简易聊天室,简易聊天室课程设计

http://www.itjxue.com  2023-01-13 22:36  来源:未知  点击次数: 

怎么用VBscript制作一个简易聊天室?我姐姐 急要哇..

1、 打开Dreamweaver后,新建站点,选择新建的本地站点,右击创建文件夹,命名为比如chat,创建文件夹后,选择该文件夹,在该文件夹下新建两个ASP文件,分别命名为welcome.asp和chat.asp。2、 双击打开网页,选择welcome.asp网页,该网页制作为欢迎页面。在当前网页中输入文字,比如“欢迎进入聊天室”。可以选中“聊天室”将其字体颜色改为红色,字体大小也可以做适当的更改。将光标移置下一行,将插入栏切换于“表单”插入栏,插入表单。在“插入”菜单中选择插入一行三列的表格,表格的宽度我们设置为400像素,边框设为1,其它的默认。选择第一个单元格,在其中输入“呢称”,在第二单元格中,插入“文本字段”表单,第三单元格插入一个“提交”按钮。设置各表单的属性,首先将第一单元格中的字体居中,选择第二单元格中的“文本字段”,在属性面板中将其名称改为name,字段大小可以设为20。选择第三个单元格中的按钮,将“提交”改为“进入”选择“提交表单”动作(默认)。选择整个表单,在属性面板的动作中加入welcome.asp让其在判断错误后转回到当前页面。表单制作完成后,在绑定面板中“请求变量”,在类型中选择“Request.Form”,名称为“name”,点确定后,再请求“阶段变量”,将名称也设置为“name”,单击确定。将页面切换到代码视图,在顶端%@LANGUAGE=”VBSCRIPT” CODEPAGE=”936”%以下加入以下代码:% If Request.Form(“name”)”” thenSession(“name”)=Request.Form(“name”)Response.Redirect(“chat.asp”)%%End If %3、 打开chat.asp网页,将插入栏切换至表单视图,插入表单。在插入菜单中选择表格,插入一个一行三列的表格,表格宽度设为400像素,边框为1,其它默认。在表格的第二个单元格中插入一个“文本字段”表单。第三个单元格中插入一个“按钮”表单。将第一个单元格的宽度设为80。选择第二个单元格中的“文本字段”,在属性面板中设置名称为say。第三个单元格中的按钮选中,在属性面板中,其名称将“提交”改为“发言”。选中整个表单,在动作中输入chat.asp。制作完成后,选择“绑定面板”点击添加,选择“请求变量”,选择类型为Request.Form,名称为say。再添加“应用程序变量”,名称定义为chat。完成后,拖动相应的变量名称至网页相应的位置,如将Request.Form(”name”)拖动至表格的第一个单元格。将Application.chat拖动至表格的下一行的相应位置。将网页切换置代码视图,在顶端%@LANGUAGE=”VBSCRIPT” CODEPAGE=”936”%以下加入以下代码:%If Request.Form(“name”)=”” ThenResponse.Redirect(“welcome.asp”)%%End If % %If Request.Form(“say”)”” ThenApplication(“chat”)=session(“name”) “说:” Request.Form(“say”) “br” Application(“chat”)%%End If %4、右击选择“保存全部”将网页保存。选择welcome.asp网页,点击浏览。当我们不输任何内容,点击进入时,网页自动返回当前页,输入呢称后,点击进入将进入chat.asp页面。在文本字段中添加内容就可以在下面看到相应的发言内容。至此,简易的聊天室制作完毕。

linux C语言 TCP 多线程 简易聊天室

你accept得到一个新的连接后,再创建线程(把连接socket传给线程),用这个线程专门接收这个连接的数据,就不会有问题了。

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!!!

asp 实现一个简易的网上聊天室

用session实现,不过,你用户名不存数据库,你存哪时?TXT,这个速度太慢了.不建议

用JSP实现一个简易的网页版聊天室。

1.登录页面

文件名:know.jsp

%@?page?language="java"?import="java.util.*"?pageEncoding="utf-8"%

%

String?path?=?request.getContextPath();

String?basePath?=?request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

%

!DOCTYPE?HTML?PUBLIC?"-//W3C//DTD?HTML?4.01?Transitional//EN"

html

??head

????base?href="%=basePath%"

????

????title登录/title

????

????meta?http-equiv="pragma"?content="no-cache"

????meta?http-equiv="cache-control"?content="no-cache"

????meta?http-equiv="expires"?content="0"????

??/head

??body

??????form?action="know2.jsp"?method="post"

?????????input?type="text"?name="username"br/

?????????input?type="submit"?value="提交"/

??????/form

??/body

/html

2.聊天页面

文件名:know2.jsp

%@?page?language="java"?import="java.util.*"?pageEncoding="UTF-8"%

%

String?path?=?request.getContextPath();

String?basePath?=?request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

%

!DOCTYPE?HTML

html

??head

????base?href="%=basePath%"

????

????title聊天/title

????meta?http-equiv="pragma"?content="no-cache"

????meta?http-equiv="cache-control"?content="no-cache"

????meta?http-equiv="expires"?content="0"????

????meta?http-equiv="refresh"content="10;url=know2.jsp"

??/head

???style

??????????.container{

????????????position:relative;

????????????top:100px;

????????????margin:0?auto;

????????????width:?500px;

????????????height:?300px;

????????????border:?1px?solid?#aaa;

????????????overflow:?hidden;

??????????}

??????????.usrlist{

????????????width:?100px;

????????????height:?250px;

????????????background-color:?#bbb;

????????????display:?block;

????????????float:?left;

?????????????overflow:?scroll;

??????????}

??????????.chartinfo{

????????????width:?400px;

????????????height:?250px;

????????????background-color:?#ccc;

????????????display:?block;

????????????float:?left;

????????????overflow:?scroll;

??????????}

??????????.send{

????????????width:?500px;

????????????height:?50px;

????????????background-color:?#ddd;

????????????display:?block;

????????????float:?left;

??????????}

??????????select{

????????????width:?50px;

???????????}

???????/style

????%

????????ListString?chartInfo?=?new??ArrayListString();//保存聊天信息的集合

????????ListString?usrs1?=new??ArrayListString();//保存登录用户的集合

????????if(null!=application.getAttribute("chartinfo")){

???????????chartInfo?=??(ListString)application.getAttribute("chartinfo");

????????}

????????if(null!=application.getAttribute("users")){

???????????usrs1??=??(ListString)?application.getAttribute("users");

????????}

????????//form?提交过来的数据

????????String?username?=?request.getParameter("username");

????????String?say?=?request.getParameter("gang");

????????String?to_usr?=?request.getParameter("tousr");

????????

???????????if(null!=username!"".equals(username)){

????????????if(!usrs1.contains(username)){

?????????????usrs1.add(username);

?????????????session.setAttribute("users",username);

????????????}

???????????}

???????application.setAttribute("users",usrs1);//将user1集合放入application

???????

???????String?lgusr?=?"";

???????if(null!=session.getAttribute("users")){

?????????lgusr?=?(String)session.getAttribute("users");

???????}

???????if(lgusr.equals("")||null==lgusr){

????????response.setStatus(response.SC_MOVED_TEMPORARILY);

????????response.setHeader("Location",?"know.jsp");?

???????}

?????????String?chart="";

???????if(null!=to_usrnull!=say!"".equals(to_usr)!"".equals(say)){

???????????chart?=?lgusr+"?对???"+to_usr+"说:?"+say;

????????}

????????

????????if(!"".equals(chart)){

????????????chartInfo.add(chart);

????????}

????????application.setAttribute("chartinfo",?chartInfo);//将聊天信息集合?放入?application

?????%

??????

??body

???div?class="container"

?????div?class="usrlist"

????????%

?????????ListString?usrs??=??(ListString)?application.getAttribute("users");

?????????if(usrs.size()0){

?????????????for(String?u?:?usrs){

????????????????out.print(u);

????????????????out.print("br/");

?????????????}

?????????}

?????????%

?????/div

?????div?class="chartinfo"

????????%

?????//???out.print(chartInfo.size());

????????for(String?ct?:?chartInfo){

??????????out.print(ct);

??????????out.print("br/");

????????}

?????????%

?????/div

?????div?class="send"

?????form?method="post"?action="know2.jsp"

?????????span对??/span

??????????select?name="tousr"?

??????????option/option

?????????????%

?????????????for(String?u?:?usrs){

????????????????if(!u.equals(lgusr)){

??????????????????out.print("");

??????????????????out.print("option?value='"+u+"'"+u+"/option");

????????????????}

????????????????

?????????????}

??????????????%

??????????/select?

???????????span??说?:/span

???????????input?type="text"?name="gang"style="width:?300px;"

???????????input?type="submit"?value="发送"

???????????/form

?????/div

???/div

??/body

/html

这是两个jsp文件,分别是know.jsp 和know2.jsp。你说的功能基本上都达到。

2. 试编写一个ASP程序,实现一个简单的聊天室,能够显示发言人的姓名,发言内容和发

写过一段简易聊天代码,用XMLHttpRequest()。

页面布局、显示文字等,跟一般网页一样。

关键是怎样获得其他聊天者的文字信息。

XMLHttpRequest 对象可在后台获得服务器信息,而不是刷新页面。

试着用这个方法编写代码,不难的

(责任编辑:IT教学网)

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