Java Resource Path Get getResourceFile(Class clazz, String relPath)

Description

get Resource File

License

Open Source License

Declaration

static public File getResourceFile(Class clazz, String relPath)
            throws IOException, URISyntaxException 

Method Source Code

//package com.java2s;
/**//from  ww  w  .  j a va  2s .  c  o  m
 * Copyright (c) 2010- 2011 QUT (Brisbane, Australia) and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Jim Steel - initial API and implementation
 *    Joerg Kiegeland - extension for database storage 
 */

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URISyntaxException;

public class Main {
    static public File getResourceFile(Class clazz, String relPath)
            throws IOException, URISyntaxException {
        String uri = clazz.getResource(clazz.getSimpleName() + ".class")
                .toString();
        String result = clazz.getResource(clazz.getSimpleName() + ".class")
                .toURI().getPath();
        File file;
        if (result != null && result.indexOf("/bin/") != -1) {
            // standalone executed within Eclipse
            file = new File(result.substring(0, result.indexOf("/bin/"))
                    + relPath);
        } else if (uri.indexOf("!/") != 0 && uri.startsWith("jar:file:")) {
            relPath = relPath.replace("/bin/", "/");
            // standalone executed as jar
            uri = uri.substring("jar:file:".length());
            uri = uri.substring(0, uri.indexOf("!/"));
            uri = uri.substring(0, uri.lastIndexOf("/"));
            uri = uri + "/resources" + relPath;
            file = new File(uri);
            InputStream s = clazz.getResourceAsStream(relPath);
            if (s != null) {
                // create parent folders
                file.getParentFile().mkdirs();
                // extract from jar file to local file
                System.out.println("Extracting: " + relPath);
                streamToFile(file, s);
            } else
                System.out.println("Handle as new file: " + relPath);

        } else
            throw new RuntimeException("Cannot process relative path "
                    + relPath);
        System.out.println("getResourceFile(" + clazz.getSimpleName() + ","
                + relPath + ") = " + file.toString());
        return file;
    }

    private static void streamToFile(File file, InputStream in)
            throws IOException {
        OutputStream out = new FileOutputStream(file);

        // Copy the bits from instream to outstream
        byte[] buf = new byte[1024];
        int len;
        while ((len = in.read(buf)) > 0) {
            out.write(buf, 0, len);
        }
        in.close();
        out.close();
    }
}

Related

1. getResourceAsFile(Object relativeTo, String relativePath)
2. getResourceAsFile(String relativePath)
3. getResourceAsStream(final String path)
4. getResourceAsStream(String resourcePath, ClassLoader classLoader, Class clazz)
5. getResourceAsString(String path)
6. getResourceFile(final Class baseClass, final String path)
7. getResourceFile(String sResourcePath, Class cRefClass)
8. getResourceFilePath(String name)
9. getResourceFileRelativeToBase(final File baseDir, final String resourcePath)