Java 类org.springframework.boot.loader.archive.JarFileArchive 实例源码

public SpringBootPluginsClassLoader(final ClassLoader parent) throws IOException {
    super(new URL[]{}, parent);

    // find all jar plugins
    final Collection<File> jarFiles = FileUtils.listFiles(new File("plugins/"), new String[]{"jar"}, false);

    for(final File jarFile : jarFiles) {
        // add the jar's own classes to classpath
        final URL jarURL = new URL("jar:file:" + jarFile.getPath() + "!/BOOT-INF/classes/");
        addURL(jarURL);

        final JarFileArchive jarFileArchive = new JarFileArchive(jarFile);
        final List<Archive> nestedArchives = jarFileArchive
                .getNestedArchives(entry -> entry.getName().endsWith(".jar"));

        for(final Archive archive : nestedArchives) {
            // add all bundled dependencies to classpath
            addURL(archive.getUrl());
        }
    }
}

protected final Archive createArchive() throws Exception {
    ProtectionDomain protectionDomain = getClass().getProtectionDomain();
    CodeSource codeSource = protectionDomain.getCodeSource();
    URI location = (codeSource == null ? null : codeSource.getLocation().toURI());
    String path = (location == null ? null : location.getSchemeSpecificPart());
    if (path == null) {
        throw new IllegalStateException("Unable to determine code source archive");
    }
    File root = new File(path);
    if (!root.exists()) {
        throw new IllegalStateException(
                "Unable to determine code source archive from " + root);
    }
    return (root.isDirectory() ? new ExplodedArchive(root)
            : new JarFileArchive(root));
}

protected final Archive createArchive() throws Exception {
    ProtectionDomain protectionDomain = getClass().getProtectionDomain();
    CodeSource codeSource = protectionDomain.getCodeSource();
    URI location = (codeSource == null ? null : codeSource.getLocation().toURI());
    String path = (location == null ? null : location.getSchemeSpecificPart());
    if (path == null) {
        throw new IllegalStateException("Unable to determine code source archive");
    }
    File root = new File(path);
    if (!root.exists()) {
        throw new IllegalStateException(
                "Unable to determine code source archive from " + root);
    }
    return (root.isDirectory() ? new ExplodedArchive(root)
            : new JarFileArchive(root));
}

protected final Archive createArchive() throws Exception {
    ProtectionDomain protectionDomain = getClass().getProtectionDomain();
    CodeSource codeSource = protectionDomain.getCodeSource();
    URI location = (codeSource == null ? null : codeSource.getLocation().toURI());
    String path = (location == null ? null : location.getSchemeSpecificPart());
    if (path == null) {
        throw new IllegalStateException("Unable to determine code source archive");
    }
    File root = new File(path);
    if (!root.exists()) {
        throw new IllegalStateException(
                "Unable to determine code source archive from " + root);
    }
    return (root.isDirectory() ? new ExplodedArchive(root)
            : new JarFileArchive(root));
}

private Archive getArchive(File file) throws IOException {
    String name = file.getName().toLowerCase();
    if (name.endsWith(".jar") || name.endsWith(".zip")) {
        return new JarFileArchive(file);
    }
    return null;
}

@Test
public void archivedWarHasOnlyWebInfClassesAndContentsOfWebInfLibOnClasspath()
        throws Exception {
    File warRoot = createWarArchive();
    WarLauncher launcher = new WarLauncher(new JarFileArchive(warRoot));
    List<Archive> archives = launcher.getClassPathArchives();
    assertThat(archives).hasSize(2);
    assertThat(getUrls(archives)).containsOnly(
            new URL("jar:" + warRoot.toURI().toURL() + "!/WEB-INF/classes!/"),
            new URL("jar:" + warRoot.toURI().toURL() + "!/WEB-INF/lib/foo.jar!/"));
}

private Archive getArchive(File file) throws IOException {
    String name = file.getName().toLowerCase();
    if (name.endsWith(".jar") || name.endsWith(".zip")) {
        return new JarFileArchive(file);
    }
    return null;
}

@Test
public void archivedWarHasOnlyWebInfClassesAndContentsOfWebInfLibOnClasspath()
        throws Exception {
    File warRoot = createWarArchive();
    WarLauncher launcher = new WarLauncher(new JarFileArchive(warRoot));
    List<Archive> archives = launcher.getClassPathArchives();
    assertThat(archives).hasSize(2);
    assertThat(getUrls(archives)).containsOnly(
            new URL("jar:" + warRoot.toURI().toURL() + "!/WEB-INF/classes!/"),
            new URL("jar:" + warRoot.toURI().toURL() + "!/WEB-INF/lib/foo.jar!/"));
}

@Override
public List<Archive> getNestedArchives(EntryFilter ignored) throws IOException {
    try {
        List<Archive> archives = new ArrayList<>(mavenProject.getRuntimeClasspathElements().size());
        for (String dep : mavenProject.getRuntimeClasspathElements()) {
            File file = new File(dep);
            archives.add(file.isDirectory() ? new ExplodedArchive(file) : new JarFileArchive(file));
        }
        return archives;
    }
    catch (DependencyResolutionRequiredException e) {
        throw new IOException("Could not create boot archive", e);
    }

}

private Archive getArchive(File file) throws IOException {
    String name = file.getName().toLowerCase();
    if (name.endsWith(".jar") || name.endsWith(".zip")) {
        return new JarFileArchive(file);
    }
    return null;
}

private void addParentClassLoaderEntries(List<Archive> lib)
        throws IOException, URISyntaxException {
    ClassLoader parentClassLoader = getClass().getClassLoader();
    List<Archive> urls = new ArrayList<Archive>();
    for (URL url : getURLs(parentClassLoader)) {
        if (url.toString().endsWith(".jar") || url.toString().endsWith(".zip")) {
            urls.add(new JarFileArchive(new File(url.toURI())));
        }
        else if (url.toString().endsWith("/*")) {
            String name = url.getFile();
            File dir = new File(name.substring(0, name.length() - 1));
            if (dir.exists()) {
                urls.add(new ExplodedArchive(
                        new File(name.substring(0, name.length() - 1)), false));
            }
        }
        else {
            String filename = URLDecoder.decode(url.getFile(), "UTF-8");
            urls.add(new ExplodedArchive(new File(filename)));
        }
    }
    // The parent archive might have a "lib/" directory, meaning we are running from
    // an executable JAR. We add nested entries from there with low priority (i.e. at
    // end).
    addNestedArchivesFromParent(urls);
    for (Archive archive : urls) {
        // But only add them if they are not already included
        if (findArchive(lib, archive) < 0) {
            lib.add(archive);
        }
    }
}

@Test
public void archivedWarHasOnlyWebInfClassesAndContentsOfWebInfLibOnClasspath()
        throws Exception {
    File warRoot = createWarArchive();

    WarLauncher launcher = new WarLauncher(new JarFileArchive(warRoot));
    List<Archive> archives = launcher.getClassPathArchives();
    assertEquals(2, archives.size());

    assertThat(getUrls(archives),
            hasItems(new URL("jar:" + warRoot.toURI().toURL()
                    + "!/WEB-INF/classes!/"),
            new URL("jar:" + warRoot.toURI().toURL() + "!/WEB-INF/lib/foo.jar!/")));
}

private Archive resolveAsArchive(Resource app) throws IOException {
        File moduleFile = app.getFile();
        return moduleFile.isDirectory() ? new ExplodedArchive(moduleFile) : new JarFileArchive(moduleFile);
}

private Archive resolveAsArchive(Resource app) throws IOException {
    File moduleFile = app.getFile();
    return moduleFile.isDirectory() ? new ExplodedArchive(moduleFile) : new JarFileArchive(moduleFile);
}