本文实例讲述了Python实现的使用telnet登陆聊天室。分享给大家供大家参考。具体如下： 前久在家学习Python的时候写的一个简单的聊天室，可以使用telnet来登陆。 遗憾的是现在对中文的支持很差，英文聊天倒是没什么问题了。 功能很简单的，应该没有你想象的那么强大，但是你如果有兴趣的话可以试试的。 另外，让我惊奇的是它可以在Android的平板上运行SL4A的Python解释器上运行(需要稍微改几句代码，貌似是编码的那个地方，我记不清了)。 现在这个是可以在PC上跑起来的。 废话不多，直接放代码了，就一个py文件而已，而且注释是乱七八糟的，编码风格也不好(好神似我在用类C语言的习惯)。 ?
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 | # Filename: ChatRoomServer.py import threading import datetime import socket # a simple log function def log(lg): print(lg) # Chat room server listen thread class, this class is use for listening client login # when a client request to connect server, this class will start a connect thread class ServerListenThread(threading.Thread): def __init__(self, hostname, port, accept): threading.Thread.__init__(self) self.hostname = hostname self.port = port self.accept = accept self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) self.sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) self.sock.bind((hostname, port)) self.sock.listen(0) log('ServerIp:%s ServerPort:%s waiting for client...'%self.sock.getsockname()) def run(self): clientid = 1 while True: client, cltadd = self.sock.accept() log('a request from Id=%s%s'%('%d Address:'%clientid , cltadd)) if self.accept(clientid, client): clientid = clientid + 1 # Connect thread class, this class is use for connecting with client and receiving client's message class ServerConnectThread(threading.Thread): def __init__(self, clientid, client, encoding, receive, disconnect): threading.Thread.__init__(self) self.client = client self.clientid = clientid self.encoding = encoding self.receive = receive self.disconnect = disconnect self.clientname = None self.inputs = self.client.makefile('rb', 0) self.outputs = self.client.makefile('wb', 0) def run(self): self.sendstring('Input your name:') while True: string = self.readline() if string: string = string.lstrip() if len(string)>0: self.receive(self, string) else: self.inputs.close() self.outputs.close() break if self.clientname: self.disconnect(self) def sendstring(self, string): self.sendbytes(bytes(string, self.encoding)) def sendbytes(self, bts): self.outputs.write(bts) def readline(self): rec = self.inputs.readline() if rec: string = bytes.decode(rec, self.encoding) if len(string)>2: string = string[0:-2] else: string = ' ' else: string = False return string # Chat room server class, this class is constitute of a listen thread and many connect thread class ChatRoomServer: def __init__(self, ip='0.0.0.0', port=9113, encoding='utf-8'): self.hostname = ip self.encoding = encoding self.port = port self.clients = {} self.clientnames = {} def whenconnect(self, clientid, client): log('a connect with Id=%s%s'%('%d Address:'%clientid , client.getpeername())) connect = ServerConnectThread(clientid, client, self.encoding, self.whenreceive, self.whenexit) connect.start() return True def whenreceive(self, client, string): log('frome %d, receive:%s (%d)'%(client.clientid, string, len(string))) if client.clientname: if string[0]=='.': self.handlecmd(client, string[1:]) else: now = datetime.datetime.now() sendstring = '%s %srn %srn'%(now, client.clientname, string) self.sendtoall(sendstring, client) else: if self.clientnames.__contains__(string): client.sendstring('%s is exited!!!rn'%string) else: client.clientname = string client.sendstring('Hell, %s!!!rn'%client.clientname) self.addclient(client) return True def whenexit(self, client): self.delclient(client) return True def handlecmd(self, client, cmd): log('cmd: %s'%cmd) if cmd=='user': client.sendstring('User list(%d):rn'%len(self.clients)) for i in self.clients: clt = self.clients[i] client.sendstring(' %dt%srn'%(clt.clientid, clt.clientname)) else: client.sendstring('Unknow command: %s:rn'%cmd) def start(self): serverlisten = ServerListenThread(self.hostname, self.port, self.whenconnect) serverlisten.start() def sendtoall(self, string, notfor): sends = bytes(string, self.encoding) for i in self.clients: if not(notfor and notfor.clientid==i): self.clients[i].sendbytes(sends) def addclient(self, client): self.sendtoall('%s logined!!!rn'%client.clientname, client) self.clients[client.clientid] = client self.clientnames[client.clientname] = client.clientid def delclient(self, client): self.sendtoall('%s logouted!!!rn'%client.clientname, client) del self.clients[client.clientid] del self.clientnames[client.clientname] # start a chat room server ChatRoomServer().start() |
有了这个服务器程序之后就可以了(当然前提是你安装的Python解释器)，没有客户端的，那么你会问怎么开始聊天呢? 下面开始介绍怎么开始聊天，首先你把这个文件运行起来，如下图可以看到服务器正在等待客户端登陆了：
客户端直接使用telnet命令登陆，注意端口应该和服务器的一样，命令为：telnet 127.0.0.1 9011，自动打开telnet控制台，输入自己的名字吧：
现在你在看看服务器端的控制台界面，可以看到记录了登陆消息：
继续使用telnet登陆另外的用户之后就可以聊天了：
功能很简陋了，不过这让我想起了二三十年前的事，嘿嘿，那时候应该就是这样子聊天的了吧，生在这个时代的我们永远都体会不到那种乐趣了。 希望本文所述对大家的Python程序设计有所帮助。
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