Example usage for java.util.jar JarInputStream JarInputStream

Introduction

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

Prototype

public JarInputStream(InputStream in) throws IOException 

Source Link

Document

Creates a new JarInputStream and reads the optional manifest.

Usage

From source file:org.apache.sling.tooling.support.install.impl.InstallServlet.java

private void installBasedOnUploadedJar(HttpServletRequest req, HttpServletResponse resp) throws IOException {

    InstallationResult result = null;//  www . j av  a2  s  .c o m

    try {
        DiskFileItemFactory factory = new DiskFileItemFactory();
        // try to hold even largish bundles in memory to potentially improve performance
        factory.setSizeThreshold(UPLOAD_IN_MEMORY_SIZE_THRESHOLD);

        ServletFileUpload upload = new ServletFileUpload();
        upload.setFileItemFactory(factory);

        @SuppressWarnings("unchecked")
        List<FileItem> items = upload.parseRequest(req);
        if (items.size() != 1) {
            logAndWriteError(
                    "Found " + items.size() + " items to process, but only updating 1 bundle is supported",
                    resp);
            return;
        }

        FileItem item = items.get(0);

        JarInputStream jar = null;
        InputStream rawInput = null;
        try {
            jar = new JarInputStream(item.getInputStream());
            Manifest manifest = jar.getManifest();
            if (manifest == null) {
                logAndWriteError("Uploaded jar file does not contain a manifest", resp);
                return;
            }

            final String symbolicName = manifest.getMainAttributes().getValue(Constants.BUNDLE_SYMBOLICNAME);

            if (symbolicName == null) {
                logAndWriteError("Manifest does not have a " + Constants.BUNDLE_SYMBOLICNAME, resp);
                return;
            }

            final String version = manifest.getMainAttributes().getValue(Constants.BUNDLE_VERSION);

            // the JarInputStream is used only for validation, we need a fresh input stream for updating
            rawInput = item.getInputStream();

            Bundle found = getBundle(symbolicName);
            try {
                installOrUpdateBundle(found, rawInput, "inputstream:" + symbolicName + "-" + version + ".jar");

                result = new InstallationResult(true, null);
                resp.setStatus(200);
                result.render(resp.getWriter());
                return;
            } catch (BundleException e) {
                logAndWriteError("Unable to install/update bundle " + symbolicName, e, resp);
                return;
            }
        } finally {
            IOUtils.closeQuietly(jar);
            IOUtils.closeQuietly(rawInput);
        }

    } catch (FileUploadException e) {
        logAndWriteError("Failed parsing uploaded bundle", e, resp);
        return;
    }
}

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From source file:org.teavm.classlib.impl.report.JCLComparisonBuilder.java

private List<JCLPackage> buildModel() throws IOException {
    Map<String, JCLPackage> packageMap = new HashMap<>();
    URL url = classLoader.getResource("java/lang/Object" + CLASS_SUFFIX);
    String path = url.toString();
    if (!path.startsWith(JAR_PREFIX) || !path.endsWith(JAR_SUFFIX)) {
        throw new RuntimeException("Can't find JCL classes");
    }//from   ww w  .j  a va  2 s  .c  o  m
    ClasspathClassHolderSource classSource = new ClasspathClassHolderSource(classLoader);
    path = path.substring(JAR_PREFIX.length(), path.length() - JAR_SUFFIX.length());
    File outDir = new File(outputDirectory).getParentFile();
    if (!outDir.exists()) {
        outDir.mkdirs();
    }
    path = URLDecoder.decode(path, "UTF-8");
    try (JarInputStream jar = new JarInputStream(new FileInputStream(path))) {
        visitor = new JCLComparisonVisitor(classSource, packageMap);
        while (true) {
            JarEntry entry = jar.getNextJarEntry();
            if (entry == null) {
                break;
            }
            if (validateName(entry.getName())) {
                compareClass(jar);
            }
            jar.closeEntry();
        }
    }
    return new ArrayList<>(packageMap.values());
}

---

From source file:org.apache.hadoop.hbase.ClassFinder.java

private Set<Class<?>> findClassesFromJar(String jarFileName, String packageName, boolean proceedOnExceptions)
        throws IOException, ClassNotFoundException, LinkageError {
    JarInputStream jarFile = null;
    try {/*w w w .ja  v  a  2s  .  com*/
        jarFile = new JarInputStream(new FileInputStream(jarFileName));
    } catch (IOException ioEx) {
        LOG.warn("Failed to look for classes in " + jarFileName + ": " + ioEx);
        throw ioEx;
    }

    Set<Class<?>> classes = new HashSet<Class<?>>();
    JarEntry entry = null;
    try {
        while (true) {
            try {
                entry = jarFile.getNextJarEntry();
            } catch (IOException ioEx) {
                if (!proceedOnExceptions) {
                    throw ioEx;
                }
                LOG.warn("Failed to get next entry from " + jarFileName + ": " + ioEx);
                break;
            }
            if (entry == null) {
                break; // loop termination condition
            }

            String className = entry.getName();
            if (!className.endsWith(CLASS_EXT)) {
                continue;
            }
            int ix = className.lastIndexOf('/');
            String fileName = (ix >= 0) ? className.substring(ix + 1) : className;
            if (null != this.fileNameFilter && !this.fileNameFilter.isCandidateFile(fileName, className)) {
                continue;
            }
            className = className.substring(0, className.length() - CLASS_EXT.length()).replace('/', '.');
            if (!className.startsWith(packageName)) {
                continue;
            }
            Class<?> c = makeClass(className, proceedOnExceptions);
            if (c != null) {
                if (!classes.add(c)) {
                    LOG.warn("Ignoring duplicate class " + className);
                }
            }
        }
        return classes;
    } finally {
        jarFile.close();
    }
}

---

From source file:com.geewhiz.pacify.TestArchive.java

@Test
public void checkJarWhereTheSourceIsntAJarPerDefinition() throws ArchiveException, IOException {
    LoggingUtils.setLogLevel(logger, Level.ERROR);

    String testFolder = "testArchive/correct/jarWhereSourceIsntAJarPerDefinition";

    File testResourceFolder = new File("src/test/resources/", testFolder);
    File targetResourceFolder = new File("target/test-resources/", testFolder);

    LinkedHashSet<Defect> defects = createPrepareValidateAndReplace(testFolder,
            createPropertyResolveManager(propertiesToUseWhileResolving));

    Assert.assertEquals("We shouldnt get any defects.", 0, defects.size());

    JarInputStream in = new JarInputStream(
            new FileInputStream(new File(testResourceFolder, "package/archive.jar")));
    JarInputStream out = new JarInputStream(
            new FileInputStream(new File(targetResourceFolder, "package/archive.jar")));

    Assert.assertNull("SRC jar should be a jar which is packed via zip, so the first entry isn't the manifest.",
            in.getManifest());/*from  ww w  .ja  va  2  s  .  c o  m*/
    Assert.assertNotNull("RESULT jar should contain the manifest as first entry", out.getManifest());

    in.close();
    out.close();

    checkIfResultIsAsExpected(testFolder);
}

---

From source file:org.openspaces.maven.plugin.CreatePUProjectMojo.java

/**
 * Extracts the project files to the project directory.
 *///from w  w  w  .  j av  a 2  s . c o  m
private void extract(URL url) throws Exception {
    packageDirs = packageName.replaceAll("\\.", "/");
    String puTemplate = DIR_TEMPLATES + "/" + template + "/";
    int length = puTemplate.length() - 1;
    BufferedInputStream bis = new BufferedInputStream(url.openStream());
    JarInputStream jis = new JarInputStream(bis);
    JarEntry je;
    byte[] buf = new byte[1024];
    int n;
    while ((je = jis.getNextJarEntry()) != null) {
        String jarEntryName = je.getName();
        PluginLog.getLog().debug("JAR entry: " + jarEntryName);
        if (je.isDirectory() || !jarEntryName.startsWith(puTemplate)) {
            continue;
        }
        String targetFileName = projectDir + jarEntryName.substring(length);

        // convert the ${gsGroupPath} to directory
        targetFileName = StringUtils.replace(targetFileName, FILTER_GROUP_PATH, packageDirs);
        PluginLog.getLog().debug("Extracting entry " + jarEntryName + " to " + targetFileName);

        // read the bytes to the buffer
        ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
        while ((n = jis.read(buf, 0, 1024)) > -1) {
            byteStream.write(buf, 0, n);
        }

        // replace property references with the syntax ${property_name}
        // to their respective property values.
        String data = byteStream.toString();
        data = StringUtils.replace(data, FILTER_GROUP_ID, packageName);
        data = StringUtils.replace(data, FILTER_ARTIFACT_ID, projectDir.getName());
        data = StringUtils.replace(data, FILTER_GROUP_PATH, packageDirs);

        // write the entire converted file content to the destination file.
        File f = new File(targetFileName);
        File dir = f.getParentFile();
        if (!dir.exists()) {
            dir.mkdirs();
        }
        FileWriter writer = new FileWriter(f);
        writer.write(data);
        jis.closeEntry();
        writer.close();
    }
    jis.close();
}

---

From source file:org.talend.components.api.component.runtime.JarRuntimeInfoTest.java

/**
 * Test method for/*from  w  w w  .j  a  v a 2 s . c  o  m*/
 * {@link org.talend.components.api.component.runtime.JarRuntimeInfo#extracDependencyFromStream(org.talend.components.api.component.runtime.DependenciesReader, java.lang.String, java.util.jar.JarInputStream)}
 * .
 * 
 * @throws IOException
 * @throws MalformedURLException
 */
@Test
public void testExtracDependencyFromStream() throws MalformedURLException, IOException {
    MavenResolver mavenResolver = MavenResolvers.createMavenResolver(null, "foo");
    File jarWithDeps = mavenResolver.resolve("mvn:org.talend.components/components-api-full-example/0.1.0");
    try (JarInputStream jis = new JarInputStream(new FileInputStream(jarWithDeps))) {
        List<URL> dependencyFromStream = JarRuntimeInfo.extracDependencyFromStream(new DependenciesReader(null),
                DependenciesReader.computeDependenciesFilePath("org.talend.components",
                        "components-full-example"),
                jis);
        checkFullExampleDependencies(dependencyFromStream);

    }
}

---

From source file:org.pentaho.osgi.platform.webjars.WebjarsURLConnectionTest.java

@Test
public void testClosingStream() throws IOException {
    WebjarsURLConnection connection = new WebjarsURLConnection(
            new URL("mvn:org.webjars/angular-dateparser/1.0.9"));
    connection.connect();/*  w w w  .  j  a  va2  s.  co m*/

    InputStream inputStream = connection.getInputStream();
    JarInputStream jar = new JarInputStream(inputStream);
    jar.getManifest();
    jar.close();
    try {
        connection.transform_thread.get();
    } catch (Exception exception) {
        fail("Thread failed to execute transform() method: " + exception.getMessage());
    }
}

---

From source file:com.streamsets.datacollector.cluster.TestTarFileCreator.java

private static void readJar(TarInputStream tis) throws IOException {
    TarEntry fileEntry = readFile(tis);// w w w  .  j a va  2s  .c  om
    byte[] buffer = new byte[8192 * 8];
    int read = IOUtils.read(tis, buffer);
    JarInputStream jar = new JarInputStream(new ByteArrayInputStream(buffer, 0, read));
    JarEntry entry = jar.getNextJarEntry();
    Assert.assertNotNull(Utils.format("Read {} bytes and found a null entry", read), entry);
    Assert.assertEquals("sample.txt", entry.getName());
    read = IOUtils.read(jar, buffer);
    Assert.assertEquals(FilenameUtils.getBaseName(fileEntry.getName()),
            new String(buffer, 0, read, StandardCharsets.UTF_8));
}

---

From source file:com.ottogroup.bi.asap.repository.ComponentClassloader.java

/**
 * Find class inside managed jars or hand over the parent
 * @see java.lang.ClassLoader#findClass(java.lang.String)
 *//*  w  w w.jav a 2 s .c o m*/
protected Class<?> findClass(String name) throws ClassNotFoundException {

    // find in already loaded classes to make things shorter
    Class<?> clazz = findLoadedClass(name);
    if (clazz != null)
        return clazz;

    // check if the class searched for is contained inside managed jars,
    // otherwise hand over the request to the parent class loader
    String jarFileName = this.classesJarMapping.get(name);
    if (StringUtils.isBlank(jarFileName)) {
        super.findClass(name);
    }

    // try to find class inside jar the class name is associated with
    JarInputStream jarInput = null;
    try {
        // open a stream on jar which contains the class
        jarInput = new JarInputStream(new FileInputStream(jarFileName));
        // ... and iterate through all entries
        JarEntry jarEntry = null;
        while ((jarEntry = jarInput.getNextJarEntry()) != null) {

            // extract the name of the jar entry and check if it has suffix '.class' and thus contains
            // the search for implementation
            String entryFileName = jarEntry.getName();
            if (entryFileName.endsWith(".class")) {

                // replace slashes by dots, remove suffix and compare the result with the searched for class name 
                entryFileName = entryFileName.substring(0, entryFileName.length() - 6).replace('/', '.');
                if (name.equalsIgnoreCase(entryFileName)) {

                    // load bytes from jar entry and define a class over it
                    byte[] data = loadBytes(jarInput);
                    if (data != null) {
                        return defineClass(name, data, 0, data.length);
                    }

                    // if the jar entry does not contain any data, throw an exception
                    throw new ClassNotFoundException("Class '" + name + "' not found");
                }
            }
        }
    } catch (IOException e) {
        // if any io error occurs: throw an exception
        throw new ClassNotFoundException("Class '" + name + "' not found");
    } finally {
        try {
            jarInput.close();
        } catch (IOException e) {
            logger.error("Failed to close open JAR file '" + jarFileName + "'. Error: " + e.getMessage());
        }
    }

    // if no such class exists, throw an exception
    throw new ClassNotFoundException("Class [" + name + "] not found");

}

---

From source file:com.izforge.izpack.installer.unpacker.Pack200FileUnpackerTest.java

/**
 * Returns a file from a jar as a byte array.
 *
 * @param file the jar file//from w  w w .j  ava 2  s. c  om
 * @param name the entry name
 * @return the file content
 * @throws IOException for any I/O error
 */
private byte[] getEntry(File file, String name) throws IOException {
    JarInputStream stream = new JarInputStream(new FileInputStream(file));
    try {
        JarEntry entry;
        ByteArrayOutputStream bytes = new ByteArrayOutputStream();
        while ((entry = stream.getNextJarEntry()) != null) {
            if (entry.getName().endsWith(name)) {
                IOUtils.copy(stream, bytes);
                return bytes.toByteArray();
            }
        }
        fail("Entry not found: " + name);
    } finally {
        stream.close();
    }
    return null;
}

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