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前言
上编blog说到用Python开发Windows桌面应用程序的环境搭建，下面就说说如何实现一个简单的远程日志读取的功能。
界面绘制
打开界面绘制工具，选中项目后，右键找到External Tools,然后选择QtDesigner
打开Qt Designer工作台，然后我们选择Main Window就可以在这个画布上尽情的绘制我们需要的界面呈现样式了
我绘制好的界面如下（远程查询Linux服务器上的日志）
我这里做的功能非常简单，连接服务器，然后查询设备对应的原始数据，这里有两个按钮，我们首先给按钮绑定点击事件
然后弹出按钮配置界面
因为我们绑定的是点击事件，所以这里选择第一个clicked()
点击最后一步的+号，创建一个点击事件，然后点击OK即可
将创建好的界面保存后，我们回到pycharm可以看到.ui文件
最后将.ui文件通过PyUIC转成对应的.py文件
最后我们看一下.py文件
# -*- coding: utf-8 -*- # Form implementation generated from reading ui file
'MainForm.ui' # # Created by: PyQt5 UI code generator 5.15.0 # # WARNING: Any
manual changes made to this file will be lost when pyuic5 is # run again. Do
not edit this file unless you know what you are doing. from PyQt5 import
QtCore, QtGui, QtWidgets class Ui_MainWindow(object): def setupUi(self,
MainWindow): MainWindow.setObjectName("MainWindow") MainWindow.resize(1434,
790) self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget") self.B_Query =
QtWidgets.QPushButton(self.centralwidget)
self.B_Query.setGeometry(QtCore.QRect(60, 480, 141, 41)) font = QtGui.QFont()
font.setPointSize(12) font.setBold(True) font.setWeight(75)
self.B_Query.setFont(font) self.B_Query.setObjectName("B_Query") self.label_4 =
QtWidgets.QLabel(self.centralwidget) self.label_4.setGeometry(QtCore.QRect(20,
323, 81, 31)) font = QtGui.QFont() font.setPointSize(12) font.setBold(True)
font.setWeight(75) self.label_4.setFont(font)
self.label_4.setObjectName("label_4") self.dTE_Start =
QtWidgets.QDateTimeEdit(self.centralwidget)
self.dTE_Start.setGeometry(QtCore.QRect(100, 420, 201, 31)) font =
QtGui.QFont() font.setFamily("Agency FB") font.setPointSize(12)
font.setBold(True) font.setWeight(75) self.dTE_Start.setFont(font)
self.dTE_Start.setDate(QtCore.QDate(2020, 1, 1))
self.dTE_Start.setObjectName("dTE_Start") self.E_ID =
QtWidgets.QLineEdit(self.centralwidget) self.E_ID.setGeometry(QtCore.QRect(100,
323, 200, 30)) font = QtGui.QFont() font.setFamily("Agency FB")
font.setPointSize(12) font.setBold(True) font.setWeight(75)
self.E_ID.setFont(font) self.E_ID.setObjectName("E_ID") self.label_5 =
QtWidgets.QLabel(self.centralwidget) self.label_5.setGeometry(QtCore.QRect(20,
420, 81, 31)) font = QtGui.QFont() font.setPointSize(12) font.setBold(True)
font.setWeight(75) self.label_5.setFont(font)
self.label_5.setObjectName("label_5") self.E_IP =
QtWidgets.QLineEdit(self.centralwidget) self.E_IP.setGeometry(QtCore.QRect(100,
10, 200, 30)) font = QtGui.QFont() font.setFamily("Agency FB")
font.setPointSize(12) font.setBold(True) font.setWeight(75)
self.E_IP.setFont(font) self.E_IP.setObjectName("E_IP") self.label =
QtWidgets.QLabel(self.centralwidget) self.label.setGeometry(QtCore.QRect(10,
10, 78, 26)) font = QtGui.QFont() font.setPointSize(12) font.setBold(True)
font.setWeight(75) self.label.setFont(font) self.label.setObjectName("label")
self.E_Psd = QtWidgets.QLineEdit(self.centralwidget)
self.E_Psd.setGeometry(QtCore.QRect(100, 90, 200, 30)) font = QtGui.QFont()
font.setFamily("Agency FB") font.setPointSize(12) font.setBold(True)
font.setWeight(75) self.E_Psd.setFont(font) self.E_Psd.setObjectName("E_Psd")
self.B_Connect = QtWidgets.QPushButton(self.centralwidget)
self.B_Connect.setGeometry(QtCore.QRect(60, 130, 141, 41)) font = QtGui.QFont()
font.setPointSize(12) font.setBold(True) font.setWeight(75)
self.B_Connect.setFont(font) self.B_Connect.setObjectName("B_Connect")
self.label_3 = QtWidgets.QLabel(self.centralwidget)
self.label_3.setGeometry(QtCore.QRect(20, 90, 43, 26)) font = QtGui.QFont()
font.setPointSize(12) font.setBold(True) font.setWeight(75)
self.label_3.setFont(font) self.label_3.setObjectName("label_3") self.E_User =
QtWidgets.QLineEdit(self.centralwidget)
self.E_User.setGeometry(QtCore.QRect(100, 50, 200, 30)) font = QtGui.QFont()
font.setFamily("Agency FB") font.setPointSize(12) font.setBold(True)
font.setWeight(75) self.E_User.setFont(font)
self.E_User.setObjectName("E_User") self.label_2 =
QtWidgets.QLabel(self.centralwidget) self.label_2.setGeometry(QtCore.QRect(10,
55, 60, 26)) font = QtGui.QFont() font.setPointSize(12) font.setBold(True)
font.setWeight(75) self.label_2.setFont(font)
self.label_2.setObjectName("label_2") self.verticalLayoutWidget =
QtWidgets.QWidget(self.centralwidget)
self.verticalLayoutWidget.setGeometry(QtCore.QRect(310, 0, 1121, 781))
self.verticalLayoutWidget.setObjectName("verticalLayoutWidget")
self.verticalLayout_3 = QtWidgets.QVBoxLayout(self.verticalLayoutWidget)
self.verticalLayout_3.setContentsMargins(0, 0, 0, 0)
self.verticalLayout_3.setObjectName("verticalLayout_3") self.textEdit =
QtWidgets.QTextEdit(self.verticalLayoutWidget)
self.textEdit.setLayoutDirection(QtCore.Qt.LeftToRight)
self.textEdit.setLineWidth(0) self.textEdit.setObjectName("textEdit")
self.verticalLayout_3.addWidget(self.textEdit) self.comboBox =
QtWidgets.QComboBox(self.centralwidget)
self.comboBox.setGeometry(QtCore.QRect(100, 370, 201, 31))
self.comboBox.setObjectName("comboBox") self.label_7 =
QtWidgets.QLabel(self.centralwidget) self.label_7.setGeometry(QtCore.QRect(20,
370, 81, 31)) font = QtGui.QFont() font.setPointSize(12) font.setBold(True)
font.setWeight(75) self.label_7.setFont(font)
self.label_7.setObjectName("label_7")
MainWindow.setCentralWidget(self.centralwidget) self.retranslateUi(MainWindow)
self.B_Connect.clicked.connect(MainWindow.connectServer_click)
self.B_Query.clicked.connect(MainWindow.queryRowData_click)
QtCore.QMetaObject.connectSlotsByName(MainWindow) def retranslateUi(self,
MainWindow): _translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.B_Query.setText(_translate("MainWindow", "查询"))
self.label_4.setText(_translate("MainWindow", "设备ID:"))
self.dTE_Start.setDisplayFormat(_translate("MainWindow", "yyyy-MM-dd"))
self.label_5.setText(_translate("MainWindow", "选择日期:"))
self.label.setText(_translate("MainWindow", "服务器IP:"))
self.B_Connect.setText(_translate("MainWindow", "连接"))
self.label_3.setText(_translate("MainWindow", "密码:"))
self.label_2.setText(_translate("MainWindow", "用户名:"))
self.label_7.setText(_translate("MainWindow", "协议类型:"))
主方法里面实现代码如下：
#coding=gbk #coding=utf-8 #-*- coding: UTF-8 -* import tkinter import
tkinter.messagebox import paramiko from PyQt5.QtCore import QDate from MainForm
import Ui_MainWindow from PyQt5 import QtWidgets import sys import re class
query_window(QtWidgets.QMainWindow): client=None def __init__(self):
QtWidgets.QMainWindow.__init__(self) self.ui = Ui_MainWindow()
self.ui.setupUi(self) self.ui.dTE_Start.setDate(QDate.currentDate())
self.ui.comboBox.addItem('JT701') self.ui.comboBox.addItem('JT701-TRA')
self.ui.comboBox.addItem('JT709A/JT705A/JT707A') #B_Connect 的 点击动作绑定一个事件处理函数
def connectServer_click(self): global client client = paramiko.SSHClient()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
client.connect(self.ui.E_IP.text(), 22, self.ui.E_User.text(),
self.ui.E_Psd.text(), compress=True) root = tkinter.Tk() root.withdraw() if
client != None: tkinter.messagebox.showinfo("提示", "连接成功") else:
tkinter.messagebox.showinfo("提示", "连接失败") # B_Query 的 点击动作绑定一个事件处理函数 def
queryRowData_click(self): assetType = self.ui.comboBox.currentText() global
logPath if assetType=='JT701':
logPath="/opt/gnss/jt701-server/logs/jt701-server-"+self.ui.dTE_Start.date().toString("yyyy-MM-dd")+".log"
elif assetType=='JT701-TRA': logPath =
"/opt/gnss/tra701-server/logs/tra701-server-" +
self.ui.dTE_Start.date().toString("yyyy-MM-dd")+ ".log" else: logPath =
"/opt/gnss/jt707-server/logs/jt707-server-" +
self.ui.dTE_Start.date().toString("yyyy-MM-dd")+ ".log" remote_file =
client.open_sftp().open(logPath) try: for line in remote_file: if
line.find("ProtocolDecoder") != -1 & line.find(self.ui.E_ID.text())!=-1: result
= re.findall("INFO(.*)收到:", line) for rinfo in result: rline =
line.replace(rinfo, '').replace('INFO', '') self.ui.textEdit.append(rline)
finally: remote_file.close()
self.ui.textEdit.append("END--------------------------------------------------------------------------")
if __name__ == '__main__': app = QtWidgets.QApplication(sys.argv) window =
query_window() window.show() sys.exit(app.exec_())
最后运行后界面截图：