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MINA经典入门例子----Time Server

时间:2015-08-11 00:00:24      阅读:242      评论:0      收藏:0      [点我收藏+]

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原文地址 http://blog.sina.com.cn/s/blog_720bdf0501010b8r.html

貌似java的IO、NIO的入门例子都有相关的Time Server Demo。本例为MINA官方Demo翻译过来而已。

  MINA百科:

   Apache MINA(Multipurpose Infrastructure for Network Applications) 是 Apache 组织一个较新的项目,它为开发高性能和高可用性的网络应用程序提供了非常便利的框架。当前发行的 MINA 版本支持基于 Java NIO 技术的 TCP/UDP 应用程序开发、串口通讯程序(只在最新的预览版中提供),MINA 所支持的功能也在进一步的扩展中。

  目前正在使用 MINA 的软件包括有:Apache Directory Project、AsyncWeb、AMQP(Advanced Message Queuing Protocol)、RED5 Server(Macromedia Flash Media RTMP)、ObjectRADIUS、Openfire 等等。

      目前最新版本为2.02 Release,官方网站为:http://mina.apache.org/

      MINA框架的特点有:基于java NIO类库开发;采用非阻塞方式的异步传输;事件驱动;支持批量数据传输;支持TCP、UDP协议;控制反转的设计模式(支持Spring);采用优雅的松耦合架构;可灵活的加载过滤器机制;单元测试更容易实现;可自定义线程的数量,以提高运行于多处理器上的性能;采用回调的方式完成调用,线程的使用更容易。 
     MINA框架的常用类 
类NioSocketAcceptor用于创建服务端监听; 
类NioSocketConnector用于创建客户端连接; 
类IoSession用来保存会话属性和发送消息; 
类IoHandlerAdapter用于定义业务逻辑,常用的方法有: 
方法 定义 
sessionCreated() 当会话创建时被触发 
sessionOpened() 当会话开始时被触发 
sessionClosed() 当会话关闭时被触发 
sessionIdle() 当会话空闲时被触发 
exceptionCaught() 当接口中其他方法抛出异常未被捕获时触发此方法 
messageRecieved() 当接收到消息后被触发 
messageSent() 当发送消息后被触发

      Time Server测试示例:

      测试环境:Eclipse,jdk1.6,所需jar包,slf4j-api-1.5.11.jar、slf4j-jdk14-1.5.2.jar、mina-core-2.0.2.jar。 
      1、服务器端:

      1)服务器Server代码:

package org.apache.mina.example.gettingstarted.timeserver;

import java.io.IOException;
import java.net.InetSocketAddress;
import java.nio.charset.Charset;

import org.apache.mina.core.service.IoAcceptor;
import org.apache.mina.core.session.IdleStatus;
import org.apache.mina.filter.codec.ProtocolCodecFilter;
import org.apache.mina.filter.codec.textline.TextLineCodecFactory;
import org.apache.mina.filter.logging.LoggingFilter;
import org.apache.mina.transport.socket.nio.NioSocketAcceptor;

public class MinaTimeServer {
private static final int PORT = 9123;

public static void main(String[] args) throws IOException {
  // 创建服务器监听

  IoAcceptor acceptor = new NioSocketAcceptor();

  // 增加日志过滤器

  acceptor.getFilterChain().addLast( "logger", new LoggingFilter() );
  //增加编码过滤器

  acceptor.getFilterChain().addLast( "codec", new ProtocolCodecFilter( new TextLineCodecFactory( Charset.forName( "UTF-8" ))));

  //指定业务逻辑处理器

  acceptor.setHandler( new TimeServerHandler() );

  // 设置buffer的长度

  acceptor.getSessionConfig().setReadBufferSize( 2048 );

  //设置连接超时时间
  acceptor.getSessionConfig().setIdleTime( IdleStatus.BOTH_IDLE, 10 );

  // 绑定端口

  acceptor.bind( new InetSocketAddress(PORT) );
 }
}

 

 2)业务逻辑处理器代码:

技术分享
 1 package org.apache.mina.example.gettingstarted.timeserver;
 2 
 3 import java.util.Date;
 4 
 5 import org.apache.mina.core.service.IoHandlerAdapter;
 6 import org.apache.mina.core.session.IdleStatus;
 7 import org.apache.mina.core.session.IoSession;
 8 
 9 public class TimeServerHandler extends IoHandlerAdapter
10 {
11 
12 //连接异常时处理方法
13 @Override
14 public void exceptionCaught( IoSession session, Throwable cause ) throws Exception
15 {
16 cause.printStackTrace();
17 }
18 
19 
20 @Override
21 public void messageReceived( IoSession session, Object message ) throws Exception
22 {
23 String str = message.toString();
24 
25 if( str.trim().equalsIgnoreCase("quit") ) {
26 session.close(true);
27 return;
28 }
29 
30 Date date = new Date();
31 session.write( date.toString() );
32 System.out.println("Message written...");
33 }
34 
35 
36 @Override
37 public void sessionIdle( IoSession session, IdleStatus status ) throws Exception
38 {
39 System.out.println( "IDLE " + session.getIdleCount( status ));
40 }
41 }
View Code

 

 

2、客户端测试代码

1)客户端代码

 1 package com.kdiller.mina;
 2 
 3 import java.net.InetSocketAddress;
 4 import java.nio.charset.Charset;
 5 
 6 import org.apache.mina.core.future.ConnectFuture;
 7 import org.apache.mina.filter.codec.ProtocolCodecFilter;
 8 import org.apache.mina.filter.codec.textline.TextLineCodecFactory;
 9 import org.apache.mina.filter.logging.LoggingFilter;
10 import org.apache.mina.transport.socket.nio.NioSocketConnector;
11 
12 public class MinaTimeClient {
13  public static void main(String[] args) {
14   // 创建客户端连接器.
15   NioSocketConnector connector = new NioSocketConnector();
16   connector.getFilterChain().addLast("logger", new LoggingFilter());
17   connector.getFilterChain().addLast(
18     "codec",
19     new ProtocolCodecFilter(new TextLineCodecFactory(Charset
20       .forName("UTF-8")))); // 设置编码过滤器
21   connector.setConnectTimeout(30);
22   connector.setHandler(new TimeClientHandler());// 设置事件处理器
23   ConnectFuture cf = connector.connect(new InetSocketAddress("127.0.0.1",
24     9123));// 建立连接
25   cf.awaitUninterruptibly();// 等待连接创建完成
26   cf.getSession().write("hello");// 发送消息
27   cf.getSession().write("quit");// 发送消息
28   cf.getSession().getCloseFuture().awaitUninterruptibly();// 等待连接断开
29   connector.dispose();
30  }
31 }

 

2)客户端处理器

 1 package com.kdiller.mina;
 2 
 3 import org.apache.mina.core.service.IoHandlerAdapter;
 4 import org.apache.mina.core.session.IdleStatus;
 5 import org.apache.mina.core.session.IoSession;
 6 
 7 public class TimeClientHandler extends IoHandlerAdapter {
 8  public TimeClientHandler() {
 9  }
10 
11  @Override
12  public void messageReceived(IoSession session, Object message)
13    throws Exception {
14   System.out.println("messageReceived method was called!");
15   System.out.println(message);// 显示接收到的消息
16  }
17 
18  @Override
19  public void exceptionCaught(IoSession session, Throwable cause)
20    throws Exception {
21   // TODO Auto-generated method stub
22   super.exceptionCaught(session, cause);
23  }
24 
25  @Override
26  public void messageSent(IoSession session, Object message) throws Exception {
27   // TODO Auto-generated method stub
28   super.messageSent(session, message);
29   System.out.println("messageSent method was called!");
30   System.out.println(message);
31  }
32 
33  @Override
34  public void sessionClosed(IoSession session) throws Exception {
35   // TODO Auto-generated method stub
36   super.sessionClosed(session);
37   System.out.println("sessionClosed method was called!");
38  }
39 
40  @Override
41  public void sessionCreated(IoSession session) throws Exception {
42   // TODO Auto-generated method stub
43   super.sessionCreated(session);
44   System.out.println("sessionCreated method was called!");
45  }
46 
47  @Override
48  public void sessionIdle(IoSession session, IdleStatus status)
49    throws Exception {
50   // TODO Auto-generated method stub
51   super.sessionIdle(session, status);
52  }
53 
54  @Override
55  public void sessionOpened(IoSession session) throws Exception {
56   // TODO Auto-generated method stub
57   super.sessionOpened(session);
58   System.out.println("sessionOpened method was called!");
59  }
60  
61 }

 

MINA经典入门例子----Time Server

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原文地址:http://www.cnblogs.com/dengmj/p/4719635.html

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