java_chat

程序主要分为三大部分，登陆程序，服务器程序，客服端程序。主要涉及到的知识为Java基础语法知识，图形界面，线程，以及网络通信技术等。

首先讲一下登陆模块，功能就是实现用户的登陆，图形的布局是用的BorderLayout结合GridLayout,，另外为Login按钮设置了事件监听，当用户输入完成后，点击按钮，登陆程序会启动一个对象，那就是客服端的程序，并同时将用户输入的昵称和服务器地址传送过去，之后登陆界面将影藏起来。

接下来就是客服端程序，图形界面我用的也是Bordlayout结合Gridlayout,并弄了一个可以滚动的显示框，程序核心部分是通过socker对服务器进行连接，当用户点击发送按钮的时候会将文本框的内容发送到服务器，接收是通过创建一个线程来完成的

服务器和客服端差不多，主要是网络那一部分用的是服务端的模型来建立的。

如下是本程序的一些截图。

源程序：

//Login.java

import java.awt.BorderLayout;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;



import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JTextField;



@SuppressWarnings("serial")

public class Login extends JFrame implements ActionListener{

    JFrame jf = new JFrame("login");

    JPanel p1 = new JPanel();

    JPanel p2 = new JPanel();

    JPanel p3 = new JPanel();

    JLabel l1 = new JLabel("请输入您得昵称");

    JLabel l2 = new JLabel("请设置服务器地址");

    JTextField t1 = new JTextField();

    JTextField t2 = new JTextField();

    JButton loginButton = new JButton("Login");

    JButton exitButton = new JButton("Exit");

    

    public Login(){

        p1.setLayout(new GridLayout(2,2));

        p1.add(l1);

        p1.add(t1);

        p1.add(l2);

        p1.add(t2);

        p2.add(loginButton);

        jf.getContentPane().add(BorderLayout.NORTH,p1);

        jf.getContentPane().add(BorderLayout.CENTER,p2);

        jf.setSize(200,200);

        jf.setVisible(true);        

        loginButton.addActionListener(this);             

    }



    public static void main(String[] args){        

        Login login = new Login();    

    }



    @Override

    public void actionPerformed(ActionEvent e) {

        // TODO Auto-generated method stub

        if(!t1.getText().equals("") && !t2.getText().equals("")){

            TestClient c=new TestClient(t1.getText(),t2.getText());//启动客户端聊天主窗口

            jf.setVisible(false);

            

        }

    }

}

//TestClient.java

import java.awt.BorderLayout;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.DataInputStream;

import java.io.DataOutputStream;

import java.io.IOException;

import java.net.ServerSocket;

import java.net.Socket;



import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.JTextField;



@SuppressWarnings("serial")

public class TestClient extends JFrame implements ActionListener {

    

    DataInputStream dis;

    DataOutputStream dos;

    String s1,s2,s3,sna,sip;

    Socket s;

    String sss="";

    

    JTextField tf;//文本编辑框

    JTextArea ta;//文本显示

    JButton bt;//按钮

    JFrame jf = new JFrame();

    JPanel p1 = new JPanel();

    JPanel p2 = new JPanel();

    public TestClient(String sna, String sip){

        this.sna = sna;

        this.sip = sip;

        this.setTitle("聊天程序客服端");

        tf = new JTextField(40);

        JScrollPane jp = new JScrollPane();        

        ta = new JTextArea(10,10);        

        jp.setViewportView(ta);

        bt = new JButton("发送");        

        p2.setLayout(new GridLayout(1,2));

        p2.add(tf);

        p2.add(bt);    

        this.getContentPane().add(BorderLayout.CENTER,jp);

        this.getContentPane().add(BorderLayout.SOUTH,p2);    

        bt.addActionListener(this); 

        this.setSize(200,200);

        this.setVisible(true);

        try {

            s = new Socket(sip,777);            

            dis = new DataInputStream(s.getInputStream());

            dos = new DataOutputStream(s.getOutputStream());                    

            this.createReadThread();

        } catch (IOException e1) {

            // TODO Auto-generated catch block

            e1.printStackTrace();

        }

    }    

    @Override

    public void actionPerformed(ActionEvent e) {

        // TODO Auto-generated method stub

        //发送        

        s2 = tf.getText();

        s3 = sna + "说: " + s2;

        ta.append("自己说: "+ s2 + "\n");

        try {

            dos.writeUTF(s3);

            tf.setText(sss);

        } catch (IOException e1) {

            // TODO Auto-generated catch block

            e1.printStackTrace();

        }

    }

    

    public void createReadThread(){        

        ClientReadThread rt=new ClientReadThread(this.ta,this.dis);

        rt.start();

    }    

}

//ClientReadThread.java

import java.io.DataInputStream;

import java.io.IOException;



import javax.swing.JTextArea;



public class ClientReadThread extends Thread{

    JTextArea ta;

    DataInputStream dis;

    String text;

    public ClientReadThread(JTextArea t,DataInputStream d){

        this.ta=t;

        this.dis=d;        

    }

    //线程实现的功能

    public void run(){

        try{

            text=dis.readUTF();//读取输入流的信息UTF-8多国码

            while(!text.equals("quit")){

                ta.append("服务器回复: "+text);

                ta.append("\n");

                text=dis.readUTF();

            }

        }catch(IOException e){

            System.out.println("连接结束!");

        }

        finally{

            System.exit(0);        

        }        

    }

}

//TestServer.java

import java.awt.BorderLayout;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.DataInputStream;

import java.io.DataOutputStream;

import java.io.IOException;

import java.net.ServerSocket;

import java.net.Socket;



import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.JTextField;



@SuppressWarnings("serial")

public class TestServer extends JFrame implements ActionListener {    

    DataInputStream dis;

    DataOutputStream dos;

    String s1,s2;

    ServerSocket ss;

    Socket s;

    String sss="";

    

    JTextField tf;//文本编辑框

    JTextArea ta;//文本显示

    JButton bt;//按钮

    JFrame jf = new JFrame();

    JPanel p1 = new JPanel();

    JPanel p2 = new JPanel();

    public TestServer(){    

        this.setTitle("聊天程序服务端");

        tf = new JTextField(40);

        JScrollPane jp = new JScrollPane();        

        ta = new JTextArea(10,10);        

        jp.setViewportView(ta);

        bt = new JButton("发送");        

        p2.setLayout(new GridLayout(1,2));

        p2.add(tf);

        p2.add(bt);    

        this.getContentPane().add(BorderLayout.CENTER,jp);

        this.getContentPane().add(BorderLayout.SOUTH,p2);    

        bt.addActionListener(this); 

        this.setSize(200,200);

        this.setVisible(true);

            try {

            ss = new ServerSocket(777);

            s = ss.accept();

            dis = new DataInputStream(s.getInputStream());

            dos = new DataOutputStream(s.getOutputStream());

            //接收

            this.createReadThread();

        } catch (IOException e1) {

            // TODO Auto-generated catch block

            e1.printStackTrace();

        }

    }



    public static void main(String[] args){        

        TestServer login = new TestServer();    

    }



    public void createReadThread(){    

        ServerReadThread rt=new ServerReadThread(this.ta,this.dis);

        rt.start();

    }

    

    @Override

    public void actionPerformed(ActionEvent e) {

        // TODO Auto-generated method stub

        s2 = tf.getText();

        ta.append("自己说: "+ s2 + "\n");

        try {

            dos.writeUTF(s2);

                tf.setText(sss);

        } catch (IOException e1) {

            // TODO Auto-generated catch block

            e1.printStackTrace();

        }

    }    

}

//ServerReadThread.java

import java.io.DataInputStream;

import java.io.IOException;



import javax.swing.JTextArea;



public class ServerReadThread extends Thread{

    DataInputStream dis;

    JTextArea ta;

    String stemp;

    public ServerReadThread(JTextArea ta, DataInputStream dis){

        this.dis = dis;

        this.ta = ta;

    }

        

    public void run()

    {

        try {

            stemp = dis.readUTF();

            while(true)

            {

            ta.append(stemp+"\n");

            stemp = dis.readUTF();

            }

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }        

    }

}