Java Jar File Find findContainingJar(ClassLoader classLoader, String resourceName)

Description

find Containing Jar

License

Apache License

Declaration

static public File findContainingJar(ClassLoader classLoader, String resourceName) 

Method Source Code

//package com.java2s;
/*/*  www. j  a  v  a 2 s  .  co m*/
 * Copyright 2015 Fizzed, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.File;

import java.net.MalformedURLException;

import java.net.URISyntaxException;
import java.net.URL;

public class Main {
    static public File findContainingJar(ClassLoader classLoader, String resourceName) {
        File jarFile;
        URL url = Thread.currentThread().getContextClassLoader().getResource(resourceName);

        if ("jar".equals(url.getProtocol())) { //NOI18N

            String path = url.getPath();
            int index = path.indexOf("!/"); //NOI18N

            if (index >= 0) {
                try {
                    String jarPath = path.substring(0, index);
                    if (jarPath.contains("file://") && !jarPath.contains("file:////")) { //NOI18N
                        /* Replace because JDK application classloader wrongly recognizes UNC paths. */
                        jarPath = jarPath.replaceFirst("file://", "file:////"); //NOI18N
                    }
                    url = new URL(jarPath);

                } catch (MalformedURLException mue) {
                    throw new RuntimeException(mue);
                }
            }
        }
        try {
            jarFile = new File(url.toURI());
        } catch (URISyntaxException ex) {
            throw new RuntimeException(ex);
        }
        assert jarFile.exists();
        return jarFile;
    }
}

Related

1. findContainingJar( @SuppressWarnings("rawtypes") Class my_class, ClassLoader loader)
2. findContainingJar(Class my_class)
3. findContainingJar(Class clazz)
4. findContainingJar(Class clazz)
5. findContainingJar(Class myClass, Map packagedClasses)
6. findJar(Class klass)
7. findJar(Class my_class)
8. findJar(File dir)
9. findJar(String nameRegexp)