基于tcp的Socket实例

package cn.com.xinli.sms.socket.tcp.server;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.apache.log4j.Logger;
public class SocketServer {
 Logger log = Logger.getLogger(SocketServer.class);
    private int port=80;//默认值
    private ServerSocket serverSocket;
    private ExecutorService executorService;//线程池
    private int POOL_SIZE=10;//单个CPU线程池大小
    
  public SocketServer(int _prot,int skt_pool_size){
      if(skt_pool_size > 0){
       POOL_SIZE=skt_pool_size;
      }
      if(_prot>0){
       port= _prot;
      }else{
       log.error("参数错误，端口号："+_prot+"无法识别,系统默认监听端口："+port);
      }
         try {
    serverSocket=new ServerSocket(port);
    executorService=Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors()*POOL_SIZE);
    log.info("INFO: CPU个数"+Runtime.getRuntime().availableProcessors()+",线程池大小("+Runtime.getRuntime().availableProcessors()+"*"+POOL_SIZE+")="+String.valueOf(Runtime.getRuntime().availableProcessors()*POOL_SIZE));
       log.info("INFO: CRM socket server at "+port+" port  run.");
   } catch (IOException e) {
    log.error("服务启动错误，启动监听错误，端口可能占用。",e);
   }
     }
  
  public void service(){
         while(true){
             Socket socket=null;
             try {
              if(serverSocket==null){
               return ;
              }
                 socket=serverSocket.accept();
                 socket.setSoTimeout(8000);
                 executorService.execute(new Handler(socket));
             } catch (Exception e) {
                 log.error("",e);
             }
         }
      }
}

class Handler implements Runnable{
 Logger log = Logger.getLogger(Handler.class);
    private Socket socket;
    public Handler(Socket socket){
        this.socket=socket;
    }
    private PrintWriter getWriter(Socket socket) throws IOException{
        OutputStream socketOut=socket.getOutputStream();
        return new PrintWriter(socketOut,true);
    }
    private OutputStream getWriterSocketOut(Socket socket) throws IOException{
        OutputStream socketOut=socket.getOutputStream();
        return socketOut;
    }
    private BufferedReader getBufferedReader(Socket socket) throws IOException{
        InputStream socketIn=socket.getInputStream();
        return new BufferedReader(new InputStreamReader(socketIn));
    }
    public void run(){
     long begingtime = System.currentTimeMillis();
     log.info("\nNew client request "+socket.getInetAddress()+":"+socket.getPort()+",begintime="+begingtime);
        String requestStr = null;
        try {
         BufferedReader br = getBufferedReader(socket);
            OutputStream pw=getWriterSocketOut(socket);
            String resstr =null;
            if((requestStr=br.readLine())!=null){
              log.info("   request  String :"+requestStr);
             // resstr  =echo(requestStr);  //业务处理
              log.info("   response String :"+resstr);
            }
            pw.write(resstr.getBytes());
            pw.flush();
                //if(msg.equals("bye")) break;
            log.info("--client request success,endtime:"+(System.currentTimeMillis()-begingtime)+"\n");
        } catch (IOException e) {
            log.error("error: SocektThread exception.",e);
        }finally{
            try {
                if(socket!=null)
                    socket.close();
            } catch (IOException e) {
             log.error("error: socket close exception .",e);
            }
        }
        
    }
 
    
}


 

package cn.xinli.test;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class SocketClient {

	protected static Log log = LogFactory.getLog(SocketClient.class);
	static Socket socket;
	static BufferedReader in;
	static PrintWriter    out;
		//xujun,cut,message
		public static void main(String[] args) throws Exception {
			String bString = "";
			try {
			socket = new Socket("127.0.0.1",5555);//连接服务端
			 
			 socket.setSoTimeout(7000);
			 
			  
			 
             in =  new BufferedReader(new InputStreamReader(socket.getInputStream()));//获得服务端发来的消息
            
	         out = new PrintWriter(socket.getOutputStream(),true);  //给服务端发送消息
	         
	         String content = "客户端测试";
	         log.info(content);
	         
	         out.print(content);
	         out.flush();
	         log.info("内容已经发送给服务器端");
	         
	         String b = null;
	         while((b=in.readLine())!=null)
	         {
	        	 log.info("服务端回应："+b);
	        	 bString = b;
	        	
	         }
	        
		  }catch(Exception e)
		  {
			 log.info("错误提示:"+e.getMessage());
		  }finally
		  {
			  try {
			  if(out!=null){
		        	    out.close();
		        	    log.info("输出流已关闭");
		        }else if(in!=null){
						in.close();
						log.info("输入流已关闭");
		        }else{
		        	    socket.close();
		        	    log.info("客户端Socket已关闭");
		        }
			  } catch (IOException e) {
					log.info("错误提示:"+e.getMessage());
					
				}
		  }
		  
		  
		  if("ok".equals(bString))
	    	 {
	    		 System.out.println("LALALLAALALA");
	    	 }
		}
		
		
	
}