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

Example 81 with JarURLConnection

use of java.net.JarURLConnection in project grails-core by grails.

the class PathMatchingResourcePatternResolver method doFindPathMatchingJarResources.

/**
 * Find all resources in jar files that match the given location pattern
 * via the Ant-style PathMatcher.
 * @param rootDirResource the root directory as Resource
 * @param subPattern the sub pattern to match (below the root directory)
 * @return the Set of matching Resource instances
 * @throws IOException in case of I/O errors
 * @see java.net.JarURLConnection
 */
protected Set<Resource> doFindPathMatchingJarResources(Resource rootDirResource, String subPattern) throws IOException {
    URLConnection con = rootDirResource.getURL().openConnection();
    JarFile jarFile;
    String jarFileUrl;
    String rootEntryPath;
    boolean newJarFile = false;
    if (con instanceof JarURLConnection) {
        // Should usually be the case for traditional JAR files.
        JarURLConnection jarCon = (JarURLConnection) con;
        GrailsResourceUtils.useCachesIfNecessary(jarCon);
        jarFile = jarCon.getJarFile();
        jarFileUrl = jarCon.getJarFileURL().toExternalForm();
        JarEntry jarEntry = jarCon.getJarEntry();
        rootEntryPath = (jarEntry != null ? jarEntry.getName() : "");
    } else {
        // No JarURLConnection -> need to resort to URL file parsing.
        // We'll assume URLs of the format "jar:path!/entry", with the protocol
        // being arbitrary as long as following the entry format.
        // We'll also handle paths with and without leading "file:" prefix.
        String urlFile = rootDirResource.getURL().getFile();
        int separatorIndex = urlFile.indexOf(GrailsResourceUtils.JAR_URL_SEPARATOR);
        if (separatorIndex != -1) {
            jarFileUrl = urlFile.substring(0, separatorIndex);
            rootEntryPath = urlFile.substring(separatorIndex + GrailsResourceUtils.JAR_URL_SEPARATOR.length());
            jarFile = getJarFile(jarFileUrl);
        } else {
            jarFile = new JarFile(urlFile);
            jarFileUrl = urlFile;
            rootEntryPath = "";
        }
        newJarFile = true;
    }
    try {
        if (!"".equals(rootEntryPath) && !rootEntryPath.endsWith("/")) {
            // Root entry path must end with slash to allow for proper matching.
            // The Sun JRE does not return a slash here, but BEA JRockit does.
            rootEntryPath = rootEntryPath + "/";
        }
        Set<Resource> result = new LinkedHashSet<Resource>(8);
        for (Enumeration<JarEntry> entries = jarFile.entries(); entries.hasMoreElements(); ) {
            JarEntry entry = entries.nextElement();
            String entryPath = entry.getName();
            if (entryPath.startsWith(rootEntryPath)) {
                String relativePath = entryPath.substring(rootEntryPath.length());
                if (getPathMatcher().match(subPattern, relativePath)) {
                    result.add(rootDirResource.createRelative(relativePath));
                }
            }
        }
        return result;
    } finally {
        // not from JarURLConnection, which might cache the file reference.
        if (newJarFile) {
            jarFile.close();
        }
    }
}

Example 82 with JarURLConnection

use of java.net.JarURLConnection in project tomcat by apache.

the class Compiler method isOutDated.

/**
 * Determine if a compilation is necessary by checking the time stamp of the
 * JSP page with that of the corresponding .class or .java file. If the page
 * has dependencies, the check is also extended to its dependents, and so
 * on. This method can by overridden by a subclasses of Compiler.
 *
 * @param checkClass
 *            If true, check against .class file, if false, check against
 *            .java file.
 * @return <code>true</code> if the source generation and compilation
 *  should occur
 */
public boolean isOutDated(boolean checkClass) {
    if (jsw != null && (ctxt.getOptions().getModificationTestInterval() > 0)) {
        if (jsw.getLastModificationTest() + (ctxt.getOptions().getModificationTestInterval() * 1000) > System.currentTimeMillis()) {
            return false;
        }
        jsw.setLastModificationTest(System.currentTimeMillis());
    }
    // Test the target file first. Unless there is an error checking the
    // last modified time of the source (unlikely) the target is going to
    // have to be checked anyway. If the target doesn't exist (likely during
    // startup) this saves an unnecessary check of the source.
    File targetFile;
    if (checkClass) {
        targetFile = new File(ctxt.getClassFileName());
    } else {
        targetFile = new File(ctxt.getServletJavaFileName());
    }
    if (!targetFile.exists()) {
        return true;
    }
    long targetLastModified = targetFile.lastModified();
    if (checkClass && jsw != null) {
        jsw.setServletClassLastModifiedTime(targetLastModified);
    }
    Long jspRealLastModified = ctxt.getLastModified(ctxt.getJspFile());
    if (jspRealLastModified.longValue() < 0) {
        // Something went wrong - assume modification
        return true;
    }
    if (targetLastModified != jspRealLastModified.longValue()) {
        if (log.isDebugEnabled()) {
            log.debug("Compiler: outdated: " + targetFile + " " + targetLastModified);
        }
        return true;
    }
    // directives) have been changed.
    if (jsw == null) {
        return false;
    }
    Map<String, Long> depends = jsw.getDependants();
    if (depends == null) {
        return false;
    }
    for (Entry<String, Long> include : depends.entrySet()) {
        try {
            String key = include.getKey();
            URL includeUrl;
            long includeLastModified = 0;
            if (key.startsWith("jar:jar:")) {
                // Assume we constructed this correctly
                int entryStart = key.lastIndexOf("!/");
                String entry = key.substring(entryStart + 2);
                try (Jar jar = JarFactory.newInstance(new URL(key.substring(4, entryStart)))) {
                    includeLastModified = jar.getLastModified(entry);
                }
            } else {
                if (key.startsWith("jar:") || key.startsWith("file:")) {
                    includeUrl = new URL(key);
                } else {
                    includeUrl = ctxt.getResource(include.getKey());
                }
                if (includeUrl == null) {
                    return true;
                }
                URLConnection iuc = includeUrl.openConnection();
                if (iuc instanceof JarURLConnection) {
                    includeLastModified = ((JarURLConnection) iuc).getJarEntry().getTime();
                } else {
                    includeLastModified = iuc.getLastModified();
                }
                iuc.getInputStream().close();
            }
            if (includeLastModified != include.getValue().longValue()) {
                return true;
            }
        } catch (Exception e) {
            if (log.isDebugEnabled()) {
                log.debug("Problem accessing resource. Treat as outdated.", e);
            }
            return true;
        }
    }
    return false;
}

Example 83 with JarURLConnection

use of java.net.JarURLConnection in project tomcat by apache.

the class JspCompilationContext method getLastModified.

public Long getLastModified(String resource, Jar tagJar) {
    long result = -1;
    URLConnection uc = null;
    try {
        if (tagJar != null) {
            if (resource.startsWith("/")) {
                resource = resource.substring(1);
            }
            result = tagJar.getLastModified(resource);
        } else {
            URL jspUrl = getResource(resource);
            if (jspUrl == null) {
                incrementRemoved();
                return Long.valueOf(result);
            }
            uc = jspUrl.openConnection();
            if (uc instanceof JarURLConnection) {
                JarEntry jarEntry = ((JarURLConnection) uc).getJarEntry();
                if (jarEntry != null) {
                    result = jarEntry.getTime();
                } else {
                    result = uc.getLastModified();
                }
            } else {
                result = uc.getLastModified();
            }
        }
    } catch (IOException e) {
        if (log.isDebugEnabled()) {
            log.debug(Localizer.getMessage("jsp.error.lastModified", getJspFile()), e);
        }
        result = -1;
    } finally {
        if (uc != null) {
            try {
                uc.getInputStream().close();
            } catch (IOException e) {
                if (log.isDebugEnabled()) {
                    log.debug(Localizer.getMessage("jsp.error.lastModified", getJspFile()), e);
                }
                result = -1;
            }
        }
    }
    return Long.valueOf(result);
}

Example 84 with JarURLConnection

use of java.net.JarURLConnection in project blade by biezhi.

the class JarReaderImpl method getClasses.

private Set<ClassInfo> getClasses(final URL url, final String packageDirName, String packageName, final Class<?> parent, final Class<? extends Annotation> annotation, final boolean recursive, Set<ClassInfo> classes) {
    try {
        if (url.toString().startsWith(JAR_FILE) || url.toString().startsWith(WSJAR_FILE)) {
            // Get jar file
            JarFile jarFile = ((JarURLConnection) url.openConnection()).getJarFile();
            // From the jar package to get an enumeration class
            Enumeration<JarEntry> eje = jarFile.entries();
            while (eje.hasMoreElements()) {
                // Get an entity in jar can be a directory and some other documents in the jar package
                // such as META-INF and other documents
                JarEntry entry = eje.nextElement();
                String name = entry.getName();
                // if start with '/'
                if (name.charAt(0) == '/') {
                    name = name.substring(1);
                }
                // If the first half is the same as the defined package name
                if (!name.startsWith(packageDirName)) {
                    continue;
                }
                int idx = name.lastIndexOf('/');
                // If the end of "/" is a package
                if (idx != -1) {
                    // Get the package name and replace "/" with "."
                    packageName = name.substring(0, idx).replace('/', '.');
                }
                // If it can be iterated and is a package
                if (idx == -1 && !recursive) {
                    continue;
                }
                // If it is a .class file and not a directory
                if (!name.endsWith(".class") || entry.isDirectory()) {
                    continue;
                }
                // Remove the following ".class" to get the real class name
                String className = name.substring(packageName.length() + 1, name.length() - 6);
                // Add to classes
                Class<?> clazz = Class.forName(packageName + '.' + className);
                if (null != parent && null != annotation) {
                    if (null != clazz.getSuperclass() && clazz.getSuperclass().equals(parent) && null != clazz.getAnnotation(annotation)) {
                        classes.add(new ClassInfo(clazz));
                    }
                    continue;
                }
                if (null != parent) {
                    if (null != clazz.getSuperclass() && clazz.getSuperclass().equals(parent)) {
                        classes.add(new ClassInfo(clazz));
                    }
                    continue;
                }
                if (null != annotation) {
                    if (null != clazz.getAnnotation(annotation)) {
                        classes.add(new ClassInfo(clazz));
                    }
                    continue;
                }
                classes.add(new ClassInfo(clazz));
            }
        }
    } catch (IOException e) {
        log.error("The scan error when the user to define the view from a jar package file.", e);
    } catch (ClassNotFoundException e) {
        log.error("", e);
    }
    return classes;
}

Example 85 with JarURLConnection

use of java.net.JarURLConnection in project MSEC by Tencent.

the class ClassUtils method loadClasses.

/**
 * �Ӱ�package�л�ȡ���е�Class
 *
 * @param pack
 * @return
 */
public static void loadClasses(String pack) {
    // �Ƿ�ѭ������
    boolean recursive = true;
    // ��ȡ�������� �������滻
    String packageName = pack;
    String packageDirName = packageName.replace('.', '/');
    // ����һ��ö�ٵļ��� ������ѭ�����������Ŀ¼�µ�things
    Enumeration<URL> dirs;
    try {
        dirs = Thread.currentThread().getContextClassLoader().getResources(packageDirName);
        // ѭ��������ȥ
        while (dirs.hasMoreElements()) {
            // ��ȡ��һ��Ԫ��
            URL url = dirs.nextElement();
            // �õ�Э�������
            String protocol = url.getProtocol();
            // ��������ļ�����ʽ�����ڷ�������
            if ("file".equals(protocol)) {
                // ��ȡ��������·��
                String filePath = URLDecoder.decode(url.getFile(), "UTF-8");
                // ���ļ��ķ�ʽɨ���������µ��ļ� ����ӵ�������
                findAndAddClassesInPackageByFile(packageName, filePath, recursive);
            } else if ("jar".equals(protocol)) {
                // �����jar���ļ�
                // ����һ��JarFile
                JarFile jar;
                try {
                    // ��ȡjar
                    jar = ((JarURLConnection) url.openConnection()).getJarFile();
                    // �Ӵ�jar�� �õ�һ��ö����
                    Enumeration<JarEntry> entries = jar.entries();
                    // ͬ���Ľ���ѭ������
                    while (entries.hasMoreElements()) {
                        // ��ȡjar���һ��ʵ�� ������Ŀ¼ ��һЩjar����������ļ� ��META-INF���ļ�
                        JarEntry entry = entries.nextElement();
                        String name = entry.getName();
                        // �������/��ͷ��
                        if (name.charAt(0) == '/') {
                            // ��ȡ������ַ���
                            name = name.substring(1);
                        }
                        // ���ǰ�벿�ֺͶ���İ�����ͬ
                        if (name.startsWith(packageDirName)) {
                            int idx = name.lastIndexOf('/');
                            // �����"/"��β ��һ����
                            if (idx != -1) {
                                // ��ȡ���� ��"/"�滻��"."
                                packageName = name.substring(0, idx).replace('/', '.');
                            }
                            // ������Ե�����ȥ ������һ����
                            if ((idx != -1) || recursive) {
                                // �����һ��.class�ļ� ���Ҳ���Ŀ¼
                                if (name.endsWith(".class") && !entry.isDirectory()) {
                                    // ȥ�������".class" ��ȡ����������
                                    String className = name.substring(packageName.length() + 1, name.length() - 6);
                                    try {
                                        // ��ӵ�classes
                                        Class.forName(packageName + '.' + className);
                                    } catch (ClassNotFoundException e) {
                                        // log
                                        // .error("����û��Զ�����ͼ����� �Ҳ��������.class�ļ�");
                                        e.printStackTrace();
                                    }
                                }
                            }
                        }
                    }
                } catch (IOException e) {
                    // log.error("��ɨ���û�������ͼʱ��jar����ȡ�ļ�����");
                    e.printStackTrace();
                }
            }
        }
    } catch (Throwable e) {
        e.printStackTrace();
    }
}