public void fun(URLConnection connection) { try { connection.connect(); // print header fields Map<String, List<String>> headers = connection.getHeaderFields(); for (Map.Entry<String, List<String>> entry : headers.entrySet()) { String key = entry.getKey(); for (String value : entry.getValue()) System.out.println(key + ": " + value); } // print convenience functions System.out.println("----------"); System.out.println("getContentType: " + connection.getContentType()); System.out.println("getContentLength: " + connection.getContentLength()); System.out.println("getContentEncoding: " + connection.getContentEncoding()); System.out.println("getDate: " + connection.getDate()); System.out.println("getExpiration: " + connection.getExpiration()); System.out.println("getLastModifed: " + connection.getLastModified()); System.out.println("----------"); Scanner in = new Scanner(connection.getInputStream()); // print first ten lines of contents for (int n = 1; in.hasNextLine() && n <= 10; n++) System.out.println(in.nextLine()); if (in.hasNextLine()) System.out.println(". . ."); } catch (IOException e) { e.printStackTrace(); } }
/** * Get the last modification date of an open URLConnection. * * <p>This handles the (broken at some point in the Java libraries) case of the file: protocol. * * @return last modified timestamp "as is" */ public static long getLastModified(URLConnection urlConnection) { try { long lastModified = urlConnection.getLastModified(); if (lastModified == 0 && "file".equals(urlConnection.getURL().getProtocol())) lastModified = new File( URLDecoder.decode( urlConnection.getURL().getFile(), STANDARD_PARAMETER_ENCODING)) .lastModified(); return lastModified; } catch (UnsupportedEncodingException e) { // Should not happen as we are using a required encoding throw new OXFException(e); } }
/** * Decides if the given source is newer than a class. * * @param source the source we may want to compile * @param cls the former class * @return true if the source is newer, false else * @throws IOException if it is not possible to open an connection for the given source * @see #getTimeStamp(Class) */ protected boolean isSourceNewer(URL source, Class cls) throws IOException { long lastMod; // Special handling for file:// protocol, as getLastModified() often reports // incorrect results (-1) if (isFile(source)) { // Coerce the file URL to a File // See ClassNodeResolver.isSourceNewer for another method that replaces '|' with ':'. // WTF: Why is this done and where is it documented? String path = source.getPath().replace('/', File.separatorChar).replace('|', ':'); File file = new File(path); lastMod = file.lastModified(); } else { URLConnection conn = source.openConnection(); lastMod = conn.getLastModified(); conn.getInputStream().close(); } long classTime = getTimeStamp(cls); return classTime + config.getMinimumRecompilationInterval() < lastMod; }