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;
}
