Qt将数据转化为json格式

落日映苍穹つ 2024-04-17 17:28 34阅读 0赞

# 1.运行截图 #

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d6ejk1MzIwMDQ2Mw_size_16_color_FFFFFF_t_70][]

# 2.源码  #

//.h
    #ifndef WIDGET_H
    #define WIDGET_H
    
    #include <QWidget>
    #include <QList>
    
    namespace Ui {
    class Widget;
    }
    
    struct EnjoyFruits
    {
        QString FruitName;
        QString FruitColor;
    };
    
    struct Student
    {
        QString name;
        int age;
        QString city;
        QList<EnjoyFruits> fruits;
    };
    
    class Widget : public QWidget
    {
        Q_OBJECT
    
    public:
        explicit Widget(QWidget *parent = 0);
        ~Widget();
    
    public slots:
        void onToJsonBtnClicked();
        void onToTextBtnClicked();
    
    public:
        void writeEdit(QString name,QString value);
    
    
    private:
        Ui::Widget *ui;
    
        Student student;
    };
    
    #endif // WIDGET_H
    
    // .cpp
    #include "widget.h"
    #include "ui_widget.h"
    #include <QJsonObject>
    #include <QJsonArray>
    #include <QJsonDocument>
    
    Widget::Widget(QWidget *parent) :
        QWidget(parent),
        ui(new Ui::Widget)
    {
        ui->setupUi(this);
        connect(ui->toJsonBtn,&QPushButton::clicked,this,&Widget::onToJsonBtnClicked);
        connect(ui->toTextBtn,&QPushButton::clicked,this,&Widget::onToTextBtnClicked);
    
        student.name = "小米";
        writeEdit("name","小米");
    
        student.age = 18;
        writeEdit("age","18");
    
        student.city = "北京";
        writeEdit("city","北京");
    
        QList<EnjoyFruits> lstFruit;
        EnjoyFruits f1;
    
        f1.FruitName = "香蕉";
        writeEdit("FruitName","香蕉");
        f1.FruitColor = "黄色";
        writeEdit("FruitColor","黄色");
    
        lstFruit.append(f1);
    
        f1.FruitName = "草莓";
        writeEdit("FruitName","草莓");
        f1.FruitColor = "红色";
        writeEdit("FruitColor","红色");
    
        lstFruit.append(f1);
    
        student.fruits.append(lstFruit);
    
    }
    
    Widget::~Widget()
    {
        delete ui;
    }
    
    void Widget::onToJsonBtnClicked()
    {
        QJsonObject rootObj;
        QJsonArray rootFruitList;
        rootObj.insert("name", student.name);
        rootObj.insert("age", student.age);
        rootObj.insert("city",student.city);
    
        QList<EnjoyFruits> lst = student.fruits;
        for(int i = 0;i<lst.size();i++)
        {
            QJsonObject objFruit;
            objFruit.insert("fruitName", lst[i].FruitName);
            objFruit.insert("fruitColor", lst[i].FruitColor);
            rootFruitList.append(objFruit);
        }
        rootObj["enjoyFruit"] = rootFruitList;
    
        QJsonDocument document;
        document.setObject(rootObj);
        QByteArray byteArray = document.toJson(QJsonDocument::Compact);
        QString strJson(byteArray);
    
        ui->textEditRight->setText(strJson);
    }
    
    
    void Widget::writeEdit(QString name, QString value)
    {
        QString str = QString("%1 = %2 \n").arg(name).arg(value);
        ui->textEditLeft->append(str);
    }

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d6ejk1MzIwMDQ2Mw_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20190829121903365.PNG?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d6ejk1MzIwMDQ2Mw==,size_16,color_FFFFFF,t_70