Pyqt5--解析json并将内容显示在tableWidget

在开始写本博客的案例之前，梳理下功能点和知识点，方便查找和理解。

功能介绍：

1.生成json数据；

2.解析json数据并将内容显示在tableWidget中；

3.获取lineEdit中输入的内容，并将其显示在tableWidget中。

知识点梳理：

1.json

json是一种易于阅读和编写的数据交换格式。

json.dumps()函数是将字典转化为字符串------jsonStr = json.dumps(strData)

json.loads()函数是将字符串转化为字典--------res = json.loads(jsonStr)

2.Qt Designer界面设计--比较简单

控件，信号和槽的使用可以参考https://blog.csdn.net/maidu_xbd/article/details/85696510

3.tableWidget

self.ui.tableWidget.setColumnCount(5) # 设置表格的列数

self.ui.tableWidget.setRowCount(100) #设置表格的行数

mTitle = QTableWidgetItem(item['name']) #显示数据

mTitle.setTextAlignment(Qt.AlignCenter) # 设置文字显示居中

mTitle.setFlags(Qt.ItemIsEnabled) # 设置表格不可编辑模式

4.Label

self.ui.userName.setText("当前用户为：" + userName) # 设置Label显示内容

案例如下：

1.生成json数据如下：

import json

strData = {
    'status':200,
    'message':'获取信息成功!',
    'data':{
        'userInfo':{
            'name':"麦嘟小布丁",
            'sex':'女'
        },
        'meetInfo':[
            {'id': 110,
            'name': '人工智能技术会议',
            'meet_date': '2019-01-08',
            'meet_time': '16:30:00',
            'meet_address': '会议室A'},
            {'id': 221,
            'name': '学习交流会',
            'meet_date': '2018-12-19',
            'meet_time': '14:30:00',
            'meet_address': '会议室B'},
            {'id': 226,
            'name': '神经网络知识分享会',
            'meet_date': '2018-12-19',
            'meet_time': '09:00:00',
            'meet_address': '会议室C'}
            ]
    }
}

#定义接口，用来获取json数据
def getMydata():
    return json.dumps(strData)

if __name__ == "__main__":
    # json.dumps()函数是将字典转化为字符串 
    jsonStr = json.dumps(strData)
    #print(jsonStr)
    # json.loads()函数是将字符串转化为字典
    res = json.loads(jsonStr)
    print(type(res),res)

2.Qt designer完成界面设计meetList.ui

为“添加”按钮添加信号和自定义槽函数。

编译meetList.ui为Ui_meetList.py

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'c:\Users\lenovo\Desktop\解析Json\meetList.ui'
#
# Created by: PyQt5 UI code generator 5.11.3
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_MainWindow(object):

    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(559, 473)
        MainWindow.setStyleSheet("#MainWindow{background-color: rgb(170, 170, 255);}\n"
                                 "")
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.tableWidget = QtWidgets.QTableWidget(self.centralwidget)
        self.tableWidget.setGeometry(QtCore.QRect(30, 60, 491, 211))
        self.tableWidget.setObjectName("tableWidget")
        self.tableWidget.setColumnCount(5)
        self.tableWidget.setRowCount(0)
        item = QtWidgets.QTableWidgetItem()
        item.setTextAlignment(QtCore.Qt.AlignCenter)
        font = QtGui.QFont()
        font.setBold(True)
        font.setWeight(75)
        item.setFont(font)
        self.tableWidget.setHorizontalHeaderItem(0, item)
        item = QtWidgets.QTableWidgetItem()
        item.setTextAlignment(QtCore.Qt.AlignCenter)
        font = QtGui.QFont()
        font.setBold(True)
        font.setWeight(75)
        item.setFont(font)
        self.tableWidget.setHorizontalHeaderItem(1, item)
        item = QtWidgets.QTableWidgetItem()
        item.setTextAlignment(QtCore.Qt.AlignCenter)
        font = QtGui.QFont()
        font.setBold(True)
        font.setWeight(75)
        item.setFont(font)
        self.tableWidget.setHorizontalHeaderItem(2, item)
        item = QtWidgets.QTableWidgetItem()
        item.setTextAlignment(QtCore.Qt.AlignCenter)
        font = QtGui.QFont()
        font.setBold(True)
        font.setWeight(75)
        item.setFont(font)
        self.tableWidget.setHorizontalHeaderItem(3, item)
        item = QtWidgets.QTableWidgetItem()
        item.setTextAlignment(QtCore.Qt.AlignCenter)
        font = QtGui.QFont()
        font.setBold(True)
        font.setWeight(75)
        item.setFont(font)
        self.tableWidget.setHorizontalHeaderItem(4, item)
        self.userName = QtWidgets.QLabel(self.centralwidget)
        self.userName.setGeometry(QtCore.QRect(400, 30, 141, 20))
        self.userName.setObjectName("userName")
        self.label_2 = QtWidgets.QLabel(self.centralwidget)
        self.label_2.setGeometry(QtCore.QRect(30, 20, 431, 20))
        font = QtGui.QFont()
        font.setFamily("微软雅黑")
        font.setPointSize(14)
        font.setBold(True)
        font.setWeight(75)
        self.label_2.setFont(font)
        self.label_2.setObjectName("label_2")
        self.label_3 = QtWidgets.QLabel(self.centralwidget)
        self.label_3.setGeometry(QtCore.QRect(50, 300, 181, 16))
        font = QtGui.QFont()
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.label_3.setFont(font)
        self.label_3.setObjectName("label_3")
        self.label_4 = QtWidgets.QLabel(self.centralwidget)
        self.label_4.setGeometry(QtCore.QRect(60, 340, 91, 16))
        font = QtGui.QFont()
        font.setPointSize(11)
        self.label_4.setFont(font)
        self.label_4.setObjectName("label_4")
        self.label_5 = QtWidgets.QLabel(self.centralwidget)
        self.label_5.setGeometry(QtCore.QRect(280, 340, 101, 16))
        font = QtGui.QFont()
        font.setPointSize(11)
        self.label_5.setFont(font)
        self.label_5.setObjectName("label_5")
        self.label_6 = QtWidgets.QLabel(self.centralwidget)
        self.label_6.setGeometry(QtCore.QRect(45, 379, 91, 16))
        font = QtGui.QFont()
        font.setPointSize(11)
        self.label_6.setFont(font)
        self.label_6.setObjectName("label_6")
        self.label_7 = QtWidgets.QLabel(self.centralwidget)
        self.label_7.setGeometry(QtCore.QRect(280, 380, 71, 16))
        font = QtGui.QFont()
        font.setPointSize(11)
        self.label_7.setFont(font)
        self.label_7.setObjectName("label_7")
        self.addMeetBtn = QtWidgets.QPushButton(self.centralwidget)
        self.addMeetBtn.setGeometry(QtCore.QRect(450, 300, 75, 23))
        self.addMeetBtn.setObjectName("addMeetBtn")
        self.meetId = QtWidgets.QLineEdit(self.centralwidget)
        self.meetId.setGeometry(QtCore.QRect(120, 340, 151, 20))
        self.meetId.setObjectName("meetId")
        self.meetTitle = QtWidgets.QLineEdit(self.centralwidget)
        self.meetTitle.setGeometry(QtCore.QRect(360, 340, 171, 20))
        self.meetTitle.setObjectName("meetTitle")
        self.meetTime = QtWidgets.QLineEdit(self.centralwidget)
        self.meetTime.setGeometry(QtCore.QRect(120, 380, 151, 20))
        self.meetTime.setObjectName("meetTime")
        self.meetAddress = QtWidgets.QLineEdit(self.centralwidget)
        self.meetAddress.setGeometry(QtCore.QRect(360, 380, 171, 20))
        self.meetAddress.setObjectName("meetAddress")
        MainWindow.setCentralWidget(self.centralwidget)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        self.addMeetBtn.clicked.connect(MainWindow.addMeetBtn_clicked)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        item = self.tableWidget.horizontalHeaderItem(0)
        item.setText(_translate("MainWindow", "会议id"))
        item = self.tableWidget.horizontalHeaderItem(1)
        item.setText(_translate("MainWindow", "会议名称"))
        item = self.tableWidget.horizontalHeaderItem(2)
        item.setText(_translate("MainWindow", "会议时间"))
        item = self.tableWidget.horizontalHeaderItem(3)
        item.setText(_translate("MainWindow", "会议地点"))
        item = self.tableWidget.horizontalHeaderItem(4)
        item.setText(_translate("MainWindow", "备注"))
        self.userName.setText(_translate("MainWindow", "当前用户为：张三"))
        self.label_2.setText(_translate("MainWindow", "会议列表信息"))
        self.label_3.setText(_translate("MainWindow", "新增会议信息"))
        self.label_4.setText(_translate("MainWindow", "会议id："))
        self.label_5.setText(_translate("MainWindow", "会议名称："))
        self.label_6.setText(_translate("MainWindow", "会议时间："))
        self.label_7.setText(_translate("MainWindow", "会议地点："))
        self.addMeetBtn.setText(_translate("MainWindow", "添加"))

3.解析json,将内容显示在tableWidget中 ------ def loadMeetInfo(self)

定义addMeetBtn_clicked()函数，获取LineEdit内容并将内容显示在tableWidget中，每点击添加按钮一次，往当前行的下一行插入数据。

from meetInfo import getMydata
from Ui_meetList import Ui_MainWindow
from PyQt5.QtWidgets import *
import sys
import json
from PyQt5.QtCore import *


class MainWin(QMainWindow):

    def __init__(self):
        super(MainWin, self).__init__()
        print("mainwin is called!")
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)
        self.ui.tableWidget.setColumnCount(5)  # 设置表格的列数
        # self.ui.tableWidget.setRowCount(100)           #设置表格的行数
        self.loadMeetInfo()
        print(f"current rows:{self.ui.tableWidget.currentRow()}")

    def loadMeetInfo(self):
        data = getMydata()
        # 获取信息列表
        meetData = json.loads(data)['data']
        # 获取用户信息
        userInfo = meetData['userInfo']
        userName = userInfo['name']
        self.ui.userName.setText("当前用户为：" + userName)

        # 获取会议详情
        meetInfo = meetData['meetInfo']
        # index=0
        for i, item in enumerate(meetInfo):
            # index+=1
            # str(item['id'])将整型转换为字符串
            self.ui.tableWidget.setRowCount(self.ui.tableWidget.rowCount() + 1)
            print(self.ui.tableWidget.rowCount())
            mId = QTableWidgetItem(str(item['id']))
            mId.setTextAlignment(Qt.AlignCenter)  # 设置文字显示居中
            mId.setFlags(Qt.ItemIsEnabled)  # 设置表格不可编辑模式
            self.ui.tableWidget.setItem(
                self.ui.tableWidget.rowCount() - 1, 0, mId)

            mTitle = QTableWidgetItem(item['name'])
            mTitle.setTextAlignment(Qt.AlignCenter)  # 设置文字显示居中
            mTitle.setFlags(Qt.ItemIsEnabled)  # 设置表格不可编辑模式
            self.ui.tableWidget.setItem(
                self.ui.tableWidget.rowCount() - 1, 1, mTitle)

            mTime = QTableWidgetItem(item['meet_time'])
            mTime.setTextAlignment(Qt.AlignCenter)  # 设置文字显示居中
            mTime.setFlags(Qt.ItemIsEnabled)  # 设置表格不可编辑模式
            self.ui.tableWidget.setItem(
                self.ui.tableWidget.rowCount() - 1, 2, mTime)

            mAddress = QTableWidgetItem(item['meet_address'])
            mAddress.setTextAlignment(Qt.AlignCenter)  # 设置文字显示居中
            mAddress.setFlags(Qt.ItemIsEnabled)  # 设置表格不可编辑模式
            self.ui.tableWidget.setItem(
                self.ui.tableWidget.rowCount() - 1, 3, mAddress)
        # return index

    def addMeetBtn_clicked(self):
        i = self.ui.tableWidget.rowCount()
        i += 1
        self.ui.tableWidget.setRowCount(i)
        meetId = self.ui.meetId.text()
        # print(type(meetId))
        mId = QTableWidgetItem(meetId)
        mId.setTextAlignment(Qt.AlignCenter)  # 设置文字显示居中
        self.ui.tableWidget.setItem(i - 1, 0, mId)

        meetTitle = self.ui.meetTitle.text()
        mTitle = QTableWidgetItem(meetTitle)
        mTitle.setTextAlignment(Qt.AlignCenter)  # 设置文字显示居中
        self.ui.tableWidget.setItem(i - 1, 1, mTitle)

        meetTime = self.ui.meetTime.text()
        mTime = QTableWidgetItem(meetTime)
        mTime.setTextAlignment(Qt.AlignCenter)  # 设置文字显示居中
        self.ui.tableWidget.setItem(i - 1, 2, mTime)

        meetAddress = self.ui.meetAddress.text()
        mAddress = QTableWidgetItem(meetAddress)
        mAddress.setTextAlignment(Qt.AlignCenter)  # 设置文字显示居中
        self.ui.tableWidget.setItem(i - 1, 3, mAddress)

        # LineEdit内容清除
        self.ui.meetId.setText("")
        self.ui.meetTitle.setText("")
        self.ui.meetTime.setText("")
        self.ui.meetAddress.setText("")


if __name__ == "__main__":
    app = QApplication(sys.argv)
    main = MainWin()
    # 显示主界面
    main.show()

    sys.exit(app.exec_())

4.结果展示

前3条会议信息为从解析json获得，第4条会议信息为通过新增会议信息添加。