clientchat.java~38~

这是我的Java课程设计

package chattingroom;
import java.io.*;
import java.net.*;
import javax.swing.JOptionPane;
/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class ClientChat {
  PrintWriter  outputstream; //输出流（指向服务器）
  BufferedReader inputstream;//输入流（来自服务器）
  String clientRequest;//客户端请求
  String severResponse;//服务器端回应
  static boolean connected=false;
  static InetAddress ServerHost;
  Socket clientSocket=null;

public ClientChat() {
  }

public ClientChat(String serverName,int port)
{
 try{
   ServerHost=InetAddress.getByName(serverName);

   clientSocket=new Socket(serverName,port ); //根据服务器主机名或IP在指定端口建立连接
   outputstream=new PrintWriter(new  OutputStreamWriter(clientSocket.getOutputStream()),true);//获得Socket的输出流
   inputstream=new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));//获得Socket的输入流
        }
  catch(Exception e)
        {JOptionPane.showMessageDialog(null,"无法连接服务器! 错误："+e.getMessage(),"系统提示信息",1);}
  if (clientSocket.isConnected())
    {connected=true;}
  JOptionPane.showMessageDialog(null,"已成功地连接到服务器，您可以开始发言了!","系统提示信息",1);
}

public void sendRequest(String request)
      {
        outputstream.println(request); //向Socket的输出流写入字符串
        outputstream.flush();
      }

public String getResponse()
      {String str=new String("");
      try{

        str=inputstream.readLine(); //从Socket的输入流读入字符串
      }
  catch(IOException e){JOptionPane.showMessageDialog(null,"无法从服务器读取消息！","系统提示信息",1); }//必须捕获错误
  return str;}

public void close(){
  try {
    clientSocket.close();
  }
  catch (IOException ex) {
    JOptionPane.showMessageDialog(null,"与服务器断开连接出错： "+ex.getMessage(),"系统提示信息",1); //必须捕获错误

  }
}
public static void main(String[] args) {
    ClientChat clientChat1 = new ClientChat();
  }
}