Method getLastModified

java/org/apache/jasper/compiler/TldCache.java:161–189

(TldResourcePath tldResourcePath)

    private long[] getLastModified(TldResourcePath tldResourcePath) {
        long[] result = new long[2];
        result[0] = -1;
        result[1] = -1;
        try {
            String webappPath = tldResourcePath.getWebappPath();
            if (webappPath != null) {
                // webappPath will be null for JARs containing TLDs that are on
                // the class path but not part of the web application
                URL url = servletContext.getResource(tldResourcePath.getWebappPath());
                URLConnection conn = url.openConnection();
                result[0] = conn.getLastModified();
                if ("file".equals(url.getProtocol())) {
                    // Reading the last modified time opens an input stream so we
                    // need to make sure it is closed again otherwise the TLD file
                    // will be locked until GC runs.
                    conn.getInputStream().close();
                }
            }
            try (Jar jar = tldResourcePath.openJar()) {
                if (jar != null) {
                    result[1] = jar.getLastModified(tldResourcePath.getEntryName());
                }
            }
        } catch (IOException ignore) {
            // Ignore (shouldn't happen)
        }
        return result;
    }

    private static class TaglibXmlCacheEntry {
        private volatile TaglibXml taglibXml;