Java聊天室系统(二):客户之间互相发送各种文件

实现功能:

1、基于上一版本,这次实现了传输文件,要注意所有的读入写入,输入输出的接口以及写法要一致,否则会乱码

注:大家参考就好了,不要照搬啊!!!

代码展示:

客户端:
import java.io.*;
import java.net.*;
public class TalkClient {
   
   
	public static void main(String args[]) {
   
   
		try{
   
   
			//向本机的4700端口发出客户请求
			Socket socket=new Socket("127.0.0.1",4700);
			//System.out.println(socket);//输出本客户端的编号,方便观察,可删除
			BufferedReader sin=new BufferedReader(new InputStreamReader(System.in));//键盘输入流
			DataOutputStream os=new DataOutputStream(socket.getOutputStream());//消息,文件输出流
			DataInputStream is=new DataInputStream(socket.getInputStream());//消息,文件输入流
			String readline;
			System.out.println("样例:1 hello  或者    1 hello.txt");
			while(true){
   
   
				if(sin.ready())//DataOutputStream特有的方法,在不读取的情况下,查看缓冲区是否有可读取的内容
				{
   
   //如果键盘有输入,即先发消息
					readline=sin.readLine();
					os.writeUTF(readline);
					os.flush();//刷新输出流,使Server马上收到该字符串
					
					String[] talk=readline.split(" ");
					String[] wj=talk[1].split("\\.");//分割字符串,判断是否要发送文件
					if(wj.length>1)//如果要发送文件
					{
   
   
						File f = new File(talk[1]);
						FileInputStream fis = new FileInputStream(f);//读文件对象,该文件就在根目录下	
						int m,len;
						long l=f.length(); //获取文件长度,单位kb
						if((l%512)!=0) len 
Dimension ss = Toolkit.getDefaultToolkit().getScreenSize(); public ChatClient(){ super("登录聊天室"); pnlLogin = new JPanel(); this.getContentPane().add(pnlLogin); lblServer = new JLabel("服务器:"); lblPort = new JLabel("端口:"); lblName = new JLabel("用户名:"); lblPassword = new JLabel("口 令:"); tfServer = new JTextField(15); tfServer.setText("127.0.0.1"); tfPort = new JTextField(6); tfPort.setText("8000"); tfName = new JTextField(20); pwd = new JPasswordField(20); btnLogin = new JButton("登录"); btnRegister = new JButton("注册"); btnExit=new JButton("退出"); pnlLogin.setLayout(null); pnlLogin.setBackground(new Color(205,112,159)); lblServer.setBounds(40,35,50,30); tfServer.setBounds(90,35,102,25); lblPort.setBounds(195,35,35,30); tfPort.setBounds(230,35,55,25); lblName.setBounds(40,70,50,30); tfName.setBounds(90,70,195,25); lblPassword.setBounds(40,100,50,30); pwd.setBounds(90,100,195,25); btnLogin.setBounds(30,160,70,25); btnRegister.setBounds(130,160,70,25); btnExit.setBounds(230,160,70,25); pnlLogin.add(lblServer); pnlLogin.add(tfServer); pnlLogin.add(lblPort); pnlLogin.add(tfPort); pnlLogin.add(lblName); pnlLogin.add(tfName); pnlLogin.add(lblPassword); pnlLogin.add(pwd); pnlLogin.add(btnLogin); pnlLogin.add(btnRegister); pnlLogin.add(btnExit); //设置登录窗口 setResizable(false); setSize(320,260); setVisible(true); setLocation((ss.width-getWidth())/2,(ss.height-getHeight())/2); //为按钮注册监听 btnLogin.addActionListener(this); btnRegister.addActionListener(this); btnExit.addActionListener(this); addWindowListener(new WindowAdapter(){ public void windowClosing(WindowEvent e){ System.exit(0); } }); } //按钮监听响应 public void actionPerformed(ActionEvent ae){ Object source = ae.getSource(); if (source.equals(btnLogin)){ if (tfName.getText().equals("") || pwd.getPassword().equals("")) JOptionPane.showMessageDialog(null, "用户名或密码不能为空"); else strServerIp = tfServer.getText(); login(); } if (source.equals(btnRegister)){ strServerIp = tfServer.getText(); this.dispose(); new Register(strServerIp,8000); } if (source == btnExit) { System.exit(0); } } public void login() { User data = new User(); data.name = tfName.getText(); data.password = new String(pwd.getPassword()); try { String str = InetAddress.getLocalHost().toString(); data.ip = " "+ str.substring(str.lastIndexOf("/"), str.length()); } catch (UnknownHostException ex) { Logger.getLogger(ChatClient.class.getName()).log(Level.SEVERE, null, ex); } try{ Socket sock = new Socket(strServerIp,8000); ObjectOutputStream os = new ObjectOutputStream(sock.getOutputStream()); os.writeObject((User) data); //读来自服务器socket的登录状态 BufferedReader br = new BufferedReader(new InputStreamReader(sock.getInputStream())); String status = br.readLine(); if (status.equals("登陆成功")){ new ChatRoom((String)data.name,strServerIp); this.dispose(); //关闭流对象 os.close(); br.close(); sock.close(); } else{ JOptionPane.showMessageDialog(null, status); os.close(); br.close(); sock.close(); } } catch (ConnectException e1){ JOptionPane.showMessageDialog(null, "连接到制定服务器失败!"); } catch (InvalidClassException e2) { JOptionPane.showMessageDialog(null, "类错误!"); } catch (NotSerializableException e3) { JOptionPane.showMessageDialog(null, "对象未序列化!"); } catch (IOException e4) { JOptionPane.showMessageDialog(null, "不能写入到指定服务器!"); } } public static void main(String arg[]){ new ChatClient(); } }
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