聊天工具小程序

注:小实验,非完成的作品.

SERVER端:

import java.awt.*;import java.awt.event.*;import java.io.*;import javax.swing.*;import java.net.*;public class TextEditor {JFrame ft=new JFrame("TextEditor");TextArea ta=new TextArea("",80,60);JTextField tf=new JTextField();BorderLayout bl=new BorderLayout(20,20);//ft.setSize(800,600);JMenuBar mb=new JMenuBar();JMenu m=new JMenu("Menu");JMenuItem mis=new JMenuItem("Save");JMenuItem mie=new JMenuItem("Exit");String str="Great";BufferedReader in;PrintWriter out;void init() {ft.setLayout(bl);Jiant jt=new Jiant(this);Record r=new Record(this);ft.setSize(800,600);mis.addActionListener(jt);mie.addActionListener(jt);ta.addKeyListener(r);tf.setActionCommand("TF");tf.addActionListener(jt);//ta.setAutoscrolls(true);m.add(mis);m.add(mie);mb.add(m);ft.add(ta,BorderLayout.CENTER);ft.add(tf,BorderLayout.SOUTH);ft.addWindowListener(r);ft.setJMenuBar(mb);ft.setVisible(true);}public static void main(String args[]) {//TextEditor te=new TextEditor();TextEditor te=new TextEditor();te.init();try {ServerSocket ss=new ServerSocket(7777);Socket client=ss.accept();te.in=new BufferedReader(new InputStreamReader(client.getInputStream()));te.out=new PrintWriter(client.getOutputStream(),true);while(true) {te.ta.append("Client says: "+te.in.readLine()+"\n");}} catch (Exception e) {}}}class Jiant implements ActionListener {TextEditor te;Jiant(TextEditor tec) {te=tec;}public void actionPerformed(ActionEvent e) {if((e.getActionCommand()).equals("Save")) {//Listen to Save//te.ta.insert("this is a great test",0);try {FileDialog fd=new FileDialog(te.ft,"Select or New file",FileDialog.SAVE);fd.setVisible(true);String fn=fd.getDirectory()+fd.getFile();System.out.println(fn);te.str=te.ta.getText();PrintWriter pw=new PrintWriter(new FileOutputStream(fn,true));pw.print(te.str); pw.close();} catch (Exception en) {}}if((e.getActionCommand()).equals("Exit")) {//Listen to Exit//te.in.close();//te.out.close();te.ta.insert(te.str,0);}if((e.getActionCommand()).equals("TF")) { //output to client------te.ta.append(te.tf.getText()+"\n");te.out.println(te.tf.getText());te.tf.setText("");}}}class Record implements KeyListener ,WindowListener{TextEditor te;Record(TextEditor tec) {te=tec;}public void keyPressed(KeyEvent e) {}public void keyReleased(KeyEvent e) {}public void keyTyped(KeyEvent e) {//te.str+=e.getKeyChar();}public void windowClosing(WindowEvent e) {System.exit(0);}public void windowClosed(WindowEvent e){}public void windowIconified(WindowEvent e) {}public void windowDeiconified(WindowEvent e){}public void windowActivated(WindowEvent e){}public void windowDeactivated(WindowEvent e){}public void windowOpened(WindowEvent e) {}}

CLIENT端:

import java.io.*;import java.net.*;import java.awt.*;import java.awt.event.*;class NewClient extends Frame implements ActionListener{BorderLayout bl=new BorderLayout(20,20);TextArea ta=new TextArea();TextField tf=new TextField();private Socket client;String serverAddress = "127.0.0.1";int port = 7777;BufferedReader in;PrintWriter out;NewClient(){   try{   setLayout(bl);   add(ta,BorderLayout.CENTER);   add(tf,BorderLayout.SOUTH);   tf.addActionListener(this);   setVisible(true);    client = new Socket(serverAddress,port);String check;  //  BufferedReader sin = new BufferedReader(new InputStreamReader(System.in));in=new BufferedReader(new InputStreamReader(client.getInputStream()));    out = new PrintWriter(client.getOutputStream(),true);while(true) {//check=sin.readLine();//    out.println("Client says: "+sin.readLine() + "/n");check=in.readLine();if(check.equals("exit")) break;    ta.append("Message from server: " + check+"\n");   }    in.close();    out.close();    client.close();   }catch(Exception e){    e.printStackTrace();   }}public static void main(String[] args){   new NewClient();}public void actionPerformed(ActionEvent e) {String str=tf.getText();ta.append(str+"\n");out.println(str);tf.setText("");}} 

收获:之前都是用命令行写server端和client端,只能实现你说一句我说一句的阻塞式交流.

今天的聊天工具加入了图形界面.同时在main函数中,让输入端一直从管道监听,对方只要有输入就写到TEXTAREA中去. 然后用时间监听

TEXTFIELD,巧回车就将textField中的数据写出. 这样将输入输出分开在不同模块...使输入输出不再相互阻塞...这个就实现了我们像QQ一样的聊天.