Example usage for java.lang Class getResourceAsStream

Introduction

In this page you can find the example usage for java.lang Class getResourceAsStream.

Prototype

@CallerSensitive
public InputStream getResourceAsStream(String name) 

Source Link

Document

Finds a resource with a given name.

Usage

From source file:org.jasig.ssp.TestUtils.java

/**
 * Load and parse a JSON file based on the testClass and file.
 * //  ww  w .ja v a2  s  .  c  o m
 * <p>
 * JSON file must not contain any line breaks or new line characters.
 * 
 * <p>
 * For example, if testClass is
 * <code>org.jasig.mygps.business.StudentIntakeFormManagerTest</code> and
 * file is <code>studentintakeform_empty.json</code>, this method will
 * attempt to load the file
 * <code>org/jasig/mygps/business/studentintakeform_empty.json</code>.
 * 
 * @param testClass
 *            Testing class, used for resource loading based on the
 *            concatenated namespace and file name, via {link
 *            Class#getResourceAsStream(String)}. Required.
 * @param file
 *            the JSON file to load, relative to the namespace of the
 *            calling testClass. Required.
 * @param TOClass
 *            Required; serializes the JSON to this transfer object class.
 *            If the JSON can not be serialized to this class, an exception
 *            will be thrown.
 * @return Transfer object equivalent of the JSON file contents
 * @exception JsonParseException
 *                if test file could not be parsed
 * @exception JsonMappingException
 *                if test file could not be mapped
 * @exception IOException
 *                if test file could not be loaded, or missing/empty file
 */
public static <T, TO, TS> TO loadJson(@NotNull final Class<TS> testClass, @NotNull final String file,
        @NotNull final Class<TO> TOClass) throws JsonParseException, JsonMappingException, IOException {
    if (!StringUtils.isNotBlank(file)) {
        throw new IOException("Missing file parameter.");
    }

    assertNotNull("Test suite class can not be null.", testClass);
    assertNotNull("Transfer object class can not be null.", TOClass);

    // Load file
    try {
        final InputStreamReader is = new InputStreamReader(testClass.getResourceAsStream(file));

        final BufferedReader in = new BufferedReader(is);

        final String json = in.readLine();
        LOGGER.debug("Test class {} loaded the following JSON: {}", testClass.getName() + " with file " + file,
                json);

        final TO obj = objectMapper.readValue(json, TOClass);

        if (in != null) {
            in.close();
        }

        if (is != null) {
            is.close();
        }

        assertNotNull("File data could not be parsed from " + file, obj);

        return obj;
    } catch (final NullPointerException exc) { // NOPMD NPE is in library
        throw new IOException("Could not load the specified file "
                + testClass.getPackage().getName().replace('.', '/') + "/" + file, exc);
    } catch (final UnrecognizedPropertyException exc) {
        throw new JsonMappingException(
                "JSON fields did not match transfer object class properties. See exception cause for erroneous field names.",
                exc);
    }
}

---

From source file:de.alpharogroup.lang.ClassUtils.java

/**
 * This method call the getResourceAsStream from the ClassLoader. You can use this method to
 * read files from jar-files./*from ww  w.  jav  a2s.  c  o m*/
 *
 * @param clazz
 *            the clazz
 * @param uri
 *            The uri as String.
 * @return The InputStream from the uri.
 */
public static InputStream getResourceAsStream(final Class<?> clazz, final String uri) {
    InputStream is = clazz.getResourceAsStream(uri);
    if (null == is) {
        is = ClassUtils.getClassLoader().getResourceAsStream(uri);
    }
    return is;
}

---

From source file:org.fuin.owndeb.commons.DebUtils.java

/**
 * Reads a resource and writes the replaced string into a file with the same
 * name.//  w w  w .j  av  a  2s  . co m
 * 
 * @param clasz
 *            Class to use for reading teh resource.
 * @param resource
 *            Full path to the resource.
 * @param outDir
 *            Output directory to create a file inside.
 * @param vars
 *            Variables to replace.
 */
public static void writeReplacedResource(final Class<?> clasz, final String resource, final File outDir,
        final Map<String, String> vars) {

    LOG.info("Write replaced resource '{}' to directory: {}", resource, outDir);

    final File outFile = new File(outDir, FilenameUtils.getName(resource));
    try {
        final InputStream inStream = clasz.getResourceAsStream(resource);
        if (inStream == null) {
            throw new IllegalArgumentException("Unable to locate resource: " + resource);
        }
        try {
            final String inStr = IOUtils.toString(inStream);
            final String outStr = Utils4J.replaceVars(inStr, vars);
            LOG.debug("Write resource {}\n{}", outFile, outStr);
            FileUtils.writeStringToFile(outFile, outStr);
        } finally {
            inStream.close();
        }
    } catch (IOException ex) {
        throw new RuntimeException(
                "Error replacing and writing resource file '" + resource + "' to: " + outFile, ex);
    }
}

---

From source file:com.redhat.rhn.testing.TestUtils.java

/**
 * method to find a file relative to the calling class.  primarily
 * useful when writing tests that need access to external data.
 * this lets you put the data relative to the test class file.
 *
 * @param path the path, relative to caller's location
 * @return URL a URL referencing the file
 * @throws ClassNotFoundException if the calling class can not be found
 * (i.e., should not happen)/*from  w ww. j  a v a2  s . c  o  m*/
 * @throws IOException if the specified file in an archive (eg. jar) and
 * it cannot be copied to a temporary location
 */
public static URL findTestData(String path) throws ClassNotFoundException, IOException {
    Throwable t = new Throwable();
    StackTraceElement[] ste = t.getStackTrace();

    String className = ste[1].getClassName();
    Class clazz = Class.forName(className);

    URL ret = clazz.getResource(path);

    if (ret.toString().contains("!")) { // file is from an archive
        String tempPath = "/tmp/" + filePrefix + ret.hashCode();
        InputStream input = clazz.getResourceAsStream(path);

        OutputStream output = new FileOutputStream(tempPath);
        IOUtils.copy(input, output);

        return new File(tempPath).toURI().toURL();
    }

    return ret;
}

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From source file:org.keycloak.testsuite.helper.adapter.SamlAdapterTestStrategy.java

public static RealmModel baseAdapterTestInitialization(KeycloakSession session, RealmManager manager,
        RealmModel adminRealm, Class<?> clazz) {
    RealmRepresentation representation = KeycloakServer
            .loadJson(clazz.getResourceAsStream("/keycloak-saml/testsaml.json"), RealmRepresentation.class);
    RealmModel demoRealm = manager.importRealm(representation);
    return demoRealm;
}

---

From source file:de.alpharogroup.lang.ClassExtensions.java

/**
 * This method call the getResourceAsStream from the ClassLoader. You can use this method to
 * read files from jar-files./*from  w w  w .  jav a2s.  co  m*/
 *
 * @param clazz
 *            the clazz
 * @param uri
 *            The uri as String.
 * @return The InputStream from the uri.
 */
public static InputStream getResourceAsStream(final Class<?> clazz, final String uri) {
    InputStream is = clazz.getResourceAsStream(uri);
    if (null == is) {
        is = ClassExtensions.getClassLoader().getResourceAsStream(uri);
    }
    return is;
}

---

From source file:GraphicsExample.java

static Image loadImage(Display display, Class clazz, String string) {
    InputStream stream = clazz.getResourceAsStream(string);
    if (stream == null)
        return null;
    Image image = null;/*from w  ww. j  ava2s .  co m*/
    try {
        image = new Image(display, stream);
    } catch (SWTException ex) {
    } finally {
        try {
            stream.close();
        } catch (IOException ex) {
        }
    }
    return image;
}

---

From source file:org.eclipse.sw360.datahandler.common.CommonUtils.java

public static Properties loadProperties(Class<?> clazz, String propertiesFilePath, boolean useSystemConfig) {
    Properties props = new Properties();

    try (InputStream resourceAsStream = clazz.getResourceAsStream(propertiesFilePath)) {
        if (resourceAsStream == null)
            throw new IOException("cannot open " + propertiesFilePath);

        props.load(resourceAsStream);//from w  w w .  j ava2  s .  c  om
    } catch (IOException e) {
        getLogger(clazz).error("Error opening resources " + propertiesFilePath + ".", e);
    }

    if (useSystemConfig) {
        File systemPropertiesFile = new File(SYSTEM_CONFIGURATION_PATH, propertiesFilePath);
        if (systemPropertiesFile.exists()) {
            try (InputStream resourceAsStream = new FileInputStream(systemPropertiesFile.getPath())) {
                if (resourceAsStream == null)
                    throw new IOException("cannot open " + systemPropertiesFile.getPath());

                props.load(resourceAsStream);
            } catch (IOException e) {
                getLogger(clazz).error("Error opening resources " + systemPropertiesFile.getPath() + ".", e);
            }
        }
    }
    return props;
}

---

From source file:com.tesora.dve.standalone.PETest.java

public static void populateSites(Class<?> testClass, Properties props, String prefix)
        throws PEException, SQLException {
    List<PersistentSite> allSites = getGlobalDAO().findAllPersistentSites();

    for (StorageSite site : allSites) {
        String sqlRes = prefix + site.getName() + "-load.sql";
        InputStream is = testClass.getResourceAsStream(sqlRes);
        if (is != null) {
            logger.info("Reading SQL statements from " + sqlRes);
            DBHelper dbh = new DBHelper(props).connect();
            try {
                dbh.executeFromStream(is);
                dbh.disconnect();/* w  w w  .  j a v a  2s . co  m*/

                is.close();
            } catch (IOException e) {
                // ignore
            } finally {
                dbh.disconnect();
            }
        }
    }
}

---

From source file:org.wurstworks.tools.pinto.AbstractPintoBean.java

public static Properties getPropertiesForClass(final Class<?> parent) {
    final String bundle = "/" + parent.getName().replace(".", "/") + ".properties";
    Properties properties = new Properties();
    try {/*from  www. j a va2  s  . c o  m*/
        properties.load(parent.getResourceAsStream(bundle));
    } catch (IOException e) {
        properties = null;
    }
    return properties;
}

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