读取MANIFEST.MF中Bundle-SymbolicName的值

    /**
     * Function :readManifestContext
     * <p>
     * Description :读取MANIFEST.MF中Bundle-SymbolicName的值
     * <p>
     * Author  2009-3-17
     * @param filePath
     *            文件路径
     * @return
     * @throws Exception
     */
    public static String getBundleSymbolicNameAndVersion(String filePath)
    {
        if (filePath == null || filePath.equals("")
                || !filePath.endsWith(".jar"))
        {
            return null;
        }

        try
        {
            JarFile jf = new JarFile(filePath);
            Manifest mf = jf.getManifest();
            Attributes attributes = mf.getMainAttributes();
            String bundleSymbolicName = attributes
                    .getValue(BUNDLE_SYMBOLIC_NAME);
            if (bundleSymbolicName != null && !bundleSymbolicName.equals(""))
            {
                bundleSymbolicName = bundleSymbolicName.split(";")[0];
                if (bundleSymbolicName != null
                        && !bundleSymbolicName.equals(""))
                {
                    String bundleVersion = attributes.getValue(BUNDLE_VERSION);
                    return bundleSymbolicName
                            + (bundleVersion == null ? "" : " ("
                                    + bundleVersion + ") ");
                }
            }
            return null;
        }
        catch (IOException e)
        {
            return null;
        }
    }