本文在上文的基礎(chǔ)上重新實(shí)現(xiàn)支持多線程的服務(wù)器。

以下為T(mén)CP客戶端的程序代碼：

#!/usr/bin/env python3

import sys

from PyQt5.QtCore import (QByteArray, QDataStream, QDate, QIODevice,

QRegExp, Qt)

from PyQt5.QtWidgets import (QApplication, QDateEdit, QFrame, QGridLayout,

QHBoxLayout, QLabel, QLineEdit, QPushButton,

QWidget)

from PyQt5.QtGui import QRegExpValidator

from PyQt5.QtNetwork import (QTcpSocket,)

MAC = True

try:

from PyQt5.QtGui import qt_mac_set_native_menubar

except ImportError:

MAC = False

PORT = 9407

SIZEOF_UINT16 = 2

class BuildingServicesClient(QWidget):

def __init__(self, parent=None):

super(BuildingServicesClient, self).__init__(parent)

self.socket = QTcpSocket()

self.nextBlockSize = 0

self.request = None

roomLabel = QLabel("&Room")

self.roomEdit = QLineEdit()

roomLabel.setBuddy(self.roomEdit)

regex = QRegExp(r"[0-9](?:0[1-9]|[12][0-9]|3[0-4])")

self.roomEdit.setValidator(QRegExpValidator(regex, self))

self.roomEdit.setAlignment(Qt.AlignRight|Qt.AlignVCenter)

dateLabel = QLabel("&Date")

self.dateEdit = QDateEdit()

dateLabel.setBuddy(self.dateEdit)

self.dateEdit.setAlignment(Qt.AlignRight|Qt.AlignVCenter)

self.dateEdit.setDate(QDate.currentDate().addDays(1))

self.dateEdit.setDisplayFormat("yyyy-MM-dd")

responseLabel = QLabel("Response")

self.responseLabel = QLabel()

self.responseLabel.setFrameStyle(QFrame.StyledPanel|QFrame.Sunken)

self.bookButton = QPushButton("&Book")

self.bookButton.setEnabled(False)

self.unBookButton = QPushButton("&Unbook")

self.unBookButton.setEnabled(False)

quitButton = QPushButton("&Quit")

if not MAC:

self.bookButton.setFocusPolicy(Qt.NoFocus)

self.unBookButton.setFocusPolicy(Qt.NoFocus)

buttonLayout = QHBoxLayout()

buttonLayout.addWidget(self.bookButton)

buttonLayout.addWidget(self.unBookButton)

buttonLayout.addStretch()

buttonLayout.addWidget(quitButton)

layout = QGridLayout()

layout.addWidget(roomLabel, 0, 0)

layout.addWidget(self.roomEdit, 0, 1)

layout.addWidget(dateLabel, 0, 2)

layout.addWidget(self.dateEdit, 0, 3)

layout.addWidget(responseLabel, 1, 0)

layout.addWidget(self.responseLabel, 1, 1, 1, 3)

layout.addLayout(buttonLayout, 2, 1, 1, 4)

self.setLayout(layout)

self.socket.connected.connect(self.sendRequest)

self.socket.readyRead.connect(self.readResponse)

self.socket.disconnected.connect(self.serverHasStopped)

#self.connect(self.socket,

# SIGNAL("error(QAbstractSocket::SocketError)"),

# self.serverHasError)

self.socket.error.connect(self.serverHasError)

self.roomEdit.textEdited.connect(self.updateUi)

self.dateEdit.dateChanged.connect(self.updateUi)

self.bookButton.clicked.connect(self.book)

self.unBookButton.clicked.connect(self.unBook)

quitButton.clicked.connect(self.close)

self.setWindowTitle("Building Services")

def updateUi(self):

enabled = False

if (self.roomEdit.text() and

self.dateEdit.date() > QDate.currentDate()):

enabled = True

if self.request is not None:

enabled = False

self.bookButton.setEnabled(enabled)

self.unBookButton.setEnabled(enabled)

def closeEvent(self, event):

self.socket.close()

event.accept()

def book(self):

self.issueRequest("BOOK", self.roomEdit.text(),

self.dateEdit.date())

def unBook(self):

self.issueRequest("UNBOOK", self.roomEdit.text(),

self.dateEdit.date())

def issueRequest(self, action, room, date):

self.request = QByteArray()

stream = QDataStream(self.request, QIODevice.WriteOnly)

stream.setVersion(QDataStream.Qt_5_7)

stream.writeUInt16(0)

stream.writeQString(action)

stream.writeQString(room)

stream << date

stream.device().seek(0)

stream.writeUInt16(self.request.size() - SIZEOF_UINT16)#overwrite seek(0)

self.updateUi()

if self.socket.isOpen():

self.socket.close()

self.responseLabel.setText("Connecting to server...")

self.socket.connectToHost("localhost", PORT)

def sendRequest(self):

self.responseLabel.setText("Sending request...")

self.nextBlockSize = 0

self.socket.write(self.request)

self.request = None

def readResponse(self):

stream = QDataStream(self.socket)

stream.setVersion(QDataStream.Qt_5_7)

while True:

if self.nextBlockSize == 0:

if self.socket.bytesAvailable() < SIZEOF_UINT16:

break

self.nextBlockSize = stream.readUInt16()

if self.socket.bytesAvailable() < self.nextBlockSize:

break

action = ""

room = ""

date = QDate()

#stream >> action >> room

action=stream.readQString()

room=stream.readQString()

if action != "ERROR":

stream >> date

if action == "ERROR":

msg = "Error: {0}".format(room)

elif action == "BOOK":

msg = "Booked room {0} for {1}".format(room,date.toString(Qt.ISODate))

elif action == "UNBOOK":

msg = "Unbooked room {0} for {1}".format(room,date.toString(Qt.ISODate))

self.responseLabel.setText(msg)

self.updateUi()

self.nextBlockSize = 0

def serverHasStopped(self):

self.responseLabel.setText(

"Error: Connection closed by server")

self.socket.close()

def serverHasError(self, error):

self.responseLabel.setText("Error: {0}".format(self.socket.errorString()))

self.socket.close()

app = QApplication(sys.argv)

form = BuildingServicesClient()

form.show()

app.exec_()

以下為T(mén)CP服務(wù)端的程序代碼：

#!/usr/bin/env python3

import bisect

import collections

import sys

from PyQt5.QtCore import (QByteArray, QDataStream, QDate, QReadWriteLock, QThread,QIODevice, Qt)

from PyQt5.QtWidgets import (QApplication, QMessageBox, QPushButton)

from PyQt5.QtNetwork import (QAbstractSocket,QHostAddress, QTcpServer, QTcpSocket)

PORT = 9407

SIZEOF_UINT16 = 2

MAX_BOOKINGS_PER_DAY = 5

# Key = date, value = list of room IDs

Bookings = collections.defaultdict(list)

def printBookings():

for key in sorted(Bookings):

print(key, Bookings[key])

print()

class Thread(QThread):

lock = QReadWriteLock()

def __init__(self, socketId, parent):

super(Thread, self).__init__(parent)

self.socketId = socketId

def run(self):

socket = QTcpSocket()

if not socket.setSocketDescriptor(self.socketId):

#self.emit(SIGNAL("error(int)"), socket.error())

self.error.connect(socket.error)

return

while socket.state() == QAbstractSocket.ConnectedState:

nextBlockSize = 0

stream = QDataStream(socket)

stream.setVersion(QDataStream.Qt_5_7)

if (socket.waitForReadyRead() and

socket.bytesAvailable() >= SIZEOF_UINT16):

nextBlockSize = stream.readUInt16()

else:

self.sendError(socket, "Cannot read client request")

return

if socket.bytesAvailable() < nextBlockSize:

if (not socket.waitForReadyRead(60000) or

socket.bytesAvailable() < nextBlockSize):

self.sendError(socket, "Cannot read client data")

return

action = ""

room = ""

date = QDate()

action=stream.readQString()

if action in ("BOOK", "UNBOOK"):

room=stream.readQString()

stream >> date

try:

Thread.lock.lockForRead()

bookings = Bookings.get(date.toPyDate())

finally:

Thread.lock.unlock()

uroom = str(room)

if action == "BOOK":

newlist = False

try:

Thread.lock.lockForRead()

if bookings is None:

newlist = True

finally:

Thread.lock.unlock()

if newlist:

try:

Thread.lock.lockForWrite()

bookings = Bookings[date.toPyDate()]

finally:

Thread.lock.unlock()

error = None

insert = False

try:

Thread.lock.lockForRead()

if len(bookings) < MAX_BOOKINGS_PER_DAY:

if uroom in bookings:

error = "Cannot accept duplicate booking"

else:

insert = True

else:

error = "{0} is fully booked".format(date.toString(Qt.ISODate))

finally:

Thread.lock.unlock()

if insert:

try:

Thread.lock.lockForWrite()

bisect.insort(bookings, uroom)

finally:

Thread.lock.unlock()

self.sendReply(socket, action, room, date)

else:

self.sendError(socket, error)

elif action == "UNBOOK":

error = None

remove = False

try:

Thread.lock.lockForRead()

if bookings is None or uroom not in bookings:

error = "Cannot unbook nonexistent booking"

else:

remove = True

finally:

Thread.lock.unlock()

if remove:

try:

Thread.lock.lockForWrite()

bookings.remove(uroom)

finally:

Thread.lock.unlock()

self.sendReply(socket, action, room, date)

else:

self.sendError(socket, error)

else:

self.sendError(socket, "Unrecognized request")

socket.waitForDisconnected()

try:

Thread.lock.lockForRead()

printBookings()

finally:

Thread.lock.unlock()

def sendError(self, socket, msg):

reply = QByteArray()

stream = QDataStream(reply, QIODevice.WriteOnly)

stream.setVersion(QDataStream.Qt_5_7)

stream.writeUInt16(0)

stream.writeQString("ERROR")

stream.writeQString(msg)

stream.device().seek(0)

stream.writeUInt16(reply.size() - SIZEOF_UINT16)

socket.write(reply)

def sendReply(self, socket, action, room, date):

reply = QByteArray()

stream = QDataStream(reply, QIODevice.WriteOnly)

stream.setVersion(QDataStream.Qt_5_7)

stream.writeUInt16(0)

stream.writeQString(action)

stream.writeQString(room)

stream<

stream.device().seek(0)

stream.writeUInt16(reply.size() - SIZEOF_UINT16)

socket.write(reply)

class TcpServer(QTcpServer):

def __init__(self, parent=None):

super(TcpServer, self).__init__(parent)

def incomingConnection(self, socketId):

thread = Thread(socketId, self)

#self.connect(thread, SIGNAL("finished()"),

# thread, SLOT("deleteLater()"))

thread.finished.connect(thread.deleteLater)

thread.start()

class BuildingServicesDlg(QPushButton):

def __init__(self, parent=None):

super(BuildingServicesDlg, self).__init__(

"&Close Server", parent)

self.setWindowFlags(Qt.WindowStaysOnTopHint)

self.loadBookings()

self.tcpServer = TcpServer(self)

if not self.tcpServer.listen(QHostAddress("0.0.0.0"), PORT):

QMessageBox.critical(self, "Building Services Server","Failed to start server: {0}".format(self.tcpServer.errorString()))

self.close()

return

self.clicked.connect(self.close)

font = self.font()

font.setPointSize(24)

self.setFont(font)

self.setWindowTitle("Building Services Server")

def loadBookings(self):

# Generate fake data

import random

today = QDate.currentDate()

for i in range(10):

date = today.addDays(random.randint(7, 60))

for j in range(random.randint(1, MAX_BOOKINGS_PER_DAY)):

# Rooms are 001..534 excl. 100, 200, ..., 500

floor = random.randint(0, 5)

room = random.randint(1, 34)

bookings = Bookings[date.toPyDate()]

if len(bookings) >= MAX_BOOKINGS_PER_DAY:

continue

bisect.insort(bookings, "{0:1d}{1:02d}".format(

floor, room))

printBookings()

app = QApplication(sys.argv)

form = BuildingServicesDlg()

form.show()

form.move(0, 0)

app.exec_()

以上這篇python3+PyQt5 創(chuàng)建多線程網(wǎng)絡(luò)應(yīng)用-TCP客戶端和TCP服務(wù)器實(shí)例就是小編分享給大家的全部?jī)?nèi)容了，希望能給大家一個(gè)參考，也希望大家多多支持腳本之家。

總結(jié)

以上是生活随笔為你收集整理的python服务器qt客户端_python3+PyQt5 创建多线程网络应用-TCP客户端和TCP服务器实例...的全部?jī)?nèi)容，希望文章能夠幫你解決所遇到的問(wèn)題。

如果覺(jué)得生活随笔網(wǎng)站內(nèi)容還不錯(cuò)，歡迎將生活随笔推薦給好友。