def readMessage(self): """ 读取文件数据 """ receiver = QDataStream(self.tcpClient) receiver.setVersion(QDataStream.Qt_5_4) if self.bytesReceive <= 2: if self.tcpClient.bytesAvailable() >= 2 and self.fileNameSize == 0: self.TotalBytes = receiver.readInt64() self.fileNameSize = receiver.readInt64() self.bytesReceive += 2 if self.tcpClient.bytesAvailable() >= self.fileNameSize and self.fileNameSize != 0: self.fileName = receiver.readQString() self.bytesReceive += self.fileNameSize if not(self.localFile.open(QFile.WriteOnly)): QMessageBox.warning(self, "应用程序", "无法读取文件 {}:\n {}".format(self.fileName, self.localFile.errorString())) return else: return if self.bytesReceive < self.TotalBytes: self.bytesReceive += self.tcpClient.bytesAvailable() inBlock = self.tcpClient.readAll() self.localFile.write(inBlock) inBlock.resize(0) useTime = self.time.elapsed() / 1000 bytesReceived = self.bytesReceive / (1024*1024) speed = bytesReceived / useTime total = self.TotalBytes / (1024*1024) left = (total - bytesReceived) / speed if bytesReceived < 0.01: bytesReceived = self.bytesReceive / 1024 speed = bytesReceived / useTime / 1024 total = self.TotalBytes / 1024 if left > 0: msg = "已接收 {0:.2f} KB ({1:.2f}KB/s)\n共{2:.2f}KB.已用时:{3:.1f}秒\n估计剩余时间:{4:.1f}秒".format(bytesReceived, speed, total, useTime, left) else: msg = "已接收 {0:.2f} KB ({1:.2f}KB/s)\n共{2:.2f}KB.已用时:{3:.1f}秒\n".format(bytesReceived, speed, total, useTime) else: if left > 0: msg = "已接收 {0:.2f} MB ({1:.2f}MB/s)\n共{2:.2f}MB.已用时:{3:.1f}秒\n估计剩余时间:{4:.1f}秒".format(bytesReceived, speed, total, useTime, left) else: msg = "已接收 {0:.2f} MB ({1:.2f}MB/s)\n共{2:.2f}MB.已用时:{3:.1f}秒\n".format(bytesReceived, speed, total, useTime) self.progressBar.setMaximum(total) self.progressBar.setValue(bytesReceived) self.tcpClientStatuslabel.setText(msg) if self.bytesReceive == self.TotalBytes: self.localFile.close() self.tcpClient.close() self.tcpClientStatuslabel.setText("接收文件{}完毕".format(self.fileName)) self.tcpClientBtn.setEnabled(False)
def readMessage(self): # print('server read message',self.tcpSocket.bytesAvailable()) stream = QDataStream(self) #发送数据是以QByteArray数据类型发送过来的,所以接收数据也应该以此接收 stream.setVersion(QDataStream.Qt_5_4) #发送和接收数据以相同的编码形式传输 while self.bytesAvailable() > SIZEOF_HEAD_INT: if self.headSize == 0: self.headSize = stream.readInt64() self.fileBytes = stream.readInt64() if self.bytesAvailable() >= self.headSize + self.fileBytes: qheader = stream.readQString() # print("server recv head:",self.headSize,qheader) # if self.bytesReceive >= self.headSize+self.fileBytes+SIZEOF_HEAD_INT: qfilecont = stream.readRawData(self.fileBytes) # if self.fileBytes > 0: # qfilecont="" # self.bytesReceive += self.fileBytes # self.handlerMessage(qheader,qfilecont,self.fileBytes) ipaddr = self.peerAddress().toString() + ":" + str( self.peerPort()) self.handlerMessage(qheader, qfilecont, self.fileBytes) # self.signRecv.emit(ipaddr,qheader,qfilecont) self.initRecv() else: break
def readMessage(self): stream = QDataStream(self.tcpSocket) stream.setVersion(QDataStream.Qt_5_4) while self.tcpSocket.bytesAvailable() > SIZEOF_HEAD_INT: if self.headSize == 0: self.headSize = stream.readInt64() # fileBytes=stream.readInt64() # self.bytesReceive+=SIZEOF_HEAD_INT if self.tcpSocket.bytesAvailable() >= self.headSize: qheader = stream.readQString() # print("client recv head:",qheader) # self.bytesReceive += self.headSize self.handlerMessage(qheader) self.initRecv() else: break
class QmyMainWindow(QMainWindow): def __init__(self, parent=None): super().__init__(parent) #调用父类构造函数,创建窗体 self.ui=Ui_MainWindow() #创建UI对象 self.ui.setupUi(self) #构造UI界面 self.ui.groupBox.setEnabled(False) self.ui.actSaveALL.setEnabled(False) self.ui.actReadALL.setEnabled(False) self.setWindowTitle("二进制文件流化读写") self.__testFileName="" #测试用文件的文件名 ## ==============自定义功能函数============ def __iniWrite(self): ##初始化写文件操作 self.fileDevice=QFile(self.__testFileName) #创建文件对象 if not self.fileDevice.open(QIODevice.WriteOnly): del self.fileDevice #删除对象 return False self.fileStream=QDataStream(self.fileDevice) #流对象 self.fileStream.setVersion(QDataStream.Qt_5_12) #设置版本号,写入和读取的版本号要兼容 if self.ui.radio_BigEndian.isChecked(): self.fileStream.setByteOrder(QDataStream.BigEndian) else: self.fileStream.setByteOrder(QDataStream.LittleEndian) ##必须要设置精度,float和double都按照这个精度 precision=QDataStream.DoublePrecision if self.ui.radio_Single.isChecked(): precision=QDataStream.SinglePrecision self.fileStream.setFloatingPointPrecision(precision) return True def __delFileStream(self): ##结束写文件操作 self.fileDevice.close() del self.fileStream del self.fileDevice def __iniRead(self): ##开始读文件操作 if not QFile.exists(self.__testFileName): QMessageBox.critical(self,"错误","文件不存在") return False self.fileDevice=QFile(self.__testFileName) #创建文件对象 if not self.fileDevice.open(QIODevice.ReadOnly): del self.fileDevice #删除对象 return False self.fileStream=QDataStream(self.fileDevice) self.fileStream.setVersion(QDataStream.Qt_5_12) #设置流版本号,写入和读取的版本号要兼容 if self.ui.radio_BigEndian.isChecked(): self.fileStream.setByteOrder(QDataStream.BigEndian) else: self.fileStream.setByteOrder(QDataStream.LittleEndian) ##必须要设置精度,float和double都按照这个精度 precision=QDataStream.DoublePrecision if self.ui.radio_Single.isChecked(): precision=QDataStream.SinglePrecision self.fileStream.setFloatingPointPrecision(precision) return True ## ==========由connectSlotsByName() 自动连接的槽函数================== @pyqtSlot() ##选择测试用文件 def on_btnFile_clicked(self): curPath=QDir.currentPath() #当前目录 title="选择文件" #对话框标题 filt="流数据文件(*.stream)" #文件过滤器 fileName,flt=QFileDialog.getSaveFileName(self,title,curPath,filt) if (fileName == ""): return self.__testFileName=fileName #测试用文件 self.ui.editFilename.setText(fileName) self.ui.groupBox.setEnabled(True) self.ui.actSaveALL.setEnabled(True) self.ui.actReadALL.setEnabled(True) @pyqtSlot() ##写 int8 def on_btnInt8_Write_clicked(self): Value=self.ui.spin_Int8.value() #Python int if self.__iniWrite(): try: self.fileStream.writeInt8(Value) except Exception as e: QMessageBox.critical(self, "writeInt8()出现错误", str(e)) finally: self.__delFileStream() @pyqtSlot() ##读 int8 def on_btnInt8_Read_clicked(self): if self.__iniRead(): Value=self.fileStream.readInt8() self.ui.edit_Int8.setText("%d"%Value) self.__delFileStream() @pyqtSlot() ##写 uint8 def on_btnUInt8_Write_clicked(self): Value=self.ui.spin_UInt8.value() if self.__iniWrite(): try: self.fileStream.writeUInt8(Value) except Exception as e: QMessageBox.critical(self, "writeUInt8()出现错误", str(e)) finally: self.__delFileStream() @pyqtSlot() ##读 uint8 def on_btnUInt8_Read_clicked(self): if self.__iniRead(): Value=self.fileStream.readUInt8() self.ui.edit_UInt8.setText("%d"%Value) self.__delFileStream() @pyqtSlot() ##写int16 def on_btnInt16_Write_clicked(self): Value=self.ui.spin_Int16.value() #Python的int if self.__iniWrite(): try: self.fileStream.writeInt16(Value) #以int16类型写入文件 except Exception as e: QMessageBox.critical(self, "writeInt16()发生错误", str(e)) finally: self.__delFileStream() ## print("finally被执行") @pyqtSlot() ##读 int16 def on_btnInt16_Read_clicked(self): if self.__iniRead(): try: Value=self.fileStream.readInt16() self.ui.edit_Int16.setText("%d"%Value) except Exception as e: QMessageBox.critical(self, "readInt16()发生错误", str(e)) finally: self.__delFileStream() ## print("finally被执行") @pyqtSlot() ##写 uint16 def on_btnUInt16_Write_clicked(self): Value=self.ui.spin_UInt16.value() if self.__iniWrite(): try: self.fileStream.writeUInt16(Value) except Exception as e: QMessageBox.critical(self, "writeUInt16()发生错误", str(e)) finally: self.__delFileStream() @pyqtSlot() ##读 uint16 def on_btnUIn16_Read_clicked(self): if self.__iniRead(): Value=self.fileStream.readUInt16() self.ui.edit_UInt16.setText("%d"%Value) self.__delFileStream() @pyqtSlot() ##写 int32 def on_btnInt32_Write_clicked(self): Value=self.ui.spin_Int32.value() if self.__iniWrite(): try: self.fileStream.writeInt32(Value) except Exception as e: QMessageBox.critical(self, "writeInt32()发生错误", str(e)) finally: self.__delFileStream() @pyqtSlot() ##读 int32 def on_btnInt32_Read_clicked(self): if self.__iniRead(): Value=self.fileStream.readInt32() self.ui.edit_Int32.setText("%d"%Value) self.__delFileStream() @pyqtSlot() ##写 int64 def on_btnInt64_Write_clicked(self): Value=self.ui.spin_Int64.value() if self.__iniWrite(): try: self.fileStream.writeInt64(Value) except Exception as e: QMessageBox.critical(self, "writeInt64()发生错误", str(e)) finally: self.__delFileStream() @pyqtSlot() ##读 int64 def on_btnInt64_Read_clicked(self): if self.__iniRead(): Value=self.fileStream.readInt64() self.ui.edit_Int64.setText("%d"%Value) self.__delFileStream() @pyqtSlot() ##写 int def on_btnInt_Write_clicked(self): Value=self.ui.spin_Int.value() if self.__iniWrite(): try: self.fileStream.writeInt(Value) except Exception as e: QMessageBox.critical(self, "writeInt()发生错误", str(e)) finally: self.__delFileStream() @pyqtSlot() ##读 int def on_btnInt_Read_clicked(self): if self.__iniRead(): Value=self.fileStream.readInt() self.ui.edit_Int.setText("%d"%Value) self.__delFileStream() @pyqtSlot() ##写 bool def on_btnBool_Write_clicked(self): Value=self.ui.chkBox_In.isChecked() #bool型 if self.__iniWrite(): self.fileStream.writeBool(Value) self.__delFileStream() @pyqtSlot() ##读 bool def on_btnBool_Read_clicked(self): if self.__iniRead(): Value=self.fileStream.readBool() #bool型 self.ui.chkBox_Out.setChecked(Value) self.__delFileStream() @pyqtSlot() ##写 float def on_btnFloat_Write_clicked(self): Value=self.ui.spin_Float.value() if self.__iniWrite(): try: self.fileStream.writeFloat(Value) except Exception as e: QMessageBox.critical(self, "writeFloat()发生错误", str(e)) finally: self.__delFileStream() @pyqtSlot() ##读 float def on_btnFloat_Read_clicked(self): if self.__iniRead(): try: Value=self.fileStream.readFloat() self.ui.edit_Float.setText("%.4f"%Value) except Exception as e: QMessageBox.critical(self, "writeFloat()发生错误", str(e)) finally: self.__delFileStream() @pyqtSlot() ##写 double def on_btnDouble_Write_clicked(self): Value=self.ui.spin_Double.value() if self.__iniWrite(): try: self.fileStream.writeDouble(Value) except Exception as e: QMessageBox.critical(self, "writeDouble()发生错误", str(e)) finally: self.__delFileStream() @pyqtSlot() ##读 double def on_btnDouble_Read_clicked(self): if self.__iniRead(): try: Value=self.fileStream.readDouble() self.ui.edit_Double.setText("%.4f"%Value) except Exception as e: QMessageBox.critical(self, "readDouble()发生错误", str(e)) finally: self.__delFileStream() @pyqtSlot() ##写 QString,与Python的str兼容 def on_btnQStr_Write_clicked(self): Value=self.ui.editQStr_In.text() if self.__iniWrite(): try: self.fileStream.writeQString(Value) except Exception as e: QMessageBox.critical(self, "writeQString()发生错误", str(e)) finally: self.__delFileStream() @pyqtSlot() ##读 QString,与Python的str兼容 def on_btnQStr_Read_clicked(self): if self.__iniRead(): try: Value=self.fileStream.readQString() self.ui.editQStr_Out.setText(Value) except Exception as e: QMessageBox.critical(self, "readQString()发生错误", str(e)) finally: self.__delFileStream() @pyqtSlot() ##写 String def on_btnStr_Write_clicked(self): strV=self.ui.editStr_In.text() #str类型 if self.__iniWrite(): try: bts=bytes(strV,encoding="utf-8") #转换为bytes类型 self.fileStream.writeString(bts) except Exception as e: QMessageBox.critical(self, "写入时发生错误", str(e)) finally: self.__delFileStream() @pyqtSlot() ##读 String def on_btnStr_Read_clicked(self): if self.__iniRead(): try: Value=self.fileStream.readString() #bytes类型 strV=Value.decode("utf-8") #从bytes类型解码为字符串,编码utf-8 self.ui.editStr_Out.setText(strV) except Exception as e: QMessageBox.critical(self, "读取时发生错误", str(e)) finally: self.__delFileStream() ##===字体的写入与读取 @pyqtSlot() ##选择字体 def on_btnFont_In_clicked(self): font=self.ui.btnFont_In.font() font,OK=QFontDialog.getFont(font,self) #选择字体 if OK: self.ui.btnFont_In.setFont(font) @pyqtSlot() ##写 QVariant, QFont def on_btnFont_Write_clicked(self): font=self.ui.btnFont_In.font() #QFont类型 if self.__iniWrite(): self.fileStream.writeQVariant(font) #QFont类型 self.__delFileStream() @pyqtSlot() ##读 QVariant, QFont def on_btnFont_Read_clicked(self): if self.__iniRead(): try: font=self.fileStream.readQVariant() #QFont类型 self.ui.editFont_Out.setFont(font) except Exception as e: QMessageBox.critical(self, "读取时发生错误", str(e)) finally: self.__delFileStream() ##===颜色的写入与读取 @pyqtSlot() ##选择颜色 def on_btnColor_In_clicked(self): plet=self.ui.btnColor_In.palette() #QPalette color=plet.buttonText().color() #QColor color= QColorDialog.getColor(color,self) if color.isValid(): plet.setColor(QPalette.ButtonText,color) self.ui.btnColor_In.setPalette(plet) @pyqtSlot() ##写 QVariant, QColor def on_btnColor_Write_clicked(self): plet=self.ui.btnColor_In.palette() color=plet.buttonText().color() #QColor if self.__iniWrite(): self.fileStream.writeQVariant(color) #QColor self.__delFileStream() @pyqtSlot() ##读 QVariant, QColor def on_btnColor_Read_clicked(self): if self.__iniRead(): try: color=self.fileStream.readQVariant() #读取为QColor类型 plet=self.ui.editColor_Out.palette() plet.setColor(QPalette.Text,color) self.ui.editColor_Out.setPalette(plet) except Exception as e: QMessageBox.critical(self, "读取时发生错误", str(e)) finally: self.__delFileStream() @pyqtSlot() ##读出编辑框全清空 def on_actClearOutput_triggered(self): self.ui.edit_Int8.clear() self.ui.edit_UInt8.clear() self.ui.edit_Int16.clear() self.ui.edit_UInt16.clear() self.ui.edit_Int32.clear() self.ui.edit_Int64.clear() self.ui.edit_Int.clear() self.ui.edit_Float.clear() self.ui.edit_Double.clear() font=self.font() self.ui.editFont_Out.setFont(font) plet=self.palette() self.ui.editColor_Out.setPalette(plet) @pyqtSlot() ##连续写入文件 def on_actSaveALL_triggered(self): if not self.__iniWrite(): QMessageBox.critical(self,"错误","为写入打开文件时出错") return #数据写入部分 Value=self.ui.spin_Int8.value() self.fileStream.writeInt8(Value) #int8 Value=self.ui.spin_UInt8.value() self.fileStream.writeUInt8(Value) #uint8 Value=self.ui.spin_Int16.value() self.fileStream.writeInt16(Value) #int16 Value=self.ui.spin_UInt16.value() self.fileStream.writeUInt16(Value) #uint16 Value=self.ui.spin_Int32.value() self.fileStream.writeInt32(Value) #int32 Value=self.ui.spin_Int64.value() self.fileStream.writeInt64(Value) #int64 Value=self.ui.spin_Int.value() self.fileStream.writeInt(Value) #int Value=self.ui.chkBox_In.isChecked() self.fileStream.writeBool(Value) #bool Value=self.ui.spin_Float.value() self.fileStream.writeFloat(Value) #float Value=self.ui.spin_Double.value() self.fileStream.writeDouble(Value) #double str_Value=self.ui.editQStr_In.text() self.fileStream.writeQString(str_Value) #QString str_Value=self.ui.editStr_In.text() #str类型 bts=bytes(str_Value,encoding="utf-8") #转换为bytes类型 self.fileStream.writeString(bts) font=self.ui.btnFont_In.font() self.fileStream.writeQVariant(font) #QFont plet=self.ui.btnColor_In.palette() color=plet.buttonText().color() self.fileStream.writeQVariant(color) #QColor #数据写入完成 self.__delFileStream() QMessageBox.information(self,"消息","数据连续写入完成.") @pyqtSlot() ##连续读取文件 def on_actReadALL_triggered(self): if not self.__iniRead(): QMessageBox.critical(self,"错误","为读取打开文件时出错") return #数据读取部分 Value=self.fileStream.readInt8() #int8 self.ui.edit_Int8.setText("%d"%Value) Value=self.fileStream.readUInt8() #uint8 self.ui.edit_UInt8.setText("%d"%Value) Value=self.fileStream.readInt16() #int16 self.ui.edit_Int16.setText("%d"%Value) Value=self.fileStream.readUInt16() #uint16 self.ui.edit_UInt16.setText("%d"%Value) Value=self.fileStream.readInt32() #int32 self.ui.edit_Int32.setText("%d"%Value) Value=self.fileStream.readInt64() #int64 self.ui.edit_Int64.setText("%d"%Value) Value=self.fileStream.readInt() #int self.ui.edit_Int.setText("%d"%Value) Value=self.fileStream.readBool() #bool self.ui.chkBox_Out.setChecked(Value) Value=self.fileStream.readFloat() #float self.ui.edit_Float.setText("%.4f"%Value) Value=self.fileStream.readDouble() #double self.ui.edit_Double.setText("%.4f"%Value) str_Value=self.fileStream.readQString() #str self.ui.editQStr_Out.setText(str_Value) byteStr=self.fileStream.readString() #bytes str_Value=byteStr.decode("utf-8") #从bytes类型解码为字符串 self.ui.editStr_Out.setText(str_Value) font=self.fileStream.readQVariant() #QFont self.ui.editFont_Out.setFont(font) color=self.fileStream.readQVariant() #QColor plet=self.ui.editColor_Out.palette() plet.setColor(QPalette.Text,color) self.ui.editColor_Out.setPalette(plet) #数据写入完成 self.__delFileStream() QMessageBox.information(self,"消息","数据连续读取完成.")
def readMessage(self): """ 读取文件数据 """ receiver = QDataStream(self.tcpClient) receiver.setVersion(QDataStream.Qt_5_4) if self.bytesReceive <= 2: if self.tcpClient.bytesAvailable() >= 2 and self.fileNameSize == 0: self.TotalBytes = receiver.readInt64() self.fileNameSize = receiver.readInt64() self.bytesReceive += 2 # 当接收的字节数小于等2,同时套接字返回等待读取的传入字节数大于2而文件名大小不确定时,传输的总大小receiver.readInt64(),文件名大小是receiver.readInt64()。 if self.tcpClient.bytesAvailable() >= self.fileNameSize and self.fileNameSize != 0: self.fileName = receiver.readQString() self.bytesReceive += self.fileNameSize # 当我们接收的字节数一定后,我们读取文件名receiver.readQString(),自然收到的字节数要加上文件名大小。 if not(self.localFile.open(QFile.WriteOnly)): QMessageBox.warning(self, "应用程序", "无法读取文件 {}:\n {}".format(self.fileName, self.localFile.errorString())) return # 要是写文件存在问题就报错。 else: return if self.bytesReceive < self.TotalBytes: self.bytesReceive += self.tcpClient.bytesAvailable() inBlock = self.tcpClient.readAll() self.localFile.write(inBlock) inBlock.resize(0) useTime = self.time.elapsed() / 1000 bytesReceived = self.bytesReceive / (1024*1024) speed = bytesReceived / useTime total = self.TotalBytes / (1024*1024) left = (total - bytesReceived) / speed if bytesReceived < 0.01: # 要是我们收到的文件太小了,我们设定成KB为单位 bytesReceived = self.bytesReceive / 1024 speed = bytesReceived / useTime / 1024 total = self.TotalBytes / 1024 if left > 0: msg = "已接收 {0:.2f} KB ({1:.2f}KB/s)\n共{2:.2f}KB.已用时:{3:.1f}秒\n估计剩余时间:{4:.1f}秒".format(bytesReceived, speed, total, useTime, left) else: msg = "已接收 {0:.2f} KB ({1:.2f}KB/s)\n共{2:.2f}KB.已用时:{3:.1f}秒\n".format(bytesReceived, speed, total, useTime) else: # 要是文件比较大,我们设定成MB为单位 if left > 0: msg = "已接收 {0:.2f} MB ({1:.2f}MB/s)\n共{2:.2f}MB.已用时:{3:.1f}秒\n估计剩余时间:{4:.1f}秒".format(bytesReceived, speed, total, useTime, left) else: msg = "已接收 {0:.2f} MB ({1:.2f}MB/s)\n共{2:.2f}MB.已用时:{3:.1f}秒\n".format(bytesReceived, speed, total, useTime) self.progressBar.setMaximum(total) self.progressBar.setValue(bytesReceived) self.tcpClientStatuslabel.setText(msg) if self.bytesReceive == self.TotalBytes: self.localFile.close() self.tcpClient.close() self.tcpClientStatuslabel.setText("接收文件{}完毕".format(self.fileName)) self.tcpClientBtn.setEnabled(False)