一、项目简介

本项目主要基于python实现的多人聊天室，主要的功能如下：

• 登录注册
• 添加好友
• 与好友进行私聊
• 创建群聊
• 邀请/申请加入群聊
• 聊天发送图片
• 聊天发送表情
• 聊天发送文件
• 聊天记录保存在本地中
• 聊天过程中发送的文件保存本地

二、环境介绍

• python3.8
• mysql8.0
• tkinter：作为程序的gui库
• flask ：主要用于登录/注册、表情下载、信息修改等http请求等
• socket：主要用户聊天过程中消息发送、对方在线状态更新等
• pygame：用于播放新消息提示音

三、运行展示

登录：

注册：

登录后主界面：

点击右上方“修改资料”：

添加好友或群：

双击好友或群打开聊天窗口：

点击表情按钮选择发送的表情：

发送图片可以预览，点击文件名称直接打开：

四、关键代码

配置文件：server.conf

配置服务器ip、http端口、socket端口、数据库的账号密码、是否启用新消息提示音

[server]
SERVER_IP = 127.0.0.1
HTTP_PORT = 8000
SOCKET_PORT = 8001
SQLALCHEMY_DATABASE_URI = mysql://root:root@127.0.0.1:3306/chatdb
ENABLE_MUSIC = 0

服务端主要代码：ChatServer.py

维持Socket通信、开启Flask进行http

# controller定义
@app.route('/login', methods=['POST'])
def login():try:params = request.valueslogin_name = params['loginName']pwd = params['pwd']md5 = hashlib.md5()md5.update(pwd.encode(encoding='utf-8'))password = md5.hexdigest()users = Users.query.filter(Users.loginName == login_name)\.filter(Users.pwd == password).all()if len(users) == 0:return Result.fail('账号不存在或密码错误')else:# 服务返回uid，客户端打开好友界面后，凭借此uid与服务器进行socket连接uid = users[0].id# 已存在uid：已登录，重新登录，原登录退出连接，退出程序if uid in online_users.keys():# logoutconnection = online_users[int(uid)]send_msg = {'type': UtilsAndConfig.SYSTEM_LOGOUT}connection.send(json.dumps(send_msg).encode())online_users[uid] = Nonereturn Result.success(uid)except Exception as e:return Result.fail('参数异常')# 监听socket
def socket_listen_thread():while True:connection, address = mySocket.accept()# 用户连接携带的uid，判断是否和服务器相同data_dic = json.loads(connection.recv(1024).decode())uid = Noneif data_dic['type'] == UtilsAndConfig.CONNECTION_REQUEST:uid = int(data_dic['uid'])else:connection.send(UtilsAndConfig.CONNECTION_NOT_ALLOWED.encode())if uid in online_users.keys():# 可建立连接online_users[uid] = connectionconnection.send(UtilsAndConfig.CONNECTION_ALLOWED.encode())# 通知好友们，我上线了friends = get_friends_by_uid(uid)for f in friends:if f.id in online_users.keys():friend_connection = online_users[f.id]send_msg = {'type': UtilsAndConfig.FRIENDS_ONLINE_CHANGED, 'uid': uid, 'online': 1}friend_connection.send(json.dumps(send_msg).encode())# 创建子线程，保持通信keep_link_thread = threading.Thread(target=socket_keep_link_thread, args=(connection, ))keep_link_thread.setDaemon(True)keep_link_thread.start()else:connection.send(UtilsAndConfig.CONNECTION_NOT_ALLOWED.encode())def socket_keep_link_thread(connection):while True:try:msg = connection.recv(1024).decode()if not msg:if connection in online_users.values():uid = list(online_users.keys())[list(online_users.values()).index(connection)]online_users.pop(uid)friends = get_friends_by_uid(uid)for f in friends:if f.id in online_users.keys():friend_connection = online_users[f.id]send_msg = {'type': UtilsAndConfig.FRIENDS_ONLINE_CHANGED, 'uid': uid, 'online': 0}friend_connection.send(json.dumps(send_msg).encode())connection.close()returnelse:msg_json = json.loads(str(msg))# 发消息if msg_json['type'] == UtilsAndConfig.CHAT_SEND_MSG:to_id = msg_json['toId']is_friend = msg_json['isFriend']from_uid = msg_json['fromId']send_time = msg_json['sendTime']msg_text = msg_json['msgText']data = {'from_uid': from_uid, 'to_id': to_id, 'send_time': send_time, 'msg_text': msg_text,'is_friend': is_friend, 'type': '', 'msg_type': 'train'}# 通知接收方，收到新消息if is_friend == 1:if to_id in online_users.keys():friend_connection = online_users[to_id]data['type'] = UtilsAndConfig.CHAT_HAS_NEW_MSGfriend_connection.send(json.dumps(data).encode())# 通知发送方，发送成功data['type'] = UtilsAndConfig.CHAT_SEND_MSG_SUCCESSconnection.send(json.dumps(data).encode())else:# 通知发送方，发送失败，对方不在线data['type'] = UtilsAndConfig.CHAT_SEND_MSG_ERRconnection.send(json.dumps(data).encode())else:# 群members = get_group_members(to_id)members_online = Falsefor m in members:if m.uId in online_users.keys() and m.uId != from_uid:members_online = Truemember_connection = online_users[m.uId]data['type'] = UtilsAndConfig.CHAT_HAS_NEW_MSGmember_connection.send(json.dumps(data).encode())if members_online:# 通知发送方，发送成功data['type'] = UtilsAndConfig.CHAT_SEND_MSG_SUCCESSconnection.send(json.dumps(data).encode())else:# 通知发送方，发送失败，对方不在线data['type'] = UtilsAndConfig.CHAT_SEND_MSG_ERRconnection.send(json.dumps(data).encode())if msg_json['type'] == UtilsAndConfig.CHAT_SEND_FILE:from_id = msg_json['from_id']to_id = msg_json['to_id']is_friend = msg_json['is_friend']send_date = msg_json['send_date']file_length = msg_json['file_length']file_suffix = msg_json['file_suffix']file_name = msg_json['file_name']file_save_name = str(uuid.uuid1()) + '.' + file_suffixreturn_file_path = '/static/tmp/' + file_save_namefile_path = os.path.abspath(os.path.dirname(__file__)) + return_file_pathif not os.path.exists(os.path.dirname(file_path)):os.makedirs(os.path.dirname(file_path))data = {'from_uid': from_id, 'to_id': to_id, 'send_time': send_date, 'file_name': file_name,'is_friend': is_friend, 'type': UtilsAndConfig.CHAT_SEND_FILE_SUCCESS,'file_path': return_file_path}if is_friend == 1:if to_id not in online_users.keys():# 通知发送方，发送失败，对方不在线data['type'] = UtilsAndConfig.CHAT_SEND_MSG_ERRconnection.send(json.dumps(data).encode())continueelse:members = get_group_members(to_id)flag = Truefor m in members:if m.uId in online_users.keys() and m.uId != from_id:flag = Falsebreakif flag:# 通知发送方，发送失败，对方不在线data['type'] = UtilsAndConfig.CHAT_SEND_MSG_ERRconnection.send(json.dumps(data).encode())continue# 接收文件total_data = b''file_data = connection.recv(1024)total_data += file_datanum = len(file_data)while num < file_length:file_data = connection.recv(1024)num += len(file_data)total_data += file_datawith open(file_path, "wb") as f:f.write(total_data)connection.send(json.dumps(data).encode())# 通知接收方，收到新文件消息if is_friend == 1:friend_connection = online_users[to_id]data['type'] = UtilsAndConfig.CHAT_HAS_NEW_FILEfriend_connection.send(json.dumps(data).encode())else:members = get_group_members(to_id)for m in members:if m.uId in online_users.keys() and m.uId != from_id:member_connection = online_users[m.uId]data['type'] = UtilsAndConfig.CHAT_HAS_NEW_FILEmember_connection.send(json.dumps(data).encode())except ConnectionAbortedError:if connection in online_users.values():uid = list(online_users.keys())[list(online_users.values()).index(connection)]online_users.pop(uid)friends = get_friends_by_uid(uid)for f in friends:if f.id in online_users.keys():friend_connection = online_users[f.id]send_msg = {'type': UtilsAndConfig.FRIENDS_ONLINE_CHANGED, 'uid': uid, 'online': 0}friend_connection.send(json.dumps(send_msg).encode())connection.close()returnexcept ConnectionResetError:if connection in online_users.values():uid = list(online_users.keys())[list(online_users.values()).index(connection)]online_users.pop(uid)friends = get_friends_by_uid(uid)for f in friends:if f.id in online_users.keys():friend_connection = online_users[f.id]send_msg = {'type': UtilsAndConfig.FRIENDS_ONLINE_CHANGED, 'uid': uid, 'online': 0}friend_connection.send(json.dumps(send_msg).encode())connection.close()return# 主线程
if __name__ == '__main__':# 启动socket线程socketThread = threading.Thread(target=socket_listen_thread)socketThread.setDaemon(True)socketThread.start()# 启动Flask服务器app.run(host=serverConfig.SERVER_IP, port=serverConfig.HTTP_PORT, debug=False)

客户端主界面：ChatHome.py

与服务器保持Socket通信、与服务端进行http交互

class ChatHome:def run(self):pygame.mixer.init()# Socket连接self.socket.connect((self.server_config.SERVER_IP, self.server_config.SOCKET_PORT))send_data = {'type': UtilsAndConfig.CONNECTION_REQUEST, 'uid': self.uid}self.socket.send(json.dumps(send_data).encode())socket_result = self.socket.recv(1024).decode()if socket_result != UtilsAndConfig.CONNECTION_ALLOWED:tkinter.messagebox.showwarning('提示', '参数出错，socket连接被拒绝!')sys.exit()# 创建子线程保持socket通信keep_link_thread = threading.Thread(target=self.socket_keep_link_thread)keep_link_thread.setDaemon(True)keep_link_thread.start()# 基本信息self.root = tk.Tk()self.root.title('ChatRoom')self.root.geometry('320x510+100+0')# 用户名self.frame_user_info = Frame(self.root, relief=RAISED, width=320, borderwidth=0, height=70, bg='#4F7DA4')self.frame_user_info.place(x=0, y=0)self.init_user_info()# 中间画布canvasself.frame_mid = Frame(self.root, width=320, height=340)self.frame_mid.place(x=0, y=70)# # 画布中的frameself.init_friends_and_group_view()# 下方按钮frame_bottom_button = Frame(self.root, relief=RAISED, borderwidth=0, width=320, height=50)frame_bottom_button.place(x=0, y=420)button_bottom_add_friends = Button(frame_bottom_button, width=11,text='加好友/加群', command=self.open_add_friends)button_bottom_add_friends.place(x=55, y=10)button_bottom_create_groups = Button(frame_bottom_button, width=11,text='创建群', command=self.open_create_groups)button_bottom_create_groups.place(x=165, y=10)# 新消息frame_message = Frame(self.root, relief=RAISED, borderwidth=0, width=320, height=50)frame_message.place(x=0, y=460)self.label_message_tip = Label(frame_message)self.label_message_tip.place(x=55, y=12)self.refresh_message_count()button_message_open = Button(frame_message, width=7,text='查看', command=self.open_message_window)button_message_open.place(x=193, y=10)self.root.mainloop()# 保持socket通信def socket_keep_link_thread(self):while True:try:back_msg = self.socket.recv(1024).decode()msg = json.loads(back_msg)# 好友状态改变if msg['type'] == UtilsAndConfig.FRIENDS_ONLINE_CHANGED:self.frames_friend_view[msg['uid']].online_type_change(msg['online'])# 有新验证消息if msg['type'] == UtilsAndConfig.MESSAGE_NEW_MSG:self.refresh_message_count()self.play_new_msg_music()# 好友/群数量改变if msg['type'] == UtilsAndConfig.FRIENDS_GROUPS_COUNT_CHANGED:self.init_friends_and_group_view()self.refresh_message_count()# 有新文本消息， 写入缓存，更新显示if msg['type'] == UtilsAndConfig.CHAT_HAS_NEW_MSG:from_uid = msg['from_uid']to_id = msg['to_id']is_friend = msg['is_friend']txt = {'type': 'get', 'from_uid': from_uid, 'datetime': msg['send_time'],'msg': msg['msg_text'], 'msg_type': 'train'}UtilsAndConfig.add_one_chat_record(self.uid, is_friend, from_uid, to_id,json.dumps(txt, cls=UtilsAndConfig.MyJSONEncoder,ensure_ascii=False), False)# 是否打开聊天界面，打开则更新，未打开则好友列表提示新消息if self.window_chat_context is not None and self.window_chat_context.to_id == from_uid\and self.window_chat_context.is_friend == 1 and is_friend == 1:self.window_chat_context.get_new_msg()passelif self.window_chat_context is not None and self.window_chat_context.to_id == to_id\and self.window_chat_context.is_friend == 0 and is_friend == 0:self.window_chat_context.get_new_msg()else:if is_friend == 1:self.frames_friend_view[from_uid].new_msg_comming()else:self.frames_group_view[to_id].new_msg_comming()self.play_new_msg_music()# 发送文本消息成功， 写入本地缓存，更新显示if msg['type'] == UtilsAndConfig.CHAT_SEND_MSG_SUCCESS:from_uid = msg['from_uid']to_id = msg['to_id']send_time = msg['send_time']msg_text = msg['msg_text']is_friend = msg['is_friend']txt = {'type': 'send', 'datetime': send_time, 'msg': msg_text, 'msg_type': 'train'}UtilsAndConfig.add_one_chat_record(self.uid, is_friend, from_uid, to_id,json.dumps(txt, cls=UtilsAndConfig.MyJSONEncoder,ensure_ascii=False), True)self.window_chat_context.get_new_msg()# 发送文件成功if msg['type'] == UtilsAndConfig.CHAT_SEND_FILE_SUCCESS:to_id = msg['to_id']send_time = msg['send_time']file_name = msg['file_name']is_friend = msg['is_friend']txt = {'type': 'send', 'datetime': send_time, 'msg': file_name, 'msg_type': 'file'}UtilsAndConfig.add_one_chat_record(self.uid, is_friend, self.uid, to_id,json.dumps(txt, cls=UtilsAndConfig.MyJSONEncoder,ensure_ascii=False), True)self.window_chat_context.get_new_msg()self.window_chat_context.sending_file(False)# 收到文件if msg['type'] == UtilsAndConfig.CHAT_HAS_NEW_FILE:to_id = msg['to_id']from_uid = msg['from_uid']send_time = msg['send_time']file_name = msg['file_name']is_friend = msg['is_friend']file_path = msg['file_path']files_dir = os.path.abspath(os.path.dirname(__file__)) + '/static/LocalCache/' \+ str(self.uid) + '/files/'if not os.path.exists(os.path.dirname(files_dir)):os.makedirs(os.path.dirname(files_dir))all_file_name = file_name.split('/')[-1]file_suffix = all_file_name.split('.')[-1]end_index = len(all_file_name) - len(file_suffix) - 1file_name = all_file_name[0:end_index]file_save_path = files_dir + file_name + '.' + file_suffixi = 1while os.path.exists(file_save_path):file_save_path = files_dir + file_name + '（' + str(i) + '）' + '.' + file_suffixi += 1# http下载文件，保存到本地try:url = self.server_config.HTTP_SERVER_ADDRESS + file_pathres = requests.get(url)file_content = res.contentfile = open(file_save_path, 'wb')file.write(file_content)file.close()except requests.exceptions.InvalidSchema:pass# 服务器中文件不存在txt = {'type': 'get', 'from_uid': from_uid, 'datetime': send_time,'msg': file_save_path, 'msg_type': 'file'}UtilsAndConfig.add_one_chat_record(self.uid, is_friend, from_uid, to_id,json.dumps(txt, cls=UtilsAndConfig.MyJSONEncoder,ensure_ascii=False), False)if self.window_chat_context is not None and self.window_chat_context.to_id == from_uid\and self.window_chat_context.is_friend == 1 and is_friend == 1:self.window_chat_context.get_new_msg()passelif self.window_chat_context is not None and self.window_chat_context.to_id == to_id\and self.window_chat_context.is_friend == 0 and is_friend == 0:self.window_chat_context.get_new_msg()else:if is_friend == 1:self.frames_friend_view[from_uid].new_msg_comming()else:self.frames_group_view[to_id].new_msg_comming()self.play_new_msg_music()# 告诉服务器 文件下载完成，可删除url = self.server_config.HTTP_SERVER_ADDRESS + '/downloadFileSuccess?path=' + file_pathrequests.get(url)# 发送聊天消息失败，不写入缓存，提示对方已下线if msg['type'] == UtilsAndConfig.CHAT_SEND_MSG_ERR:tkinter.messagebox.showwarning('提示', '对方已下线，不能发送消息')# 服务器强制下线if msg['type'] == UtilsAndConfig.SYSTEM_LOGOUT:self.socket.close()tkinter.messagebox.showwarning('提示', '此账号已在别处登录!')self.root.destroy()returnexcept ConnectionAbortedError:tkinter.messagebox.showwarning('提示', '与服务器断开连接!')self.root.destroy()returnexcept ConnectionResetError:tkinter.messagebox.showwarning('提示', '与服务器断开连接!')self.root.destroy()return

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