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php简易聊天室代码(php聊天室开发代码)

admin 发布:2022-12-19 22:51 155


本篇文章给大家谈谈php简易聊天室代码,以及php聊天室开发代码对应的知识点,希望对各位有所帮助,不要忘了收藏本站喔。

本文目录一览:

急求一个简易聊天室的代码

这个应该可以的拉:

import java.applet.*;

import java.awt.*;

import java.io.*;

import java.net.*;

import java.awt.event.*;

public class ChatClient extends Applet{

protected boolean loggedIn;//登入状态

protected Frame cp;//聊天室框架

protected static int PORTNUM=7777; //缺省端口号7777

protected int port;//实际端口号

protected Socket sock;

protected BufferedReader is;//用于从sock读取数据的BufferedReader

protected PrintWriter pw;//用于向sock写入数据的PrintWriter

protected TextField tf;//用于输入的TextField

protected TextArea ta;//用于显示对话的TextArea

protected Button lib;//登入按钮

protected Button lob;//登出的按钮

final static String TITLE ="Chatroom applet";

protected String paintMessage;//发表的消息

public ChatParameter Chat;

public void init(){

paintMessage="正在生成聊天窗口";

repaint();

cp=new Frame(TITLE);

cp.setLayout(new BorderLayout());

String portNum=getParameter("port");//呢个参数勿太明

port=PORTNUM;

if (portNum!=null) //书上是portNum==null,十分有问题

port=Integer.parseInt(portNum);

//CGI

ta=new TextArea(14,80);

ta.setEditable(false);//read only attribute

ta.setFont(new Font("Monospaced",Font.PLAIN,11));

cp.add(BorderLayout.NORTH,ta);

Panel p=new Panel();

Button b;

//for login button

p.add(lib=new Button("Login"));

lib.setEnabled(true);

lib.requestFocus();

lib.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e){

login();

lib.setEnabled(false);

lob.setEnabled(true);

tf.requestFocus();//将键盘输入锁定再右边的文本框中

}

});

//for logout button

p.add(lob=new Button ("Logout"));

lob.setEnabled(false);

lob.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

logout();

lib.setEnabled(true);

lob.setEnabled(false);

lib.requestFocus();

}

});

p.add(new Label ("输入消息:"));

tf=new TextField(40);

tf.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

if(loggedIn){

//pw.println(Chat.CMD_BCAST+tf.getText());//Chat.CMD....是咩野来?

int j=tf.getText().indexOf(":");

if(j0) pw.println(Chat.CMD_MESG+tf.getText());

else

pw.println(Chat.CMD_BCAST+tf.getText());

tf.setText("");//勿使用flush()?

}

}

});

p.add(tf);

cp.add(BorderLayout.SOUTH,p);

cp.addWindowListener(new WindowAdapter(){

public void windowClosing(WindowEvent e){

//如果执行了setVisible或者dispose,关闭窗口

ChatClient.this.cp.setVisible(false);

ChatClient.this.cp.dispose();

logout();

}

});

cp.pack();//勿明白有咩用?

//将Frame cp放在中间

Dimension us=cp.getSize(),

them=Toolkit.getDefaultToolkit().getScreenSize();

int newX=(them.width-us.width)/2;

int newY=(them.height-us.height)/2;

cp.setLocation(newX,newY);

cp.setVisible(true);

paintMessage="Window should now be visible";

repaint();

}

//登录聊天室

public void login(){

if(loggedIn) return;

try{

sock=new Socket(getCodeBase().getHost(),port);

is=new BufferedReader(new InputStreamReader(sock.getInputStream()));

pw=new PrintWriter(sock.getOutputStream(),true);

}catch(IOException e){

showStatus("Can't get socket: "+e);

cp.add(new Label("Can't get socket: "+e));

return;}

//构造并且启动读入器,从服务器读取数据,输出到文本框中

//这里,长成一个线程来避免锁住资源(lockups)

new Thread (new Runnable(){

public void run(){

String line;

try{

while(loggedIn ((line=is.readLine())!=null))

ta.appendText(line+"\n");

}catch(IOException e){

showStatus("我的天啊,掉线了也!!!!");

return;

}

}

}).start();

//假定登录(其实只是打印相关信息,并没有真正登录)

// pw.println(Chat.CMD_LOGIN+"AppletUser");

pw.println(Chat.CMD_LOGIN+"AppletUser");

loggedIn =true;

}

//模仿退出的代码

public void logout(){

if(!loggedIn)

return;

loggedIn=false;

try{

if(sock!=null)

sock.close();

}catch(IOException ign){

// 异常处理哦

}

}

//没有设置stop的方法,即使从浏览器跳到另外一个网页的时候

//聊天程序还可以继续运行

public void paint(Graphics g){

Dimension d=getSize();

int h=d.height;

int w=d.width;

g.fillRect(0,0,w,2);

g.setColor(Color.black);

g.drawString(paintMessage,10,(h/2)-5);

}

}

聊天室服务器端

import java.net.*;

import java.io.*;

import java.util.*;

public class ChatServer{

//聊天室管理员ID

protected final static String CHATMASTER_ID="ChatMaster";

//系统信息的分隔符

protected final static String SEP=": ";

//服务器的Socket

protected ServerSocket servSock;

//当前客户端列表

protected ArrayList clients;

//调试标记

protected boolean DEBUG=false;

public ChatParameter Chat;

//主方法构造一个ChatServer,没有返回值

public static void main(String[] argv){

System.out.println("Chat server0.1 starting");

ChatServer w=new ChatServer();

w.runServer();

System.out.println("***ERROR*** Chat server0.1 quitting");

}

//构造和运行一个聊天服务

ChatServer(){

Chat=new ChatParameter();

clients=new ArrayList();

try{

servSock=new ServerSocket(7777);//实有问题拉,不过可能是他自己定义既一个class.

System.out.println("Chat Server0.1 listening on port:"+7777);

}catch(Exception e){

log("IO Exception in ChatServer.init");

System.exit(0);

}

}

public void runServer(){

try{

while(true){

Socket us=servSock.accept();

String hostName=us.getInetAddress().getHostName();

System.out.println("Accpeted from "+hostName);

//一个处理的线程

ChatHandler cl=new ChatHandler(us,hostName);

synchronized(clients){

clients.add(cl);

cl.start();

if(clients.size()==1)

cl.send(CHATMASTER_ID,"Welcome!You are the first one here");

else{

cl.send(CHATMASTER_ID,"Welcome!You are the latest of"+

clients.size()+" users.");

}

}

}

}catch(Exception e){

log("IO Exception in runServer:"+e);

System.exit(0);

}

}

protected void log(String s){

System.out.println(s);

}

//处理会话的内部的类

protected class ChatHandler extends Thread {

//客户端scoket

protected Socket clientSock;

//读取socket的BufferedReader

protected BufferedReader is ;

//在socket 上发送信息行的PrintWriter

protected PrintWriter pw;

//客户端出主机

protected String clientIP;

//句柄

protected String login;

public ChatHandler (Socket sock,String clnt)throws IOException {

clientSock=sock;

clientIP=clnt;

is=new BufferedReader(

new InputStreamReader(sock.getInputStream()));

pw=new PrintWriter (sock.getOutputStream(),true);

}

//每一个ChatHandler是一个线程,下面的是他的run()方法

//用于处理会话

public void run(){

String line;

try{

while((line=is.readLine())!=null){

char c=line.charAt(0);//我顶你老母啊 ,果只Chat.CMD咩xx冇定义 扑啊///!!!

line=line.substring(1);

switch(c){

//case Chat.CMD_LOGIN:

case 'l':

if(!Chat.isValidLoginName(line)){

send(CHATMASTER_ID,"LOGIN"+line+"invalid");

log("LOGIN INVALID from:"+clientIP);

continue;

}

login=line;

broadcast(CHATMASTER_ID,login+" joins us,for a total of"+

clients.size()+" users");

break;

// case Chat.CMD_MESG:

case 'm':

if(login==null){

send(CHATMASTER_ID,"please login first");

continue;

}

int where =line.indexOf(Chat.SEPARATOR);

String recip=line.substring(0,where);

String mesg=line.substring (where+1);

log("MESG: "+login+"---"+recip+": "+mesg);

ChatHandler cl=lookup(recip);

if(cl==null)

psend(CHATMASTER_ID,recip+"not logged in.");

else

cl.psend(login,mesg);

break;

//case Chat.CMD_QUIT:

case 'q':

broadcast(CHATMASTER_ID,"Goodbye to "+login+"@"+clientIP);

close();

return;//ChatHandler结束

// case Chat.CMD_BCAST:

case 'b':

if(login!=null)

broadcast(login,line);

else

log("BL FROM"+clientIP);

break;

default:

log("Unknow cmd"+c+"from"+login+"@"+clientIP);

}

}

}catch(IOException e){

log("IO Exception :"+e);

}finally{

//sock 结束,我们完成了

//还不能发送再见的消息

//得有简单的基于命令的协议才行

System.out.println(login+SEP+"All Done");

synchronized(clients){

clients.remove(this);

if(clients.size()==0){

System.out.println(CHATMASTER_ID+SEP+

"I'm so lonely I could cry");

}else if(clients.size()==1){

ChatHandler last=(ChatHandler)clients.get(0);

last.send(CHATMASTER_ID,"Hey,you are talking to yourself again");

}

else{

broadcast(CHATMASTER_ID,"There are now"+clients.size()+" users");

}

}

}

}

protected void close(){

if(clientSock==null){

log("close when not open");

return;

}

try{

clientSock.close();

clientSock=null;

}catch(IOException e){

log("Failure during close to "+clientIP);

}

}

//发送一条消息给用户

public void send(String sender,String mesg){

pw.println(sender+SEP+"*"+mesg);

}

//发送私有的消息

protected void psend(String sender ,String msg){

send("*"+sender+"*",msg);

}

//发送一条消息给所有的用户

public void broadcast (String sender,String mesg){

System.out.println("Broadcasting"+sender+SEP+mesg);

for(int i=0;iclients.size();i++){

ChatHandler sib=(ChatHandler)clients.get(i);

if(DEBUG)

System.out.println("Sending to"+sib);

sib.send(sender,mesg);

}

if(DEBUG) System.out.println("Done broadcast");

}

protected ChatHandler lookup(String nick){

synchronized(clients){

for(int i=0;iclients.size();i++){

ChatHandler cl=(ChatHandler)clients.get(i);

if(cl.login.equals(nick))

return cl;

}

}

return null;

}

//将ChatHandler对象转换成一个字符串

public String toString(){

return "ChatHandler["+login+"]";

}

}

}

public class ChatParameter {

public static final char CMD_BCAST='b';

public static final char CMD_LOGIN='l';

public static final char CMD_MESG='m';

public static final char CMD_QUIT='q';

public static final char SEPARATOR=':';//?????

public static final int PORTNUM=7777;

public boolean isValidLoginName(String line){

if (line.equals("CHATMASTER_ID"))

return false;

return true;

}

public void main(String[] argv){

}

}

记得加分啊!!!

php聊天室代码替换

所谓的无刷新,其实是用一个隐藏的FRAME进行刷新,每次刷新后把内容添加到可见窗口的后面。

不是改一两个语句就能完成的,需要增加文件,添加内容到可见FRAME是使用JS实现的。

制作一个php的登陆页面 无需连接数据库 只需要昵称就能进入的聊天室

这里假设你的主页是index.php,登录前页面是login.php,用户名user1的密码为123。当然,给你提供的是PHP方法,所以你必须配置好了PHP并且每页都必须是PHP。

每个需要登录后查看的页面的开始写(一定要最开始,前面不能有任何字符包括回车或者空格)

?php session_start();if(!isset($_SESSION['pass']))header("Location: login.php");?

在登录页面最开始写:

?php session_start();$usr=array('user1'='123','user2'='456');if(isset[$_POST['usr']]isset[$_POST['pwd']]isset[$usr[$_POST['usr']]]$_POST['pwd']==$usr[$_POST['usr']])$_SESSION['pass']=1;if(isset($_SESSION['pass']))header("Location: index.php");?

登录页内容里必须有form元素具有method属性值为post。

form元素里必须具有两个input具有name属性值分别为usr和pwd,最后一个按钮建议用input type=submit。例如:

form method="post"

Name: input name="usr"/br/

Password: input name="pwd"/br/

input type="submit" value="login"/

/form

直接写的没测试,希望能正确吧。

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