Example usage for java.util.jar JarOutputStream putNextEntry

List of usage examples for java.util.jar JarOutputStream putNextEntry

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Introduction

In this page you can find the example usage for java.util.jar JarOutputStream putNextEntry.

Prototype

public void putNextEntry(ZipEntry ze) throws IOException

Source Link

Document

Begins writing a new JAR file entry and positions the stream to the start of the entry data.

Usage

From source file:gov.redhawk.rap.internal.PluginProviderServlet.java

private void addFiles(final JarOutputStream out, final IPath path, final File... listFiles) throws IOException {
    for (final File f : listFiles) {
        if (f.getName().charAt(0) == '.') {
            continue;
        } else if (f.getName().equals("MANIFEST.MF")) {
            continue;
        }//  w w w. j a  v  a2s .c  o m
        final IPath filePath = path.append(f.getName());
        String str = filePath.toString();
        if (str.startsWith("/")) {
            str = str.substring(1);
        }
        if (f.isDirectory()) {
            if (!str.endsWith("/")) {
                str = str + "/";
            }
            final JarEntry entry = new JarEntry(str);
            entry.setSize(0);
            entry.setTime(f.lastModified());
            out.putNextEntry(entry);
            out.closeEntry();
            addFiles(out, filePath, f.listFiles());
        } else {
            final JarEntry entry = new JarEntry(str);
            entry.setSize(f.length());
            entry.setTime(f.lastModified());
            out.putNextEntry(entry);
            final FileInputStream istream = new FileInputStream(f);
            try {
                IOUtils.copy(istream, out);
            } finally {
                istream.close();
            }
            out.closeEntry();
        }
    }
}

From source file:com.tasktop.c2c.server.jenkins.configuration.service.JenkinsServiceConfiguratorTest.java

@Test
public void testUpdateZipfile() throws Exception {

    // First, set up our zipfile test.

    // Create a manifest with a random header so that we can ensure it's preserved by the configurator.
    Manifest mf = new Manifest();
    Attributes.Name mfTestHeader = Attributes.Name.IMPLEMENTATION_VENDOR;
    String mfTestValue = "someCrazyValue";
    mf.getMainAttributes().put(mfTestHeader, mfTestValue);

    // Why do you need to add this header? See http://tech.puredanger.com/2008/01/07/jar-manifest-api/ - if you
    // don't add it, your manifest will be blank.
    mf.getMainAttributes().put(Attributes.Name.MANIFEST_VERSION, "1.0");
    assertEquals(mfTestValue, mf.getMainAttributes().getValue(mfTestHeader));

    File testWar = File.createTempFile("JenkinsServiceConfiguratorTest", ".war");
    configurator.setWarTemplateFile(testWar.getAbsolutePath());

    try {/*from  w ww.  j  a v a 2 s. c o  m*/
        JarOutputStream jarOutStream = new JarOutputStream(new FileOutputStream(testWar), mf);

        String specialFileName = "foo/bar.xml";
        String fileContents = "This is a file within our JAR file - it contains an <env-entry-value></env-entry-value> which should be filled by the configurator only if this is the 'special' file.";

        // Make our configurator replace this file within the JAR.
        configurator.setWebXmlFilename(specialFileName);

        // Create several random files in the zip.
        for (int i = 0; i < 10; i++) {
            JarEntry curEntry = new JarEntry("folder/file" + i);
            jarOutStream.putNextEntry(curEntry);
            IOUtils.write(fileContents, jarOutStream);
        }

        // Push in our special file now.
        JarEntry specialEntry = new JarEntry(specialFileName);
        jarOutStream.putNextEntry(specialEntry);
        IOUtils.write(fileContents, jarOutStream);

        // Close the output stream now, time to do the test.
        jarOutStream.close();

        // Configure this configurator with appropriate folders for testing.
        String expectedHomeDir = "/some/silly/random/homeDir";
        String webappsTarget = FileUtils.getTempDirectoryPath() + "/webapps/";
        File webappsTargetDir = new File(webappsTarget);
        if (webappsTargetDir.exists()) {
            FileUtils.deleteDirectory(webappsTargetDir);
        }
        String expectedDestFile = webappsTarget + "s#test#jenkins.war";
        configurator.setTargetJenkinsHomeBaseDir(expectedHomeDir);
        configurator.setTargetWebappsDir(webappsTarget);
        configurator.setJenkinsPath("/s/");
        ProjectServiceConfiguration config = new ProjectServiceConfiguration();
        config.setProjectIdentifier("test123");

        Map<String, String> m = new HashMap<String, String>();
        m.put(ProjectServiceConfiguration.PROJECT_ID, "test");
        m.put(ProjectServiceConfiguration.PROFILE_BASE_URL, "https://qcode.cloudfoundry.com");
        config.setProperties(m);
        config.setProjectIdentifier("test");

        // Now, run it against our test setup
        configurator.configure(config);

        // Confirm that the zipfile was updates as expected.
        File configuredWar = new File(expectedDestFile);
        assertTrue(configuredWar.exists());

        try {
            JarFile configuredWarJar = new JarFile(configuredWar);
            Manifest extractedMF = configuredWarJar.getManifest();
            assertEquals(mfTestValue, extractedMF.getMainAttributes().getValue(mfTestHeader));

            // Make sure all of our entries are present, and contain the data we expected.
            JarEntry curEntry = null;
            Enumeration<JarEntry> entries = configuredWarJar.entries();
            while (entries.hasMoreElements()) {
                curEntry = entries.nextElement();

                // If this is the manifest, skip it.
                if (curEntry.getName().equals("META-INF/MANIFEST.MF")) {
                    continue;
                }

                String entryContents = IOUtils.toString(configuredWarJar.getInputStream(curEntry));

                if (curEntry.getName().equals(specialFileName)) {
                    assertFalse(fileContents.equals(entryContents));
                    assertTrue(entryContents.contains(expectedHomeDir));
                } else {
                    // Make sure our content was unchanged.
                    assertEquals(fileContents, entryContents);
                    assertFalse(entryContents.contains(expectedHomeDir));
                }
            }
        } finally {
            // Clean up our test file.
            configuredWar.delete();
        }
    } finally {
        // Clean up our test file.
        testWar.delete();
    }
}

From source file:com.tasktop.c2c.server.hudson.configuration.service.HudsonServiceConfiguratorTest.java

@Test
public void testUpdateZipfile() throws Exception {

    // First, set up our zipfile test.

    // Create a manifest with a random header so that we can ensure it's preserved by the configurator.
    Manifest mf = new Manifest();
    Attributes.Name mfTestHeader = Attributes.Name.IMPLEMENTATION_VENDOR;
    String mfTestValue = "someCrazyValue";
    mf.getMainAttributes().put(mfTestHeader, mfTestValue);

    // Why do you need to add this header? See http://tech.puredanger.com/2008/01/07/jar-manifest-api/ - if you
    // don't add it, your manifest will be blank.
    mf.getMainAttributes().put(Attributes.Name.MANIFEST_VERSION, "1.0");
    assertEquals(mfTestValue, mf.getMainAttributes().getValue(mfTestHeader));

    File testWar = File.createTempFile("HudsonServiceConfiguratorTest", ".war");
    configurator.setWarTemplateFile(testWar.getAbsolutePath());

    try {//from   w w  w.j  a  va 2 s  .  com
        JarOutputStream jarOutStream = new JarOutputStream(new FileOutputStream(testWar), mf);

        String specialFileName = "foo/bar.xml";
        String fileContents = "This is a file within our JAR file - it contains an <env-entry-value></env-entry-value> which should be filled by the configurator only if this is the 'special' file.";

        // Make our configurator replace this file within the JAR.
        configurator.setWebXmlFilename(specialFileName);

        // Create several random files in the zip.
        for (int i = 0; i < 10; i++) {
            JarEntry curEntry = new JarEntry("folder/file" + i);
            jarOutStream.putNextEntry(curEntry);
            IOUtils.write(fileContents, jarOutStream);
        }

        // Push in our special file now.
        JarEntry specialEntry = new JarEntry(specialFileName);
        jarOutStream.putNextEntry(specialEntry);
        IOUtils.write(fileContents, jarOutStream);

        // Close the output stream now, time to do the test.
        jarOutStream.close();

        // Configure this configurator with appropriate folders for testing.
        String expectedHomeDir = "/some/silly/random/homeDir";
        String webappsTarget = FileUtils.getTempDirectoryPath() + "/webapps/";
        File webappsTargetDir = new File(webappsTarget);
        if (webappsTargetDir.exists()) {
            FileUtils.deleteDirectory(webappsTargetDir);
        }
        String expectedDestFile = webappsTarget + "s#test#hudson.war";
        HudsonWarNamingStrategy warNamingStrategy = new HudsonWarNamingStrategy();
        warNamingStrategy.setPathPattern(webappsTarget + "s#%s#hudson.war");
        configurator.setHudsonWarNamingStrategy(warNamingStrategy);
        configurator.setTargetHudsonHomeBaseDir(expectedHomeDir);
        ProjectServiceConfiguration config = new ProjectServiceConfiguration();
        config.setProjectIdentifier("test123");

        Map<String, String> m = new HashMap<String, String>();
        m.put(ProjectServiceConfiguration.PROJECT_ID, "test");
        m.put(ProjectServiceConfiguration.PROFILE_BASE_URL, "https://qcode.cloudfoundry.com");
        config.setProperties(m);
        config.setProjectIdentifier("test");

        // Now, run it against our test setup
        configurator.configure(config);

        // Confirm that the zipfile was updates as expected.
        File configuredWar = new File(expectedDestFile);
        assertTrue(configuredWar.exists());

        try {
            JarFile configuredWarJar = new JarFile(configuredWar);
            Manifest extractedMF = configuredWarJar.getManifest();
            assertEquals(mfTestValue, extractedMF.getMainAttributes().getValue(mfTestHeader));

            // Make sure all of our entries are present, and contain the data we expected.
            JarEntry curEntry = null;
            Enumeration<JarEntry> entries = configuredWarJar.entries();
            while (entries.hasMoreElements()) {
                curEntry = entries.nextElement();

                // If this is the manifest, skip it.
                if (curEntry.getName().equals("META-INF/MANIFEST.MF")) {
                    continue;
                }

                String entryContents = IOUtils.toString(configuredWarJar.getInputStream(curEntry));

                if (curEntry.getName().equals(specialFileName)) {
                    assertFalse(fileContents.equals(entryContents));
                    assertTrue(entryContents.contains(expectedHomeDir));
                } else {
                    // Make sure our content was unchanged.
                    assertEquals(fileContents, entryContents);
                    assertFalse(entryContents.contains(expectedHomeDir));
                }
            }
        } finally {
            // Clean up our test file.
            configuredWar.delete();
        }
    } finally {
        // Clean up our test file.
        testWar.delete();
    }
}

From source file:com.taobao.android.builder.tools.multidex.FastMultiDexer.java

protected void copyStream(InputStream inputStream, JarOutputStream jos, JarEntry ze, String pathName) {
    try {//  w  w  w.  j  av  a 2 s.  co  m

        ZipEntry newEntry = new ZipEntry(pathName);
        // Make sure there is date and time set.
        if (ze.getTime() != -1) {
            newEntry.setTime(ze.getTime()); // If found set it into output file.
        }
        jos.putNextEntry(newEntry);
        IOUtils.copy(inputStream, jos);
        IOUtils.closeQuietly(inputStream);
    } catch (Exception e) {
        throw new GradleException("copy stream exception", e);
    }
}

From source file:org.apache.hadoop.mapred.TestTaskTrackerLocalization.java

/**
 * @param jobConf//from w ww. j  a v a  2 s  .  co  m
 * @throws IOException
 * @throws FileNotFoundException
 */
private void uploadJobJar(JobConf jobConf) throws IOException, FileNotFoundException {
    File jobJarFile = new File(TEST_ROOT_DIR, "jobjar-on-dfs.jar");
    JarOutputStream jstream = new JarOutputStream(new FileOutputStream(jobJarFile));
    ZipEntry ze = new ZipEntry("lib/lib1.jar");
    jstream.putNextEntry(ze);
    jstream.closeEntry();
    ze = new ZipEntry("lib/lib2.jar");
    jstream.putNextEntry(ze);
    jstream.closeEntry();
    jstream.finish();
    jstream.close();
    jobConf.setJar(jobJarFile.toURI().toString());
}

From source file:com.tasktop.c2c.server.hudson.configuration.service.HudsonServiceConfigurator.java

@Override
public void configure(ProjectServiceConfiguration configuration) {

    // Get a reference to our template WAR, and make sure it exists.
    File hudsonTemplateWar = new File(warTemplateFile);

    if (!hudsonTemplateWar.exists() || !hudsonTemplateWar.isFile()) {
        String message = "The given Hudson template WAR [" + hudsonTemplateWar
                + "] either did not exist or was not a file!";
        LOG.error(message);//  w w  w .j  a  v a 2 s . co  m
        throw new IllegalStateException(message);
    }

    String deployLocation = hudsonWarNamingStrategy.getWarFilePath(configuration);

    File hudsonDeployFile = new File(deployLocation);

    if (hudsonDeployFile.exists()) {
        String message = "When trying to deploy new WARfile [" + hudsonDeployFile.getAbsolutePath()
                + "] a file or directory with that name already existed! Continuing with provisioning.";
        LOG.info(message);
        return;
    }

    try {
        // Get a reference to our template war
        JarFile hudsonTemplateWarJar = new JarFile(hudsonTemplateWar);

        // Extract our web.xml from this war
        JarEntry webXmlEntry = hudsonTemplateWarJar.getJarEntry(webXmlFilename);
        String webXmlContents = IOUtils.toString(hudsonTemplateWarJar.getInputStream(webXmlEntry));

        // Update the web.xml to contain the correct HUDSON_HOME value
        String updatedXml = applyDirectoryToWebXml(webXmlContents, configuration);

        File tempDirFile = new File(tempDir);
        if (!tempDirFile.exists()) {
            tempDirFile.mkdirs();
        }

        // Put the web.xml back into the war
        File updatedHudsonWar = File.createTempFile("hudson", ".war", tempDirFile);

        JarOutputStream jarOutStream = new JarOutputStream(new FileOutputStream(updatedHudsonWar),
                hudsonTemplateWarJar.getManifest());

        // Loop through our existing zipfile and add in all of the entries to it except for our web.xml
        JarEntry curEntry = null;
        Enumeration<JarEntry> entries = hudsonTemplateWarJar.entries();
        while (entries.hasMoreElements()) {
            curEntry = entries.nextElement();

            // If this is the manifest, skip it.
            if (curEntry.getName().equals("META-INF/MANIFEST.MF")) {
                continue;
            }

            if (curEntry.getName().equals(webXmlEntry.getName())) {
                JarEntry newEntry = new JarEntry(curEntry.getName());
                jarOutStream.putNextEntry(newEntry);

                // Substitute our edited entry content.
                IOUtils.write(updatedXml, jarOutStream);
            } else {
                jarOutStream.putNextEntry(curEntry);
                IOUtils.copy(hudsonTemplateWarJar.getInputStream(curEntry), jarOutStream);
            }
        }

        // Clean up our resources.
        jarOutStream.close();

        // Move the war into it's deployment location so that it can be picked up and deployed by Tomcat.
        FileUtils.moveFile(updatedHudsonWar, hudsonDeployFile);
    } catch (IOException ioe) {
        // Log this exception and rethrow wrapped in a RuntimeException
        LOG.error(ioe.getMessage());
        throw new RuntimeException(ioe);
    }
}

From source file:com.threerings.media.tile.bundle.tools.TileSetBundler.java

/**
 * Create a tileset bundle jar file.// w  w w.j av a  2  s .co m
 *
 * @param target the tileset bundle file that will be created.
 * @param bundle contains the tilesets we'd like to save out to the bundle.
 * @param improv the image provider.
 * @param imageBase the base directory for getting images for non-ObjectTileSet tilesets.
 * @param keepOriginalPngs bundle up the original PNGs as PNGs instead of converting to the
 * FastImageIO raw format
 */
public static boolean createBundleJar(File target, TileSetBundle bundle, ImageProvider improv, String imageBase,
        boolean keepOriginalPngs, boolean uncompressed) throws IOException {
    // now we have to create the actual bundle file
    FileOutputStream fout = new FileOutputStream(target);
    Manifest manifest = new Manifest();
    JarOutputStream jar = new JarOutputStream(fout, manifest);
    jar.setLevel(uncompressed ? Deflater.NO_COMPRESSION : Deflater.BEST_COMPRESSION);

    try {
        // write all of the image files to the bundle, converting the
        // tilesets to trimmed tilesets in the process
        Iterator<Integer> iditer = bundle.enumerateTileSetIds();

        // Store off the updated TileSets in a separate Map so we can wait to change the
        // bundle till we're done iterating.
        HashIntMap<TileSet> toUpdate = new HashIntMap<TileSet>();
        while (iditer.hasNext()) {
            int tileSetId = iditer.next().intValue();
            TileSet set = bundle.getTileSet(tileSetId);
            String imagePath = set.getImagePath();

            // sanity checks
            if (imagePath == null) {
                log.warning("Tileset contains no image path " + "[set=" + set + "]. It ain't gonna work.");
                continue;
            }

            // if this is an object tileset, trim it
            if (!keepOriginalPngs && (set instanceof ObjectTileSet)) {
                // set the tileset up with an image provider; we
                // need to do this so that we can trim it!
                set.setImageProvider(improv);

                // we're going to trim it, so adjust the path
                imagePath = adjustImagePath(imagePath);
                jar.putNextEntry(new JarEntry(imagePath));

                try {
                    // create a trimmed object tileset, which will
                    // write the trimmed tileset image to the jar
                    // output stream
                    TrimmedObjectTileSet tset = TrimmedObjectTileSet.trimObjectTileSet((ObjectTileSet) set,
                            jar);
                    tset.setImagePath(imagePath);
                    // replace the original set with the trimmed
                    // tileset in the tileset bundle
                    toUpdate.put(tileSetId, tset);

                } catch (Exception e) {
                    e.printStackTrace(System.err);

                    String msg = "Error adding tileset to bundle " + imagePath + ", " + set.getName() + ": "
                            + e;
                    throw (IOException) new IOException(msg).initCause(e);
                }

            } else {
                // read the image file and convert it to our custom
                // format in the bundle
                File ifile = new File(imageBase, imagePath);
                try {
                    BufferedImage image = ImageIO.read(ifile);
                    if (!keepOriginalPngs && FastImageIO.canWrite(image)) {
                        imagePath = adjustImagePath(imagePath);
                        jar.putNextEntry(new JarEntry(imagePath));
                        set.setImagePath(imagePath);
                        FastImageIO.write(image, jar);
                    } else {
                        jar.putNextEntry(new JarEntry(imagePath));
                        FileInputStream imgin = new FileInputStream(ifile);
                        StreamUtil.copy(imgin, jar);
                    }
                } catch (Exception e) {
                    String msg = "Failure bundling image " + ifile + ": " + e;
                    throw (IOException) new IOException(msg).initCause(e);
                }
            }
        }
        bundle.putAll(toUpdate);

        // now write a serialized representation of the tileset bundle
        // object to the bundle jar file
        JarEntry entry = new JarEntry(BundleUtil.METADATA_PATH);
        jar.putNextEntry(entry);
        ObjectOutputStream oout = new ObjectOutputStream(jar);
        oout.writeObject(bundle);
        oout.flush();

        // finally close up the jar file and call ourself done
        jar.close();

        return true;

    } catch (Exception e) {
        // remove the incomplete jar file and rethrow the exception
        jar.close();
        if (!target.delete()) {
            log.warning("Failed to close botched bundle '" + target + "'.");
        }
        String errmsg = "Failed to create bundle " + target + ": " + e;
        throw (IOException) new IOException(errmsg).initCause(e);
    }
}

From source file:org.codehaus.mojo.jspc.CompileMojo.java

protected void createJarArchive(File archiveFile, File tempJarDir) throws IOException {
    JarOutputStream jos = null;
    try {/*w w w. j  a  va 2 s  .  c om*/
        jos = new JarOutputStream(new BufferedOutputStream(new FileOutputStream(archiveFile)), new Manifest());

        int pathLength = tempJarDir.getAbsolutePath().length() + 1;
        Collection<File> files = FileUtils.listFiles(tempJarDir, null, true);
        for (final File file : files) {
            if (!file.isFile()) {
                continue;
            }

            if (getLog().isDebugEnabled()) {
                getLog().debug("file: " + file.getAbsolutePath());
            }

            // Add entry
            String name = file.getAbsolutePath().substring(pathLength);
            // normalize path as the JspCompiler expects '/' as separator
            name = name.replace('\\', '/');
            JarEntry jarFile = new JarEntry(name);
            jos.putNextEntry(jarFile);

            FileUtils.copyFile(file, jos);
        }
    } finally {
        IOUtils.closeQuietly(jos);
    }
}

From source file:com.tasktop.c2c.server.jenkins.configuration.service.JenkinsServiceConfigurator.java

@Override
public void configure(ProjectServiceConfiguration configuration) {

    // Get a reference to our template WAR, and make sure it exists.
    File jenkinsTemplateWar = new File(warTemplateFile);

    if (!jenkinsTemplateWar.exists() || !jenkinsTemplateWar.isFile()) {
        String message = "The given Jenkins template WAR [" + jenkinsTemplateWar
                + "] either did not exist or was not a file!";
        LOG.error(message);//  ww w  . ja v  a  2 s  .co m
        throw new IllegalStateException(message);
    }

    String pathProperty = perOrg ? configuration.getOrganizationIdentifier()
            : configuration.getProjectIdentifier();

    String deployedUrl = configuration.getProperties().get(ProjectServiceConfiguration.PROFILE_BASE_URL)
            + jenkinsPath + pathProperty + "/jenkins/";
    deployedUrl.replace("//", "/");
    URL deployedJenkinsUrl;
    try {
        deployedJenkinsUrl = new URL(deployedUrl);
    } catch (MalformedURLException e) {
        throw new RuntimeException(e);
    }
    String webappName = deployedJenkinsUrl.getPath();
    if (webappName.startsWith("/")) {
        webappName = webappName.substring(1);
    }
    if (webappName.endsWith("/")) {
        webappName = webappName.substring(0, webappName.length() - 1);
    }
    webappName = webappName.replace("/", "#");
    webappName = webappName + ".war";

    // Calculate our final filename.

    String deployLocation = targetWebappsDir + webappName;

    File jenkinsDeployFile = new File(deployLocation);

    if (jenkinsDeployFile.exists()) {
        String message = "When trying to deploy new WARfile [" + jenkinsDeployFile.getAbsolutePath()
                + "] a file or directory with that name already existed! Continuing with provisioning.";
        LOG.info(message);
        return;
    }

    try {
        // Get a reference to our template war
        JarFile jenkinsTemplateWarJar = new JarFile(jenkinsTemplateWar);

        // Extract our web.xml from this war
        JarEntry webXmlEntry = jenkinsTemplateWarJar.getJarEntry(webXmlFilename);
        String webXmlContents = IOUtils.toString(jenkinsTemplateWarJar.getInputStream(webXmlEntry));

        // Update the web.xml to contain the correct JENKINS_HOME value
        String updatedXml = applyDirectoryToWebXml(webXmlContents, configuration);

        File tempDirFile = new File(tempDir);
        if (!tempDirFile.exists()) {
            tempDirFile.mkdirs();
        }

        // Put the web.xml back into the war
        File updatedJenkinsWar = File.createTempFile("jenkins", ".war", tempDirFile);

        JarOutputStream jarOutStream = new JarOutputStream(new FileOutputStream(updatedJenkinsWar),
                jenkinsTemplateWarJar.getManifest());

        // Loop through our existing zipfile and add in all of the entries to it except for our web.xml
        JarEntry curEntry = null;
        Enumeration<JarEntry> entries = jenkinsTemplateWarJar.entries();
        while (entries.hasMoreElements()) {
            curEntry = entries.nextElement();

            // If this is the manifest, skip it.
            if (curEntry.getName().equals("META-INF/MANIFEST.MF")) {
                continue;
            }

            if (curEntry.getName().equals(webXmlEntry.getName())) {
                JarEntry newEntry = new JarEntry(curEntry.getName());
                jarOutStream.putNextEntry(newEntry);

                // Substitute our edited entry content.
                IOUtils.write(updatedXml, jarOutStream);
            } else {
                jarOutStream.putNextEntry(curEntry);
                IOUtils.copy(jenkinsTemplateWarJar.getInputStream(curEntry), jarOutStream);
            }
        }

        // Clean up our resources.
        jarOutStream.close();

        // Move the war into its deployment location so that it can be picked up and deployed by the app server.
        FileUtils.moveFile(updatedJenkinsWar, jenkinsDeployFile);
    } catch (IOException ioe) {
        // Log this exception and rethrow wrapped in a RuntimeException
        LOG.error(ioe.getMessage());
        throw new RuntimeException(ioe);
    }
}

From source file:kr.motd.maven.exec.ExecMojo.java

/**
 * Create a jar with just a manifest containing a Main-Class entry for SurefireBooter and a Class-Path entry for all
 * classpath elements. Copied from surefire (ForkConfiguration#createJar())
 *
 * @param classPath List&lt;String> of all classpath elements.
 * @return//w ww.j  a v a 2s. c o  m
 * @throws IOException
 */
private File createJar(List<String> classPath, String mainClass) throws IOException {
    File file = File.createTempFile("maven-exec", ".jar");
    file.deleteOnExit();
    FileOutputStream fos = new FileOutputStream(file);
    JarOutputStream jos = new JarOutputStream(fos);
    jos.setLevel(JarOutputStream.STORED);
    JarEntry je = new JarEntry("META-INF/MANIFEST.MF");
    jos.putNextEntry(je);

    Manifest man = new Manifest();

    // we can't use StringUtils.join here since we need to add a '/' to
    // the end of directory entries - otherwise the jvm will ignore them.
    StringBuilder cp = new StringBuilder();
    for (String el : classPath) {
        // NOTE: if File points to a directory, this entry MUST end in '/'.
        cp.append(new URL(new File(el).toURI().toASCIIString()).toExternalForm() + " ");
    }

    man.getMainAttributes().putValue("Manifest-Version", "1.0");
    man.getMainAttributes().putValue("Class-Path", cp.toString().trim());
    man.getMainAttributes().putValue("Main-Class", mainClass);

    man.write(jos);
    jos.close();

    return file;
}