[嵌入式]一个基于QT开发的《智慧河道监测》项目的上位机

最近项目中需要一个显示传感器相关数据的集成化上位机，分别显示硬件中的雷达、油污监测管、温湿度传感器、雨量传感器等传回的数据，数据是通过串口传送的，后期的话要考虑4G模组通过TCP协议进行读入，因此先搭建一个串口调试助手的界面，可以实时显示串口传入的数据值，并用折线图显示出来，同时实现了天气的API查询。具体代码如下所示。

//mainwindow.h头文件
#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include "qcustomplot.h"
#include "weather.h"
#include "widget.h"
#include <QHBoxLayout>
#include <QDebug>
#include <QSerialPort>//提供访问串口的功能
#include <QSerialPortInfo>//提供系统中存在的串口的信息
#include <QTime>
#include <QtNetwork/QNetworkAccessManager>
#include <QtNetwork/QNetworkRequest>
#include <QtNetwork/QNetworkReply>
#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonArray>



namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = nullptr);
    ~MainWindow();
    QByteArray buf;

    double buffer;
    double tempnum[30];
    double n;
    double newdata;

private slots:
    void datetimeShow();

    void weatherShow();

    void on_openButton_clicked();

    void on_sendButton_clicked();

    void ReadData();

    void on_plotButton_clicked();

    void SerialData();

    void UpdateData(QCustomPlot *customPlot,double tempnum[30],double n);

    void on_weatherButton_clicked();

signals:
    void plotButton_clicked();

private:
    Ui::MainWindow *ui;
    Weather *weather;
    QSerialPort *serial;

};

#endif // MAINWINDOW_H

//mainwindow.cpp 源文件
#include "mainwindow.h"
#include "ui_mainwindow.h"


MainWindow::MainWindow(QWidget *parent):
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    foreach(const QSerialPortInfo &info,QSerialPortInfo::availablePorts())
    {//寻找可用串口，将串口名添加到ui->serialnameBox中
        QSerialPort serial;//创建串口对象
        serial.setPort(info);//读取串口参数
        if(serial.open(QIODevice::ReadWrite))
        {
            ui->serialnameBox->addItem(serial.portName());//串口名添加
            serial.close();
        }
    }
    ui->bautBox->setCurrentIndex(3);//初始化9600比特率
    ui->dataBox->setCurrentIndex(3);
    ui->stopBox->setCurrentIndex(0);
    ui->checkBox->setCurrentIndex(0);//初始化8-0-1

    this->setWindowTitle("智慧河道监测系统");
    this->setWindowIcon(QIcon("E:\\Qt\\source\\icons\\earth.ico"));
    ui->tabWidget->setTabIcon(0,QIcon("E:\\Qt\\source\\icons\\setting.ico"));
    ui->tabWidget->setTabIcon(1,QIcon("E:\\Qt\\source\\icons\\show.ico"));
    ui->tabWidget->setTabIcon(2,QIcon("E:\\Qt\\source\\icons\\record.ico"));
    ui->tabWidget->setIconSize(QSize(50,25));
    ui->tabWidget->setAttribute(Qt::WA_StyledBackground);

    weather=new Weather(QStringLiteral("西安"));
    QTimer *dataTimer= new QTimer();
    connect(dataTimer,SIGNAL(timeout()),this,SLOT(SerialData()));
    connect(dataTimer,SIGNAL(timeout()),this,SLOT(datetimeShow()));
    connect(dataTimer,SIGNAL(timeout()),this,SLOT(weatherShow()));
    connect(weather,&Weather::getDataSuccessedSignal,this,&MainWindow::weatherShow);

    dataTimer->start(1000);//每一秒（1000ms）刷新一次
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::datetimeShow()
{
    QDateTime nowdatetime = QDateTime::currentDateTime();
    QString nowdate=nowdatetime.toString("yyyy-MM-dd");
    QString nowtime=nowdatetime.toString("hh:mm:ss");
    ui->nowdateLabel->setText(nowdate);
    ui->nowtimeLabel->setText(nowtime);
}

void MainWindow::weatherShow()
{
    ui->temperatureLabel->setText(weather->wendu);
    ui->windLabel->setText(weather->fengli);
}

void MainWindow::on_openButton_clicked()
{//点击openButton时的SLOT，进行串口的打开与关闭
    if(ui->openButton->text()==tr("打开串口"))
    {
        serial=new QSerialPort;
        serial->setPortName(ui->serialnameBox->currentText());
        serial->open(QIODevice::ReadWrite);
        switch (ui->bautBox->currentIndex())
        {
            case 0:
                serial->setBaudRate(QSerialPort::Baud1200);
                break;
            case 1:
                serial->setBaudRate(QSerialPort::Baud2400);
                break;
            case 2:
                serial->setBaudRate(QSerialPort::Baud4800);
                break;
            case 3:
                serial->setBaudRate(QSerialPort::Baud9600);
                break;
            case 4:
                serial->setBaudRate(QSerialPort::Baud19200);
                break;
            case 5:
                serial->setBaudRate(QSerialPort::Baud38400);
                break;
            case 6:
                serial->setBaudRate(QSerialPort::Baud57600);
                break;
            case 7:
                serial->setBaudRate(QSerialPort::Baud115200);
                break;
        }
        switch (ui->dataBox->currentIndex())
        {
            case 0:
                serial->setDataBits(QSerialPort::Data5);
                break;
            case 1:
                serial->setBaudRate(QSerialPort::Data6);
                break;
            case 2:
                serial->setBaudRate(QSerialPort::Data7);
                break;
            case 3:
                serial->setBaudRate(QSerialPort::Data8);
                break;
        }
        switch (ui->checkBox->currentIndex())
        {
            case 0:
                serial->setParity(QSerialPort::NoParity);
                break;
            case 1:
                serial->setParity(QSerialPort::OddParity);
                break;
            case 2:
                serial->setParity(QSerialPort::EvenParity);
                break;
        }
        switch (ui->stopBox->currentIndex())
        {
            case 0:
                serial->setStopBits(QSerialPort::OneStop);
                break;
            case 1:
                serial->setStopBits(QSerialPort::OneAndHalfStop);
                break;
            case 2:
                serial->setStopBits(QSerialPort::TwoStop);
                break;
        }

        serial->setFlowControl(QSerialPort::NoFlowControl);
        ui->serialnameBox->setEnabled(false);
        ui->dataBox->setEnabled(false);
        ui->checkBox->setEnabled(false);
        ui->bautBox->setEnabled(false);
        ui->stopBox->setEnabled(false);
        ui->openButton->setText("关闭串口");

        QObject::connect(serial,&QSerialPort::readyRead,this,&MainWindow::ReadData);
    }

    else {
        serial->clear();
        serial->close();
        serial->deleteLater();
        ui->serialnameBox->setEnabled(true);
        ui->dataBox->setEnabled(true);
        ui->checkBox->setEnabled(true);
        ui->bautBox->setEnabled(true);
        ui->stopBox->setEnabled(true);
        ui->openButton->setText("打开串口");
    }
}

void MainWindow::on_sendButton_clicked()
{
    if(ui->openButton->text()==tr("打开串口"))
    {
        ui->receiveTextEdit->appendPlainText("请先选择串口");
    }
    else {
        serial->write(ui->sendTextEdit->toPlainText().toLatin1());
    }
}

void MainWindow::ReadData()
{
    buf=serial->readAll();//得到串口读入数据，是QByteArray型
    if(!buf.isEmpty())
    {
        QString str=buf;
        ui->receiveTextEdit->appendPlainText(str);
        qDebug()<<buf.toHex();
    }
    buffer=buf.toFloat()*50;
    buf.clear();
}

void MainWindow::on_plotButton_clicked()
{
    emit plotButton_clicked();
}

void MainWindow::SerialData()
{
    UpdateData(ui->dataplot,tempnum,buffer);//每过一秒，更新串口接收转换数据，是float型
}

void MainWindow::UpdateData(QCustomPlot *customPlot,double tempnum[30],double n)
{
    QVector <double> key(30);
    QVector <double> value1(30);
    double now = QDateTime::currentDateTime().toTime_t();
    for(int i=0; i<29; i++){
        tempnum[i] =tempnum[i+1];//后9个点左移一位到前9个点
    }
    tempnum[29] = n;//更新新点
    for(int i = 0; i<30; i++)
        {
        key[i] = now-30+i;//横轴的时间显示
        value1[i] = tempnum[i];//纵轴的数值
    }
    ui->dataplot->addGraph();
    ui->dataplot->graph(0)->setPen(QPen(Qt::blue));
    ui->dataplot->graph(0)->setData(key,value1);

    ui->dataplot->xAxis->setLabel("time");
    ui->dataplot->yAxis->setLabel("throughput/Mbps");//横纵轴

    QSharedPointer<QCPAxisTickerDateTime> dateTicker(new QCPAxisTickerDateTime);
    //dateTicker->setDateTimeFormat("hh:mm:ss"); // yyyy-MM-dd hh:mm:ss
    dateTicker->setDateTimeFormat("hh:mm:ss\nyyyy-MM-dd");
    ui->dataplot->xAxis->setTicker(dateTicker);
    //ui->dataplot->xAxis->setTickLabelRotation(30); //旋转30度
    ui->dataplot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom | QCP::iSelectPlottables);//鼠标可移动缩放

    ui->dataplot->xAxis->setRange(now-30,now);//确定框体范围
    ui->dataplot->yAxis->setRange(0,1000);//确定框体范围
    ui->dataplot->replot();
}

void MainWindow::on_weatherButton_clicked()
{
    Widget *wg=new Widget;
    wg->show();
}

//weather.h
/*
 * 天气获取类
 */

#ifndef WEATHER_H
#define WEATHER_H

#include <QObject>
#include <QNetworkAccessManager>
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonArray>
#include <QMap>
#include <QMultiMap>

class Weather : public QObject
{
    Q_OBJECT
public:
    explicit Weather(QObject *parent = nullptr);
    explicit Weather(QString cityName = "");

public:
    void setCityName(QString cityName); //设置城市名
    QString getCityName();              //获取城市名
    QString getDate();                  //获取当前日期
    QString getFengLi();                //获取风向风力
    QString getWenDu();                 //获取温度范围
    QString getTianQiType();            //获取天气类型
    QString getCurrentWendu();          //获取当前温度
    QString getGanMaoInfo();            //获取感冒提示
    QString getAllInfo();               //获取原始的所有字段
    bool isGetDataSuccessd();           //是否成功获取数据
    void refresh();                     //刷新
    QMap<QString, QMap<QString, QString> > getDataMap(bool *ok=nullptr);    //获取昨天以及未来5天的天气预测
    void print_Debug_allinfoMap();      //调试打印所有信息
    QString fengli;       //风力
    QString wendu;        //温度
signals:
    void getDataFinisedSignal();//获取数据结束的信号
    void getDataSuccessedSignal();//获取数据成功的信号
    void getDataFailedSignal();//获取数据失败的信号

public slots:
    void replyFinished(QNetworkReply *reply);//刷新的槽

private:
    void queryWeather();//查询

private:
    QString cityName;
    QNetworkAccessManager *manager;  //请求句柄
    QString allinfo;       //所有信息
    //以下皆是当天，未来几天的数据框通过获取日期的数据列表
    QString date;//当前日期

    QString currentwendu;//当前温度
    QString weather_type;  //天气类型
    QString ganmao;//对于感冒提示
    bool isGetData=false;//是否成功获取数据
    QMap<QString,QMap<QString,QString>> dataMap;
};

#endif // WEATHER_H

//weather.cpp
/*
 * 天气获取类
 */
#include "weather.h"

Weather::Weather(QObject *parent) : QObject(parent)
{
    manager = new QNetworkAccessManager(this);  //新建QNetworkAccessManager对象
    connect(manager,SIGNAL(finished(QNetworkReply*)),this,SLOT(replyFinished(QNetworkReply*)));//关联信号和槽
}

Weather::Weather(QString cityName)
{
    manager = new QNetworkAccessManager(this);  //新建QNetworkAccessManager对象
    connect(manager,SIGNAL(finished(QNetworkReply*)),this,SLOT(replyFinished(QNetworkReply*)));//关联信号和槽
    this->cityName=cityName;
    refresh();
}

void Weather::setCityName(QString cityName)
{
    this->cityName=cityName;
}

QString Weather::getCityName()
{
    return this->cityName;
}

/*
 * 获取当前日期
 */
QString Weather::getDate()
{
    return this->date;
}

QString Weather::getFengLi()
{
    return this->fengli;
}

QString Weather::getWenDu()
{
    return this->wendu;
}

QString Weather::getTianQiType()
{
    return this->weather_type;
}

QString Weather::getCurrentWendu()
{
    return this->currentwendu;
}

QString Weather::getGanMaoInfo()
{
    return this->ganmao;
}

QString Weather::getAllInfo()
{
    return this->allinfo;
}

bool Weather::isGetDataSuccessd()
{
    return this->isGetData;
}

/*
 * 刷新天气
 */
void Weather::refresh()
{
    this->currentwendu.clear();
    this->wendu.clear();
    this->ganmao.clear();
    this->fengli.clear();
    this->weather_type.clear();
    this->allinfo.clear();
    queryWeather();
    dataMap.clear();//刷新的清空，待获取时在加载
}

QMap<QString, QMap<QString, QString> > Weather::getDataMap(bool *ok)
{
    bool Oktemp;
    if(ok==nullptr)
        ok=&Oktemp;
    if(!this->dataMap.isEmpty())
    {
        *ok=true;
        return this->dataMap;
    }
    *ok=false;
    if(!this->isGetData)
        return this->dataMap;
    QJsonParseError err;
    QJsonDocument json_recv = QJsonDocument::fromJson(allinfo.toUtf8(),&err);//解析json对象
    qDebug() <<"Json-Error:"<< err.error;
    if(!json_recv.isNull())
    {
        QJsonObject object = json_recv.object();

        if(object.contains("data"))
        {
            QJsonValue value = object.value("data");  // 获取指定 key 对应的 value
            if(value.isObject())
            {
                QJsonObject object_data = value.toObject();
                if(object_data.contains("yesterday")&&object_data.contains("forecast"))//若存在昨天及预测天气则加载所有数据
                {
                    QJsonValue value=object_data.value("yesterday");
                    if(value.isObject())
                    {
                        QMap<QString,QString>mapvalue;
                        mapvalue["high"]=value.toObject().value("high").toString();
                        mapvalue["low"]=value.toObject().value("low").toString();
                        mapvalue["fengxiang"]=value.toObject().value("fx").toString();
                        mapvalue["fengli"]=value.toObject().value("fl").toString();
                        mapvalue["type"]=value.toObject().value("type").toString();
                        dataMap[value.toObject().value("date").toString()]=mapvalue;
                    }
                    value = object_data.value("forecast");
                    if(value.isArray())
                    {
                        QJsonArray valueArray=value.toArray();
                        qDebug()<<"WeatherData count:"<<valueArray.count();
                        for(int i=0;i<valueArray.count();i++)
                        {
                            QJsonObject object = valueArray.at(i).toObject();
                            QMap<QString,QString>mapvalue;
                            mapvalue["high"]=object.value("high").toString();
                            mapvalue["low"]=object.value("low").toString();
                            mapvalue["fengxiang"]=object.value("fengxiang").toString();
                            mapvalue["fengli"]=object.value("fengli").toString();
                            mapvalue["type"]=object.value("type").toString();
                            dataMap[object.value("date").toString()]=mapvalue;
                        }

//                        QString low = today_weather.value("low").toString();
//                        QString high = today_weather.value("high").toString();
//                        QString strength = today_weather.value("fengli").toString();
//                        strength.remove(0,8);
//                        strength.remove(strength.length()-2,2);
/*
                          {
                            "data":
                            {
                                "yesterday":
                                    {
                                        "date":"17日星期六","high":"高温 32℃","fx":"北风","low":"低温 19℃","fl":"<![CDATA[3-4级]]>","type":"晴"
                                    },
                                "city":"北京",
                                "forecast":[
                                    {
                                        "date":"18日星期天","high":"高温 32℃","fengli":"<![CDATA[<3级]]>","low":"低温 21℃","fengxiang":"北风","type":"晴"
                                    },
                                    {
                                        "date":"19日星期一","high":"高温 31℃","fengli":"<![CDATA[<3级]]>","low":"低温 22℃","fengxiang":"南风","type":"多云"
                                    },
                                    {
                                        "date":"20日星期二","high":"高温 25℃","fengli":"<![CDATA[<3级]]>","low":"低温 20℃","fengxiang":"南风","type":"小雨"
                                    },
                                    {
                                        "date":"21日星期三","high":"高温 31℃","fengli":"<![CDATA[<3级]]>","low":"低温 21℃","fengxiang":"北风","type":"多云"
                                    },
                                    {
                                        "date":"22日星期四","high":"高温 30℃","fengli":"<![CDATA[<3级]]>","low":"低温 22℃","fengxiang":"北风","type":"晴"
                                    }
                                ],
                                "ganmao":"各项气象条件适宜，发生感冒机率较低。但请避免长期处于空调房间中，以防感冒。",
                                "wendu":"24"
                            },
                            "status":1000,
                            "desc":"OK"
                        }
*/
                        qDebug()<<QString::fromLocal8Bit("获取天气成功");
                        *ok=true;
                        return dataMap;
                    }
                }
            }
        }
    }else
    {
        qDebug()<<"json_recv is NULL or is not a object !!";
    }
    return dataMap;
}

/*
 * qDebug打印Map数据
 */
void Weather::print_Debug_allinfoMap()
{
    getDataMap();
    qDebug()<<endl;
    qDebug()<<"city:"<<this->cityName;
    qDebug()<<"wendu:"<<this->wendu;
    qDebug()<<"currentwendu:"<<this->currentwendu;
    qDebug()<<"fengli:"<<this->fengli;
    qDebug()<<"weather_type:"<<this->weather_type;
    qDebug()<<"ganmao:"<<this->ganmao;
    QString str;
    foreach (QString key, dataMap.keys()) {
        str="date"+key+"[";
        foreach (QString key1, dataMap.value(key).keys()) {
//            qDebug()<<key1<<dataMap.value(key).value(key1);
            str+=key1+':'+dataMap.value(key).value(key1)+' ';
        }
        str+=']';
        qDebug()<<str;
    }
    dataMap.clear();
}

void Weather::replyFinished(QNetworkReply *reply)
{
    this->isGetData=false;
    qDebug()<<"recv weather data!!";
    allinfo = reply->readAll();
//    ui->textEdit->setText(all); //将接收到的数据显示出来

    QJsonParseError err;
    QJsonDocument json_recv = QJsonDocument::fromJson(allinfo.toUtf8(),&err);//解析json对象
    qDebug() <<"Json-Error:"<< err.error;
    if(!json_recv.isNull())
    {
        QJsonObject object = json_recv.object();
        if(object.contains("data"))
        {
            QJsonValue value = object.value("data");  // 获取指定 key 对应的 value
            if(value.isObject())
            {
                QJsonObject object_data = value.toObject();
                this->cityName=object_data.value("city").toString();
                this->currentwendu=object_data.value("wendu").toString();
                this->ganmao=object_data.value("ganmao").toString();
                if(object_data.contains("forecast"))
                {
                    QJsonValue value = object_data.value("forecast");
                    if(value.isArray())
                    {
                        QJsonObject today_weather = value.toArray().at(0).toObject();
                        weather_type = today_weather.value("type").toString();
                        date = today_weather.value("date").toString();

                        QString low = today_weather.value("low").toString();
                        QString high = today_weather.value("high").toString();
                        wendu = low.mid(low.length()-3,4) +"-"+ high.mid(high.length()-3,4);
                        QString strength = today_weather.value("fengli").toString();
                        strength.remove(0,8);
                        strength.remove(strength.length()-2,2);
                        fengli = today_weather.value("fengxiang").toString() + strength;
//                        ui->type->setText(weather_type); //显示天气类型
//                        ui->wendu->setText(wendu);   //显示温度
//                        ui->fengli->setText(fengli); //显示风力
                        this->isGetData=true;
                    }
                }
            }
        }

    }else
    {
        qDebug()<<"json_recv is NULL or is not a object !!";
    }
    reply->deleteLater(); //销毁请求对象
    if(isGetData)
    {
        qDebug()<<QString::fromLocal8Bit("获取天气成功");
        emit this->getDataSuccessedSignal();
    }
    else
    {
        qDebug()<<QString::fromLocal8Bit("获取天气失败");
        emit this->getDataFailedSignal();
    }
    emit this->getDataFinisedSignal();
}


/*
 * 查询天气
 */
void Weather::queryWeather()
{
//    QString local_city = ui->lineEdit->text().trimmed(); //获得需要查询天气的城市名称
    char quest_array[256]="http://wthrcdn.etouch.cn/weather_mini?city=";
    QNetworkRequest quest;
    sprintf(quest_array,"%s%s",quest_array,cityName.toUtf8().data());
    quest.setUrl(QUrl(quest_array));
    quest.setHeader(QNetworkRequest::UserAgentHeader,"RT-Thread ART");
    /*发送get网络请求*/
    manager->get(quest);
}

//widget.h
#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include "weather.h"

namespace Ui {
class Widget;
}

class Widget : public QWidget
{
    Q_OBJECT

public:
    explicit Widget(QWidget *parent = 0);
    ~Widget();

private slots:
    void getWeatherFailedSlot();

    void on_pushButton_clicked();

    void on_pushButton_2_clicked();

    void on_pushButton_3_clicked();

    void on_pushButton_4_clicked();

private:
    Ui::Widget *ui;
    Weather *weather;
    bool isGetData=false;
};

#endif // WIDGET_H

//widget.cpp
#include "widget.h"
#include "ui_widget.h"
#include <QDebug>
#include <QMessageBox>
Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
    ui->setupUi(this);
    weather=new Weather(QStringLiteral("西安"));
    connect(weather,&Weather::getDataSuccessedSignal,this,&Widget::on_pushButton_clicked);
    connect(weather,SIGNAL(getDataFailedSignal()),this,SLOT(getWeatherFailedSlot()));
}

Widget::~Widget()
{
    delete ui;
}

void Widget::getWeatherFailedSlot()
{
    QMessageBox::warning(this,QString::fromLocal8Bit("获取天气提示"),QString::fromLocal8Bit("获取天气失败，请确认网络是否连接，或城市名的输入"));
}

void Widget::on_pushButton_clicked()
{
        ui->lineEdit_cityName->setText(weather->getCityName());
        ui->lineEdit_date->setText(weather->getDate());
        ui->lineEdit_currentWendu->setText(weather->getCurrentWendu()+QString::fromLocal8Bit("℃"));
        ui->lineEdit_Fengli->setText(weather->getFengLi());
        ui->lineEdit_type->setText(weather->getTianQiType());
        ui->lineEdit_Wendu->setText(weather->getWenDu());
        ui->textBrowser_ganmao->setText(weather->getGanMaoInfo());

        ui->tableWidget->clearContents();
        ui->tableWidget->setRowCount(0);
        QMap<QString,QMap<QString,QString>> map=weather->getDataMap();
        int n=0;
        foreach (QString date, map.keys()) {
            ui->tableWidget->insertRow(ui->tableWidget->rowCount());
            QMap<QString,QString> mapvalue=map.value(date);
            ui->tableWidget->setItem(n,0,new QTableWidgetItem(date));
            ui->tableWidget->setItem(n,1,new QTableWidgetItem(mapvalue.value("type")));
            QString low = mapvalue.value("low");
            QString high = mapvalue.value("high");
            ui->tableWidget->setItem(n,2,new QTableWidgetItem(low.mid(low.length()-3,4) +"-"+ high.mid(high.length()-3,4)));
            QString strength = mapvalue.value("fengli");
            strength.remove(0,8);
            strength.remove(strength.length()-2,2);
            ui->tableWidget->setItem(n,3,new QTableWidgetItem(mapvalue.value("fengxiang") + strength));
            n++;
        }

        qDebug()<<weather->getCityName();
        qDebug()<<QStringLiteral("风力风向")<<weather->getFengLi();
        qDebug()<<QStringLiteral("天气类型")<<weather->getTianQiType();
        qDebug()<<QStringLiteral("温度")<<weather->getWenDu();
//        ui->textBrowser->setText(weather->getAllInfo());
        weather->getDataMap();
}

void Widget::on_pushButton_2_clicked()
{
    weather->refresh();
}

void Widget::on_pushButton_3_clicked()
{
    if(ui->lineEdit->text().isEmpty())
        return;
    weather->setCityName(ui->lineEdit->text());
    weather->refresh();
}

void Widget::on_pushButton_4_clicked()
{
    weather->print_Debug_allinfoMap();
}

//main.cpp
#include "mainwindow.h"
#include "curvewidget.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow mw;
    curvewidget cw;
    mw.show();
    QObject::connect(&mw,SIGNAL(plotButton_clicked()),&cw,SLOT(show()));
    return a.exec();
}

?mainwindow.ui文件

?weather.ui文件

?

?

代码中有一些本地图片可能需要去掉，不然会出错，其他应该可以调通没问题，天气查询代码仿照了其他博主的内容，直接调用了这个窗口，最终实现网络连接查询的效果。

最终效果?

?

项目还属于雏形，有许多需要改进的地方，和大家一起学习进步。?