Java Jar Manifest getManifestAttribute(String jarUrl, String attribute)

Description

Get an attribute value

License

Open Source License

Parameter

Parameter	Description
jarUrl	the jar file
attribute	the attribute to fetch

Return

the attribute value

Declaration

private static String getManifestAttribute(String jarUrl, String attribute) throws IOException 

Method Source Code

//package com.java2s;
/*/*from w w w .  j a va 2  s .c  o  m*/
 * Lucane - a collaborative platform
 * Copyright (C) 2004 Vincent Fiack <vfiack@mail15.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

import java.io.IOException;
import java.util.jar.Attributes;
import java.util.jar.JarFile;

public class Main {
    /**
     * Get an attribute value
     * 
     * @param jarUrl the jar file
     * @param attribute the attribute to fetch
     * @return the attribute value
     */
    private static String getManifestAttribute(String jarUrl, String attribute) throws IOException {
        JarFile jar = new JarFile(jarUrl);
        Attributes attr = jar.getManifest().getMainAttributes();
        String value = attr.getValue(attribute);

        jar.close();
        return value;
    }
}

Related

1. getManifest(String path)
2. getManifest(ZipFile zip)
3. getManifest(ZipFile zipFile)
4. getManifestAttribute(InputStream in, String attr)
5. getManifestAttribute(Manifest m)
6. getManifestAttributes(File jarFile)
7. getManifestEntryValue(IResource manifest, String entryKey)
8. getManifestFileLocation(String moduleDir)
9. getManifestHeaders(File aJarFile)