Copy resources from Classpath into a temporary directory

CopyResourcesFromClassPathToFilesystemDirectory.java

import java.io.File;
import java.io.IOException;
import java.net.URL;

import org.apache.commons.io.FileUtils;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.core.io.support.ResourcePatternResolver;


File directory = new File(System.getProperty("java.io.tmpdir"), "MifosBirtFilesExtractedFromClasspath");
directory.mkdirs();
FileUtils.cleanDirectory(directory);

        ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
        Resource[] resources = resolver.getResources(ResourcePatternResolver.CLASSPATH_ALL_URL_PREFIX + BIRT_RESOURCES_PATTERN + "**");
        for (Resource resource : resources) {
            if (resource.exists() & resource.isReadable() && resource.contentLength() > 0) {
                URL url = resource.getURL();
                String urlString = url.toExternalForm();
                String targetName = urlString.substring(urlString.indexOf(directoryToScan));
                File destination = new File(rootDirectory, targetName);
                FileUtils.copyURLToFile(url, destination);
                LOGGER.info("Copied " + url + " to " + destination.getAbsolutePath());
            } else {
                LOGGER.debug("Did not copy, seems to be directory: " + resource.getDescription());
            }
        }