java Socket客户端和服务器端

客户端：

package com.lzx.socket;

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

import org.xml.sax.InputSource;

public class SocketClient {

  public static void main(String[] args) {
    new SocketClient();
  }
  
  public SocketClient() {
    try {
      Socket socket = new Socket("127.0.0.1", 9999);
      PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
      //接收键盘输入内容
      System.out.println("enter some words : ");
      BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
      String line = reader.readLine();
      out.println(line);
      
      //接收服务器端的数据
      BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
      System.out.println("reply from server : " + in.readLine());
    } catch (UnknownHostException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
  }
}

 服务器：

package com.lzx.socket;

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

public class SocketServer {

  public static void main(String[] args) {
    new SocketServer();
  }
  
  public SocketServer() {
    try {
      ServerSocket serverSocket = new ServerSocket(9999);
      Socket socket = serverSocket.accept();
      String remoteHost = serverSocket.getInetAddress().getHostName();
      int remotePort = serverSocket.getLocalPort();//客户端端口
      System.out.println("A client come, remoteHost :" + remoteHost + ", remotePort : " + remotePort);
      //接收客户端的数据
      BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
      System.out.println("received from client : " + reader.readLine());
      
      //回复客户端
      PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
      out.println("Tanks,I love you!");
    } catch (IOException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }
  }
}