注: mina 使用slf4j作为日志的记录
package org.apache.mina.example.reverser;
21
22 import java.net.InetSocketAddress;
23 import java.nio.charset.Charset;
24
25 import org.apache.mina.filter.codec.ProtocolCodecFilter;
26 import org.apache.mina.filter.codec.textline.TextLineCodecFactory;
27 import org.apache.mina.filter.logging.LoggingFilter;
28 import org.apache.mina.transport.socket.nio.NioSocketAcceptor;
29
30 /**
31 * (<b>Entry point</b>) Reverser server which reverses all text lines from
32 * clients.
33 *
34 * @author <a href="http://mina.apache.org">Apache MINA Project</a>
35 */
36 public class Main {
37 private static final int PORT = 8080;
38
39 public static void main(String[] args) throws Exception {
40 NioSocketAcceptor acceptor = new NioSocketAcceptor();
41
42 // Prepare the configuration
43 acceptor.getFilterChain().addLast("logger", new LoggingFilter());
44 acceptor.getFilterChain().addLast(
45 "codec",
46 new ProtocolCodecFilter(new TextLineCodecFactory(Charset
47 .forName("UTF-8"))));
48
49 // Bind
50 acceptor.setHandler(new ReverseProtocolHandler());
51 acceptor.bind(new InetSocketAddress(PORT));
52
53 System.out.println("Listening on port " + PORT);
54 }
55 }
@Override 覆盖那几个方法,其实不一定用extends 用implement 能列出所有的方法
package org.apache.mina.example.reverser;
21
22 import org.apache.mina.core.service.IoHandler;
23 import org.apache.mina.core.service.IoHandlerAdapter;
24 import org.apache.mina.core.session.IoSession;
25
26 /**
27 * {@link IoHandler} implementation of reverser server protocol.
28 *
29 * @author <a href="http://mina.apache.org">Apache MINA Project</a>
30 */
31 public class ReverseProtocolHandler extends IoHandlerAdapter {
32 @Override
33 public void exceptionCaught(IoSession session, Throwable cause) {
34 // Close connection when unexpected exception is caught.
35 session.close(true);
36 }
37
38 @Override
39 public void messageReceived(IoSession session, Object message) {
40 // Reverse reveiced string
41 String str = message.toString();
42 StringBuilder buf = new StringBuilder(str.length());
43 for (int i = str.length() - 1; i >= 0; i--) {
44 buf.append(str.charAt(i));
45 }
46
47 // and write it back.
48 session.write(buf.toString()); // 写回,这样可以显示
49 }
50 }
下面是另一个例子 public class Main {
37 private static final int PORT = 8080;
38
39 public static void main(String[] args) throws Exception {
40 NioSocketAcceptor acceptor = new NioSocketAcceptor();
41
42 // Prepare the configuration
43 acceptor.getFilterChain().addLast("logger", new LoggingFilter());
44 acceptor.getFilterChain().addLast(
45 "codec",
46 new ProtocolCodecFilter(new TextLineCodecFactory(Charset
47 .forName("UTF-8"))));
48
49 // Bind
50 acceptor.setHandler(new ReverseProtocolHandler());
51 acceptor.bind(new InetSocketAddress(PORT));
52
53 System.out.println("Listening on port " + PORT);
54 }
55 }
public class ReverseProtocolHandler extends IoHandlerAdapter {
32 @Override
33 public void exceptionCaught(IoSession session, Throwable cause) {
34 // Close connection when unexpected exception is caught.
35 session.close(true);
36 }
37
38 @Override
39 public void messageReceived(IoSession session, Object message) {
40 // Reverse reveiced string
41 String str = message.toString();
42 StringBuilder buf = new StringBuilder(str.length());
43 for (int i = str.length() - 1; i >= 0; i--) {
44 buf.append(str.charAt(i));
45 }
46
47 // and write it back.
48 session.write(buf.toString());
49 }
50 }
第三个例子 server 端基本都一样
public class Main {
37 private static final int PORT = 8080;
38
39 public static void main(String[] args) throws Exception {
40 NioSocketAcceptor acceptor = new NioSocketAcceptor();
41
42 // Prepare the configuration
43 acceptor.getFilterChain().addLast("logger", new LoggingFilter());
44 acceptor.getFilterChain().addLast(
45 "codec",
46 new ProtocolCodecFilter(new TextLineCodecFactory(Charset
47 .forName("UTF-8"))));
48
49 // Bind
50 acceptor.setHandler(new ReverseProtocolHandler());
51 acceptor.bind(new InetSocketAddress(PORT));
52
53 System.out.println("Listening on port " + PORT);
54 }
55 }
public class ReverseProtocolHandler extends IoHandlerAdapter {
32 @Override
33 public void exceptionCaught(IoSession session, Throwable cause) {
34 // Close connection when unexpected exception is caught.
35 session.close(true);
36 }
37
38 @Override
39 public void messageReceived(IoSession session, Object message) {
40 // Reverse reveiced string
41 String str = message.toString();
42 StringBuilder buf = new StringBuilder(str.length());
43 for (int i = str.length() - 1; i >= 0; i--) {
44 buf.append(str.charAt(i));
45 }
46
47 // and write it back.
48 session.write(buf.toString());
49 }
50 }
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