Example usage for java.net URLClassLoader getURLs

Introduction

In this page you can find the example usage for java.net URLClassLoader getURLs.

Prototype

public URL[] getURLs() 

Source Link

Document

Returns the search path of URLs for loading classes and resources.

Usage

From source file:com.clustercontrol.plugin.ClassUtils.java

/**
 * ??URLCLASSPATH??<br/>/*  www  .  jav a2 s.c  o m*/
 * @param ?URL
 * @throws IOException
 */
public static void addURL(URL u) throws IOException {
    URLClassLoader sysLoader = (URLClassLoader) ClassLoader.getSystemClassLoader();

    for (URL url : sysLoader.getURLs()) {
        if (url.toString().equals(u.toString())) {
            log.info("URL " + u + " is already in CLASSPATH");
            return;
        }
    }

    Class<URLClassLoader> sysClass = URLClassLoader.class;
    try {
        Method method = sysClass.getDeclaredMethod("addURL", new Class[] { URL.class });
        method.setAccessible(true);
        method.invoke(sysLoader, new Object[] { u });
    } catch (Throwable t) {
        log.warn(t.getMessage(), t);
        throw new IOException("could not add URL " + u + " to CLASSPATH");
    }
}

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From source file:com.streamsets.pipeline.stage.destination.mapreduce.MapreduceUtils.java

/**
 * Add jars whose names contain the given patterns to the job's classpath.
 *
 * Searches the {@link ClassLoader} - which must be an instance of {@link URLClassLoader} or an
 * {@link IllegalStateException} will be thrown - of the {@link MapreduceUtils} class itself for the jar matching
 * a pattern indicated each arguments.//from w ww .  ja v  a2  s  . co  m
 *
 * Each supplied jarPattern is treated as a case-insensitive substring for a full jar path.  This method expects
 * to find at least one jar matching each substring, or an {@link IllegalArgumentException} will be thrown.  If more
 * than one jar is matched, then the result will depend on the allowMultiple parameter - if true, then all will be
 * added, while if false, an {@link IllegalArgumentException} will be thrown.
 *
 * Care has <b>NOT</b> been taken to optimize the performance of this method; the runtime is M * N where M is the
 * number of entries on the classpath and N is the number of given jarPatterns.  It is assumed that this method
 * will be called infrequently and with relatively few jarPatterns.
 *
 * @param conf the Hadoop conf for the MapReduce job
 * @param allowMultiple whether multiple matching jars are allowed to be added for a single pattern
 * @param jarPatterns the patterns to search for within the classpath
 */
public static void addJarsToJob(Configuration conf, boolean allowMultiple, String... jarPatterns) {
    final ClassLoader loader = MapreduceUtils.class.getClassLoader();
    if (!(loader instanceof URLClassLoader)) {
        throw new IllegalStateException(String.format(
                "ClassLoader for %s is not an instance of URLClassLoader (it is %s), and thus this method cannot be used",
                MapreduceUtils.class.getCanonicalName(), loader.getClass().getCanonicalName()));
    }
    final URLClassLoader urlClassLoader = (URLClassLoader) loader;

    addJarsToJob(conf, allowMultiple, urlClassLoader.getURLs(), jarPatterns);
}

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From source file:com.katsu.dwm.reflection.JarUtils.java

public static File getRootApplicationContentPath() {
    URLClassLoader sysloader = (URLClassLoader) JarUtils.class.getClassLoader();
    URL[] urls = sysloader.getURLs();
    String classesPath = "WEB-INF/classes/";
    if (urls != null) {
        for (URL url : urls) {
            try {
                if (url.getPath().endsWith(classesPath)) {
                    return new File(url.toURI()).getParentFile().getParentFile();
                }//from w ww  . ja va  2 s.  co m
            } catch (Exception e) {
                logger.error(e);
            }
        }
    }
    return null;
}

---

From source file:com.katsu.dwm.reflection.JarUtils.java

/**
 * Retrieve all jar files in directoy/*from   www  . jav a  2s.c o m*/
 * @return array of jar {@link File Files}
 */
public static List<File> getJarFiles() {
    URLClassLoader sysloader = (URLClassLoader) JarUtils.class.getClassLoader();
    URL[] urls = sysloader.getURLs();
    List<File> result = new ArrayList<File>();
    if (urls != null) {
        for (URL url : urls) {
            try {
                logger.trace("URL detected: " + url);
                if (url.getPath().toLowerCase().endsWith(".jar")) {
                    result.add(new File(url.toURI()));
                }
            } catch (Exception e) {
                logger.error(e);
            }
        }
    }
    return result;
}

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From source file:org.usergrid.rest.AbstractRestTest.java

public static void dumpClasspath(ClassLoader loader) {
    System.out.println("Classloader " + loader + ":");

    if (loader instanceof URLClassLoader) {
        URLClassLoader ucl = (URLClassLoader) loader;
        System.out.println("\t" + Arrays.toString(ucl.getURLs()));
    } else {//from ww  w.j  a  v a2  s.co  m
        System.out.println("\t(cannot display components as not a URLClassLoader)");
    }

    if (loader.getParent() != null) {
        dumpClasspath(loader.getParent());
    }
}

---

From source file:jp.terasoluna.fw.batch.unit.util.ClassLoaderUtils.java

/**
 * <pre>/*from   ww  w . ja  v a  2s  . co  m*/
 * ??????url???????
 * ???????
 * 
 * ????
 * ????????????
 * {@link #resetClassLoader()}???????
 * </pre>
 * 
 * @param url ?
 */
public static void addClassPath(URL url) {
    Assert.notNull(url);
    ClassLoader cl = getClassLoader();

    URLClassLoader newCl = null;
    if (cl instanceof URLClassLoader) {
        @SuppressWarnings("resource")
        URLClassLoader ucl = (URLClassLoader) cl;
        newCl = new URLClassLoader(ucl.getURLs(), cl);
    } else {
        newCl = new URLClassLoader(null, cl);
    }

    Method method = getAddURLMethod();

    try {
        method.invoke(newCl, url);
    } catch (Exception e) {
        throw new UTRuntimeException(e);
    }

    previousClassLoader = cl;
    setClassLoader(newCl);
}

---

From source file:com.qwazr.compiler.JavaCompiler.java

private final static String buildClassPath(File[] classPathArray, Collection<URL> urlCollection)
        throws MalformedURLException, URISyntaxException {
    final List<String> classPathes = new ArrayList<>();

    URLClassLoader classLoader = (URLClassLoader) URLClassLoader.getSystemClassLoader();
    if (classLoader != null && classLoader.getURLs() != null) {
        for (URL url : classLoader.getURLs()) {
            String path = new File(url.toURI()).getAbsolutePath();
            classPathes.add(path);/*from ww w  .j  a  va2  s.  c om*/
            urlCollection.add(url);
        }
    }

    if (classPathArray != null) {
        for (File classPathFile : classPathArray) {
            if (classPathFile.isDirectory()) {
                for (File f : classPathFile.listFiles((FileFilter) FileFileFilter.FILE)) {
                    classPathes.add(f.getAbsolutePath());
                    urlCollection.add(f.toURI().toURL());
                }
            } else if (classPathFile.isFile()) {
                classPathes.add(classPathFile.getAbsolutePath());
                urlCollection.add(classPathFile.toURI().toURL());
            }
        }
    }
    if (classPathes.isEmpty())
        return null;
    return StringUtils.join(classPathes, File.pathSeparator);
}

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From source file:com.revolsys.util.JavaBeanUtil.java

public static boolean isDefinedInClassLoader(final ClassLoader classLoader, final URL resourceUrl) {
    if (classLoader instanceof URLClassLoader) {
        final String resourceUrlString = resourceUrl.toString();
        final URLClassLoader urlClassLoader = (URLClassLoader) classLoader;
        for (final URL url : urlClassLoader.getURLs()) {
            if (resourceUrlString.contains(url.toString())) {
                return true;
            }/*from   w w w.  ja  v a  2 s.  co  m*/
        }
        return false;
    } else {
        return true;
    }
}

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From source file:com.ibm.team.build.internal.hjplugin.RTCFacadeFactory.java

private static URL getHjplugin_rtcJar(ClassLoader originalClassLoader, String fullClassName,
        PrintStream debugLog) {/*from   w  w  w  .  j ava  2 s . co  m*/
    if (originalClassLoader instanceof URLClassLoader) {
        URLClassLoader urlClassLoader = (URLClassLoader) originalClassLoader;
        URL[] originalURLs = urlClassLoader.getURLs();
        for (URL url : originalURLs) {
            String file = url.getFile();
            if (file.contains("com.ibm.team.build.hjplugin-rtc")) { //$NON-NLS-1$ //$NON-NLS-2$
                debug(debugLog, "Found hjplugin-rtc jar " + url.getFile()); //$NON-NLS-1$
                return url;
            }
        }
        debug(debugLog, "Did not find hjplugin-rtc jar from URLClassLoader"); //$NON-NLS-1$
    }
    String realClassName = fullClassName.replace('.', '/') + ".class"; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
    URL url = originalClassLoader.getResource(realClassName);
    debug(debugLog, "Found " + realClassName + " in " + url.toString()); //$NON-NLS-1$ //$NON-NLS-2$
    try {
        URLConnection connection = url.openConnection();
        if (connection instanceof JarURLConnection) {
            JarURLConnection jarConnection = (JarURLConnection) connection;
            debug(debugLog, "hjplugin-rtc jar from the connection " + jarConnection.getJarFileURL()); //$NON-NLS-1$
            return jarConnection.getJarFileURL();
        }
    } catch (IOException e) {
        debug(debugLog, "Unable to obtain URLConnection ", e); //$NON-NLS-1$ 
    }
    debug(debugLog, "Unable to find hjplugin-rtc.jar"); //$NON-NLS-1$ 
    return null;
}

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From source file:com.googlecode.fightinglayoutbugs.FindBugsRunner.java

private static List<String> getClassPath(Class<?> suiteClass) {
    List<String> classPath = new ArrayList<String>();
    URLClassLoader classLoader = (URLClassLoader) suiteClass.getClassLoader();
    do {/*from www  .  jav  a  2  s . c  om*/
        for (URL url : classLoader.getURLs()) {
            final String temp = url.toString();
            if (temp.startsWith("file:")) {
                @SuppressWarnings("deprecation")
                String path = URLDecoder.decode(temp.substring("file:".length()));
                classPath.add(path);
            } else {
                throw new RuntimeException(
                        "Don't know how to convert class path URL '" + temp + "' into a path.");
            }
        }
        ClassLoader parentClassLoader = classLoader.getParent();
        classLoader = (parentClassLoader instanceof URLClassLoader && parentClassLoader != classLoader
                ? (URLClassLoader) parentClassLoader
                : null);
    } while (classLoader != null);
    return classPath;
}

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