Example usage for java.lang ClassLoader getResourceAsStream

Introduction

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

Prototype

public InputStream getResourceAsStream(String name) 

Source Link

Document

Returns an input stream for reading the specified resource.

Usage

From source file:org.apache.roller.weblogger.business.jpa.JPAPersistenceStrategy.java

/**
 * Loads properties from given resourceName using given class loader
 * @param resourceName The name of the resource containing properties
 * @param cl Classloeder to be used to locate the resouce
 * @return A properties object/*from ww w . ja  va  2  s  .  c  o m*/
 * @throws WebloggerException
 */
private static Properties loadPropertiesFromResourceName(String resourceName, ClassLoader cl)
        throws WebloggerException {
    Properties props = new Properties();
    InputStream in;
    in = cl.getResourceAsStream(resourceName);
    if (in == null) {
        //TODO: Check how i18n is done in roller
        throw new WebloggerException("Could not locate properties to load " + resourceName);
    }
    try {
        props.load(in);
    } catch (IOException ioe) {
        throw new WebloggerException("Could not load properties from " + resourceName);
    } finally {
        try {
            in.close();
        } catch (IOException ioe) {
        }
    }

    return props;
}

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From source file:WarUtil.java

/**
 * ?????????????????//from w  ww .  j ava2  s.  c o m
 * 
 * @param path
 * @param caller
 * @return
 */
public static InputStream getResourceAsStream(String path, Class<?> caller) {

    String resource = path;
    if (resource.startsWith(SLASH)) {
        resource = resource.substring(1);
    }

    InputStream is = null;
    File file = new File(path);
    if (file.exists() && file.isFile()) {
        try {
            is = new FileInputStream(file);
        } catch (FileNotFoundException e) {
        }
    }
    if (is == null) {
        ClassLoader tcl = Thread.currentThread().getContextClassLoader();
        if (tcl != null) {
            is = tcl.getResourceAsStream(resource);
        }
    }
    if (is == null) {
        is = caller.getResourceAsStream(path);
    }
    if (is == null) {
        is = ClassLoader.class.getResourceAsStream(path);
    }
    if (is == null) {
        is = ClassLoader.getSystemResourceAsStream(resource);
    }

    return is;
}

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From source file:org.apache.fop.hyphenation.Hyphenator.java

private static InputStream getResourceStream(String key) {
    InputStream is = null;//  ww w . j a v  a2 s. com
    // Try to use Context Class Loader to load the properties file.
    try {
        java.lang.reflect.Method getCCL = Thread.class.getMethod("getContextClassLoader", new Class[0]);
        if (getCCL != null) {
            ClassLoader contextClassLoader = (ClassLoader) getCCL.invoke(Thread.currentThread(), new Object[0]);
            is = contextClassLoader.getResourceAsStream("hyph/" + key + ".hyp");
        }
    } catch (Exception e) {
        //ignore, fallback further down
    }

    if (is == null) {
        is = Hyphenator.class.getResourceAsStream("/hyph/" + key + ".hyp");
    }

    return is;
}

---

From source file:org.apache.roller.planet.business.jpa.JPAPersistenceStrategy.java

/**
 * Loads properties from given resourceName using given class loader
 * @param resourceName The name of the resource containing properties
 * @param cl Classloeder to be used to locate the resouce
 * @return A properties object//from  w  ww  . j  a v  a2s  .  c om
 * @throws PlanetException
 */
protected static Properties loadPropertiesFromResourceName(String resourceName, ClassLoader cl)
        throws PlanetException {
    Properties props = new Properties();
    InputStream in = null;
    in = cl.getResourceAsStream(resourceName);
    if (in == null) {
        //TODO: Check how i18n is done in roller
        throw new PlanetException("Could not locate properties to load " + resourceName);
    }
    try {
        props.load(in);
    } catch (IOException ioe) {
        throw new PlanetException("Could not load properties from " + resourceName);
    } finally {
        if (in != null) {
            try {
                in.close();
            } catch (IOException ioe) {
            }
        }
    }

    return props;
}

---

From source file:org.apache.bval.jsr.xml.ValidationParser.java

protected static InputStream getInputStream(final String path) throws IOException {
    final ClassLoader loader = Reflection.getClassLoader(ValidationParser.class);
    final InputStream inputStream = loader.getResourceAsStream(path);

    if (inputStream != null) {
        // spec says: If more than one META-INF/validation.xml file
        // is found in the classpath, a ValidationException is raised.
        final Enumeration<URL> urls = loader.getResources(path);
        if (urls.hasMoreElements()) {
            final String url = urls.nextElement().toString();
            while (urls.hasMoreElements()) {
                if (!url.equals(urls.nextElement().toString())) { // complain when first duplicate found
                    throw new ValidationException("More than one " + path + " is found in the classpath");
                }// w w  w  . java2  s  . c om
            }
        }
    }

    return IOs.convertToMarkableInputStream(inputStream);
}

---

From source file:be.fedict.eid.applet.service.signer.time.TSPTimeStampService.java

private static X509Certificate loadCertificate(String resourceName) {
    LOG.debug("loading certificate: " + resourceName);
    Thread currentThread = Thread.currentThread();
    ClassLoader classLoader = currentThread.getContextClassLoader();
    InputStream certificateInputStream = classLoader.getResourceAsStream(resourceName);
    if (null == certificateInputStream) {
        throw new IllegalArgumentException("resource not found: " + resourceName);
    }/*from w  ww.  j  a  va2 s. c  o  m*/
    try {
        CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
        return (X509Certificate) certificateFactory.generateCertificate(certificateInputStream);
    } catch (CertificateException e) {
        throw new RuntimeException("X509 error: " + e.getMessage(), e);
    }
}

---

From source file:com.knockturnmc.api.util.ConfigurationUtils.java

/**
 * Loads a plain file./*from w ww .  j  a v a  2 s  . c  om*/
 * If the desired file is not found, a file with the same name will be copied from the classpath to the datafolder.
 * If no default file was found in the classloader's classpath, an empty file will be created.
 *
 * @param classLoader the classloader to use for the default file
 * @param file        the filename to create/load
 * @param datafolder  the datafolder to use
 * @return the loaded/created file
 * @throws IOException if something went wrong
 */
public static File getConfigFile(ClassLoader classLoader, String file, File datafolder) throws IOException {
    File config = new File(datafolder, file);
    datafolder.mkdirs();
    if (!config.exists()) {
        logger.info("No configuration file found. Copying default configuration...");
        try (InputStream in = classLoader.getResourceAsStream(file)) {
            if (in != null) {
                if (!config.createNewFile()) {
                    logger.error("Failed creating default file.");
                    throw new RuntimeException("Failed to create default file");
                }
                try (OutputStream out = new FileOutputStream(config)) {
                    IOUtils.copy(in, out);
                    out.flush();
                }
            } else {
                config.createNewFile();
            }
        }
    }
    return config;
}

---

From source file:org.apache.synapse.transport.amqp.AMQPTransportUtils.java

private static Properties loadProperties(String filePath) {
    Properties properties = new Properties();
    ClassLoader cl = Thread.currentThread().getContextClassLoader();

    if (log.isDebugEnabled()) {
        log.debug("Loading a file '" + filePath + "' from classpath");
    }//from w  w w. j a va  2s.c  o  m

    InputStream in = cl.getResourceAsStream(filePath);
    if (in == null) {
        if (log.isDebugEnabled()) {
            log.debug("Unable to load file  ' " + filePath + " '");
        }

        filePath = "repository/conf" + File.separatorChar + filePath;
        if (log.isDebugEnabled()) {
            log.debug("Loading a file '" + filePath + "' from classpath");
        }

        in = cl.getResourceAsStream(filePath);
        if (in == null) {
            if (log.isDebugEnabled()) {
                log.debug("Unable to load file  ' " + filePath + " '");
            }
        }
    }
    if (in != null) {
        try {
            properties.load(in);
        } catch (IOException e) {
            String msg = "Error loading properties from a file at :" + filePath;
            log.error(msg, e);
        }
    }
    return properties;
}

---

From source file:com.flozano.socialauth.AuthProviderFactory.java

private static AuthProvider getProvider(final String id, final String fileName, final ClassLoader classLoader)
        throws Exception {
    Properties props = new Properties();
    AuthProvider provider;/*from  ww  w. ja va2 s.  c  om*/
    ClassLoader loader = null;
    if (classLoader != null) {
        loader = classLoader;
    } else {
        loader = AuthProviderFactory.class.getClassLoader();
    }
    try {
        InputStream in = loader.getResourceAsStream(fileName);
        props.load(in);
        for (Object key : props.keySet()) {
            String str = key.toString();
            if (str.startsWith("socialauth.")) {
                String val = str.substring("socialauth.".length());
                registerProvider(val, Class.forName(props.get(str).toString()));
            }
        }
    } catch (NullPointerException ne) {
        throw new FileNotFoundException(fileName + " file is not found in your class path");
    } catch (IOException ie) {
        throw new IOException("Could not load configuration from " + fileName);
    }

    provider = loadProvider(id, props);
    return provider;
}

---

From source file:nl.ru.cmbi.vase.tools.util.ToolBox.java

static public List<String> getInsideContents(String fileName) {
    ClassLoader loader = ToolBox.class.getClassLoader();
    InputStream stream = loader.getResourceAsStream(fileName);

    if (stream == null) {
        loader = ClassLoader.getSystemClassLoader();
        stream = loader.getResourceAsStream(fileName);
    }//  w w  w  .  j a  v  a2s .  c o m
    // stream = loader.getResourceAsStream("spring.xml");
    StringBuffer contents = new StringBuffer();
    List<String> lines = new ArrayList<String>();
    BufferedReader input = null;
    try {
        input = new BufferedReader(new InputStreamReader(stream));
        String line = null; // not declared within while loop
        while ((line = input.readLine()) != null) {
            lines.add(line);
            contents.append(line);
            contents.append(System.getProperty("line.separator"));
        }
    } catch (Exception e) {
        LOG.fatal(e);
    } finally {
        try {
            if (input != null) {
                input.close();
            }
        } catch (Exception e) {
            LOG.warn(e);
        }
    }
    return lines;
}

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