python互联网程序设计GUI程序设计和网络程序设计(人机互动聊天软件)

news2024/11/14 8:48:31

1．项目意义

1、了解网络的结构；
2、了解网络传输协议；
3、掌握基本的网络编程方法。

2．总体设计

使用 TCP 协议实现人机聊天互动，程序具有服务端和客户端：

（1）必备功能：要求服务端代码具有一定的智能，能够根据不完整的问题识别客户端真正要问的问题。如客户输入how old, 服务器能回答年龄。

（2）必备功能：服务器客户端之间能简单发送和接收文件。至少应有序列化和反序列化功能。收发双方，应打印显示发送或接收的原始对象的信息（非字节串）。

3．程序描述

1、TCP客户端：
（1）发送信息的函数

def SendMessage():
	mySocket.sendall("111-111".encode())
	sendLines = SendInput.get("0.0", END)
	mySocket.sendall(sendLines.encode())
	ShowInput.insert(END,"\t\t\t"+sendLines[:-1]+" :(Client)\n")
	ShowInput.insert(END,"(Server):"+mySocket.recv(BUFSIZE).decode()+"\n")
SendInput.delete("0.0", END)

（2）发送文件的函数

def SendFile():
	mySocket.sendall("222-222".encode())
	filename = askopenfilename()
	#ShowInput.insert(END, filename+ s +"  SendFile \n")
	#建立socket
	file_size=os.path.getsize(filename)
	fhead = struct.pack('l',file_size)
	mySocket.sendall(fhead)
	fp=open(filename,'rb')
	while True:      
	    data=fp.read(BUFSIZE)
	    if not data:
	        break
	    mySocket.sendall(data)
	fp.close()
	ShowInput.insert(END, "filename: "+filename+" :(Client)\n")
	ShowInput.insert(END, "\t\t\t\tsend over"+" :(Client)\n")

（3）界面部分

frame = Frame(RootWindow, bg = 'Tan',)
frame1 = Frame(RootWindow, bg = 'Tan',)

ShowInput = Text(RootWindow, width = 200, 
							height = 7, 
							bg = 'Tan', 
							fg = 'linen',
							font = ('微软雅黑',10))
SendInput = Text(RootWindow, width = 200, 
							height = 4, 
							bg = 'Tan', 
							fg = 'linen',
							font = ('微软雅黑',10))
MessageLabel = Label(frame, text = "收发信息框：",
							bg = 'Tan',
  							fg = 'linen',
  							font = ('微软雅黑',8))

InputLabel = Label(frame1, text = "输入框：",
							bg = 'Tan',
  							fg = 'linen',
  							font = ('微软雅黑',8))

blankLabel = Label(RootWindow)

ChatBtn = Button(RootWindow, text = "聊天", 
							width = 7, 
							relief = RIDGE,
  							bg = 'Tan',
  							fg = 'linen',
  							font = ('微软雅黑',11),
							command = SendMessage)

FielBtn = Button(RootWindow, text = "发送文件",
							width = 7, 
							relief = RIDGE,
  							bg = 'Tan',
  							fg = 'linen',
  							font = ('微软雅黑',11),
							command = SendFile)

menubtn = Menubutton(RootWindow,text = '快速对话', 
								width = 7, 
								relief = RIDGE,
  								bg = 'Tan',
  								fg = 'linen',
  								font = ('微软雅黑',11))

menu = Menu(menubtn, tearoff = True)

for word in words:
	menu.add_radiobutton(label = word, command = lambda word_name = word : InsertLines(word_name))
menubtn.config(menu = menu)

（4）界面布局部分

frame.pack(side = 'top', padx = 10, pady = 0,fill = BOTH)
MessageLabel.pack(side = 'left', padx = 0, pady = 0)

ShowInput.pack(side = 'top', padx = 10, pady = 0)
blankLabel.pack(side = 'top', padx = 10, pady = 0)

frame1.pack(side = 'top', padx = 10, pady = 0,fill = BOTH)
InputLabel.pack(side = 'left', padx = 0, pady = 0)

SendInput.pack(side = 'top', padx = 10, pady = 0)
ChatBtn.pack(side = 'right', padx = 10, pady = 6)
FielBtn.pack(side = 'right', padx = 10, pady = 6)
menubtn.pack(side = 'right', padx = 10, pady = 6)

2、TCP服务端
（1）接收信息

if data == "111-111":
        #处理分析发送函数请求
        print("receive message!")
        messageFalg = True

    if messageFalg:
        if data != "111-111":
            print('Received message:', data[0:-1])

            #字符匹配
            mydata = ''
            for item in words.keys():
                if item.find(data[0:-1]) != -1:
                    mydata = item
                    break
            
            conn.sendall(words.get(mydata,"Sorry, I dont' know!").encode())
            messageFalg = False

（2）接收文件

if data == "222-222":
        print("receive file!")
        fileFlag = True
        
    if fileFlag:
        data = conn.recv(BUFSIZE)
        f_info=struct.unpack('l',data) 
        file_size=f_info[0]    
        recv_size=0

        while not recv_size==file_size:
            with open('ClientFile_'+str(filenuber)+'.dat','ab') as fp:  
                if file_size - recv_size > BUFSIZE:
                    data = conn.recv(BUFSIZE)              
                    recv_size += len(data)
                else:
                    data= conn.recv(file_size - recv_size) 
                    recv_size = file_size
                print(data)
                fp.write(data)
        filenuber = filenuber + 1
        print('received a file :' + 'ClientFile'+str(filenuber)+'.dat')
        fileFlag = False