java即时在线聊天（一）

今天模仿着马士兵老师的视频，做了一个即时在线聊天。此时拿出来与大家分享，做的不太好，请大家凑合着看吧

import java.awt.Frame;public class ChatClient extends Frame {/** * @param args */public static void main(String[] args) {new ChatClient().lanchFrame();}public void lanchFrame() {this.setLocation(400, 400);this.setSize(300, 300);setVisible(true);}}

效果图

     

以上只是一个简单的布局，没什么实质性代码。下面给大家讲第二部分

import java.awt.BorderLayout;import java.awt.Frame;import java.awt.TextArea;import java.awt.TextField;public class ChatClient extends Frame {TextField tftext=new TextField();TextArea taContent=new TextArea();public static void main(String[] args) {new ChatClient().lanchFrame();}public void lanchFrame(){this.setLocation(400, 400);this.setSize(300, 300);add(tftext,BorderLayout.SOUTH);add(taContent,BorderLayout.NORTH);pack();setVisible(true);}}

第二次比着第一次多了一个输入框。此时只能用右下角的红色按钮关闭。

如图 红色的小正方形                                 

Chat0.3

import java.awt.BorderLayout;import java.awt.Frame;import java.awt.TextArea;import java.awt.TextField;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;public class ChatClient extends Frame {TextField tftext = new TextField();TextArea taContent = new TextArea();public static void main(String[] args) {new ChatClient().lanchFrame();}public void lanchFrame() {this.setLocation(400, 400);this.setSize(300, 300);add(tftext, BorderLayout.SOUTH);add(taContent, BorderLayout.NORTH);pack();this.addWindowListener(new WindowAdapter() {@Overridepublic void windowClosing(WindowEvent e) {// TODO Auto-generated method stubSystem.exit(0);}});setVisible(true);}}

相对Chat0.2，Chat0.3只多了一个点“X”就可以关闭的功能。不再上图。

Chat0.4

import java.awt.BorderLayout;import java.awt.Frame;import java.awt.TextArea;import java.awt.TextField;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;public class ChatClient extends Frame {TextField tftext = new TextField();TextArea taContent = new TextArea();public static void main(String[] args) {new ChatClient().lanchFrame();}public void lanchFrame() {this.setLocation(400, 400);this.setSize(300, 300);add(tftext, BorderLayout.SOUTH);add(taContent, BorderLayout.NORTH);pack();this.addWindowListener(new WindowAdapter() {@Overridepublic void windowClosing(WindowEvent e) {// TODO Auto-generated method stubSystem.exit(0);}});tftext.addActionListener(new TFListener());setVisible(true);}private class TFListener implements ActionListener{@Overridepublic void actionPerformed(ActionEvent e) {String s=tftext.getText().trim();taContent.setText(s);tftext.setText("");}}}

Chat0.4在输入框内输入内容后按回车键可以直接发送。

Chat0.5比0.4多了一个服务端。废话不多说，直接上代码。

import java.io.IOException;import java.net.ServerSocket;public class ChatServer {public static void main(String[] args) {try {ServerSocket ss=new ServerSocket(8888);} catch (IOException e) {e.printStackTrace();System.out.println("a client connected");}}}

ChatClient.java

   

import java.awt.BorderLayout;import java.awt.Frame;import java.awt.TextArea;import java.awt.TextField;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;public class ChatClient extends Frame {TextField tftext = new TextField();TextArea taContent = new TextArea();public static void main(String[] args) {new ChatClient().lanchFrame();}public void lanchFrame() {this.setLocation(400, 400);this.setSize(300, 300);add(tftext, BorderLayout.SOUTH);add(taContent, BorderLayout.NORTH);pack();this.addWindowListener(new WindowAdapter() {@Overridepublic void windowClosing(WindowEvent e) {// TODO Auto-generated method stubSystem.exit(0);}});tftext.addActionListener(new TFListener());setVisible(true);}private class TFListener implements ActionListener{@Overridepublic void actionPerformed(ActionEvent e) {String s=tftext.getText().trim();taContent.setText(s);tftext.setText("");}}}

Chat0.6

   ChatServer.java

import java.io.IOException;import java.net.ServerSocket;import java.net.Socket;public class ChatServer {public static void main(String[] args) {try {ServerSocket ss=new ServerSocket(8888);while(true){Socket s=ss.accept();System.out.println("a client connected");}} catch (IOException e) {e.printStackTrace();}}}

ChatClient.java

import java.awt.BorderLayout;import java.awt.Frame;import java.awt.TextArea;import java.awt.TextField;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;import java.io.IOException;import java.net.Socket;import java.net.UnknownHostException;public class ChatClient extends Frame {TextField tftext = new TextField();TextArea taContent = new TextArea();public static void main(String[] args) {new ChatClient().lanchFrame();}public void lanchFrame() {this.setLocation(400, 400);this.setSize(300, 300);add(tftext, BorderLayout.SOUTH);add(taContent, BorderLayout.NORTH);pack();this.addWindowListener(new WindowAdapter() {@Overridepublic void windowClosing(WindowEvent e) {// TODO Auto-generated method stubSystem.exit(0);}});tftext.addActionListener(new TFListener());setVisible(true);connect();}public void connect(){try {Socket s=new Socket("127.0.0.1",8888);System.out.println("connect");} catch (UnknownHostException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}private class TFListener implements ActionListener{@Overridepublic void actionPerformed(ActionEvent e) {String s=tftext.getText().trim();taContent.setText(s);tftext.setText("");}}}

Chat0.7

ChatServer.java

import java.io.DataInputStream;import java.io.IOException;import java.net.ServerSocket;import java.net.Socket;public class ChatServer {public static void main(String[] args) {try {ServerSocket ss=new ServerSocket(8888);while(true){Socket s=ss.accept();System.out.println("a client connected");            DataInputStream dis=new DataInputStream(s.getInputStream());            String str=dis.readUTF();            dis.close();            System.out.println(str);}} catch (IOException e) {e.printStackTrace();}}}

ChatClient.java

import java.awt.BorderLayout;import java.awt.Frame;import java.awt.TextArea;import java.awt.TextField;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;import java.io.DataOutputStream;import java.io.IOException;import java.net.Socket;import java.net.UnknownHostException;public class ChatClient extends Frame {Socket s=null;TextField tftext = new TextField();TextArea taContent = new TextArea();public static void main(String[] args) {new ChatClient().lanchFrame();}public void lanchFrame() {this.setLocation(400, 400);this.setSize(300, 300);add(tftext, BorderLayout.SOUTH);add(taContent, BorderLayout.NORTH);pack();this.addWindowListener(new WindowAdapter() {@Overridepublic void windowClosing(WindowEvent e) {// TODO Auto-generated method stubSystem.exit(0);}});tftext.addActionListener(new TFListener());setVisible(true);connect();}public void connect(){try {   s=new Socket("127.0.0.1",8888);System.out.println("connect");} catch (UnknownHostException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}private class TFListener implements ActionListener{@Overridepublic void actionPerformed(ActionEvent e) {String str=tftext.getText().trim();taContent.setText(str);tftext.setText("");try {DataOutputStream dos=new DataOutputStream(s.getOutputStream());dos.writeUTF(str);dos.flush();dos.close();} catch (IOException e1) {// TODO Auto-generated catch blocke1.printStackTrace();}}}}

Chat0.8

ChatServer.java

import java.io.DataInputStream;import java.io.IOException;import java.net.ServerSocket;import java.net.Socket;public class ChatServer {public static void main(String[] args) {Boolean started=false;try {ServerSocket ss=new ServerSocket(8888);started=true;while(started){ Boolean bconnect=false;Socket s=ss.accept();System.out.println("a client connected");             bconnect=true;            DataInputStream dis=new DataInputStream(s.getInputStream());                          while(bconnect){            String str=dis.readUTF();            System.out.println(str);            }            dis.close();            }} catch (IOException e) {e.printStackTrace();}}}

ChatClient.java

import java.awt.BorderLayout;import java.awt.Frame;import java.awt.TextArea;import java.awt.TextField;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;import java.io.DataOutputStream;import java.io.IOException;import java.net.Socket;import java.net.UnknownHostException;public class ChatClient extends Frame {Socket s=null;DataOutputStream dos=null;TextField tftext = new TextField();TextArea taContent = new TextArea();public static void main(String[] args) {new ChatClient().lanchFrame();}public void lanchFrame() {this.setLocation(400, 400);this.setSize(300, 300);add(tftext, BorderLayout.SOUTH);add(taContent, BorderLayout.NORTH);pack();this.addWindowListener(new WindowAdapter() {@Overridepublic void windowClosing(WindowEvent e) {disconnect();System.exit(0);}});tftext.addActionListener(new TFListener());setVisible(true);connect();}public void connect(){try {   s=new Socket("127.0.0.1",8888);   dos=new DataOutputStream(s.getOutputStream());System.out.println("connect");} catch (UnknownHostException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}public void disconnect(){try {dos.close();s.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}private class TFListener implements ActionListener{@Overridepublic void actionPerformed(ActionEvent e) {String str=tftext.getText().trim();taContent.setText(str);tftext.setText("");try {dos.writeUTF(str);dos.flush();//dos.close();} catch (IOException e1) {// TODO Auto-generated catch blocke1.printStackTrace();}}}}

最终效果图

可以输入多个，Service可以接收多个。