Java SeekableByteChannel.close方法代碼示例

import java.nio.channels.SeekableByteChannel; //導入方法依賴的package包/類
/**
 * Closes the file.
 * This closes any allocated input streams reading from this ZIP file.
 *
 * @throws IOException if an error occurs closing the file.
 */
@Override
@DischargesObligation
public void close() throws IOException {
    final SeekableByteChannel channel = this.channel;
    if (null != channel) {
        channel.close();
        this.channel = null;
    }
}
 

import java.nio.channels.SeekableByteChannel; //導入方法依賴的package包/類
public static void main(String[] args) throws Exception {

        AuthTimeWithHash a1 = new AuthTimeWithHash(client, server, time(0), 0,
                "1111111111111111");
        AuthTimeWithHash a2 = new AuthTimeWithHash(client, server, time(0), 0,
                "2222222222222222");
        KerberosTime now = new KerberosTime(time(0)*1000L);

        // When all new styles, must exact match
        ReplayCache cache = ReplayCache.getInstance("dfl:./c1");
        cache.checkAndStore(now, a1);
        cache.checkAndStore(now, a2);

        // When only old style in cache, partial match
        cache = ReplayCache.getInstance("dfl:./c2");
        cache.checkAndStore(now, a1);
        // A small surgery to remove the new style from the cache file
        SeekableByteChannel ch = Files.newByteChannel(Paths.get("c2"),
                StandardOpenOption.WRITE,
                StandardOpenOption.READ);
        ch.position(6);
        ch.write(ByteBuffer.wrap(a1.encode(false)));
        ch.truncate(ch.position());
        ch.close();
        try {
            cache.checkAndStore(now, a2);
            throw new Exception();
        } catch (KrbException ke) {
            // Correct
            System.out.println(ke);
        }
    }
 

import java.nio.channels.SeekableByteChannel; //導入方法依賴的package包/類
public static void main(String[] args) throws Exception {

        AuthTimeWithHash a1 = new AuthTimeWithHash(client, server, time(0), 0,
                "HASH", "1111111111111111");
        AuthTimeWithHash a2 = new AuthTimeWithHash(client, server, time(0), 0,
                "HASH", "2222222222222222");
        KerberosTime now = new KerberosTime(time(0)*1000L);

        // When all new styles, must exact match
        ReplayCache cache = ReplayCache.getInstance("dfl:./c1");
        cache.checkAndStore(now, a1);
        cache.checkAndStore(now, a2);

        // When only old style in cache, partial match
        cache = ReplayCache.getInstance("dfl:./c2");
        cache.checkAndStore(now, a1);
        // A small surgery to remove the new style from the cache file
        SeekableByteChannel ch = Files.newByteChannel(Paths.get("c2"),
                StandardOpenOption.WRITE,
                StandardOpenOption.READ);
        ch.position(6);
        ch.write(ByteBuffer.wrap(a1.encode(false)));
        ch.truncate(ch.position());
        ch.close();
        try {
            cache.checkAndStore(now, a2);
            throw new Exception();
        } catch (KrbException ke) {
            // Correct
            System.out.println(ke);
        }
    }
 

import java.nio.channels.SeekableByteChannel; //導入方法依賴的package包/類
/**
 * Creates a new RAES read-only channel.
 *
 * @param  param the {@link RaesParameters} required to access the RAES
 *         type actually found in the file.
 *         If the class of this parameter does not match the required
 *         parameter interface according to the RAES type found in the
 *         file, but is an instance of the {@link RaesParametersProvider}
 *         interface, then it gets queried to find the required RAES
 *         parameters.
 *         This algorithm gets recursively applied.
 * @param  source the source for reading the RAES file from.
 * @return A new RAES read-only channel.
 * @throws RaesParametersException If no RAES parameter can be found which
 *         match the type of RAES file in the given channel.
 * @throws RaesException If the file is not RAES compatible.
 * @throws EOFException on unexpected end-of-file.
 * @throws IOException on any I/O error.
 */
@CreatesObligation
public static RaesReadOnlyChannel create(
        final RaesParameters param,
        final Source source)
throws RaesParametersException, RaesException, EOFException, IOException {
    final SeekableByteChannel channel = source.channel();
    try {
        return create(param, channel);
    } catch (final Throwable ex) {
        try {
            channel.close();
        } catch (final IOException ex2) {
            ex.addSuppressed(ex2);
        }
        throw ex;
    }
}