Example usage for java.util.jar JarFile entries

Introduction

In this page you can find the example usage for java.util.jar JarFile entries.

Prototype

public Enumeration<JarEntry> entries() 

Source Link

Document

Returns an enumeration of the jar file entries.

Usage

From source file:Main.java

public static List<Class<?>> getClassesForPackage(final String iPackageName, final ClassLoader iClassLoader)
        throws ClassNotFoundException {
    // This will hold a list of directories matching the pckgname.
    // There may be more than one if a package is split over multiple jars/paths
    List<Class<?>> classes = new ArrayList<Class<?>>();
    ArrayList<File> directories = new ArrayList<File>();
    try {/*from  www  . j a v a2  s. c  o  m*/
        // Ask for all resources for the path
        final String packageUrl = iPackageName.replace('.', '/');
        Enumeration<URL> resources = iClassLoader.getResources(packageUrl);
        if (!resources.hasMoreElements()) {
            resources = iClassLoader.getResources(packageUrl + CLASS_EXTENSION);
            if (resources.hasMoreElements()) {
                throw new IllegalArgumentException(
                        iPackageName + " does not appear to be a valid package but a class");
            }
        } else {
            while (resources.hasMoreElements()) {
                URL res = resources.nextElement();
                if (res.getProtocol().equalsIgnoreCase("jar")) {
                    JarURLConnection conn = (JarURLConnection) res.openConnection();
                    JarFile jar = conn.getJarFile();
                    for (JarEntry e : Collections.list(jar.entries())) {

                        if (e.getName().startsWith(iPackageName.replace('.', '/'))
                                && e.getName().endsWith(CLASS_EXTENSION) && !e.getName().contains("$")) {
                            String className = e.getName().replace("/", ".").substring(0,
                                    e.getName().length() - 6);
                            classes.add(Class.forName(className));
                        }
                    }
                } else
                    directories.add(new File(URLDecoder.decode(res.getPath(), "UTF-8")));
            }
        }
    } catch (NullPointerException x) {
        throw new ClassNotFoundException(
                iPackageName + " does not appear to be " + "a valid package (Null pointer exception)");
    } catch (UnsupportedEncodingException encex) {
        throw new ClassNotFoundException(
                iPackageName + " does not appear to be " + "a valid package (Unsupported encoding)");
    } catch (IOException ioex) {
        throw new ClassNotFoundException(
                "IOException was thrown when trying " + "to get all resources for " + iPackageName);
    }

    // For every directory identified capture all the .class files
    for (File directory : directories) {
        if (directory.exists()) {
            // Get the list of the files contained in the package
            File[] files = directory.listFiles();
            for (File file : files) {
                if (file.isDirectory()) {
                    classes.addAll(findClasses(file, iPackageName));
                } else {
                    String className;
                    if (file.getName().endsWith(CLASS_EXTENSION)) {
                        className = file.getName().substring(0,
                                file.getName().length() - CLASS_EXTENSION.length());
                        classes.add(Class.forName(iPackageName + '.' + className));
                    }
                }
            }
        } else {
            throw new ClassNotFoundException(
                    iPackageName + " (" + directory.getPath() + ") does not appear to be a valid package");
        }
    }
    return classes;
}

---

From source file:org.lockss.test.ClassPathUtil.java

private static void processJar(File file) {
    try {//w ww.j av  a 2 s  .  co m
        JarFile jf = new JarFile(file);
        for (Enumeration en = jf.entries(); en.hasMoreElements();) {
            ZipEntry ent = (ZipEntry) en.nextElement();
            if (ent.isDirectory()) {
                continue;
            }
            m_map.put(ent.getName(), file);
        }
    } catch (IOException e) {
        log.warning("reading jar " + file, e);
    }
}

---

From source file:org.wso2.carbon.ui.Utils.java

/**
 * For a given Zip file, process each entry.
 *
 * @param zipFileLocation zipFileLocation
 * @param targetLocation  targetLocation
 * @throws org.wso2.carbon.core.CarbonException
 *          CarbonException//ww  w  . j  a  v a  2  s. c  o  m
 */
public static void deployZipFile(File zipFileLocation, File targetLocation) throws CarbonException {
    try {
        SortedSet<String> dirsMade = new TreeSet<String>();
        JarFile jarFile = new JarFile(zipFileLocation);
        Enumeration all = jarFile.entries();
        while (all.hasMoreElements()) {
            getFile((ZipEntry) all.nextElement(), jarFile, targetLocation, dirsMade);
        }
    } catch (IOException e) {
        log.error("Error while copying component", e);
        throw new CarbonException(e);
    }
}

---

From source file:org.phenotips.variantstore.shared.ResourceManager.java

/**
 * Copy resources recursively from a folder specified by source in a jar file specified by jarPath
 * to a destination folder on the filesystem dest.
 *
 * @param jarPath the jar file//w  w  w  .j av  a 2  s .c  om
 * @param source  the folder on the filesystem
 * @param dest    the destination
 * @throws IOException
 */
private static void copyResourcesFromJar(Path jarPath, Path source, Path dest) throws IOException {
    JarFile jar = new JarFile(jarPath.toFile());

    for (JarEntry entry : Collections.list(jar.entries())) {

        if (entry.getName().startsWith(source.toString())) {
            if (entry.isDirectory()) {
                Files.createDirectory(dest.resolve(entry.getName()));
            } else {
                Files.copy(jar.getInputStream(entry), dest.resolve(entry.getName()));
            }
        }

    }
}

---

From source file:com.aliyun.odps.local.common.utils.ArchiveUtils.java

@SuppressWarnings("rawtypes")
public static void unJar(File jarFile, File toDir) throws IOException {
    JarFile jar = new JarFile(jarFile);
    try {//from w  w  w  .j  ava 2  s  . co  m
        Enumeration entries = jar.entries();
        while (entries.hasMoreElements()) {
            JarEntry entry = (JarEntry) entries.nextElement();
            if (!entry.isDirectory()) {
                InputStream in = jar.getInputStream(entry);
                try {
                    File file = new File(toDir, entry.getName());
                    if (!file.getParentFile().mkdirs()) {
                        if (!file.getParentFile().isDirectory()) {
                            throw new IOException("Mkdirs failed to create " + file.getParentFile().toString());
                        }
                    }
                    OutputStream out = new FileOutputStream(file);
                    try {
                        byte[] buffer = new byte[8192];
                        int i;
                        while ((i = in.read(buffer)) != -1) {
                            out.write(buffer, 0, i);
                        }
                    } finally {
                        out.close();
                    }
                } finally {
                    in.close();
                }
            }
        }
    } finally {
        jar.close();
    }
}

---

From source file:org.shept.util.JarUtils.java

/**
 * Copy resources from a classPath, typically within a jar file 
 * to a specified destination, typically a resource directory in
 * the projects webApp directory (images, sounds, e.t.c. )
 * /*from  w  w  w .jav a2 s.c  o m*/
 * Copies resources only if the destination file does not exist and
 * the specified resource is available.
 * 
 * The ClassPathResource will be scanned for all resources in the path specified by the resource.
 * For example  a path like:
 *    new ClassPathResource("resource/images/pager/", SheptBaseController.class);
 * takes all the resources in the path 'resource/images/pager' (but not in sub-path)
 * from the specified clazz 'SheptBaseController'
 * 
 * @param cpr ClassPathResource specifying the source location on the classPath (maybe within a jar)
 * @param webAppDestPath Full path String to the fileSystem destination directory   
 * @throws IOException when copying on copy error
 * @throws URISyntaxException 
 */
public static void copyResources(ClassPathResource cpr, String webAppDestPath)
        throws IOException, URISyntaxException {
    String dstPath = webAppDestPath; //  + "/" + jarPathInternal(cpr.getURL());
    File dir = new File(dstPath);
    dir.mkdirs();

    URL url = cpr.getURL();
    // jarUrl is the URL of the containing lib, e.g. shept.org in this case
    URL jarUrl = ResourceUtils.extractJarFileURL(url);
    String urlFile = url.getFile();
    String resPath = "";
    int separatorIndex = urlFile.indexOf(ResourceUtils.JAR_URL_SEPARATOR);
    if (separatorIndex != -1) {
        // just copy the the location path inside the jar without leading separators !/
        resPath = urlFile.substring(separatorIndex + ResourceUtils.JAR_URL_SEPARATOR.length());
    } else {
        return; // no resource within jar to copy
    }

    File f = new File(ResourceUtils.toURI(jarUrl));
    JarFile jf = new JarFile(f);

    Enumeration<JarEntry> entries = jf.entries();
    while (entries.hasMoreElements()) {
        JarEntry entry = entries.nextElement();
        String path = entry.getName();
        if (path.startsWith(resPath) && entry.getSize() > 0) {
            String fileName = path.substring(path.lastIndexOf("/"));
            File dstFile = new File(dstPath, fileName); //  (StringUtils.applyRelativePath(dstPath, fileName));
            Resource fileRes = cpr.createRelative(fileName);
            if (!dstFile.exists() && fileRes.exists()) {
                FileOutputStream fos = new FileOutputStream(dstFile);
                FileCopyUtils.copy(fileRes.getInputStream(), fos);
                logger.info("Successfully copied file " + fileName + " from " + cpr.getPath() + " to "
                        + dstFile.getPath());
            }
        }
    }

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

}

---

From source file:uk.co.danielrendall.imagetiler.utils.PackageFinder.java

private static List<Class> findClassesInJar(URI uriOfJar, String pathInJar, String packageName)
        throws ClassNotFoundException {
    if (pathInJar.startsWith("/"))
        pathInJar = pathInJar.substring(1);
    if (!pathInJar.endsWith("/"))
        pathInJar = pathInJar + "/";
    List<Class> classes = new ArrayList<Class>();
    File theFile = new File(uriOfJar);
    if (!theFile.isFile()) {
        return classes;
    }/*w  ww  . j a va  2s.  com*/
    try {
        JarFile jarFile = new JarFile(theFile);
        for (Enumeration<JarEntry> entries = jarFile.entries(); entries.hasMoreElements();) {
            JarEntry entry = entries.nextElement();
            String name = entry.getName();
            if (name.startsWith(pathInJar) && name.endsWith(".class")) {
                Log.app.debug("Found entry: " + entry.getName());
                String className = name.replaceAll("/", ".").substring(0, name.length() - 6);
                classes.add(Class.forName(className));
            }
        }
    } catch (IOException e) {
        Log.app.warn("Couldn't open jar file " + uriOfJar + " - " + e.getMessage());
    }
    return classes;
}

---

From source file:com.baomidou.framework.common.JarHelper.java

public static List<String> listFiles(JarFile jarFile, String endsWith) {
    if (jarFile == null || StringUtils.isEmpty(endsWith)) {
        return null;
    }/*from  w w  w.j  av a  2 s  . c o m*/
    List<String> files = new ArrayList<String>();
    Enumeration<JarEntry> entries = jarFile.entries();
    while (entries.hasMoreElements()) {
        JarEntry entry = entries.nextElement();
        String name = entry.getName();
        if (name.endsWith(endsWith)) {
            files.add(name);
        }
    }
    return files;
}

---

From source file:com.canoo.webtest.util.WebtestEmbeddingUtil.java

/**
 * Copies WebTest resources (ie webtest.xml, tools/*, the XSLs, CSSs and pictures, ...) package in WebTest jar file
 * into the provide folder. Indeed different Ant tasks can't work with resources in a jar file.
 * @param targetFolder the folder in which resources should be copied to
 * @throws java.io.IOException if the resources can be accessed or copied
 *///w w w .  j a v  a2  s  .  co  m
static void copyWebTestResources(final File targetFolder) throws IOException {
    final String resourcesPrefix = "com/canoo/webtest/resources/";
    final URL webtestXmlUrl = WebtestEmbeddingUtil.class.getClassLoader()
            .getResource(resourcesPrefix + "webtest.xml");

    if (webtestXmlUrl == null) {
        throw new IllegalStateException("Can't find resource " + resourcesPrefix + "webtest.xml");
    } else if (webtestXmlUrl.toString().startsWith("jar:file")) {
        final String urlJarFileName = webtestXmlUrl.toString().replaceFirst("^jar:file:([^\\!]*).*$", "$1");
        final String jarFileName = URLDecoder.decode(urlJarFileName, Charset.defaultCharset().name());
        final JarFile jarFile = new JarFile(jarFileName);
        final String urlPrefix = StringUtils.removeEnd(webtestXmlUrl.toString(), "webtest.xml");

        for (final Enumeration<JarEntry> entries = jarFile.entries(); entries.hasMoreElements();) {
            final JarEntry jarEntry = entries.nextElement();
            if (jarEntry.getName().startsWith(resourcesPrefix)) {
                final String relativeName = StringUtils.removeStart(jarEntry.getName(), resourcesPrefix);
                final URL url = new URL(urlPrefix + relativeName);
                final File targetFile = new File(targetFolder, relativeName);
                FileUtils.forceMkdir(targetFile.getParentFile());
                FileUtils.copyURLToFile(url, targetFile);
            }
        }
    } else if (webtestXmlUrl.toString().startsWith("file:")) {
        // we're probably developing and/or have a custom version of the resources in classpath
        final File webtestXmlFile = FileUtils.toFile(webtestXmlUrl);
        final File resourceFolder = webtestXmlFile.getParentFile();

        FileUtils.copyDirectory(resourceFolder, targetFolder);
    } else {
        throw new IllegalStateException(
                "Resource " + resourcesPrefix + "webtest.xml is not in a jar file: " + webtestXmlUrl);
    }
}

---

From source file:com.wordnik.swagger.codegen.util.FileUtil.java

public static boolean copyJarResourcesRecursively(final File destDir, final JarURLConnection jarConnection)
        throws IOException {

    final JarFile jarFile = jarConnection.getJarFile();

    for (final Enumeration<JarEntry> e = jarFile.entries(); e.hasMoreElements();) {
        final JarEntry entry = e.nextElement();
        if (entry.getName().startsWith(jarConnection.getEntryName())) {
            final String filename = StringUtils.removeStart(entry.getName(), //
                    jarConnection.getEntryName());

            final File f = new File(destDir, filename);
            if (!entry.isDirectory()) {
                final InputStream entryInputStream = jarFile.getInputStream(entry);
                if (!FileUtil.copyStream(entryInputStream, f)) {
                    return false;
                }/*from w  ww. ja v  a2 s .c om*/
                entryInputStream.close();
            } else {
                if (!FileUtil.ensureDirectoryExists(f)) {
                    throw new IOException("Could not create directory: " + f.getAbsolutePath());
                }
            }
        }
    }
    return true;
}

---

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