QT之Tcp传输Json

1.共用的结构体inf.h

#ifndef INF_H

#define INF_H

#include <QColor>

#include <QPoint>

struct MoveInf

{
 

    QPoint srcP;

    QPoint targetP;

    QColor turnSide;

    QColor winSide;

    bool isOver=true;

    QString inf;

    MoveInf(){}

    MoveInf(QPoint srcP,QPoint targetP,QColor turnSide, QColor winSide,bool isOver,QString inf){
 

        this->srcP=srcP;

        this->targetP=targetP;

        this->turnSide=turnSide;

        this->winSide=winSide;

        this->isOver=isOver;

        this->inf=inf;

    }    

};

#endif // INF_H

2.服务器端

2.1服务器端头文件

#ifndef WIDGET_H

#define WIDGET_H

#include <QWidget>

#include<QtNetwork>

#include<QDebug>

#include"inf.h"

namespace Ui {
 

class Widget;

}

class Widget : public QWidget

{
 

    Q_OBJECT

public:

    explicit Widget(QWidget *parent = nullptr);

    ~Widget();

private slots:

    void errorSlot(QAbstractSocket::SocketError);

    void serverReadData();

    void on_btnSend_clicked();

    void hasNewConn();

private:

    Ui::Widget *ui;     

    QTcpServer *tcpServer=NULL;

    QTcpSocket *tcpSocketConn=NULL;

    const int DATATYPE_MOVE_INF=0;

    int port =12366;

    QByteArray outBytes;

    qint64 totalBytesSize=0;

    qint64 receivedBytesSize=0;

    void initServer();

    void serverSendData(MoveInf moveInf, int dataType);

};

#endif // WIDGET_H

2.2服务器端cpp文件

#include "widget.h"

#include "ui_widget.h"

#include <QAbstractSocket>

#include<QDebug>

#include <QJsonDocument>

Widget::Widget(QWidget *parent) :

    QWidget(parent),

    ui(new Ui::Widget)

{
 

    ui->setupUi(this);

    initServer();

}

Widget::~Widget()

{
 

    delete ui;

    if(tcpSocketConn){
 

        tcpSocketConn->close();

        delete tcpSocketConn;

    }

    if(tcpServer){
 

        tcpServer->close(); //因为建在this上，故无需手工delete

    }

}

void Widget::initServer()

{
 

    tcpServer=new QTcpServer(this);