login.java

JAVA做的一个简单的聊天室软件

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.io.*;
import java.net.Socket;
import java.util.*;
import javax.swing.*;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
public class Login extends JFrame {
	JLabel lblUsername, lblPassword;
	JComboBox comboUsername;
 	JPasswordField txtPassword;
 	JButton jbnButton1, jbnButton2;
 	BufferedReader read1;
 	PrintWriter write1;
	JLabel lblname,lblwelcome;
	String s32;
	TreeSet tr1;
	Socket clientSocket;
	BufferedReader sin;
	PrintWriter sout;
	Liaotianshi lt1;
	String ServerIp="192.168.1.134";
	int ServerPort=10002;
	public Login(String title) {
		super(title);
		tr1=new TreeSet();
		String s="";
		try{
			comboUsername = new JComboBox();
			if ((new File("user.txt")).exists()){
		 		read1 = new BufferedReader(new FileReader("user.txt"));
				while ((s = read1.readLine()) != null)
				{
					comboUsername.addItem(s);
					comboUsername.setSelectedIndex(0);
					tr1.add(s);
				}
				read1.close();
			}
		 	
		lblname= new JLabel("好朋友聊天室");
		lblname.setFont(new Font("宋体",Font.PLAIN,20));
		lblname.setForeground(Color.RED);
		lblwelcome= new JLabel("欢迎您!");
		
		lblUsername = new JLabel("用户名:");
		lblPassword = new JLabel("密  码:");
		txtPassword = new JPasswordField(10);

		comboUsername.setEditable(true);
//		comboUsername.addActionListener(new ActionListener() {
//            public void actionPerformed(ActionEvent e) {
//                //
//  
//            }
//        });
		jbnButton1 = new JButton("登录");
		jbnButton2 = new JButton("取消");
		jbnButton1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
	          	try {
	          		String user,pass;
	          		user=(String)comboUsername.getSelectedItem();
	          		pass=txtPassword.getText();
	          		if (connectserver(user,pass)==1) {
	          			//将登陆成功的用户记入用户列表.
		          		tr1.add(user);
		          		write1 =new PrintWriter( new BufferedWriter(new FileWriter("user.txt",false)));
		          		Iterator it1;
		          		it1=tr1.iterator();
		          		while (it1.hasNext()){
		          			write1.println(it1.next());
		          		}
	              		write1.close();
	              		//打开聊天室界面并隐藏登陆界面.
	              		lt1 = new Liaotianshi("聊天室",user,sin,sout);
	              		lt1.pack();
	               		setVisible(false);
	               		lt1.setVisible(true);
	               		lt1.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	               		System.out.println("登录成功!");
	          		}
	          		else {
	          			System.out.println("登录失败!");
	          		}
	          			
	          			
          	}
        	 	catch (IOException e2){
        	 		System.out.println(e2.toString());
        	 	}
			}

		});
		jbnButton2.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				//退出
				sout.println("/logout");
				sout.flush();
				System.exit(0);
			}

		});
		
		jbnButton1.setMnemonic(KeyEvent.VK_Y);
		jbnButton2.setMnemonic(KeyEvent.VK_X);
		
	//	getContentPane().setLayout(new FlowLayout());
		Insets is = new Insets(5,5,5,5);
		
		getContentPane().setLayout(new GridBagLayout());
		GridBagConstraints gBC = new GridBagConstraints();

		gBC.anchor=GridBagConstraints.CENTER;
		gBC.fill = GridBagConstraints.NONE;
        gBC.gridx = 1;
        gBC.gridy = 1;
        gBC.gridwidth = 2;
        gBC.gridheight=1;
        gBC.insets=is;
		getContentPane().add(lblname,gBC);
		
		gBC.anchor=GridBagConstraints.CENTER;
		gBC.fill = GridBagConstraints.NONE;
        gBC.gridy = 2;
		getContentPane().add(lblwelcome,gBC);

		
		gBC.anchor=GridBagConstraints.WEST;
		gBC.fill = GridBagConstraints.NONE;
        gBC.gridx = 1;
        gBC.gridy = 3;
        gBC.gridwidth = 1;
        gBC.gridheight=1;
        gBC.insets=is;
		getContentPane().add(lblUsername,gBC);
		
        gBC.gridx = 1;
        gBC.gridy = 4;
        gBC.gridwidth = 1;
        gBC.gridheight=1;
        gBC.insets=is;
		getContentPane().add(lblPassword,gBC);
		
		gBC.anchor=GridBagConstraints.WEST;
		gBC.fill = GridBagConstraints.HORIZONTAL;
        gBC.gridx = 2;
        gBC.gridy = 3;
        gBC.gridwidth = 1;
        gBC.gridheight=1;
        gBC.insets=is;
		getContentPane().add(comboUsername,gBC);
		
        gBC.gridx = 2;
        gBC.gridy = 4;
        gBC.gridwidth = 1;
        gBC.gridheight=1;
        gBC.insets=is;
		getContentPane().add(txtPassword,gBC);

		JPanel jp1=new JPanel();
		jp1.setLayout(new FlowLayout());
		jp1.add(jbnButton1,gBC);
		jp1.add(jbnButton2,gBC);
		
        gBC.gridx = 1;
        gBC.gridy = 5;
        gBC.gridwidth = 2;
        gBC.gridheight=1;
        gBC.insets=new Insets(10,10,10,10);
	
		getContentPane().add(jp1,gBC);
		
		}
	 	catch (IOException e){
	 		System.out.println(e.toString());
	 	}

	}
	public int connectserver(String username,String password){

		String reply;
		try {
			clientSocket=new Socket(ServerIp, ServerPort);
			sin = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
			sout = new PrintWriter(new OutputStreamWriter(clientSocket.getOutputStream()));
			sout.println(username);
			sout.flush();
			sout.println(password);
			sout.flush();
			reply=sin.readLine();
			if (reply.equals("login succ") ) 
				return 1;
			else
				return 0;
		} catch (Exception e) {
			e.printStackTrace();
		}
		return 0;
	}
	
	public static void main(String[] args) {
		Login frm = new Login("登陆界面");
		frm.pack();
		frm.setVisible(true);
		frm.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
}
class Liaotianshi extends JFrame {
	JList ListUserName;
	JTextArea Liaotianxinxi;
	JTextArea Fayan;
	JButton Fasong;
	JLabel lblname;
	String username3;
	BufferedReader r3;
	PrintWriter w3;
	String SpeakUser;
	public Liaotianshi(String title,String username2,BufferedReader r2,PrintWriter w2){
		super(title);
		username3=username2;
		r3=r2;
		w3=w2;
		//处理聊天室界面
		lblname= new JLabel("好朋友聊天室 ");
		lblname.setFont(new Font("宋体",Font.PLAIN,20));
		Liaotianxinxi = new JTextArea(15, 1);
		Liaotianxinxi.setEditable(false);
		String text="           好朋友聊天室 欢迎你!            \n";
		Liaotianxinxi.append(text);
		Fayan=new JTextArea("");
		Fasong=new JButton("发送信息");
		DefaultListModel lm = new DefaultListModel();
			ListUserName=new JList(lm);
		lm.add(0, "所有人");
		JScrollPane scrollPane_3=new JScrollPane(ListUserName,
				JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
				JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
		scrollPane_3.setPreferredSize(new Dimension(100, 400));
		
		ListUserName.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
		ListUserName.setSelectedIndex(0);
		
		Fasong.setMnemonic(KeyEvent.VK_Y);
		JScrollPane scrollPane_1 = new JScrollPane(Fayan,
				JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
				JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
		JScrollPane scrollPane_2 = new JScrollPane(Liaotianxinxi,
				JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
				JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
		scrollPane_1.setPreferredSize(new Dimension(500,100));
		scrollPane_2.setPreferredSize(new Dimension(400,400));
	
		Insets is = new Insets(5,5,5,5);
		JSplitPane jsp1=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);
		jsp1.setLeftComponent(scrollPane_2);
		jsp1.setRightComponent(scrollPane_3);
		jsp1.setDividerLocation(400);
		jsp1.setAutoscrolls(true);
		jsp1.setDividerSize(5);
		getContentPane().setLayout(new BorderLayout(5,5));
		getContentPane().add(lblname,BorderLayout.PAGE_START);
 	 	getContentPane().add(jsp1,BorderLayout.CENTER);
 		JPanel jp1=new JPanel();
		jp1.setLayout(new BorderLayout(5,5));
		jp1.add(scrollPane_1,BorderLayout.CENTER);
		jp1.add(Fasong,BorderLayout.EAST);
		jp1.setVisible(true);
		JPanel jp2=new JPanel();
		getContentPane().add(jp1,BorderLayout.PAGE_END);
		//增加监听.
		Fasong.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				String speak1;
				getspeakuser();
				speak(username3,r3,w3,Fayan.getText(),"/TALK");
				Fayan.setText("");
			}
		});
		Fayan.addKeyListener(new KeyListener() {

			public void keyPressed(KeyEvent e) {
				// TODO 自动生成方法存根
				if (e.isControlDown() && e.getKeyCode()==KeyEvent.VK_ENTER){
					String speak1;
					speak(username3,r3,w3,Fayan.getText(),"/TALK");
					Fayan.setText("");
				}
			}

			public void keyReleased(KeyEvent e) {
				// TODO 自动生成方法存根
				
			}

			public void keyTyped(KeyEvent e) {
				// TODO 自动生成方法存根
				
			}
			
		});
		//创建接受线程.
		ReceiveThread rt1 = new ReceiveThread(r2,Liaotianxinxi,lm);
		}
	public void getspeakuser(){
		if (ListUserName.getSelectedValue() == null) {
			ListUserName.setSelectedIndex(0);
		}
		SpeakUser=ListUserName.getSelectedValue().toString();
	}
	public void speak(String username,BufferedReader r1,PrintWriter w1,String word,String msg){
		try {
			if (word.equals("")){
				return;
			}
			if (msg.equals("/TALK")){
				w1.println("/TALK");
				w1.println(username3+"对"+SpeakUser+"说：\n"+word);
				w1.println("TALK/");
				w1.flush();
			}
//			if (msg.equals("/GetUserList")){
//				w1.println("/GetUserList");
//				w1.flush();
//			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}
class ReceiveThread extends Thread{
	BufferedReader r5;
	JTextArea liaotianxinxi2;
	DefaultListModel lm2;
	public ReceiveThread(BufferedReader r4,JTextArea liaotianxinxi,DefaultListModel lm)
	{
		r5=r4;
		liaotianxinxi2=liaotianxinxi;
		lm2=lm;
		this.start();
	}
	public void run() {
		String line;
		try {
			while (true) {
				line = r5.readLine();
				System.out.println(line);
				if (line.equals("/TALK")){
					line = r5.readLine();
					while (line.equals("TALK/") == false){
						liaotianxinxi2.append(line+"\n");
						liaotianxinxi2.setCaretPosition(liaotianxinxi2.getText().length());
						line = r5.readLine();
					}
				}
				if (line.equals("/RefreshUserList")){
					int i=0;
					lm2.clear();
					lm2.add(i, "所有人");
					line=r5.readLine();
					while (line.equals("SendUserList/") == false){
						i++;
						lm2.add(i, line);
						line = r5.readLine();
					}

				}
				if (line.equals("/adduser")){
					line = r5.readLine();
					liaotianxinxi2.append(line+" 微笑地走入聊天室.\n");
				}
				if (line.equals("/lessuser")){
					line = r5.readLine();
					liaotianxinxi2.append(line+" 匆匆忙忙地离开聊天室.\n");
				}
			
				if (line.equals("/QUIT")) break;
			}
		} catch (IOException e) {
			//e.printStackTrace();
			return;
		}
	}

	
}