Java XMLStreamReader.hasNext方法代碼示例

import javax.xml.stream.XMLStreamReader; //導入方法依賴的package包/類
@Test
public void testStartElement() {
    try {
        XMLInputFactory xif = XMLInputFactory.newInstance();
        XMLStreamReader xsr = xif.createXMLStreamReader(this.getClass().getResource(INPUT_FILE).toExternalForm(),
                this.getClass().getResourceAsStream(INPUT_FILE));

        while (xsr.hasNext()) {
            int event = xsr.next();
            if (event == XMLStreamReader.START_ELEMENT) {
                String localName = xsr.getLocalName();
                boolean print = "para".equals(localName);
                int nrOfAttr = xsr.getAttributeCount();
                if (print) {
                    Assert.assertTrue(nrOfAttr > 0, "Default attribute declared in DTD is missing");
                }

            }
        }
    } catch (Exception e) {
        e.printStackTrace();
        Assert.fail("Exception occured: " + e.getMessage());
    }
}
 

import javax.xml.stream.XMLStreamReader; //導入方法依賴的package包/類
public static TransientSecurityIndex fromXml(String contingencyId, XMLStreamReader xmlsr) throws XMLStreamException {
    String text = null;
    while (xmlsr.hasNext()) {
        int eventType = xmlsr.next();
        switch (eventType) {
            case XMLEvent.CHARACTERS:
                text = xmlsr.getText();
                break;
            case XMLEvent.END_ELEMENT:
                if ("j".equals(xmlsr.getLocalName())) {
                    return new TransientSecurityIndex(contingencyId, Double.parseDouble(text));
                }
                break;
            default:
                break;
        }
    }
    throw new AssertionError("j element not found");
}
 

import javax.xml.stream.XMLStreamReader; //導入方法依賴的package包/類
@Test
public void testDoubleNS() throws Exception {

    final String INVALID_XML = "<foo xmlns:xmli='http://www.w3.org/XML/1998/namespacei' xmlns:xmli='http://www.w3.org/XML/1998/namespacei' />";

    try {
        XMLStreamReader xsr = XMLInputFactory.newInstance().createXMLStreamReader(new StringReader(INVALID_XML));

        while (xsr.hasNext()) {
            xsr.next();
        }

        Assert.fail("Wellformedness error expected: " + INVALID_XML);
    } catch (XMLStreamException e) {
        ; // this is expected
    }
}
 

import javax.xml.stream.XMLStreamReader; //導入方法依賴的package包/類
@Test
public void testDefaultAttrNS() {
    XMLInputFactory ifac = XMLInputFactory.newInstance();

    try {
        XMLStreamReader re = ifac.createXMLStreamReader(getClass().getResource(INPUT_FILE1).toExternalForm(),
                this.getClass().getResourceAsStream(INPUT_FILE1));
        while (re.hasNext()) {
            int event = re.next();
            if (event == XMLStreamConstants.START_ELEMENT) {
                // System.out.println("#attrs = " + re.getAttributeCount());
                Assert.assertTrue(re.getAttributeCount() == 2);
                // This works if "" is replaced by null too
                // System.out.println("attr1 = " + re.getAttributeValue("",
                // "attr1"));
                Assert.assertTrue(re.getAttributeValue("", "attr1").equals("pass"));
            }
        }
        re.close();
    } catch (Exception e) {
        e.printStackTrace();
        Assert.fail("Exception occured: " + e.getMessage());
    }
}
 

import javax.xml.stream.XMLStreamReader; //導入方法依賴的package包/類
@Test
public void testRootElementNamespace() {
    try {
        XMLInputFactory xif = XMLInputFactory.newInstance();
        xif.setProperty(XMLInputFactory.IS_NAMESPACE_AWARE, Boolean.TRUE);
        InputStream is = new java.io.ByteArrayInputStream(getXML().getBytes());
        XMLStreamReader sr = xif.createXMLStreamReader(is);
        while (sr.hasNext()) {
            int eventType = sr.next();
            if (eventType == XMLStreamConstants.START_ELEMENT) {
                if (sr.getLocalName().equals(rootElement)) {
                    Assert.assertTrue(sr.getNamespacePrefix(0).equals(prefix) && sr.getNamespaceURI(0).equals(namespaceURI));
                }
            }
        }
    } catch (Exception ex) {
        ex.printStackTrace();
    }
}
 

import javax.xml.stream.XMLStreamReader; //導入方法依賴的package包/類
@Test
public void testAttributeCountNoNS() {
    XMLInputFactory ifac = XMLInputFactory.newInstance();

    try {
        // Turn off NS awareness to count xmlns as attributes
        ifac.setProperty("javax.xml.stream.isNamespaceAware", Boolean.FALSE);

        XMLStreamReader re = ifac.createXMLStreamReader(getClass().getResource(INPUT_FILE1).toExternalForm(),
                this.getClass().getResourceAsStream(INPUT_FILE1));
        while (re.hasNext()) {
            int event = re.next();
            if (event == XMLStreamConstants.START_ELEMENT) {
                // System.out.println("#attrs = " + re.getAttributeCount());
                Assert.assertTrue(re.getAttributeCount() == 3);
            }
        }
        re.close();
    } catch (Exception e) {
        e.printStackTrace();
        Assert.fail("Exception occured: " + e.getMessage());
    }
}
 

import javax.xml.stream.XMLStreamReader; //導入方法依賴的package包/類
@Test
public void testNamespaceCount() {
    try {
        XMLInputFactory xif = XMLInputFactory.newInstance();
        xif.setProperty(XMLInputFactory.IS_NAMESPACE_AWARE, Boolean.TRUE);
        InputStream is = new java.io.ByteArrayInputStream(getXML().getBytes());
        XMLStreamReader sr = xif.createXMLStreamReader(is);
        while (sr.hasNext()) {
            int eventType = sr.next();
            if (eventType == XMLStreamConstants.START_ELEMENT) {
                if (sr.getLocalName().equals(rootElement)) {
                    int count = sr.getNamespaceCount();
                    Assert.assertTrue(count == 1);
                }
            }
        }
    } catch (Exception ex) {
        ex.printStackTrace();
    }
}
 

import javax.xml.stream.XMLStreamReader; //導入方法依賴的package包/類
private void readNode(XMLStreamReader xmlReader) throws XMLStreamException {
	int attrId = 0;
	Vertex v = null;

	for (int i = 0; i < xmlReader.getAttributeCount(); ++i) {
		String attr = xmlReader.getAttributeLocalName(i);

		if (attr.equalsIgnoreCase(NODE_ID)) {
			attrId = Integer.parseInt(xmlReader.getAttributeValue(i));
		}
	}

	v = new Vertex(attrId);

	boolean elemEnd = false;

	while (xmlReader.hasNext() && !elemEnd) {
		int event = xmlReader.next();

		if (event == XMLEvent.START_ELEMENT) {
			if (xmlReader.getLocalName().equalsIgnoreCase(DATA)) {
				readNodeData(xmlReader, v);
			}

		} else if (event == XMLEvent.END_ELEMENT) {
			if (xmlReader.getLocalName().equalsIgnoreCase(NODE)) {
				elemEnd = true;
			}
		}
	}

	network.addVertex(v);
}
 

import javax.xml.stream.XMLStreamReader; //導入方法依賴的package包/類
/**
 * workaround before the fix: provide a result
 */
@Test
public final void testStAXWResult() {
    try {
        XMLInputFactory xmlif = XMLInputFactory.newInstance();

        // XMLStreamReader staxReader =
        // xmlif.createXMLStreamReader((Source)new
        // StreamSource(getClass().getResource("Forum31576.xml").getFile()));
        XMLStreamReader staxReader = xmlif.createXMLStreamReader(this.getClass().getResourceAsStream("gMonths.xml"));

        SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
        Schema schemaGrammar = schemaFactory.newSchema(new File(getClass().getResource("gMonths.xsd").getFile()));

        Validator schemaValidator = schemaGrammar.newValidator();

        Source staxSrc = new StAXSource(staxReader);
        File resultFile = new File(USER_DIR + "gMonths.result.xml");
        if (resultFile.exists()) {
            resultFile.delete();
        }

        Result xmlResult = new javax.xml.transform.stax.StAXResult(XMLOutputFactory.newInstance().createXMLStreamWriter(new FileWriter(resultFile)));
        schemaValidator.validate(staxSrc, xmlResult);

        while (staxReader.hasNext()) {
            int eventType = staxReader.next();
            System.out.println("Event of type: " + eventType);
        }
    } catch (Exception e) {
        Assert.fail(e.getMessage());
        e.printStackTrace();
    }
}
 

import javax.xml.stream.XMLStreamReader; //導入方法依賴的package包/類
/**
 * Creates the buffer from a stream reader that is an element fragment.
 * <p>
 * The stream reader will be moved to the position of the next start of
 * an element if the stream reader is not already positioned at the start
 * of an element.
 * <p>
 * The element and all its children will be stored and after storing the stream
 * will be positioned at the next event after the end of the element.
 * <p>
 * @param storeInScopeNamespaces true if in-scope namespaces of the element
 *        fragment should be stored.
 * @return the mutable stream buffer.
 * @throws XMLStreamException if the stream reader cannot be positioned at
 *         the start of an element.
 */
public MutableXMLStreamBuffer createElementFragment(XMLStreamReader reader,
        boolean storeInScopeNamespaces) throws XMLStreamException {
    if (_buffer == null) {
        createBuffer();
    }

    if (!reader.hasNext()) {
        return _buffer;
    }

    _storeInScopeNamespacesOnElementFragment = storeInScopeNamespaces;

    _eventType = reader.getEventType();
    if (_eventType != XMLStreamReader.START_ELEMENT) {
        do {
            _eventType = reader.next();
        } while(_eventType != XMLStreamReader.START_ELEMENT && _eventType != XMLStreamReader.END_DOCUMENT);
    }

    if (storeInScopeNamespaces) {
        _inScopePrefixes = new HashMap<String,Integer>();
    }

    storeElementAndChildren(reader);

    return getXMLStreamBuffer();
}
 

import javax.xml.stream.XMLStreamReader; //導入方法依賴的package包/類
public static TsoOvervoltageSecurityIndex fromXml(String contingencyId, XMLStreamReader xmlsr) throws XMLStreamException {
    String text = null;
    boolean computationSucceed = true;
    while (xmlsr.hasNext()) {
        int eventType = xmlsr.next();
        switch (eventType) {
            case XMLEvent.CHARACTERS:
                text = xmlsr.getText();
                break;
            case XMLEvent.END_ELEMENT:
                switch (xmlsr.getLocalName()) {
                    case "computation-succeed":
                        computationSucceed = Boolean.parseBoolean(text);
                        break;

                    case "overvoltage-count":
                        return new TsoOvervoltageSecurityIndex(contingencyId, Integer.parseInt(text), computationSucceed);

                    default:
                        break;
                }
                break;

            default:
                break;
        }
    }
    throw new AssertionError("overvoltage-count element not found");
}
 

import javax.xml.stream.XMLStreamReader; //導入方法依賴的package包/類
/**
 * Method for parsing orders XML.
 * @param is input stream for parsing.
 * @return SortedMap of OrderBook's mapping key name.
 * @throws FileNotFoundException if there is no such file.
 * @throws XMLStreamException The base exception for unexpected processing errors.  This Exception
 * class is used to report well-formedness errors as well as unexpected
 * processing conditions.
 */
public SortedMap<String, OrderBook> parse(InputStream is) throws FileNotFoundException, XMLStreamException {
    SortedMap<String, OrderBook> orders = new TreeMap<>(String::compareTo);
    XMLInputFactory factory = XMLInputFactory.newInstance();
    XMLStreamReader reader = factory.createXMLStreamReader(is);
    OrderBook orderBook;
    String book;
    reader.next();
    while (reader.hasNext()) {
        if (reader.next() == XMLStreamConstants.START_ELEMENT) {
            if (reader.isStartElement()) {
                book = reader.getAttributeValue(null, "book");
                if ("AddOrder".equals(reader.getLocalName())) {
                    if (!orders.containsKey(book)) {
                        orderBook = new OrderBook(book);
                        orders.put(book, orderBook);
                    } else {
                        orderBook = orders.get(book);
                    }
                    orderBook.addOrder(OrderBook.OPERATION.valueOf(reader.getAttributeValue(null, "operation")),
                            Integer.parseInt(reader.getAttributeValue(null, "orderId")),
                            Integer.parseInt(reader.getAttributeValue(null, "volume")),
                            Float.parseFloat(reader.getAttributeValue(null, "price")));
                } else {
                    orders.get(book).delOrder(Integer.parseInt(reader.getAttributeValue(null, "orderId")));
                }
            }
        }
    }
    return orders;
}
 

import javax.xml.stream.XMLStreamReader; //導入方法依賴的package包/類
private void readXML(byte[] xmlData, String expectedContent)
        throws Exception {
    InputStream stream = new ByteArrayInputStream(xmlData);
    XMLInputFactory factory = XMLInputFactory.newInstance();
    XMLStreamReader xmlReader
            = factory.createXMLStreamReader(stream);
    boolean inTestElement = false;
    StringBuilder sb = new StringBuilder();
    while (xmlReader.hasNext()) {
        String ename;
        switch (xmlReader.getEventType()) {
            case XMLStreamConstants.START_ELEMENT:
                ename = xmlReader.getLocalName();
                if (ename.equals("writeCharactersWithString")
                        || ename.equals("writeCharactersWithArray")) {
                    inTestElement = true;
                }
                break;
            case XMLStreamConstants.END_ELEMENT:
                ename = xmlReader.getLocalName();
                if (ename.equals("writeCharactersWithString")
                        || ename.equals("writeCharactersWithArray")) {
                    inTestElement = false;
                    String content = sb.toString();
                    System.out.println(ename + " text:'" + content + "' expected:'" + expectedContent+"'");
                    Assert.assertEquals(content, expectedContent);
                    sb.setLength(0);
                }
                break;
            case XMLStreamConstants.CHARACTERS:
                if (inTestElement) {
                    sb.append(xmlReader.getText());
                }
                break;
        }
        xmlReader.next();
    }
}
 

import javax.xml.stream.XMLStreamReader; //導入方法依賴的package包/類
public static TsoDisconnectedGenerator fromXml(String contingencyId, XMLStreamReader xmlsr) throws XMLStreamException {
    String text = null;
    Map<String, Float> disconnectedGenerators = new HashMap<>();
    String id = null;
    while (xmlsr.hasNext()) {
        int eventType = xmlsr.next();
        switch (eventType) {
            case XMLEvent.CHARACTERS:
                text = xmlsr.getText();
                break;

            case XMLEvent.START_ELEMENT:
                if ("generator".equals(xmlsr.getLocalName())) {
                    id = xmlsr.getAttributeValue(null, "id");
                }
                break;

            case XMLEvent.END_ELEMENT:
                switch (xmlsr.getLocalName()) {
                    case "generator":
                        if (id == null) {
                            throw new AssertionError();
                        }
                        float p = Float.parseFloat(text);
                        disconnectedGenerators.put(id, p);
                        id = null;
                        break;
                    case "index":
                        return new TsoDisconnectedGenerator(contingencyId, disconnectedGenerators);
                    default:
                        throw new AssertionError("Unexpected element: " + xmlsr.getLocalName());
                }
                break;

            default:
                break;
        }
    }
    throw new AssertionError("Should not happen");
}
 

import javax.xml.stream.XMLStreamReader; //導入方法依賴的package包/類
private T getNextSpectrumFromSeekable() {
	FromXMLStreamBuilder<T> spectrumBuilder = null;
	try {
		InputStream is = Channels.newInputStream(this.seekable);
		XMLStreamReader xr = XMLInputFactory.newInstance()
			.createXMLStreamReader(is);
		
		while (xr.hasNext()) {
			xr.next();
			
			if (spectrumBuilder != null) {
				spectrumBuilder.accept(xr);
			}

			if(xr.getEventType() == XMLStreamReader.START_ELEMENT){
				if(xr.getLocalName().equals("spectrum")) {
					spectrumBuilder = this.factory.create(this.xml.toString(), xr);
				} else if( xr.getLocalName().equals("referenceableParamGroupRef")) {
					LOGGER.log(Level.WARN, "Random access to spectra will not parse referenceable params");
				}
			} else if(xr.getEventType() == XMLStreamReader.END_ELEMENT) {
				if(xr.getLocalName().equals("spectrum")) {
					return spectrumBuilder.build();
				}					
			}
		}
	} catch (XMLStreamException | FactoryConfigurationError e) {
		LOGGER.log(Level.ERROR, e.toString());
	} 

	return null;
}