Java Jar Zip File addJars(File directory, boolean recursive)

Description

add Jars

License

Open Source License

Declaration

public static boolean addJars(File directory, boolean recursive)

Method Source Code


//package com.java2s;
/*//from  w  w  w .ja  v  a  2  s .  c  o m
 * Copyright (c) 2009
 *
 * This file is part of HibernateJConsole.
 *
 *     HibernateJConsole is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     HibernateJConsole is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with HibernateJConsole.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.io.File;
import java.io.FilenameFilter;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ArrayList;
import java.util.List;

public class Main {
    private static Method addURL;

    public static boolean addJars(File directory, boolean recursive) {
        return addJars(directory, recursive, null);
    }

    public static boolean addJars(File directory, boolean recursive, FilenameFilter filter) {
        File[] files = directory.isFile() ? new File[] { directory } : directory.listFiles(filter);
        return addJars(files, recursive);
    }

    public static boolean addJars(File[] file, boolean recursive) {
        return addJars(file, recursive, null);
    }

    public static boolean addJars(File[] file, boolean recursive, FilenameFilter filter) {
        if (file == null || file.length == 0)
            return false;
        List<URL> jars = new ArrayList<URL>(file.length);
        for (File f : file) {
            if (f.isDirectory()) {
                if (recursive)
                    addJars(f.listFiles(filter), recursive, filter);
                continue;
            }

            if (filter != null && !filter.accept(f.getParentFile(), f.getName()))
                continue;

            if (f.getName().toLowerCase().endsWith(".jar"))
                try {
                    jars.add(f.toURI().toURL());
                } catch (MalformedURLException e) {
                    e.printStackTrace();
                }
        }

        addURLs(jars);

        return !jars.isEmpty();
    }

    public static void addURLs(List<URL> urls) {
        URLClassLoader sysloader = (URLClassLoader) ClassLoader.getSystemClassLoader();
        try {
            for (URL url : urls) {
                addURL.invoke(sysloader, url);

                // Reconstruct classpath property
                if ("file".equals(url.getProtocol())) {
                    String cp = System.getProperty("java.class.path", "");
                    System.setProperty("java.class.path", ("".equals(cp) ? cp : cp + File.pathSeparatorChar)
                            + new File(url.toURI()).getCanonicalPath());
                }
            }
        } catch (Throwable t) {
            throw new RuntimeException("Error, could not add URL to system classloader", t);
        }
    }
}

Java Jar Zip File addJars(File directory, boolean recursive)

Description

License

Declaration

Method Source Code

Related