Examples with JarURLConnection java.net.JarURLConnection used on opensource projects

Example 61 with JarURLConnection

use of java.net.JarURLConnection in project openj9 by eclipse.

the class RecreateClassUtils method createClassFile.

/* Reads a class file from the jar file from which the class was loaded
	 * and creates a local copy in current working directory.
	 */
public static void createClassFile(Class<?> testClass, String classFileName) throws Exception {
    URL url = testClass.getResource(classFileName + ".class");
    if (url != null) {
        URLConnection connection = url.openConnection();
        if (connection instanceof JarURLConnection) {
            JarURLConnection urlConnection = (JarURLConnection) connection;
            urlConnection.connect();
            try (InputStream inStream = urlConnection.getInputStream()) {
                File outFile = new File(classFileName + ".class");
                try (FileOutputStream outStream = new FileOutputStream(outFile)) {
                    byte[] data = new byte[1024];
                    int size;
                    while ((size = inStream.read(data)) > 0) {
                        outStream.write(data, 0, size);
                    }
                }
            }
        }
    }
}

Example 62 with JarURLConnection

use of java.net.JarURLConnection in project openj9 by eclipse.

the class CustomPartitioningURLLoader method locateClass.

private int locateClass(String className) {
    int classAtEntry = -1;
    String name = className.replace('.', '/').concat(".class");
    for (int index = 0; index < urls.length; index++) {
        URL currentUrl = urls[index];
        if (currentUrl.getProtocol().equals("jar")) {
            JarEntry entry = null;
            JarFile jf = (JarFile) jarCache.get(currentUrl);
            if (jf == null) {
                /* First time we have encountered this jar.
					 * Lets cache its metaData.
					 */
                try {
                    URL jarFileUrl = ((JarURLConnection) currentUrl.openConnection()).getJarFileURL();
                    JarURLConnection jarUrlConnection = (JarURLConnection) new URL("jar", "", jarFileUrl.toExternalForm() + "!/").openConnection();
                    try {
                        jf = jarUrlConnection.getJarFile();
                    } catch (Exception e) {
                    }
                    if (jf != null) {
                        jarCache.put(currentUrl, jf);
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
                if (jf != null) {
                    Manifest manifest = null;
                    java.security.cert.Certificate[] certs = null;
                    URL csUrl = currentUrl;
                    CodeSource codeSource;
                    try {
                        manifest = jf.getManifest();
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                    entry = jf.getJarEntry(name);
                    if (entry != null) {
                        certs = entry.getCertificates();
                    }
                    codeSource = new CodeSource(csUrl, certs);
                    CustomLoaderMetaDataCache metaData = new CustomLoaderMetaDataCache();
                    metaData.manifest = manifest;
                    metaData.codeSource = codeSource;
                    metaDataArray[index] = metaData;
                }
            }
            if (entry == null && jf != null) {
                entry = jf.getJarEntry(name);
            }
            if (entry != null) {
                /* We have the first match on the class path, return the current url index */
                return index;
            }
        } else {
            String filename = currentUrl.getFile();
            String host = currentUrl.getHost();
            if (host != null && host.length() > 0) {
                filename = new StringBuffer(host.length() + filename.length() + name.length() + 2).append("//").append(host).append(filename).append(name).toString();
            } else {
                filename = new StringBuffer(filename.length() + name.length()).append(filename).append(name).toString();
            }
            File file = new File(filename);
            // Don't throw exceptions for speed
            if (file.exists()) {
                if (metaDataArray[index] == null) {
                    java.security.cert.Certificate[] certs = null;
                    CustomLoaderMetaDataCache metaData = new CustomLoaderMetaDataCache();
                    metaData.manifest = null;
                    metaData.codeSource = new CodeSource(currentUrl, certs);
                    metaDataArray[index] = metaData;
                }
                return index;
            }
        }
    }
    return classAtEntry;
}

Example 63 with JarURLConnection

use of java.net.JarURLConnection in project embulk by embulk.

the class PluginClassLoader method findResourceFromEmbeddedJars.

private URL findResourceFromEmbeddedJars(final String resourceName) {
    for (final String embeddedJarPath : this.embeddedJarPathsInNestedJar) {
        final URL embeddedJarUrl;
        final JarURLConnection embeddedJarUrlConnection;
        final JarInputStream embeddedJarInputStream;
        try {
            embeddedJarUrl = getEmbeddedJarUrl(embeddedJarPath);
            embeddedJarUrlConnection = getEmbeddedJarUrlConnection(embeddedJarUrl);
            embeddedJarInputStream = getEmbeddedJarInputStream(embeddedJarUrlConnection);
        } catch (IOException ex) {
            // TODO: Notify this to reporters as far as possible.
            System.err.println("Failed to load entry in embedded JAR: " + resourceName + " / " + embeddedJarPath);
            ex.printStackTrace();
            continue;
        }
        JarEntry jarEntry;
        try {
            jarEntry = embeddedJarInputStream.getNextJarEntry();
        } catch (IOException ex) {
            // TODO: Notify this to reporters as far as possible.
            System.err.println("Failed to load entry in embedded JAR: " + resourceName + " / " + embeddedJarPath);
            ex.printStackTrace();
            continue;
        }
        jarEntries: while (jarEntry != null) {
            if (jarEntry.getName().equals(resourceName)) {
                // The URL lives only in the JVM execution.
                try {
                    // The URL lives only in the JVM execution.
                    return new URL("embulk-plugin-jar", "", -1, embeddedJarUrl + "!!/" + resourceName, new PluginClassUrlStreamHandler("embulk-plugin-jar"));
                } catch (MalformedURLException ex) {
                    // TODO: Notify this to reporters as far as possible.
                    System.err.println("Failed to load entry in embedded JAR: " + resourceName + " / " + embeddedJarPath);
                    ex.printStackTrace();
                    break jarEntries;
                }
            }
            try {
                jarEntry = embeddedJarInputStream.getNextJarEntry();
            } catch (IOException ex) {
                // TODO: Notify this to reporters as far as possible.
                System.err.println("Failed to load entry in embedded JAR: " + resourceName + " / " + embeddedJarPath);
                ex.printStackTrace();
                break jarEntries;
            }
        }
    }
    return null;
}

Example 64 with JarURLConnection

use of java.net.JarURLConnection in project embulk by embulk.

the class PluginClassLoader method getEmbeddedJarUrlConnection.

private JarURLConnection getEmbeddedJarUrlConnection(final URL embeddedJarUrl) throws IOException {
    final JarURLConnection embeddedJarUrlConnection;
    try {
        final URLConnection urlConnection = embeddedJarUrl.openConnection();
        embeddedJarUrlConnection = (JarURLConnection) urlConnection;
    } catch (IOException ex) {
        // TODO: Notify this to reporters as far as possible.
        System.err.println("Failed to load entry in embedded JAR: " + embeddedJarUrl.toString());
        ex.printStackTrace();
        throw ex;
    }
    return embeddedJarUrlConnection;
}

Example 65 with JarURLConnection

use of java.net.JarURLConnection in project embulk by embulk.

the class JarPluginLoader method load.

public static JarPluginLoader load(final Path jarPath, final PluginClassLoaderFactory classLoaderFactory) throws InvalidJarPluginException {
    final JarURLConnection connection = openJarUrlConnection(jarPath);
    final Manifest manifest = loadJarPluginManifest(connection, jarPath);
    final Attributes manifestAttributes = manifest.getMainAttributes();
    final int spiVersion = getPluginSpiVersionFromManifest(manifestAttributes);
    if (spiVersion == 0) {
        final String mainClassName = getPluginMainClassNameFromManifest(manifestAttributes);
        final List<String> pluginClassPath = getPluginClassPathFromManifest(manifestAttributes);
        final Class mainClass = loadJarPluginMainClass(jarPath, mainClassName, pluginClassPath, classLoaderFactory);
        return new JarPluginLoader(manifest, manifestAttributes, mainClass);
    }
    throw new InvalidJarPluginException("Unknown SPI version of JAR plugin: " + spiVersion);
}