java编写简单聊天界面？java编写的简单窗体
各位老铁们，大家好，今天由我来为大家分享java编写简单聊天界面，以及java编写的简单窗体的相关问题知识，希望对大家有所帮助。如果可以帮助到大家，还望关注收藏下本站，您的支持是我们最大的动力，谢谢大家了哈，下面我们开始吧！
求用Java编写的聊天室界面
jsp的
<%@ page language="java" contentType="text/html; charset=gb2312"
pageEncoding="gb2312"%>
<!DOCTYPE HTML PUBLIC"-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>欢乐聊天室</title>
</head>
<body>
<%--首先取出用户提交的代号名称,保存在变量chatid中--%>
<%
String chatid= new String();
chatid= request.getParameter("inputid");
%>
<%--使用变量flag来标记用户输入是否合法,如果合法,则flag为true--%>
<%
boolean flag;
flag= true;
if(chatid== null){
chatid="";
}
if(chatid.length()== 0){
flag= false;
}
%>
<%--比较用户所输入的id和目前聊天室中存在的所有id--%>
<%
for(int i=1; i<=6&& flag; i++){
String itemp= new String();
itemp= itemp.valueOf(i);
int num;
String numtemp= new String();
String temp= new String();
temp="room"+ itemp+"usernum";
numtemp=(String)application.getAttribute(temp);
if(numtemp== null){
numtemp="0";
application.setAttribute(temp,numtemp);
}
num= Integer.parseInt(numtemp);
for(int j=1; j<=num&& flag; j++){
String jtemp= new String();
jtemp= jtemp.valueOf(j);
%>
<%--从application对象中取出第i个聊天室中第j个用户的id,temp变量保存的是application对象用于保存第i个聊天室中第j个用户的id相应的变量名--%>
<%
temp="room"+ itemp+"user"+ jtemp;
String usertemp= new String();
usertemp=(String)application.getAttribute(temp);
if(usertemp.equalsIgnoreCase(chatid)){
flag= false;
}
}
}
int nnn[]= new int[6];
if(flag){
String temproom= new String();
temproom=(String)session.getValue("chatroom");
if(temproom== null){
session.putValue("chatid",chatid);
}
for(int i=1; i<=6; i++){
String itemp= new String();
itemp= itemp.valueOf(i);
int num;
String numtemp= new String();
String temp= new String();
temp="room"+ itemp+"usernum";
numtemp=(String)application.getAttribute(temp);
if(numtemp== null){
numtemp="0";
}
num= Integer.parseInt(numtemp);
nnn[i-1]= num;
}
}
%>
<p align="center"><b><font face="隶书" size="6" color="#FF00FF">欢乐聊天室</font></b></p>
<%
if(flag){
%>
<p align="center"><font color="red"><%=chatid%></font>您好,请选择感兴趣的聊天室!</p>
<center><table border="1" width="370">
<tr>
<td width="50%"><a rel="external nofollow" href="JSPchat.jsp?chatroom=1">今天我们相识(<%=nnn[0]%>)</a></td>
<td width="50%"><a rel="external nofollow" href="JSPchat.jsp?chatroom=2">校园的那条小路(<%=nnn[1]%>)</a></td>
</tr>
<tr>
<td width="50%"><a rel="external nofollow" href="JSPchat.jsp?chatroom=3">职场淘金(<%=nnn[2]%>)</a></td>
<td width="50%"><a rel="external nofollow" href="JSPchat.jsp?chatroom=4">网络技术交流(<%=nnn[3]%>)</a></td>
</tr>
<tr>
<td width="50%"><a rel="external nofollow" href="JSPchat.jsp?chatroom=5">世界体育大看台(<%=nnn[4]%>)</a></td>
<td width="50%"><a rel="external nofollow" href="JSPchat.jsp?chatroom=6">新闻背后的故事(<%=nnn[5]%>)</a></td>
</tr>
</table><center>
<%
}else{
%>
<center><p>id不能为空,或者此id已经被使用,请重新选择!</p><center>
<p><center><a rel="external nofollow" href="login.html">返回</a><center></p>
<%
}
%>
</body>
</html>
给我提供一个Java编写的聊天工具原代码
//聊天室的客户端
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(j>0) 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("B<L 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;i<clients.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;i<clients.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){
}
}
以上代码由于界面限制的原因可能有点儿乱
把它整个复制出去重新整理修改一下就行了
如何用C语言编写一个简单的聊天室程序
聊天室的话涉及网络通信。流程大概是：
客户端连接服务器（登陆，上传相应的数据（起码有聊天室编号））
客户端发生消息给服务器（消息+聊天室编号）
服务器根据客户端上传的聊天室编号广播消息
客户端接受服务器传来的消息
用到的技术就是socket编程（应该有其他的现成的框架，不过我用得比较多的是java，不清楚c的），如果还想做个界面的话，可以用qt做，或者MFC，应该还有其他可选方式，不过我不知道~~~。
上面只是简单的，你要做完备的还有很多问题需要考虑，比如说加密数据，优化使其能容纳较多的用户，服务器崩溃时的处理方案等等。
关于本次java编写简单聊天界面和java编写的简单窗体的问题分享到这里就结束了，如果解决了您的问题，我们非常高兴。