python - pyqt多线程问题实在不是很明白。。求解。。

问题描述

from PyQt5 import QtCore, QtGui, QtWidgetsclass Ui_MainWindow(object): def setupUi(self, MainWindow):MainWindow.setObjectName('MainWindow')MainWindow.resize(382, 500)MainWindow.setMinimumSize(QtCore.QSize(382, 500))MainWindow.setMaximumSize(QtCore.QSize(382, 500))self.centralwidget = QtWidgets.QWidget(MainWindow)self.centralwidget.setObjectName('centralwidget')self.label = QtWidgets.QLabel(self.centralwidget)self.label.setGeometry(QtCore.QRect(30, 40, 18, 12))self.label.setObjectName('label')self.label_2 = QtWidgets.QLabel(self.centralwidget)self.label_2.setGeometry(QtCore.QRect(200, 30, 51, 31))self.label_2.setObjectName('label_2')self.label_3 = QtWidgets.QLabel(self.centralwidget)self.label_3.setGeometry(QtCore.QRect(20, 80, 30, 12))self.label_3.setObjectName('label_3')self.label_4 = QtWidgets.QLabel(self.centralwidget)self.label_4.setGeometry(QtCore.QRect(200, 70, 51, 31))self.label_4.setObjectName('label_4')self.pushButton = QtWidgets.QPushButton(self.centralwidget)self.pushButton.setGeometry(QtCore.QRect(290, 430, 71, 41))self.pushButton.setObjectName('pushButton')self.rz = QtWidgets.QTextEdit(self.centralwidget)self.rz.setGeometry(QtCore.QRect(10, 290, 200, 191))self.rz.setObjectName('rz')self.label_5 = QtWidgets.QLabel(self.centralwidget)self.label_5.setGeometry(QtCore.QRect(110, 120, 81, 31))self.label_5.setObjectName('label_5')self.label_6 = QtWidgets.QLabel(self.centralwidget)self.label_6.setGeometry(QtCore.QRect(110, 190, 81, 31))self.label_6.setObjectName('label_6')self.label_7 = QtWidgets.QLabel(self.centralwidget)self.label_7.setGeometry(QtCore.QRect(110, 240, 81, 31))self.label_7.setObjectName('label_7')self.groupBox = QtWidgets.QGroupBox(self.centralwidget)self.groupBox.setGeometry(QtCore.QRect(10, 110, 91, 161))self.groupBox.setObjectName('groupBox')self.xz = QtWidgets.QRadioButton(self.groupBox)self.xz.setGeometry(QtCore.QRect(10, 120, 89, 16))self.xz.setObjectName('xz')self.sc = QtWidgets.QRadioButton(self.groupBox)self.sc.setGeometry(QtCore.QRect(10, 70, 89, 16))self.sc.setObjectName('sc')self.zx = QtWidgets.QRadioButton(self.groupBox)self.zx.setGeometry(QtCore.QRect(10, 20, 89, 16))self.zx.setObjectName('zx')self.IP = QtWidgets.QLineEdit(self.centralwidget)self.IP.setGeometry(QtCore.QRect(60, 29, 131, 31))self.IP.setObjectName('IP')self.dk = QtWidgets.QLineEdit(self.centralwidget)self.dk.setGeometry(QtCore.QRect(230, 30, 61, 31))self.dk.setObjectName('dk')self.zh = QtWidgets.QLineEdit(self.centralwidget)self.zh.setGeometry(QtCore.QRect(60, 70, 131, 31))self.zh.setObjectName('zh')self.mm = QtWidgets.QLineEdit(self.centralwidget)self.mm.setGeometry(QtCore.QRect(230, 70, 131, 31))self.mm.setObjectName('mm')self.mm.setEchoMode(QtWidgets.QLineEdit.Password)self.ml = QtWidgets.QTextEdit(self.centralwidget)self.ml.setGeometry(QtCore.QRect(180, 120, 181, 61))self.ml.setObjectName('ml')self.bd = QtWidgets.QLineEdit(self.centralwidget)self.bd.setGeometry(QtCore.QRect(180, 190, 181, 31))self.bd.setObjectName('bd')self.yc = QtWidgets.QLineEdit(self.centralwidget)self.yc.setGeometry(QtCore.QRect(180, 240, 181, 31))self.label_8 = QtWidgets.QLabel(self.centralwidget)self.label_8.setGeometry(QtCore.QRect(280, 380, 81, 21))self.label_8.setStyleSheet('color: rgb(255, 0, 0);')self.label_8.setObjectName('label_8')self.yc.setObjectName('yc')self.zx.setChecked(True)self.dk.setText('22')self.zh.setText('root')self.bd.setEnabled(False)self.yc.setEnabled(False)MainWindow.setCentralWidget(self.centralwidget)self.retranslateUi(MainWindow)self.zx.clicked.connect(self.zxml)self.sc.clicked.connect(self.sx)self.xz.clicked.connect(self.sx)self.pushButton.clicked.connect(self.linux)QtCore.QMetaObject.connectSlotsByName(MainWindow) def zxml(self):self.bd.setEnabled(False)self.yc.setEnabled(False)self.ml.setEnabled(True) def sx(self):self.bd.setEnabled(True)self.yc.setEnabled(True)self.ml.setEnabled(False) def linux(self):import osimport sysaa=os.path.split(os.path.realpath(sys.argv[0]))self.rz.setText('')dk=int(self.dk.text())zh=self.zh.text()mm=self.mm.text()ml=self.ml.toPlainText()if os.path.exists(aa[0]+'/log.txt'): os.remove(aa[0]+'/log.txt')if self.mm.text()=='' and self.IP.text()=='': self.label_8.setText('密码不能为空！')elif self.IP.text()=='': self.label_8.setText('IP不能为空！')else: a = self.IP.text() self.label_8.setText('') def hanshu(b):import paramiko #paramiko.util.log_to_file('c:/paramiko.log') ssh = paramiko.SSHClient() ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())try: ssh.connect(b, dk, zh, mm,timeout=3) QApplication.processEvents() if self.zx.isChecked()==True:stdin, stdout, stderr = ssh.exec_command(ml)#执行命令行self.rz.setText(self.rz.toPlainText()+b+'执行成功'+'n')###多线程时这条执行不了，报错。。print('a')with open(aa[0]+'/log.txt', ’a’) as f: f.write(stdout.read().decode(’utf-8’)+'n')ssh.close() elif self.sc.isChecked()==True:ftp = ssh.open_sftp() ftp.put(self.bd.text(),self.yc.text())#上传文件self.rz.setText(self.rz.toPlainText()+b+'执行成功'+'n')###多线程时这条执行不了，报错。。with open(aa[0]+'/log.txt', ’a’) as f: f.write('执行成功n')ftp.close() ssh.close() elif self.xz.isChecked()==True:ftp = ssh.open_sftp() ftp.get(self.yc.text(),self.bd.text())#下载文件self.rz.setText(self.rz.toPlainText()+b+'执行成功'+'n')###多线程时这条执行不了，报错。。with open(aa[0]+'/log.txt', ’a’) as f: f.write('执行成功n')ftp.close() ssh.close()except: print (b+'无法连接'+'n') self.rz.setText(self.rz.toPlainText()+b+'无法连接'+'n')###多线程时这条执行不了，报错。。 with open(aa[0]+'/log.txt', ’a’) as f:f.write(b+'无法连接'+'n'+'n') sz=[] for ip in a.split(’,’):if ’-’ in ip: s1, s2 = ip.rsplit(’.’, 1) start, end = map(int, s2.split(’-’)) for num in range(start, end+1):r=s1+’.’+str(num)sz.append(r)#aa=threading.Thread(target=hanshu,args=(b,))#aa.start()#hanshu(b)else: sz.append(r) #hanshu(ip) import threading for b in sz:print(b)t=threading.Thread(target=hanshu,args=(b,))t.start() def retranslateUi(self, MainWindow):_translate = QtCore.QCoreApplication.translateMainWindow.setWindowTitle(_translate('MainWindow', 'Linux管理工具'))self.label.setText(_translate('MainWindow', 'IP:'))self.label_2.setText(_translate('MainWindow', '端口:'))self.label_3.setText(_translate('MainWindow', '账号:'))self.label_4.setText(_translate('MainWindow', '密码:'))self.pushButton.setText(_translate('MainWindow', '执行'))self.label_5.setText(_translate('MainWindow', '输入命令:'))self.label_6.setText(_translate('MainWindow', '本地路径:'))self.label_7.setText(_translate('MainWindow', '远程路径:'))self.groupBox.setTitle(_translate('MainWindow', '操作:'))self.xz.setText(_translate('MainWindow', '下载文件'))self.sc.setText(_translate('MainWindow', '上传文件'))self.zx.setText(_translate('MainWindow', '执行命令'))from PyQt5.QtWidgets import QApplication , QMainWindowimport sysif __name__ == ’__main__’: app = QApplication(sys.argv) mainWindow = QMainWindow() ui = Ui_MainWindow() ui.setupUi(mainWindow) mainWindow.show() sys.exit(app.exec_())

错误信息如下：`QObject: Cannot create children for a parent that is in a different thread.(Parent is QTextDocument(0x27e4150), parent’s thread is QThread(0xc306a0), current thread is QThread(0xc0eca0)`

求大神帮修改一下多线程或者指证一下，只想让他把日志输出到文本框中。。。

问题解答

def hanshu(b)这里面不对吧，在这里面可以引用self.xxx吗？你得以这样的形式传值进来，def hanshu(xx,yy,b)然后再试试，用的时候就是hanshu(self.xx,self.yy,b),明白我的意思吗？

提示很清楚非GUI线程操作GUI线程的元素了这个在QT里是非线程安全的你要想非GUI线程操作GUI线程，应该用signal slot