Java Transformer.setURIResolver方法代码示例

import javax.xml.transform.Transformer; //导入方法依赖的package包/类
/**
 * Performs the XSLT transformation.
 */
private String doTransform(final Transformer transformer, final Source input, final URIResolver resolver)
{
	final StringWriter writer = new StringWriter();
	final StreamResult output = new StreamResult(writer);

	if( resolver != null )
	{
		transformer.setURIResolver(resolver);
	}

	try
	{
		transformer.transform(input, output);
	}
	catch( final TransformerException ex )
	{
		throw new RuntimeException("Error transforming XSLT", ex);
	}

	return writer.toString();
}
 

import javax.xml.transform.Transformer; //导入方法依赖的package包/类
Transformer createTransformer() throws Exception {
    // Prepare sources for transormation
    Source xslsrc = new StreamSource(new StringReader(xsl));

    // Create factory and transformer
    TransformerFactory tf;
    // newTransformer() method doc states that different transformer
    // factories can be used concurrently by different Threads.
    synchronized (TransformerFactory.class) {
        tf = TransformerFactory.newInstance();
    }
    Transformer t = tf.newTransformer(xslsrc);

    // Set URI Resolver to return the newly constructed xml
    // stream source object from xml test string
    t.setURIResolver((String href, String base) -> new StreamSource(new StringReader(xml)));
    return t;
}
 

import javax.xml.transform.Transformer; //导入方法依赖的package包/类
/**
 * This is to test the URIResolver.resolve() method when there is an error
 * in the file.
 *
 * @throws Exception If any errors occur.
 */
@Test
public static void docResolver01() throws Exception {
    try (FileInputStream fis = new FileInputStream(XML_DIR + "doctest.xsl")) {
        URIResolverTest resolver = new URIResolverTest("temp/colors.xml", SYSTEM_ID);
        StreamSource streamSource = new StreamSource(fis);
        streamSource.setSystemId(SYSTEM_ID);

        Transformer transformer = TransformerFactory.newInstance().newTransformer(streamSource);
        transformer.setURIResolver(resolver);

        File f = new File(XML_DIR + "myFake.xml");
        Document document = DocumentBuilderFactory.newInstance().
                newDocumentBuilder().parse(f);

        // Use a Transformer for output
        DOMSource source = new DOMSource(document);
        StreamResult result = new StreamResult(System.err);
        // No exception is expected because resolver resolve wrong URI.
        transformer.transform(source, result);
    }
}
 

import javax.xml.transform.Transformer; //导入方法依赖的package包/类
/**
 * javax.xml.transform.sax.TransformerFactory implementation.
 * Process the Source into a Templates object, which is a a compiled
 * representation of the source. Note that this method should not be
 * used with XSLTC, as the time-consuming compilation is done for each
 * and every transformation.
 *
 * @return A Templates object that can be used to create Transformers.
 * @throws TransformerConfigurationException
 */
@Override
public Transformer newTransformer(Source source) throws
    TransformerConfigurationException
{
    final Templates templates = newTemplates(source);
    final Transformer transformer = templates.newTransformer();
    if (_uriResolver != null) {
        transformer.setURIResolver(_uriResolver);
    }
    return(transformer);
}
 

import javax.xml.transform.Transformer; //导入方法依赖的package包/类
/**
 * javax.xml.transform.sax.SAXTransformerFactory implementation.
 * Get a TransformerHandler object that can process SAX ContentHandler
 * events into a Result. This method will return a pure copy transformer.
 *
 * @return A TransformerHandler object that can handle SAX events
 * @throws TransformerConfigurationException
 */
@Override
public TransformerHandler newTransformerHandler()
    throws TransformerConfigurationException
{
    final Transformer transformer = newTransformer();
    if (_uriResolver != null) {
        transformer.setURIResolver(_uriResolver);
    }
    return new TransformerHandlerImpl((TransformerImpl) transformer);
}
 

import javax.xml.transform.Transformer; //导入方法依赖的package包/类
Transformer createTransformer() throws Exception {
    // Prepare sources for transormation
    Source xslsrc = new StreamSource(new StringReader(xsl));

    // Create factory and transformer
    TransformerFactory tf = TransformerFactory.newInstance();
    Transformer t = tf.newTransformer(xslsrc);

    // Set URI Resolver to return the newly constructed xml
    // stream source object from xml test string
    t.setURIResolver((String href, String base) -> new StreamSource(new StringReader(xml)));
    return t;
}
 

import javax.xml.transform.Transformer; //导入方法依赖的package包/类
/**
 * Renders an XML file into a PDF file by applying a stylesheet
 * that converts the XML to XSL-FO. The PDF is written to a byte array
 * that is returned as the method's result.
 * @param xml the XML file
 * @param xslt the XSLT file
 * @param response HTTP response object
 * @throws FOPException If an error occurs during the rendering of the
 * XSL-FO
 * @throws TransformerException If an error occurs during XSL
 * transformation
 * @throws IOException In case of an I/O problem
 */
public void renderXML(String xml, String xsl, HttpServletResponse response, ServletContext context)
            throws FOPException, TransformerException, IOException {

    URIResolver uriResolver = new ServletContextURIResolver(context);

    //Setup sources
    Source xmlSrc = new StreamSource(new StringReader(xml));       

    String realpath = context.getRealPath(xsl);


    Source xsltSrc = new StreamSource(new File(realpath));

    //Le damos el path real de la aplicacion para que encuentre los ficheros
    realpath = context.getRealPath(".");
    

    //this.transFactory.setURIResolver(uriResolver);
    Transformer transformer = this.transFactory.newTransformer(xsltSrc);
    transformer.setURIResolver(uriResolver);

    //Start transformation and rendering process
    render(xmlSrc, transformer, response, realpath);
}
 

import javax.xml.transform.Transformer; //导入方法依赖的package包/类
/**
 * bug 8062518
 * Verifies that a reference to the DTM created by XSLT document function is
 * actually read from the DTM by an extension function.
 * @param xml Content of xml file to process
 * @param xsl stylesheet content that loads external document {@code externalDoc}
 *        with XSLT 'document' function and then reads it with
 *        DocumentExtFunc.test() function
 * @param externalDoc Content of the external xml document
 * @param expectedResult Expected transformation result
 **/
@Test(dataProvider = "document")
public void testDocument(final String xml, final String xsl,
                         final String externalDoc, final String expectedResult) throws Exception {
    // Prepare sources for transormation
    Source src = new StreamSource(new StringReader(xml));
    Source xslsrc = new StreamSource(new StringReader(xsl));

    // Create factory and transformer
    TransformerFactory tf = TransformerFactory.newInstance();
    Transformer t = tf.newTransformer( xslsrc );
    t.setErrorListener(tf.getErrorListener());

    // Set URI Resolver to return the newly constructed xml
    // stream source object from xml test string
    t.setURIResolver(new URIResolver() {
        @Override
        public Source resolve(String href, String base)
                throws TransformerException {
            if (href.contains("externalDoc")) {
                return new StreamSource(new StringReader(externalDoc));
            } else {
                return new StreamSource(new StringReader(xml));
            }
        }
    });

    // Prepare output stream
    StringWriter xmlResultString = new StringWriter();
    StreamResult xmlResultStream = new StreamResult(xmlResultString);

    //Transform the xml
    t.transform(src, xmlResultStream);

    // If the document can't be accessed and the bug is in place then
    // reported exception will be thrown during transformation
    System.out.println("Transformation result:"+xmlResultString.toString().trim());

    // Check the result - it should contain two (node name, node values) entries -
    // one for original document, another for a document created with
    // call to 'document' function
    assertEquals(xmlResultString.toString().trim(), expectedResult);
}
 

import javax.xml.transform.Transformer; //导入方法依赖的package包/类
/**
 * @bug 8062518 8153082
 * Verifies that a reference to the DTM created by XSLT document function is
 * actually read from the DTM by an extension function.
 * @param xml Content of xml file to process
 * @param xsl stylesheet content that loads external document {@code externalDoc}
 *        with XSLT 'document' function and then reads it with
 *        DocumentExtFunc.test() function
 * @param externalDoc Content of the external xml document
 * @param expectedResult Expected transformation result
 **/
@Test(dataProvider = "document")
public void testDocument(final String xml, final String xsl,
                         final String externalDoc, final String expectedResult) throws Exception {
    // Prepare sources for transormation
    Source src = new StreamSource(new StringReader(xml));
    Source xslsrc = new StreamSource(new StringReader(xsl));

    // Create factory and transformer
    TransformerFactory tf = TransformerFactory.newInstance();
    tf.setFeature(ORACLE_ENABLE_EXTENSION_FUNCTION, true);
    tf.setAttribute(EXTENSION_CLASS_LOADER,
            runWithAllPerm(() -> Thread.currentThread().getContextClassLoader()));
    Transformer t = tf.newTransformer( xslsrc );
    t.setErrorListener(tf.getErrorListener());

    // Set URI Resolver to return the newly constructed xml
    // stream source object from xml test string
    t.setURIResolver(new URIResolver() {
        @Override
        public Source resolve(String href, String base)
                throws TransformerException {
            if (href.contains("externalDoc")) {
                return new StreamSource(new StringReader(externalDoc));
            } else {
                return new StreamSource(new StringReader(xml));
            }
        }
    });

    // Prepare output stream
    StringWriter xmlResultString = new StringWriter();
    StreamResult xmlResultStream = new StreamResult(xmlResultString);

    //Transform the xml
    t.transform(src, xmlResultStream);

    // If the document can't be accessed and the bug is in place then
    // reported exception will be thrown during transformation
    System.out.println("Transformation result:"+xmlResultString.toString().trim());

    // Check the result - it should contain two (node name, node values) entries -
    // one for original document, another for a document created with
    // call to 'document' function
    assertEquals(xmlResultString.toString().trim(), expectedResult);
}