Client類

////////////////////////////////////////////////////////////////////
#ifndef CLIENT_H
#define CLIENT_H

#include <QDialog>
#include <QAbstractSocket>
#include "mythread.h"

class QTcpSocket;

namespace Ui {
class Client;
}

class Client : public QDialog
{
    Q_OBJECT

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

private:
    Ui::Client *ui;
    QTcpSocket *tcpSocket;
    QString message;
    QStringList messageList;

    bool
 
 if_button_down = 1;
    MyThread thread;

private slots:
    void newConnect();
    void disConnect();
    void readMessage();//讀取伺服器資料
    void displayError(QAbstractSocket::SocketError);

    void updata();//更新並顯示

    void on_connectButton_clicked();
    void on_saveButton_clicked();
    void on_receiveText_textChanged();
    void
 
 on_clearButton_clicked();
};

#endif // CLIENT_H
/////////////////////////////////////////////////////////////////////////////

#include "client.h"
#include "ui_client.h"

#include <QtNetwork>

#include <QTimer>
#include <qdatetime.h>

#include<QMessageBox>


Client::Client(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::Client)
{
    ui->setupUi(this
 
);

    tcpSocket = new QTcpSocket(this);
    connect(tcpSocket, &QTcpSocket::readyRead, this, &Client::readMessage);
    connect(tcpSocket, SIGNAL(error(QAbstractSocket::SocketError)),
            this, SLOT(displayError(QAbstractSocket::SocketError)));


//    connect(this->tcpSocket,SIGNAL(connected()),this,SLOT(haveConnected()));
//    connect(this->tcpSocket,SIGNAL(disconnected()),this,SLOT(disConnect()));
//    connect(ui->connectButton,SIGNAL(clicked(bool)),this,SLOT(to_disConnect()));
}

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

void Client::newConnect()
{
    //QMessageBox::about(this,"提示","連線成功");
    tcpSocket->connectToHost(ui->hostLineEdit->text(),ui->portLineEdit->text().toInt());
    ui->connectButton->setText("斷開");
}

void Client::disConnect()
{
    //QMessageBox::about(this,"提示","斷開連線");
    tcpSocket->abort(); // 取消已有的連線
    ui->connectButton->setText("連線到伺服器");
}



void Client::updata()
{
    // 顯示接收到的資料
    messageList = message.split(" ");
    ui->receiveText->append(message);
    qDebug() << QString("message receive");
    ui->text1->setText(messageList.at(1));
    ui->text2->setText(messageList.at(2));
    ui->text3->setText(messageList.at(3));
    ui->text4->setText(messageList.at(4));
    ui->text5->setText(messageList.at(5));
    ui->text6->setText(messageList.at(6));
    //ui->text7->setText(QString(thread.timer.timetoString));
    ui->text7->setText(messageList.at(7));
    ui->text8->setText(messageList.at(8));
}


void Client::readMessage()
{
    message = tcpSocket->readAll();//接收字串資料
    updata();
}

void Client::displayError(QAbstractSocket::SocketError)
{
    qDebug() << tcpSocket->errorString();
    QMessageBox::about(this,"提示",tcpSocket->errorString());

}

void Client::on_connectButton_clicked()
{
    if(if_button_down)//連線
    {
        newConnect();
        //thread.start();
        if_button_down = false;
    }
    else//斷開
    {
        disConnect();
        //thread.stop();
        if_button_down = true;
    }
}

void Client::on_clearButton_clicked()
{
    ui->receiveText->clear();
}

void Client::on_receiveText_textChanged()
{
    //ui->receiveText->moveCursor(QTextCursor::End);
}

void Client::on_saveButton_clicked()
{
    QFile myfile("./mydat.txt");
    QString text = ui->receiveText->toPlainText();
    myfile.open(QIODevice::WriteOnly |QIODevice::Text | QIODevice::Append);
    myfile.write("\r\n**************我是分隔符**************\r\n");
    myfile.write(text.toStdString().c_str());

    myfile.close();

    QMessageBox::about(this,"儲存成功","已儲存到的當前路徑mydat.txt");
}

MyThread 類（被遮蔽，Client類中可呼叫顯示時間）

/////////////////////////////////////////////////////////////////////////////////////////
#ifndef MYTHREAD_H
#define MYTHREAD_H

#include "ui_client.h"
#include <QThread>
#include "mytimer.h"

namespace Ui {
class MyThread;
}


class MyThread : public QThread
{
    Q_OBJECT
public:
    explicit MyThread(QObject *parent = 0);
    void stop();
    void timeui(Ui::Client *dis);
    MyTimer timer;
protected:
    void run();
private:
    volatile bool stopped;
};

#endif // MYTHREAD_H
///////////////////////////////////////////////////////////////////////


#include "mythread.h"
#include "ui_client.h"
#include <QDebug>

#include <QTimer>
#include <qdatetime.h>

MyThread::MyThread(QObject *parent) :
    QThread(parent)
{
    stopped = false;
}

void MyThread::run()
{
    while (!stopped)
    {
        timer.gettimer();
        msleep(1000);
    }
    stopped = false;
}

void MyThread::timeui(Ui::Client *mainui)
{
    mainui->receiveText->setText(QString(timer.timetoString));
}



void MyThread::stop()
{
    stopped = true;
}
///////////////////////////////////////////////////////////////////////////////

MyTimer類

#ifndef MYTIMER_H
#define MYTIMER_H

#include <QTimer>
#include <qdatetime.h>

class MyTimer : public QTimer
{
public:
    MyTimer();
    void gettimer();
    QString timetoString;
};



//namespace Ui {
//class MyThread;
//}


//class MyThread : public QThread
//{
//    Q_OBJECT
//public:
//    explicit MyThread(QObject *parent = 0);
//    void stop();
//    QString gettime();
//protected:
//    void run();
//private:
//    volatile bool stopped;
//};

#endif // MYTIMER_H
///////////////////////////////////////////////////////////////////////////////////
MyTimer::MyTimer()
{

}

void MyTimer::gettimer()
{
    QDateTime time = QDateTime::currentDateTime();
    timetoString = time.toString("yyyy-MM-dd hh:mm:ss");//yyyy-MM-dd hh:mm:ss dddd
    qDebug() << QString(timetoString);
}

UI介面個名稱看程式自己設定 ，原始碼請訪問