Socket 注意事项; 要关闭流; 否则报错connection reset;

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

public class Client {

   public static void main(String[] args) {
       try {
           Socket socket = new Socket("localhost", 2000);
           PrintWriter pw = new PrintWriter(socket.getOutputStream());
           // PrintStream ps = new PrintStream(socket.getOutputStream());
           String stu = "localho";
           pw.print(stu);
           pw.close();//记得要关闭流否则要报错;
           // BufferedReader br = new BuferedReader(new InputStreamReader(
           // System.in));
           // String str = null;
           // while ((str = br.readLine()) != null) {
           // ps.println(str);
           // }
       } catch (IOException e) {
           e.printStackTrace();
       }
   }

}

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;

public class Server {
   public static void main(String[] args) {
       try {
           ServerSocket server = new ServerSocket(2000);
           System.out.print("");
           while (true) {
               Socket socket = server.accept();

               System.out.println("接受到来自"
                       + socket.getInetAddress().getHostAddress() + "的请求");

               ServerThread thread = new ServerThread(socket);

               thread.start();

           }

       } catch (IOException e) {
           // TODO Auto-generated catch block
           e.printStackTrace();
       }

   }
}

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

public class ServerThread extends Thread {

   private Socket socket = null;

   public ServerThread(Socket socket) {

       this.socket = socket;
   }

   @Override
   public void run() {
       try {
           BufferedReader br = new BufferedReader(new InputStreamReader(socket
                   .getInputStream()));
           String str = null;
           while ((str = br.readLine()) != null) {

               System.out.println("服务线程收到来自客户端的消息" + str);
           }
       } catch (IOException e) {
           // TODO Auto-generated catch block
           e.printStackTrace();
       }

   }

}