我分别使用MINA的两个版本做了实验:0.9和1.0.将我实现的过程及遇到的问题分别介绍一下:
运行环境:winXP,eclipse3.2.1,jdk 1.4.2
一、MINA0.9
引用的包:
mina-0.9.0.jar
slf4j-simple.jar
类文件两个:
ReverseEchoServerHandler.java,用来实现IoHandlerAdapter。
import org.apache.mina.common.IoHandlerAdapter; import org.apache.mina.common.IoSession; public class ReverseEchoServerHandler extends IoHandlerAdapter { /* (non-Javadoc) * @see org.apache.mina.common.IoHandlerAdapter#exceptionCaught(org.apache.mina.common.IoSession, java.lang.Throwable) */ public void exceptionCaught(IoSession session, Throwable arg1) throws Exception { session.close(); } /* (non-Javadoc) * @see org.apache.mina.common.IoHandlerAdapter#messageReceived(org.apache.mina.common.IoSession, java.lang.Object) */ public void messageReceived(IoSession session, Object message) throws Exception { String m = (String)message; StringBuffer buf = new StringBuffer();StringBuilder for(int i = m.length() -1;i>=0;i--){ buf.append(m.charAt(i)); } session.write(buf.toString()); } }
ReverseEchoServer.java
import java.nio.charset.Charset; import org.apache.mina.common.DefaultIoFilterChainBuilder; import org.apache.mina.common.TransportType; import org.apache.mina.filter.LoggingFilter; import org.apache.mina.filter.codec.ProtocolCodecFilter; import org.apache.mina.filter.codec.textline.TextLineCodecFactory; import org.apache.mina.registry.Service; import org.apache.mina.registry.ServiceRegistry; import org.apache.mina.registry.SimpleServiceRegistry; public class ReverseEchoServer { public static void main(String[] args) throws Exception{ ServiceRegistry registry = new SimpleServiceRegistry(); Service service = new Service("reverse_echo",TransportType.SOCKET,8081); DefaultIoFilterChainBuilder chain = new DefaultIoFilterChainBuilder(); chain.addLast("codec", new ProtocolCodecFilter(new TextLineCodecFactory(Charset.forName("UTF-8")))); chain.addLast("logger", new LoggingFilter()); registry.bind(service,new ReverseEchoServerHandler(), chain); } }
刚开始时仅使用了mina-0.9.0.jar包,结果总是报错,原来mina的log使用了slf4j,所以还需要这个包.
运行ReverseEchoServer。
用PuTTY看一下效果吧。
二、mina1.0
MINA的第一个例子终于能运行了__2