Java模拟qq软件的详细过程

**之前在封装代码后出现了问题,按照最初的写法,在登陆完毕后弹出聊天界面后会卡死,原因是当时登陆界面和聊天界面都是使用的主线程,我的代码没有写其他线程,无法多线程运行,因此在弹出聊天界面时线程不够用了,就卡在了监听线程里,因为在监听线程中再有新的监听就会被卡住
在宇哥的指点下,将启动服务器和客户端的部分改为线程,就解决了此问题。改善后的代码简练和清晰了很多,更方便大家参考,代码如下:
**

登陆界面的实现

登陆界面主要使用了JFrame,以及相关的一些组件,并且在界面中加上监听
登陆界面效果图

Java模拟qq软件的详细过程_第1张图片

登陆界面代码Login类

package com.lding.net;

import javax.swing.*;
import java.awt.*;

/**
 * @program: Chat
 * @description:
 * @author: 王丁
 * @date: 2021-09-26 08:58
 **/
public class Login{
    JTextField jTextField;


    public static void main(String[] args){
        Login login = new Login ();
        login.showUI ("kk");
    }

    public void showUI(String str){
        JFrame jf = new JFrame ();
        jf.setTitle ("❤️DDqq登陆界面❤️");
        jf.setSize (500, 400);
        jf.setDefaultCloseOperation (3);
        jf.setLocationRelativeTo (null);
        jf.setResizable (false);
        FlowLayout fl = new FlowLayout (FlowLayout.CENTER, 5, 5);
        jf.setLayout (fl);
        Dimension dim1 = new Dimension (500, 200);//图片大小
        Dimension dim2 = new Dimension (100, 50);//标签大小
        Dimension dim3 = new Dimension (300, 30);//输入框大小
        Dimension dim4 = new Dimension (100, 40);//按钮大小

        ImageIcon icon = new ImageIcon ("source/Login1.jpg");
        JLabel labimg = new JLabel (icon);
        labimg.setPreferredSize (dim1);
        jf.add (labimg);

        JLabel labuser = new JLabel ();
        labuser.setText ("user:");
        labuser.setPreferredSize (dim2);
        jf.add (labuser);
        JTextField textuser = new JTextField ();
        textuser.setPreferredSize (dim3);
        jf.add (textuser);

        JLabel labpassword = new JLabel ();
        labpassword.setText ("password:");
        labpassword.setPreferredSize (dim2);
        jf.add (labpassword);

        JPasswordField textPassword = new JPasswordField ();
        textPassword.setPreferredSize (dim3);
        jf.add (textPassword);

        JButton button = new JButton ();
        button.setBorder (BorderFactory.createRaisedBevelBorder ());
        button.setText ("login");
        button.setPreferredSize (dim4);
        jf.add (button);
        jf.setVisible (true);

        LoginListener ll = new LoginListener(textuser,textPassword, jf);
        button.addActionListener (ll);
        this.jTextField=ll.jTextField;

    }
}


login的监听类 LoginListener

package com.lding.net;

import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

/**
 * @program: Chat
 * @description:
 * @author: 王丁
 * @date: 2021-09-26 08:59
 **/
public class LoginListener implements ActionListener {
    JTextField jTextField;
    JPasswordField jPasswordField;
    JFrame jf ;
    LoginListener( JTextField jTextField,JPasswordField jPasswordField,JFrame jf){
        this.jf=jf;
        this.jTextField = jTextField;
        this.jPasswordField = jPasswordField;
    }
    @Override
    public void actionPerformed(ActionEvent e){
        if(jTextField.getText().equals("Alice")&&String.valueOf(jPasswordField.getPassword()).equals("1234")){
            System.out.println ("服务端登录!!");
            String name =jTextField.getText();
            new Server(name).start();
            jf.dispose();

        }else if(jTextField.getText().equals("Lding")&&String.valueOf(jPasswordField.getPassword()).equals("1234")){

            String name =jTextField.getText();
            System.out.println ("客户端登录!!");
            new Client(name).start();
            jf.dispose();
        }


    }
}

在登陆完毕后,需要跳转到聊天界面,这里采用的方法是通过一个flag标志来判断是否登陆完毕,当登陆完毕后,会创建新的聊天界面,并且登陆页面会被关闭
依然是双端通信,假定一端为客户端,一端为服务端,其实两端都可为用户。

聊天界面运行图

先登陆Alice的账号 密码为123456

Java模拟qq软件的详细过程_第2张图片

登陆成功后显示ok,并等待连接

Java模拟qq软件的详细过程_第3张图片

再登陆冷丁的账号,密码为123456

Java模拟qq软件的详细过程_第4张图片

当lding账号登陆成功后完成连接,这时候会弹出两个新的JFram窗口,为聊天见面

Java模拟qq软件的详细过程_第5张图片

随后可以发送消息,消息可以实时显示时间,并显示用户名
一方发送的消息会在另一方的窗口上实时显示出来

Java模拟qq软件的详细过程_第6张图片

Client类代码

package com.lding.net;

import com.lding.ui.MsgUI;

import javax.swing.*;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * @program: Chat
 * @description: 客户端
 * @author: 王丁
 * @date: 2021-09-26 08:58
 **/
public class Client extends  Thread{
    String name;

    public Client(String name) {
        this.name=name;
    }
    public static void main(String[] args) {
        String port="客户端";
        Login login=new Login();
        login.showUI(port);
    }

    @Override
    public void run(){
        try {
            startClient();
        } catch (IOException e) {
            e.printStackTrace ();
        }
    }

    void startClient() throws IOException{
        Socket socket=new Socket("127.0.0.1",8888);
        //输入 输出流对象
        InputStream inputStream=socket.getInputStream();
        OutputStream outputStream=socket.getOutputStream();
        MsgUI msgUI=new MsgUI(outputStream,name);
        JTextPane showmsgpane=msgUI.initUI("客户端");
        outputStream.flush();
        int count=1;
        while(true){
            int msglenth=inputStream.read();
            System.out.println("消息长度:"+msglenth);
            byte[] msgbytes=new byte[msglenth];
            //将接下来的数据读入字节数组中
            inputStream.read(msgbytes);

            count++;
            if(count%2==0){
                SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//设置日期格式
                String date = df.format(new Date());// new Date()为获取当前系统时间,也可使用当前时间戳
                String getmsg=new String(msgbytes);
                String msg=showmsgpane.getText();
                showmsgpane.setText(msg+date+"  ["+getmsg+"]"+"说:"+"\n");
            }else{
                String getmsg=new String(msgbytes);
                String msg=showmsgpane.getText();
                showmsgpane.setText(msg+getmsg+"\n");
            }
        }
    }
}


Server代码

package com.lding.net;

import com.lding.ui.MsgUI;

import javax.swing.*;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.text.SimpleDateFormat;
import java.util.Date;

/**
 * @program: Chat
 * @description:
 * @author: 王丁
 * @date: 2021-09-26 08:58
 **/
public class Server extends  Thread{
    JTextField jTextField;
    String name;
    public Server(String name){
        this.name=name;
    }
    public static void main(String[] args) {
        String port="服务端";
        Login login=new Login();
        login.showUI(port);
    }
    @Override
    public void run(){
        try {
            startServer();
        } catch (IOException e) {
            e.printStackTrace ();
        }
    }
    void startServer() throws IOException{
        ServerSocket serverSocket=new ServerSocket(8888);
        System.out.println("等待连接!!");
        Socket clientsocket=serverSocket.accept();//监听连接
        System.out.println("连接成功!!");
        InputStream inputStream=clientsocket.getInputStream();
        OutputStream outputStream=clientsocket.getOutputStream();

        MsgUI msgUI=new MsgUI(outputStream,name);
        JTextPane showmsgpane=msgUI.initUI("服务端");
        //outputStream.flush();
        int count=1;
        while(true){
            int msglenth=inputStream.read();
            System.out.println("消息长度是:"+msglenth);
            byte[] msgbytes=new byte[msglenth];
            //将接下来的数据读入字节数组中
            inputStream.read(msgbytes);
            count++;
            if(count%2==0){
                SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//设置日期格式
                String date = df.format(new Date());// new Date()为获取当前系统时间,也可使用当前时间戳
                String getmsg=new String(msgbytes);
                String msg=showmsgpane.getText();
                showmsgpane.setText(msg+date+"  ["+getmsg+"]"+"说:"+"\n");
            }else{
                String getmsg=new String(msgbytes);
                String msg=showmsgpane.getText();
                showmsgpane.setText(msg+getmsg+"\n");
            }
        }
    }
}


登陆界面代码

MsgUI

package com.lding.ui;

import javax.swing.*;
import java.awt.*;
import java.io.OutputStream;

/**
 * @program: Chat
 * @description:
 * @author: 王丁
 * @date: 2021-09-26 08:59
 **/
public class MsgUI extends JFrame {

    OutputStream outputStream;
    String name;
    public MsgUI(OutputStream outputStream,String name){
        this.outputStream=outputStream;
        this.name=name;
    }
    public JTextPane initUI(String title){
        setTitle(title);
        setSize(800,800);
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
        setLayout(new FlowLayout());
        //接收显示框
        JTextPane jtp=new JTextPane();
        jtp.setPreferredSize(new Dimension(750,400));
        JScrollPane jsp=new JScrollPane(jtp);
        jtp.getText();
        Dimension dim=new Dimension(750,400);//按钮大小



        //发送框
        JTextPane jtp1=new JTextPane();
        jtp1.setPreferredSize(new Dimension(750,200));
        JScrollPane jsp1=new JScrollPane(jtp1);

        JButton btn=new JButton("发送");
        add(jsp);
        add(jsp1);
        add(btn);
        setVisible(true);

        MsgListener msgl=new MsgListener(jtp1,this.outputStream,name);
        btn.addActionListener(msgl);
        return jtp;
    }
}

MsgUIListener

package com.lding.ui;

import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.io.OutputStream;

/**
 * @program: Chat
 * @description:
 * @author: 王丁
 * @date: 2021-09-26 09:00
 **/
public class MsgListener implements ActionListener {

    JTextPane jtp;
    OutputStream outputStream;
    String name;
    public  MsgListener(JTextPane jtp,OutputStream outputStream,String name){
        this.jtp=jtp;
        this.outputStream=outputStream;
        this.name=name;
    }
    @Override
    public void actionPerformed(ActionEvent e) {
        byte[] names=this.name.getBytes();
        try {
            outputStream.write(names.length);
            outputStream.write(names);
            outputStream.flush();
        } catch (IOException ex) {
            ex.printStackTrace();
        }


        String msg=jtp.getText();
        byte[] msgs=msg.getBytes();
        try {
            outputStream.write(msgs.length);
            outputStream.write(msgs);
            outputStream.flush();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
        jtp.setText(null);
    }
}


之后会丰富更多功能 敬请期待! 感谢您的观看!!!

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