mina2 的例子

从网上找了2个例子，运行好用，地址忘了，罪过~

 

http://www.cnblogs.com/liunx/archive/2009/09/10/1564353.html

基于Apache MINA 2.0的程序，需要JDK 5.0以上版本，还需要以下软件：

（1）MINA 2.x Core

下载地址：http://mina.apache.org/downloads.html

（2）SLF4J 1.3.0 or greater

下载地址：http://www.slf4j.org/download.html

这里需要用到两个 SLF4J 的jar包：slf4j-api.jar 和 slf4j-jdk14.jar。

 

打开telnet 10010

输入算数表达式，可以得到计算结果;运行服务端和客户端，在客户端得到执行结果。

 

遗留问题：客户端的这几行代码是什么意思？

 

cf.awaitUninterruptibly(); cf.getSession().getCloseFuture().awaitUninterruptibly(); connector.dispose();

 

 

CalculatorServer.java

public class CalculatorServer { private static final int PORT = 10010; private static final Logger LOGGER = LoggerFactory .getLogger(CalculatorServer.class); public static void main(String[] args) throws IOException { IoAcceptor acceptor = new NioSocketAcceptor(); acceptor.getFilterChain().addLast("logger", new LoggingFilter()); acceptor.getFilterChain().addLast( "codec", new ProtocolCodecFilter(new TextLineCodecFactory(Charset .forName("UTF-8")))); acceptor.setHandler(new CalculatorHandler()); acceptor.bind(new InetSocketAddress(PORT)); LOGGER.info("计算器服务已启动，端口是" + PORT); } }

 

CalculatorHandler.java

 public class CalculatorHandler extends IoHandlerAdapter { private static final Logger LOGGER = LoggerFactory .getLogger(CalculatorHandler.class); private ScriptEngine jsEngine = null; public CalculatorHandler() { ScriptEngineManager sfm = new ScriptEngineManager(); jsEngine = sfm.getEngineByName("JavaScript"); if (jsEngine == null) { throw new RuntimeException("找不到 JavaScript 引擎。"); } } public void exceptionCaught(IoSession session, Throwable cause) throws Exception { LOGGER.warn(cause.getMessage(), cause); } public void messageReceived(IoSession session, Object message) throws Exception { String expression = message.toString(); if ("quit".equalsIgnoreCase(expression.trim())) { session.close(true); return; } try { Object result = jsEngine.eval(expression); session.write(result.toString()); } catch (ScriptException e) { LOGGER.warn(e.getMessage(), e); session.write("Wrong expression, try again."); } } }

 

客户端

CalculatorClient.java

public class CalculatorClient { public static void main(String[] args) { IoConnector connector = new NioSocketConnector(); // 创建接受数据的过滤器 DefaultIoFilterChainBuilder chain = connector.getFilterChain(); // 设定这个过滤器将一行一行(/r/n)的读取数据 chain.addLast("myChin", new ProtocolCodecFilter( new TextLineCodecFactory())); // 服务器的消息处理器：一个SamplMinaServerHander对象 connector.setHandler(new SamplMinaClientHander()); // set connect timeout connector.setConnectTimeoutMillis(100000); // 连接到服务器： ConnectFuture cf = connector.connect(new InetSocketAddress("localhost", 10010)); // Wait for the connection attempt to be finished. cf.awaitUninterruptibly(); cf.getSession().getCloseFuture().awaitUninterruptibly(); connector.dispose(); } }

 

SamplMinaClientHander.java

public class SamplMinaClientHander extends IoHandlerAdapter { @Override public void exceptionCaught(IoSession arg0, Throwable arg1) throws Exception { // TODO Auto-generated method stub } /** * 当客户端接受到消息时 */ @Override public void messageReceived(IoSession session, Object message) throws Exception { // 我们已设定了服务器的消息规则是一行一行读取，这里就可以转为String: String s = (String) message; // Writer the received data back to remote peer System.out.println("服务器发来的收到消息: " + s); // 测试将消息回送给客户端 // session.write(s); } @Override public void messageSent(IoSession arg0, Object arg1) throws Exception { // TODO Auto-generated method stub } /** * 当一个客户端被关闭时 */ @Override public void sessionClosed(IoSession session) throws Exception { System.out.println("one client Disconnect"); } @Override public void sessionCreated(IoSession arg0) throws Exception { // TODO Auto-generated method stub arg0.write("4*3"); } @Override public void sessionIdle(IoSession arg0, IdleStatus arg1) throws Exception { // TODO Auto-generated method stub } /** * 当一个客户端连接进入时 */ @Override public void sessionOpened(IoSession session) throws Exception { // System.out.println("incomming client:" + session.getRemoteAddress()); // session.write("我来啦"); } }