apache Mina开发实现多人聊天室程序命令行版本

最近开发最代码的一些小项目模块：搜索和邮件，由于服务器资源只有2g内存，而且感觉就一个http接口提供启动一个tomcat服务确实有些重，于是调研过程中了解到了apache的mina项目，基本满足了目前的需求，轻量级，快速部署。

根据csdn的博客总结分享一个由mina实现的多人聊天室程序吧，不过是命令行版本的，但对于入门mina开发来说足够了。

项目截图：

运行截图：

启动com.zuidaima.mina.server.MinaServer.java和多个com.zuidaima.mina.client.RunClient.java实例后

Server客户端接收信息：

2014-11-27 14:41:18,353 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 创建一个新连接：/192.168.5.76:53903 ---
2014-11-27 14:41:18,357 [NioProcessor-2] INFO  [com.zuidaima.mina.server.code.CharsetEncoder]
--- #############字符编码############ ---
2014-11-27 14:41:18,362 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 打开一个session：1#0 ---
2014-11-27 14:41:18,365 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 服务器发送消息： welcome to the chat room ! ---
2014-11-27 14:41:18,368 [NioProcessor-2] INFO  [com.zuidaima.mina.server.code.CharsetDecoder]
--- #########decode######### ---
2014-11-27 14:41:18,368 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 服务器接收到数据： 连接服务器成功！
 ---
2014-11-27 14:41:18,380 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 转发 messageReceived: 2014-11-27 02:41:18	连接服务器成功！
 ---
2014-11-27 14:41:18,380 [NioProcessor-2] INFO  [com.zuidaima.mina.server.code.CharsetEncoder]
--- #############字符编码############ ---
2014-11-27 14:41:18,381 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 服务器发送消息： 2014-11-27 02:41:18	连接服务器成功！
 ---
2014-11-27 14:41:21,636 [NioProcessor-3] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 创建一个新连接：/192.168.5.76:53926 ---
2014-11-27 14:41:21,636 [NioProcessor-3] INFO  [com.zuidaima.mina.server.code.CharsetEncoder]
--- #############字符编码############ ---
2014-11-27 14:41:21,637 [NioProcessor-3] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 打开一个session：2#0 ---
2014-11-27 14:41:21,637 [NioProcessor-3] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 服务器发送消息： welcome to the chat room ! ---
2014-11-27 14:41:21,666 [NioProcessor-3] INFO  [com.zuidaima.mina.server.code.CharsetDecoder]
--- #########decode######### ---
2014-11-27 14:41:21,666 [NioProcessor-3] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 服务器接收到数据： 连接服务器成功！
 ---
2014-11-27 14:41:21,667 [NioProcessor-3] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 转发 messageReceived: 2014-11-27 02:41:21	连接服务器成功！
 ---
2014-11-27 14:41:21,667 [NioProcessor-3] INFO  [com.zuidaima.mina.server.code.CharsetEncoder]
--- #############字符编码############ ---
2014-11-27 14:41:21,667 [NioProcessor-3] INFO  [com.zuidaima.mina.server.code.CharsetEncoder]
--- #############字符编码############ ---
2014-11-27 14:41:21,667 [NioProcessor-3] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 服务器发送消息： 2014-11-27 02:41:21	连接服务器成功！
 ---
2014-11-27 14:41:21,667 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 服务器发送消息： 2014-11-27 02:41:21	连接服务器成功！
 ---
2014-11-27 14:41:51,965 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 当前连接/192.168.5.76:53903处于空闲状态：both idle ---
2014-11-27 14:41:51,965 [NioProcessor-3] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 当前连接/192.168.5.76:53926处于空闲状态：both idle ---
2014-11-27 14:42:22,211 [NioProcessor-3] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 当前连接/192.168.5.76:53926处于空闲状态：both idle ---
2014-11-27 14:42:22,213 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 当前连接/192.168.5.76:53903处于空闲状态：both idle ---
2014-11-27 14:42:52,376 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 当前连接/192.168.5.76:53903处于空闲状态：both idle ---
2014-11-27 14:42:52,381 [NioProcessor-3] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 当前连接/192.168.5.76:53926处于空闲状态：both idle ---
2014-11-27 14:43:22,532 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 当前连接/192.168.5.76:53903处于空闲状态：both idle ---
2014-11-27 14:43:22,538 [NioProcessor-3] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 当前连接/192.168.5.76:53926处于空闲状态：both idle ---
2014-11-27 14:43:51,847 [NioProcessor-2] INFO  [com.zuidaima.mina.server.code.CharsetDecoder]
--- #########decode######### ---
2014-11-27 14:43:51,847 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 服务器接收到数据： 张三我来了
 ---
2014-11-27 14:43:51,848 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 转发 messageReceived: 2014-11-27 02:43:51	张三我来了
 ---
2014-11-27 14:43:51,848 [NioProcessor-2] INFO  [com.zuidaima.mina.server.code.CharsetEncoder]
--- #############字符编码############ ---
2014-11-27 14:43:51,848 [NioProcessor-2] INFO  [com.zuidaima.mina.server.code.CharsetEncoder]
--- #############字符编码############ ---
2014-11-27 14:43:51,851 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 服务器发送消息： 2014-11-27 02:43:51	张三我来了
 ---
2014-11-27 14:43:51,849 [NioProcessor-3] INFO  [com.zuidaima.mina.server.message.ServerMessageHandler]
--- 服务器发送消息： 2014-11-27 02:43:51	张三我来了
 ---

张三客户端接收信息：

2014-11-27 14:41:18,358 [main] INFO  [com.zuidaima.mina.server.code.CharsetEncoder]
--- #############字符编码############ ---
2014-11-27 14:41:18,363 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ClientMessageHandlerAdapter]
--- messageSent 客户端发送消息：连接服务器成功！ ---
2014-11-27 14:41:18,367 [NioProcessor-2] INFO  [com.zuidaima.mina.server.code.CharsetDecoder]
--- #########decode######### ---
2014-11-27 14:41:18,367 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ClientMessageHandlerAdapter]
--- client receive a message is : welcome to the chat room !
 ---
2014-11-27 14:41:18,381 [NioProcessor-2] INFO  [com.zuidaima.mina.server.code.CharsetDecoder]
--- #########decode######### ---
2014-11-27 14:41:18,381 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ClientMessageHandlerAdapter]
--- client receive a message is : 2014-11-27 02:41:18	连接服务器成功！

 ---
2014-11-27 14:41:21,668 [NioProcessor-2] INFO  [com.zuidaima.mina.server.code.CharsetDecoder]
--- #########decode######### ---
2014-11-27 14:41:21,668 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ClientMessageHandlerAdapter]
--- client receive a message is : 2014-11-27 02:41:21	连接服务器成功！

 ---
张三我来了
2014-11-27 14:43:51,845 [main] INFO  [com.zuidaima.mina.server.code.CharsetEncoder]
--- #############字符编码############ ---
2014-11-27 14:43:51,846 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ClientMessageHandlerAdapter]
--- messageSent 客户端发送消息：张三我来了 ---
2014-11-27 14:43:51,852 [NioProcessor-2] INFO  [com.zuidaima.mina.server.code.CharsetDecoder]
--- #########decode######### ---
2014-11-27 14:43:51,852 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ClientMessageHandlerAdapter]
--- client receive a message is : 2014-11-27 02:43:51	张三我来了

 ---

李四客户端接收信息：

2014-11-27 14:41:21,661 [main] INFO  [com.zuidaima.mina.server.code.CharsetEncoder]
--- #############字符编码############ ---
2014-11-27 14:41:21,661 [NioProcessor-2] INFO  [com.zuidaima.mina.server.code.CharsetDecoder]
--- #########decode######### ---
2014-11-27 14:41:21,662 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ClientMessageHandlerAdapter]
--- client receive a message is : welcome to the chat room !
 ---
2014-11-27 14:41:21,666 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ClientMessageHandlerAdapter]
--- messageSent 客户端发送消息：连接服务器成功！ ---
2014-11-27 14:41:21,668 [NioProcessor-2] INFO  [com.zuidaima.mina.server.code.CharsetDecoder]
--- #########decode######### ---
2014-11-27 14:41:21,668 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ClientMessageHandlerAdapter]
--- client receive a message is : 2014-11-27 02:41:21	连接服务器成功！

 ---
2014-11-27 14:43:51,850 [NioProcessor-2] INFO  [com.zuidaima.mina.server.code.CharsetDecoder]
--- #########decode######### ---
2014-11-27 14:43:51,851 [NioProcessor-2] INFO  [com.zuidaima.mina.server.message.ClientMessageHandlerAdapter]
--- client receive a message is : 2014-11-27 02:43:51	张三我来了

 ---

原文：http://blog.csdn.net/ibm_hoojo/article/details/7817303