules");
    for (Iterator t_iterPersub = xpath.selectNodes( this.m_docDefaultMasses ).iterator(); t_iterPersub.hasNext();) 
    {
        Element t_objElementMain = (Element) t_iterPersub.next();
        if ( t_objElementMain.getChild("name").getTextTrim().equals(a_strType) )
        {
            Element t_objElementMass = null;
            if ( a_bMonoisotopic ) 
            {
                t_objElementMass = t_objElementMain.getChild("mass_mono");
            }
            else
            {
                t_objElementMass = t_objElementMain.getChild("mass_avg");
            }
            return Double.parseDouble(t_objElementMass.getTextTrim());
        }
    }
    throw new ParameterException("Unknown small molecule.");
}
 

import org.jdom.xpath.XPath; //导入依赖的package包/类
public double getIonMass(String a_strIon, boolean a_bMonoisotopic) throws ParameterException, Exception 
{
    XPath xpath = XPath.newInstance("/defaults/ions/ion");
    for (Iterator t_iterIon = xpath.selectNodes( this.m_docDefaultMasses ).iterator(); t_iterIon.hasNext();) 
    {
        Element t_objElementMain = (Element) t_iterIon.next();
        if ( t_objElementMain.getChild("formula").getTextTrim().equals(a_strIon) )
        {
            Element t_objElementMass = null;
            if ( a_bMonoisotopic ) 
            {
                t_objElementMass = t_objElementMain.getChild("mass_mono");
            }
            else
            {
                t_objElementMass = t_objElementMain.getChild("mass_avg");
            }
            return (Double.parseDouble(t_objElementMass.getTextTrim()) - this.getMassE(a_bMonoisotopic));
        }
    }
    throw new ParameterException("Unknown ion.");
}
 

import org.jdom.xpath.XPath; //导入依赖的package包/类
/**
 * Gives the mass of the increment 
 * 
 * @param a_strPerSub type of persubstitution
 * @param a_bMonoIsotopic true if monoisotopic mass
 * @return
 * @throws JDOMException
 * @throws ParameterException thrown if type of persubstitution is unknown
 */
public double getIncrementMass(Persubstitution a_strPerSub , boolean a_bMonoIsotopic) throws ParameterException, Exception
{
    XPath xpath = XPath.newInstance("/defaults/persubstitutions/persubstitution");
    for (Iterator t_iterPersub = xpath.selectNodes( this.m_docDefaultMasses ).iterator(); t_iterPersub.hasNext();) 
    {
        Element t_objElementPersub = (Element) t_iterPersub.next();
        if ( t_objElementPersub.getChild("name").getTextTrim().equals(a_strPerSub.getAbbr()) )
        {
            Element t_objElementMass = null;
            if ( a_bMonoIsotopic )
            {
                t_objElementMass = t_objElementPersub.getChild("increment_mono");
            }
            else
            {
                t_objElementMass = t_objElementPersub.getChild("increment_avg");
            }
            return Double.parseDouble(t_objElementMass.getTextTrim());
        }
    }
    throw new ParameterException("Unknown persubstitution.");
}
 

import org.jdom.xpath.XPath; //导入依赖的package包/类
/**
 * Gives the mass of the increment for A/X fragments 
 * 
 * @param a_strPerSub type of persubstitution
 * @param a_bMonoIsotopic true if monoisotopic mass
 * @return
 * @throws JDOMException
 * @throws ParameterException thrown if type of persubstitution is unknown
 */
public double getIncrementMassAX(Persubstitution a_strPerSub , boolean a_bMonoIsotopic) throws ParameterException, Exception
{
    XPath xpath = XPath.newInstance("/defaults/persubstitutions/persubstitution");
    for (Iterator t_iterPersub = xpath.selectNodes( this.m_docDefaultMasses ).iterator(); t_iterPersub.hasNext();) 
    {
        Element t_objElementPersub = (Element) t_iterPersub.next();
        if ( t_objElementPersub.getChild("name").getTextTrim().equals(a_strPerSub.getAbbr()) )
        {
            if ( a_bMonoIsotopic )
            {
                return ( Double.parseDouble(t_objElementPersub.getChild("increment_mono").getTextTrim()) 
                        - Double.parseDouble(t_objElementPersub.getChild("mono").getTextTrim()));
            }
            else
            {
                return ( Double.parseDouble(t_objElementPersub.getChild("increment_avg").getTextTrim()) 
                        - Double.parseDouble(t_objElementPersub.getChild("avg").getTextTrim()));
            }
        }
    }
    throw new ParameterException("Unknown persubstitution.");
}
 

import org.jdom.xpath.XPath; //导入依赖的package包/类
public double getNonReducingDifference(Persubstitution a_objPersub, boolean a_bMonoisotopic) throws ParameterException, Exception
{
    XPath xpath = XPath.newInstance("/defaults/persubstitutions/persubstitution");
    for (Iterator t_iterPersub = xpath.selectNodes( this.m_docDefaultMasses ).iterator(); t_iterPersub.hasNext();) 
    {
        Element t_objElementPersub = (Element) t_iterPersub.next();
        if ( t_objElementPersub.getChild("name").getTextTrim().equals(a_objPersub.getAbbr()) )
        {
            Element t_objElementMass = null;
            if ( a_bMonoisotopic ) 
            {
                t_objElementMass = t_objElementPersub.getChild("ergaenzung_nonred_mono");
            }
            else
            {
                t_objElementMass = t_objElementPersub.getChild("ergaenzung_nonred_avg");
            }
            if ( t_objElementMass == null )
            {
                throw new ParameterException("Unknown persubstitution type.");
            }
            return Double.parseDouble(t_objElementMass.getTextTrim());
        }
    }
    throw new ParameterException("Unknown persubstitution type.");
}
 

import org.jdom.xpath.XPath; //导入依赖的package包/类
private void 
preProcessResources(Element the_manifest,
  DefaultHandler the_handler) {
 XPath path;
 List<Attribute> results;
 try {
  path = XPath.newInstance(FILE_QUERY);
  path.addNamespace(ns.getNs());
  results = path.selectNodes(the_manifest);
  for (Attribute result : results) {
	  the_handler.preProcessFile(result.getValue()); 
  }
 } catch (JDOMException | ClassCastException e) {
  log.info("Error processing xpath for files", e);
 }
}
 

import org.jdom.xpath.XPath; //导入依赖的package包/类
/**
    * Converts XML affiliations into map of avro objects.
    * Never returns null.
    * @param source main XML element
    */
   private static Map<String, Affiliation> convertAffiliations(Element source) {
       try {
           XPath xPath = XPath.newInstance("/article/front//contrib-group/aff");
           @SuppressWarnings("unchecked")
           List<Element> nodeList = xPath.selectNodes(source);
           if (nodeList == null || nodeList.isEmpty()) {
               return Collections.emptyMap();
           }
           Map<String, Affiliation> affiliations = new LinkedHashMap<String, Affiliation>();
           for (Element node : nodeList) {
               CermineAffiliation cAff = cermineAffiliationBuilder.build(node);
               affiliations.put(node.getAttributeValue("id"), cermineToMetadataAffConverter.convert(cAff));
           }
           return affiliations;
       } catch (JDOMException ex) {
           return Collections.emptyMap();
       }
}
 

import org.jdom.xpath.XPath; //导入依赖的package包/类
@Override
protected String getPortInfo() {
    String portInfo = getProperty("jetty.port");
    if (!StringUtil.isEmptyOrSpaces(portInfo)) return portInfo;
    try {
        final String portPath = "connectors/connector/port";
        List list = XPath.selectNodes(plugin.getConfigurationElement(), portPath);
        for (Object e : list) {
            Content content = (Content) e;
            if (!StringUtil.isEmptyOrSpaces(content.getValue())) {
                return content.getValue();
            }
        }
    } catch (JDOMException ignore) {
    }
    return super.getPortInfo();
}
 

import org.jdom.xpath.XPath; //导入依赖的package包/类
private Task[] getCases(String q) throws Exception {
  HttpClient client = login(getLoginMethod());
  PostMethod method = new PostMethod(getUrl() + "/api.asp");
  method.addParameter("token", token);
  method.addParameter("cmd", "search");
  method.addParameter("q", q);
  method.addParameter("cols", "sTitle,fOpen,dtOpened,dtLastUpdated,ixCategory");
  int status = client.executeMethod(method);
  if (status != 200) {
    throw new Exception("Error listing cases: " + method.getStatusLine());
  }
  Document document = new SAXBuilder(false).build(method.getResponseBodyAsStream()).getDocument();
  XPath path = XPath.newInstance("/response/cases/case");
  final XPath commentPath = XPath.newInstance("events/event");
  @SuppressWarnings("unchecked") final List<Element> nodes = (List<Element>)path.selectNodes(document);
  final List<Task> tasks = ContainerUtil.mapNotNull(nodes, new NotNullFunction<Element, Task>() {
    @NotNull
    @Override
    public Task fun(Element element) {
      return createCase(element, commentPath);
    }
  });
  return tasks.toArray(new Task[tasks.size()]);
}
 

import org.jdom.xpath.XPath; //导入依赖的package包/类
@Test
public void testVersions() throws Exception {

    XPath xpath = XPath.newInstance("/ns:project/ns:properties");
    xpath.addNamespace(Namespace.getNamespace("ns", "http://maven.apache.org/POM/4.0.0"));
    Element node = (Element) xpath.selectSingleNode(wfcRoot);
    for (Object child : node.getChildren()) {
        String wfcKey = ((Element) child).getName();
        String wfcVal = ((Element) child).getText();
        String targetVal = getTargetValue(wfcKey);
        if (targetVal != null) {
            if (!targetVal.equals(wfcVal) && !targetVal.startsWith(wfcVal + ".redhat")) {
                problems.add(wfcKey + ": " + wfcVal + " => " + targetVal);
            }
        }
    }
    for (String line : problems) {
        System.err.println(line);
    }
    Assert.assertEquals("Mapping problems", Collections.emptyList(), problems);
}
 

import org.jdom.xpath.XPath; //导入依赖的package包/类
public String getTargetValue(String wfcKey) throws JDOMException {

        Element rootNode;
        if (wfcKey.startsWith("version.camel.")) {
            rootNode = camelRoot;
        } else if (wfcKey.startsWith("version.wildfly.")) {
            rootNode = wfRoot;
        } else {
            return null;
        }

        String targetKey = mapping.get(wfcKey);
        if (targetKey == null) {
            problems.add("Cannot find mapping for: " + wfcKey);
            return null;
        }
        XPath xpath = XPath.newInstance("/ns:project/ns:properties/ns:" + targetKey);
        xpath.addNamespace(Namespace.getNamespace("ns", "http://maven.apache.org/POM/4.0.0"));
        Element propNode = (Element) xpath.selectSingleNode(rootNode);
        if (propNode == null) {
            problems.add("Cannot obtain target property: " + targetKey);
            return null;
        }
        return propNode.getText();
    }