client.java~13~

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package chat;
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import javax.swing.*;
import java.util.*;
import java.net.*;
import java.io.*;
/**
 *
 * <p>Title:客户端applet类 </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */


public class Client extends JApplet implements Runnable{
  Socket socket=null;
  DataInputStream dis=null;
  DataOutputStream dos=null;
  Hashtable peopleList;
  Thread clientThread=null;
  private boolean isStandalone = false;
  ChatArea chatArea;
  //Get a parameter value
  /*public String getParameter(String key, String def) {
    return isStandalone ? System.getProperty(key, def) :
      (getParameter(key) != null ? getParameter(key) : def);
  }*/

  //Construct the applet
  public Client() {
  }
  //Initialize the applet
  public void init() {
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception {
    String userHome=System.getProperty("user.home");
    File fileDir = new File(userHome, "聊天记录");
    if (!fileDir.exists()) {
      fileDir.mkdir();
    }
    peopleList=new Hashtable();
    chatArea=new ChatArea(peopleList);
    this.setSize(new Dimension(400,300));
    this.getContentPane().add(chatArea, BorderLayout.CENTER);
  }
  public void start(){
    if(socket!=null&&dos!=null&dis!=null){
      try{
        socket.close();
        dos.close();
        dis.close();
      }catch(IOException e){
        e.printStackTrace();
      }
    }
    try{
      socket=new Socket(this.getCodeBase().getHost(),4331);
      dos=new DataOutputStream(socket.getOutputStream());
      dis=new DataInputStream(socket.getInputStream());

    }catch(IOException e){
      chatArea.loginDialog.setVisible(false);
      JOptionPane.showMessageDialog(null, "网络连接错误,请重新登陆", "提示信息",
                                            JOptionPane.ERROR_MESSAGE);
      System.exit(0);
     // e.printStackTrace();
    }
    if(socket!=null){
     chatArea.loginDialog.setConnection(socket,dis,dos);
     //System.out.println(socket.getPort()+"client");
    }
    if(clientThread==null){
      clientThread=new Thread(this);
      clientThread.start();
    }
  }

  public void run(){
    while(clientThread!=null){
      if(chatArea.loginDialog.getEnableChat()){
        chatArea.setConnection(socket,dos,dis);
        break;
      }
      try{
        Thread.sleep(1000);
      }catch(Exception e){
        //e.printStackTrace();
       }


    }

  }

  public void stop(){
    try{
      this.socket.close();
      this.dos.flush();
      this.dos.close();
      this.dis.close();
      this.clientThread=null;
    }catch(Exception e){
     // e.printStackTrace();
    }
  }





















  //Get Applet information
 /* public String getAppletInfo() {
    return "Applet Information";
  }
  //Get parameter info
  public String[][] getParameterInfo() {
    return null;
  }

  //static initializer for setting look & feel
  static {
    try {
      //UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
      //UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
    }
    catch(Exception e) {
    }
  }*/
}