Java Code Examples for org.springframework.core.io.Resource#getURL()

protected void scanResources(ApplicationContext applicationContext) throws IOException {
    // retrieve all resources from all JARs
    Resource[] resources = applicationContext.getResources("classpath*:META-INF/resources/webjars/**");

    for (Resource resource : resources) {
        URL url = resource.getURL();
        String urlString = url.toString();
        int classPathStartIndex = urlString.indexOf(CLASSPATH_WEBJAR_PREFIX);
        if (classPathStartIndex > 0) {
            String resourcePath = urlString.substring(classPathStartIndex + CLASSPATH_WEBJAR_PREFIX.length());
            if (!Strings.isNullOrEmpty(resourcePath)
                    && !resourcePath.endsWith("/")) {
                mapping.put(resourcePath, new UrlHolder(url));
            }
        } else {
            log.debug("Ignored WebJAR resource {} since it does not contain class path prefix {}",
                    urlString, CLASSPATH_WEBJAR_PREFIX);
        }
    }

    this.fullPathIndex = getFullPathIndex(mapping.keySet());
}
 

@Override
@Nullable
public URL getResource(String name) {
	Assert.state(this.resourceLoader != null, "ResourceLoaderClassLoadHelper not initialized");
	Resource resource = this.resourceLoader.getResource(name);
	if (resource.exists()) {
		try {
			return resource.getURL();
		}
		catch (IOException ex) {
			if (logger.isWarnEnabled()) {
				logger.warn("Could not load " + resource);
			}
			return null;
		}
	}
	else {
		return getClassLoader().getResource(name);
	}
}
 

@Override
public URL getResource(String name) {
	Resource resource = this.resourceLoader.getResource(name);
	if (resource.exists()) {
		try {
			return resource.getURL();
		}
		catch (IOException ex) {
			if (logger.isWarnEnabled()) {
				logger.warn("Could not load " + resource);
			}
			return null;
		}
	}
	else {
		return getClassLoader().getResource(name);
	}
}
 

/**
 * Read the data from the resources directory - should work for an executable Jar as
 * well as through direct execution
 */
@PostConstruct
private void setUpData() 
{
	PathMatchingResourcePatternResolver path = new PathMatchingResourcePatternResolver();
	try
	{
		for (Resource nextFile : path.getResources("tracks/*"))
		{
			URL resource = nextFile.getURL();
			File f = new File(resource.getFile()); 
			String vehicleName = VehicleNameUtils.prettifyName(f.getName());				
			vehicleNames.add(vehicleName);
			populateReportQueueForVehicle(vehicleName);
		}
	}
	catch (IOException e)
	{
		throw new RuntimeException(e);
	}
	positionTracker.clearHistories();
}
 

private URL getUrl(String resourceLocation) throws LayerException {
	if (resourceLocation.startsWith(GeomajasConstant.CLASSPATH_URL_PREFIX)) {
		resourceLocation = resourceLocation.substring(GeomajasConstant.CLASSPATH_URL_PREFIX.length());
	}
	Resource resource = applicationContext.getResource(resourceLocation);
	try {
		if (resource.exists()) {
			return resource.getURL();
		} else {
			String gwtResource = GeomajasConstant.CLASSPATH_URL_PREFIX + resourceLocation;
			Resource[] matching = applicationContext.getResources(gwtResource);
			if (matching.length > 0) {
				return matching[0].getURL();
			} else {
				log.warn(MISSING_RESOURCE, gwtResource);
				throw new LayerException(ExceptionCode.RESOURCE_NOT_FOUND, gwtResource);
			}
		}
	} catch (IOException e) {
		log.warn(MISSING_RESOURCE, resourceLocation);
		throw new LayerException(e, ExceptionCode.RESOURCE_NOT_FOUND, resourceLocation);
	}
}
 

@Override
protected int doLoadBeanDefinitions(InputSource inputSource, Resource resource) {
    // sadly, the Spring class we are extending has the critical function
    // getValidationModeForResource
    // marked private instead of protected, so trickery is called for here.
    boolean suppressValidation = false;
    try {
        URL url = resource.getURL();
        if (url.getFile().contains("META-INF/cxf/")) {
            suppressValidation = true;
        }
    } catch (IOException e) {
        // this space intentionally left blank.
    }

    int savedValidation = visibleValidationMode;
    if (suppressValidation) {
        setValidationMode(VALIDATION_NONE);
    }
    int r = super.doLoadBeanDefinitions(inputSource, resource);
    setValidationMode(savedValidation);
    return r;
}
 

protected void checkNameMatchesSelf() throws IOException {
    String expectedLocation = ModuleLocationUtils.getModuleLocation(baseDir, name);
    Resource self = resolver.getResource(expectedLocation);

    if (!self.exists()) {
        throw new IOException("Resource [" + location() + "] is expected to exist at [" + expectedLocation + "] please ensure the name property is correct");
    }

    String moduleUrl = moduleProperties.getURL().toExternalForm();
    String selfUrl = self.getURL().toExternalForm();

    if (!moduleUrl.equals(selfUrl)) {
        throw new IOException("Resource [" + location() + "] and [" + self.getURL() + "] do not appear to be the same resource, " +
            "please ensure the name property is correct or that the " + "module is not defined twice");
    }
}
 

/**
 * Try to determine the persistence unit root URL based on the given
 * "defaultPersistenceUnitRootLocation".
 * @return the persistence unit root URL to pass to the JPA PersistenceProvider
 * @see #setDefaultPersistenceUnitRootLocation
 */
private URL determineDefaultPersistenceUnitRootUrl() {
	if (this.defaultPersistenceUnitRootLocation == null) {
		return null;
	}
	try {
		Resource res = this.resourcePatternResolver.getResource(this.defaultPersistenceUnitRootLocation);
		return res.getURL();
	}
	catch (IOException ex) {
		throw new PersistenceException("Unable to resolve persistence unit root URL", ex);
	}
}
 

/**
 * Parses the path name from a resource's description
 * @param resource a resource which hides a path from us
 * @return the path name if we could parse it out
 */
protected String parseResourcePathFromUrl(Resource resource) throws IOException {
    final URL resourceUrl = resource.getURL();
    if (ResourceUtils.isJarURL(resourceUrl)) {
        final Matcher resourceUrlPathMatcher = resourceJarUrlPattern.matcher(resourceUrl.getPath());
        if (resourceUrlPathMatcher.matches() && !StringUtils.isBlank(resourceUrlPathMatcher.group(1))) {
            return "classpath:" + resourceUrlPathMatcher.group(1);
        }
    } else if (ResourceUtils.URL_PROTOCOL_FILE.equals(resourceUrl.getProtocol()) && resource.exists()) {
        return "file:" + resourceUrl.getFile();
    }
    return null;
}
 

@Override
public URL getResource(String path) throws MalformedURLException {
	Resource resource = this.resourceLoader.getResource(getResourceLocation(path));
	try {
		return resource.getURL();
	}
	catch (IOException ex) {
		logger.info("Couldn't get URL for " + resource, ex);
		return null;
	}
}
 

/**
 * Determine the persistence unit root URL based on the given resource
 * (which points to the {@code persistence.xml} file we're reading).
 * @param resource the resource to check
 * @return the corresponding persistence unit root URL
 * @throws IOException if the checking failed
 */
static URL determinePersistenceUnitRootUrl(Resource resource) throws IOException {
	URL originalURL = resource.getURL();

	// If we get an archive, simply return the jar URL (section 6.2 from the JPA spec)
	if (ResourceUtils.isJarURL(originalURL)) {
		return ResourceUtils.extractJarFileURL(originalURL);
	}

	// Check META-INF folder
	String urlToString = originalURL.toExternalForm();
	if (!urlToString.contains(META_INF)) {
		if (logger.isInfoEnabled()) {
			logger.info(resource.getFilename() +
					" should be located inside META-INF directory; cannot determine persistence unit root URL for " +
					resource);
		}
		return null;
	}
	if (urlToString.lastIndexOf(META_INF) == urlToString.lastIndexOf('/') - (1 + META_INF.length())) {
		if (logger.isInfoEnabled()) {
			logger.info(resource.getFilename() +
					" is not located in the root of META-INF directory; cannot determine persistence unit root URL for " +
					resource);
		}
		return null;
	}

	String persistenceUnitRoot = urlToString.substring(0, urlToString.lastIndexOf(META_INF));
	if (persistenceUnitRoot.endsWith("/")) {
		persistenceUnitRoot = persistenceUnitRoot.substring(0, persistenceUnitRoot.length() - 1);
	}
	return new URL(persistenceUnitRoot);
}
 

/**
 * Read the data from the resources directory - should work for an executable Jar as
 * well as through direct execution
 */
private Map<String, List<String>> setUpData() 
{
	Map<String, List<String>> reports = new HashMap<>();
	PathMatchingResourcePatternResolver path = new PathMatchingResourcePatternResolver();

	try
	{
		for (Resource nextFile : path.getResources("tracks/*"))
		{
			URL resource = nextFile.getURL();
			File f = new File(resource.getFile()); 
			String vehicleName = VehicleNameUtils.prettifyName(f.getName());
			InputStream is = PositionsimulatorApplication.class.getResourceAsStream("/tracks/" + f.getName());
			try (Scanner sc = new Scanner(is))
			{
				List<String> thisVehicleReports = new ArrayList<>();
				while (sc.hasNextLine())
				{
					String nextReport = sc.nextLine();
					thisVehicleReports.add(nextReport);
				}
				reports.put(vehicleName,thisVehicleReports);
			}
		}
		return Collections.unmodifiableMap(reports);
	}
	catch (IOException e)
	{
		throw new RuntimeException(e);
	}
}
 

private void copy(String resourceFolder, Path generatedProjectPath) throws IOException {
	ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
	Resource[] resources = resolver.getResources(ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX + resourceFolder + "/**");
	for (Resource resource : resources) {
		if (resource.exists() && resource.isReadable() && resource.contentLength() > 0) {
			URL url = resource.getURL();
			String urlString = url.toExternalForm();
			String targetName = urlString.substring(urlString.indexOf(resourceFolder) + resourceFolder.length() + 1);
			Path destination = generatedProjectPath.resolve(targetName);
			Files.createDirectories(destination.getParent());
			Files.copy(resource.getInputStream(), destination);
		}
	}
}
 

private URL toUrl(Resource resource) {
    try {
        return resource.getURL();
    } catch (IOException e) {
        throw new IllegalStateException("Failed to get url from " + resource.getDescription(), e);
    }
}
 

private static JetConfig getJetConfig(Resource configLocation) throws IOException {
    URL configUrl = configLocation.getURL();
    String configFileName = configUrl.getPath();
    InputStream inputStream = configUrl.openStream();
    if (configFileName.endsWith(".yaml") || configFileName.endsWith("yml")) {
        return new YamlJetConfigBuilder(inputStream).build();
    }
    return new XmlJetConfigBuilder(inputStream).build();
}
 

@Override
public URL getResource(String path) throws MalformedURLException {
	Resource resource = this.resourceLoader.getResource(getResourceLocation(path));
	try {
		return resource.getURL();
	}
	catch (IOException ex) {
		logger.info("Couldn't get URL for " + resource, ex);
		return null;
	}
}
 

public URL locateResource(String uri) {
	URL url = null;
	try {
		Resource resource = resourceService.find(uri);
		url = resource.getURL();
	} catch (Exception e) { // NOSONAR
		log.warn(MISSING_RESOURCE, uri);
	}
	return url;
}
 

/**
 * Determine the persistence unit root URL based on the given resource
 * (which points to the {@code persistence.xml} file we're reading).
 * @param resource the resource to check
 * @return the corresponding persistence unit root URL
 * @throws IOException if the checking failed
 */
@Nullable
static URL determinePersistenceUnitRootUrl(Resource resource) throws IOException {
	URL originalURL = resource.getURL();

	// If we get an archive, simply return the jar URL (section 6.2 from the JPA spec)
	if (ResourceUtils.isJarURL(originalURL)) {
		return ResourceUtils.extractJarFileURL(originalURL);
	}

	// Check META-INF folder
	String urlToString = originalURL.toExternalForm();
	if (!urlToString.contains(META_INF)) {
		if (logger.isInfoEnabled()) {
			logger.info(resource.getFilename() +
					" should be located inside META-INF directory; cannot determine persistence unit root URL for " +
					resource);
		}
		return null;
	}
	if (urlToString.lastIndexOf(META_INF) == urlToString.lastIndexOf('/') - (1 + META_INF.length())) {
		if (logger.isInfoEnabled()) {
			logger.info(resource.getFilename() +
					" is not located in the root of META-INF directory; cannot determine persistence unit root URL for " +
					resource);
		}
		return null;
	}

	String persistenceUnitRoot = urlToString.substring(0, urlToString.lastIndexOf(META_INF));
	if (persistenceUnitRoot.endsWith("/")) {
		persistenceUnitRoot = persistenceUnitRoot.substring(0, persistenceUnitRoot.length() - 1);
	}
	return new URL(persistenceUnitRoot);
}
 

private void scanPackage(SpringPersistenceUnitInfo scannedUnit, String pkg) {
	if (this.componentsIndex != null) {
		Set<String> candidates = new HashSet<>();
		for (AnnotationTypeFilter filter : entityTypeFilters) {
			candidates.addAll(this.componentsIndex.getCandidateTypes(pkg, filter.getAnnotationType().getName()));
		}
		candidates.forEach(scannedUnit::addManagedClassName);
		Set<String> managedPackages = this.componentsIndex.getCandidateTypes(pkg, "package-info");
		managedPackages.forEach(scannedUnit::addManagedPackage);
		return;
	}

	try {
		String pattern = ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX +
				ClassUtils.convertClassNameToResourcePath(pkg) + CLASS_RESOURCE_PATTERN;
		Resource[] resources = this.resourcePatternResolver.getResources(pattern);
		MetadataReaderFactory readerFactory = new CachingMetadataReaderFactory(this.resourcePatternResolver);
		for (Resource resource : resources) {
			if (resource.isReadable()) {
				MetadataReader reader = readerFactory.getMetadataReader(resource);
				String className = reader.getClassMetadata().getClassName();
				if (matchesFilter(reader, readerFactory)) {
					scannedUnit.addManagedClassName(className);
					if (scannedUnit.getPersistenceUnitRootUrl() == null) {
						URL url = resource.getURL();
						if (ResourceUtils.isJarURL(url)) {
							scannedUnit.setPersistenceUnitRootUrl(ResourceUtils.extractJarFileURL(url));
						}
					}
				}
				else if (className.endsWith(PACKAGE_INFO_SUFFIX)) {
					scannedUnit.addManagedPackage(
							className.substring(0, className.length() - PACKAGE_INFO_SUFFIX.length()));
				}
			}
		}
	}
	catch (IOException ex) {
		throw new PersistenceException("Failed to scan classpath for unlisted entity classes", ex);
	}
}
 

/**
 * Set the WSDL document URL as a {@link Resource}.
 * @throws IOException
 * @since 3.2
 */
public void setWsdlDocumentResource(Resource wsdlDocumentResource) throws IOException {
	Assert.notNull(wsdlDocumentResource, "WSDL Resource must not be null.");
	this.wsdlDocumentUrl = wsdlDocumentResource.getURL();
}