1、pro文件

从这里，我们可以看到，必须要在.pro文件中添加QT += network才可以进行网络编程，否则是访问不到
   
    头文件的。客户端读写相对简单，我们看一下代码头文件：#-------------------------------------------------## Project created by QtCreator 2019-08-25T14:10:09##-------------------------------------------------QT       += core guiQT += networkgreaterThan(QT_MAJOR_VERSION, 4): QT += widgetsTARGET = myFristTEMPLATE = app# The following define makes your compiler emit warnings if you use# any feature of Qt which has been marked as deprecated (the exact warnings# depend on your compiler). Please consult the documentation of the# deprecated API in order to know how to port your code away from it.DEFINES += QT_DEPRECATED_WARNINGS# You can also make your code fail to compile if you use deprecated APIs.# In order to do so, uncomment the following line.# You can also select to disable deprecated APIs only up to a certain version of Qt.#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0CONFIG += c++11SOURCES += \        clientwidget.cpp \        main.cpp \        mainwindow.cppHEADERS += \        clientwidget.h \        mainwindow.hFORMS += \        clientwidget.ui \        mainwindow.ui# Default rules for deployment.qnx: target.path = /tmp/$${TARGET}/binelse: unix:!android: target.path = /opt/$${TARGET}/bin!isEmpty(target.path): INSTALLS += target

2、client.cpp

#include "clientwidget.h"#include "ui_clientwidget.h"#include
   
    #include 
    
     #include 
     
      #include 
      
       #include 
       
        ClientWidget::ClientWidget(QWidget *parent) :    QWidget(parent),    ui(new Ui::ClientWidget){    ui->setupUi(this);    //初始化套接字    //tcpSocket = NULL;    //分配空间，指定父对象    tcpSocket = new QTcpSocket(this);    //建立连接的信号槽    connect(tcpSocket,&QTcpSocket::connected,            [=]()            {                 ui->textEditRead->setText("恭喜，成功连接服务器！");                 ui->textEditguid->setText("成功连接服务器！");            }            );    //连接建立后收到服务器数据的信号槽    connect(tcpSocket,&QTcpSocket::readyRead,            [=]()           {         //获取对方发送的内容            qint16 n =5;        QByteArray array = tcpSocket->readAll();       quint8 buf[64] = {0};//        buf[0]  = array[1];       QString str1 = "Welcome";         // qint64 read(char *data, qint64 maxlen);        if(array[7] == (char)3)        {            ui->textEditRead->append("参数设置为:"); //           str1.sprintf( "year:%d\tmoth:%d\tday:%d", ((quint8)array[20]+(array[19]<<8)),//                    array[22]+(array[21]<<8), array[24]+(array[23]<<8));            str1.sprintf( "年:%d\t月:%d\t日:%d", ((quint8)array[20]+(array[19]<<8)),                    array[22]+(array[21]<<8), array[24]+(array[23]<<8));            ui->textEditRead->append(str1);//            str1.sprintf( "V1:%d\tV2:%d\tspeed3:%d",array[10]+(array[9]<<8),//                   (quint8)array[12]+(array[11]<<8),  array[14]+(array[13]<<8));            str1.sprintf( "消毒桶:%d\t饮水桶:%d\t流速:%d",array[10]+(array[9]<<8),                    (quint8)array[12]+(array[11]<<8),  array[14]+(array[13]<<8));            ui->textEditRead->append(str1);//            str1.sprintf( "dree:%d\tweigt:%d",array[16]+(array[15]<<8),//                    array[18]+(array[17]<<8));            str1.sprintf( "溶解度:%d\t药重:%d",array[16]+(array[15]<<8),                    array[18]+(array[17]<<8));            ui->textEditRead->append(str1);            //sprintf(buf, "year:%d-moth:%d-day:%d", array[7], array[7], array[7]);        }else        {//显示到编辑框        ui->textEditRead->append("Recv:");        ui->textEditRead->append(array);//append，添加内容        }            }            );    //设置窗口标题    setWindowTitle("TCP客户端");}ClientWidget::~ClientWidget(){    delete ui;}void ClientWidget::on_buttonConnect_clicked(){    //获取服务器IP和端口    QString ip = ui->lineEditIP->text();    quint16 port = ui->lineEditPort->text().toUShort();    //主动连接服务器    tcpSocket->connectToHost(QHostAddress(ip),port);}void ClientWidget::on_buttonSend_clicked(){    //获取编辑框内容     QString str = ui->textEditWrite->toPlainText();     //发送数据     tcpSocket->write( str.toUtf8().data() );}void ClientWidget::on_buttonClose_clicked(){ //主动断开连接    tcpSocket->disconnectFromHost();    ui->textEditguid->setText("已断开连接！");}QByteArray InnitialQByteArry(qint8 in[],int len)//输入int数组和数组长度，将数组中的值存入QByteArry中{    QByteArray byteArry;    byteArry.resize(len);    for (int i=0;i
        
         write( str.toUtf8().data() ); qint8 buf[43] = {0x00,0x00,0x00,0x00,0x00,0x06,0x01,0x10,0x00,0x00,0x00,0x10,0x20}; num = ui->lineEditset1->text().toShort(); buf[n+0] = num>>8; buf[n+1] =(qint8) num; num = ui->lineEditset2->text().toShort(); buf[n+2] = num>>8; buf[n+3] =(qint8) num; num = ui->lineEditset3->text().toShort(); buf[n+4] = num>>8; buf[n+5] =(qint8) num; num = ui->lineEditset4->text().toShort(); buf[n+6] = num>>8; buf[n+7] =(qint8) num; num = ui->lineEditset5->text().toShort(); buf[n+8] = num>>8; buf[n+9] =(qint8) num; num = ui->lineEditset6->text().toShort(); buf[n+10] = num>>8; buf[n+11] =(qint8) num; num = ui->lineEditset7->text().toShort(); buf[n+12] = num>>8; buf[n+13] =(qint8) num; num = ui->lineEditset7_2->text().toShort(); buf[n+14] = num>>8; buf[n+15] =(qint8) num; num = ui->lineEditset8->text().toShort(); buf[n+16] = num>>8; buf[n+17] =(qint8) num; num = ui->lineEditset8_2->text().toShort(); buf[n+18] = num>>8; buf[n+19] =(qint8) num; num = ui->lineEditset9->text().toShort(); buf[n+20] = num>>8; buf[n+21] =(qint8) num; num = ui->lineEditset9_2->text().toShort(); buf[n+22] = num>>8; buf[n+23] =(qint8) num; num = ui->lineEditset10->text().toShort(); buf[n+24] = num>>8; buf[n+25] =(qint8) num; num = ui->lineEditset10_2->text().toShort(); buf[n+26] = num>>8; buf[n+27] =(qint8) num; //lineEditset7_2 num = 0; if(ui->checkBox_1->isChecked() ){ qDebug("checkBox_1"); num |= 1; } if(ui->checkBox_2->isChecked() ){ qDebug("checkBox_2"); num |= 1<<1; } if(ui->checkBox_3->isChecked() ){ qDebug("checkBox_3"); num |= 1<<2; } if(ui->checkBox_4->isChecked() ){ qDebug("checkBox_4"); num |= 1<<3; } if(ui->checkBox_5->isChecked() ){ qDebug("checkBox_5"); num |= 1<<4; } if(ui->checkBox_6->isChecked() ){ qDebug("checkBox_6"); num |= 1<<5; }// qDebug()<<"num:";// qDebug()<
         
          >8; buf[n+29] =(qint8) num; int siz =sizeof(buf)/sizeof(buf[0]); QByteArray sendM=InnitialQByteArry(buf,siz); tcpSocket->write( sendM);}void ClientWidget::on_buttonRead_clicked(){ // qint16 addr = ui->lineEditAddr->text().toShort(); /// qint16 num = ui->lineEditNum->text().toShort(); //发送数据 //tcpSocket->write( str.toUtf8().data() ); qint8 buf[12] = {0x00,0x00,0x00,0x00,0x00,0x06,0x01,0x03,0x00,0x00,0x00,0x20}; // buf[8] = addr>>8; // buf[9] =(qint8) addr; // buf[10] = num>>8; // buf[11] =(qint8) num; int siz =sizeof(buf)/sizeof(buf[0]); QByteArray sendM=InnitialQByteArry(buf,siz); tcpSocket->write( sendM); ui->textEditRead->setText("读取设置内容为：");}

3、UI文件


   
    
    
     ClientWidget
     
      
        
          
       
        0
           
       
        0
           
       
        946
           
       
        641
          
        
       
        
          
       
        0
           
       
        300
          
        
       
        
      
       Form
        
       
        
          
            
         
          
          
           450
           
          
           580
           
          
             
         
          
          
           450
           
          
           560
           
          
             
         
         
          数据读写
          
             
         
          
          
           true
           
          
          
           
           
            20
            
           
            30
            
           
            400
            
           
            500
            
           
          
          
           
           
            0
            
           
            0
            
           
          
          
           
           
            400
            
           
            500
            
           
          
          
           
           
            400
            
           
            500
            
           
          
          
           
           
            2
            
           
            0
            
           
          
          
           
           
            微软雅黑
            
           
            50
            
           
            false
             
          
          
          
           数据设置
           
          
          
           
            
            
             30
             
            
             30
             
            
             100
             
            
             30
             
            
           
           
            
            
             100
             
            
             20
             
            
           
           
            
            
             100
             
            
             30
             
            
           
           
            
            
             微软雅黑
             
            
             10
             
            
             50
             
            
             false
              
           
           
           
            消毒桶体积：
            
           
          
          
           
            
            
             130
             
            
             30
             
            
             71
             
            
             21
             
            
           
           
           
            45
            
           
          
          
           
            
            
             210
             
            
             60
             
            
             100
             
            
             30
             
            
           
           
            
            
             100
             
            
             20
             
            
           
           
            
            
             100
             
            
             30
             
            
           
           
            
            
             微软雅黑
             
            
             10
             
            
             50
             
            
             false
              
           
           
           
            药物重量：
            
           
          
          
           
            
            
             130
             
            
             70
             
            
             71
             
            
             21
             
            
           
           
           
            1000
            
           
          
          
           
            
            
             260
             
            
             390
             
            
             93
             
            
             71
             
            
           
           
           
            参数设置
            
           
          
          
           
            
            
             30
             
            
             90
             
            
             100
             
            
             30
             
            
           
           
            
            
             100
             
            
             20
             
            
           
           
            
            
             100
             
            
             30
             
            
           
           
            
            
             微软雅黑
             
            
             10
             
            
             50
             
            
             false
              
           
           
           
            水泵流量：
            
           
          
          
           
            
            
             30
             
            
             60
             
            
             100
             
            
             30
             
            
           
           
            
            
             100
             
            
             20
             
            
           
           
            
            
             100
             
            
             30
             
            
           
           
            
            
             微软雅黑
             
            
             10
             
            
             50
             
            
             false
              
           
           
           
            饮水桶体积：
            
           
          
          
           
            
            
             220
             
            
             30
             
            
             100
             
            
             30
             
            
           
           
            
            
             100
             
            
             20
             
            
           
           
            
            
             100
             
            
             30
             
            
           
           
            
            
             微软雅黑
             
            
             10
             
            
             50
             
            
             false
              
           
           
           
            稀释度：
            
           
          
          
           
            
            
             130
             
            
             100
             
            
             71
             
            
             21
             
            
           
           
           
            5
            
           
          
          
           
            
            
             300
             
            
             30
             
            
             71
             
            
             21
             
            
           
           
           
            2
            
           
          
          
           
            
            
             300
             
            
             70
             
            
             71
             
            
             21
             
            
           
           
           
            10000
            
           
          
          
           
            
            
             30
             
            
             140
             
            
             100
             
            
             30
             
            
           
           
            
            
             100
             
            
             20
             
            
           
           
            
            
             100
             
            
             30
             
            
           
           
            
            
             微软雅黑
             
            
             10
             
            
             50
             
            
             false
              
           
           
           
            加药年月日：
            
           
          
          
           
            
            
             130
             
            
             150
             
            
             51
             
            
             21
             
            
           
           
           
            2019
            
           
          
          
           
            
            
             190
             
            
             150
             
            
             51
             
            
             21
             
            
           
           
           
            8
            
           
          
          
           
            
            
             30
             
            
             210
             
            
             100
             
            
             30
             
            
           
           
            
            
             100
             
            
             20
             
            
           
           
            
            
             100
             
            
             30
             
            
           
           
            
            
             微软雅黑
             
            
             10
             
            
             50
             
            
             false
              
           
           
           
            限制时间1止：
            
           
          
          
           
            
            
             140
             
            
             220
             
            
             51
             
            
             21
             
            
           
           
           
            12
            
           
          
          
           
            
            
             140
             
            
             190
             
            
             51
             
            
             21
             
            
           
           
           
            9
            
           
          
          
           
            
            
             30
             
            
             180
             
            
             100
             
            
             30
             
            
           
           
            
            
             100
             
            
             20
             
            
           
           
            
            
             100
             
            
             30
             
            
           
           
            
            
             微软雅黑
             
            
             10
             
            
             50
             
            
             false
              
           
           
           
            限制时间1起：
            
           
          
          
           
            
            
             140
             
            
             250
             
            
             51
             
            
             21
             
            
           
           
           
            14
            
           
          
          
           
            
            
             30
             
            
             240
             
            
             100
             
            
             30
             
            
           
           
            
            
             100
             
            
             20
             
            
           
           
            
            
             100
             
            
             30
             
            
           
           
            
            
             微软雅黑
             
            
             10
             
            
             50
             
            
             false
              
           
           
           
            限制时间2起：
            
           
          
          
           
            
            
             250
             
            
             150
             
            
             51
             
            
             21
             
            
           
           
           
            26
            
           
          
          
           
            
            
             200
             
            
             190
             
            
             51
             
            
             21
             
            
           
           
           
            00
            
           
          
          
           
            
            
             200
             
            
             220
             
            
             51
             
            
             21
             
            
           
           
           
            30
            
           
          
          
           
            
            
             200
             
            
             250
             
            
             51
             
            
             21
             
            
           
           
           
            30
            
           
          
          
           
            
            
             30
             
            
             320
             
            
             91
             
            
             19
             
            
           
           
            
            
             微软雅黑
             
            
             10
             
            
             50
             
            
             false
              
           
           
           
            1单元
            
           
          
          
           
            
            
             30
             
            
             350
             
            
             91
             
            
             19
             
            
           
           
            
            
             微软雅黑
             
            
             10
             
            
             50
             
            
             false
              
           
           
           
            2单元
            
           
          
          
           
            
            
             30
             
            
             380
             
            
             91
             
            
             19
             
            
           
           
            
            
             微软雅黑
             
            
             10
             
            
             50
             
            
             false
              
           
           
           
            3单元
            
           
          
          
           
            
            
             30
             
            
             410
             
            
             91
             
            
             19
             
            
           
           
            
            
             微软雅黑
             
            
             10
             
            
             50
             
            
             false
              
           
           
           
            4单元
            
           
          
          
           
            
            
             30
             
            
             440
             
            
             91
             
            
             19
             
            
           
           
            
            
             微软雅黑
             
            
             10
             
            
             50
             
            
             false
              
           
           
           
            5单元
            
           
          
          
           
            
            
             30
             
            
             470
             
            
             91
             
            
             19
             
            
           
           
            
            
             微软雅黑
             
            
             10
             
            
             50
             
            
             false
              
           
           
           
            6单元
            
           
          
          
           
            
            
             20
             
            
             280
             
            
             120
             
            
             30
             
            
           
           
            
            
             120
             
            
             20
             
            
           
           
            
            
             100
             
            
             30
             
            
           
           
            
            
             微软雅黑
             
            
             10
             
            
             50
             
            
             false
              
           
           
           
            喂药单元选择：
            
           
          
            
          
         
          
            
         
          
          
           300
           
          
           560
           
          
             
         
         
          连接
          
             
         
          
           
           
            20
            
           
            250
            
           
            430
            
           
            300
            
           
          
          
           
           
            430
            
           
            300
            
           
          
          
           
           
            430
            
           
            300
            
           
          
          
          
           数据显示
           
          
          
           
            
            
             20
             
            
             20
             
            
             331
             
            
             200
             
            
           
           
            
            
             16777215
             
            
             200
             
            
           
           
           
            true
            
           
          
          
           
            
            
             20
             
            
             230
             
            
             331
             
            
             51
             
            
           
           
            
            
             16777215
             
            
             100
             
            
           
          
          
           
            
            
             360
             
            
             230
             
            
             71
             
            
             51
             
            
           
           
           
            发送数据
            
           
          
          
           
            
            
             360
             
            
             20
             
            
             71
             
            
             51
             
            
           
           
           
            读取参数
            
           
          
             
         
          
           
           
            20
            
           
            20
            
           
            421
            
           
            200
            
           
          
          
           
           
            400
            
           
            200
            
           
          
          
           
           
            16777215
            
           
            200
            
           
          
          
          
           连接
           
          
          
           
            
            
             210
             
            
             40
             
            
             93
             
            
             28
             
            
           
           
           
            连接服务器
            
           
          
          
           
            
            
             20
             
            
             30
             
            
             100
             
            
             30
             
            
           
           
            
            
             100
             
            
             20
             
            
           
           
            
            
             100
             
            
             30
             
            
           
           
           
            服务器端口：
            
           
          
          
           
            
            
             120
             
            
             40
             
            
             71
             
            
             21
             
            
           
           
           
            502
            
           
          
          
           
            
            
             20
             
            
             80
             
            
             93
             
            
             21
             
            
           
           
           
            服务器IP：
            
           
          
          
           
            
            
             110
             
            
             80
             
            
             254
             
            
             31
             
            
           
           
           
            192.168.0.200
            
           
          
          
           
            
            
             20
             
            
             120
             
            
             100
             
            
             30
             
            
           
           
            
            
             100
             
            
             20
             
            
           
           
            
            
             100
             
            
             30
             
            
           
           
           
            连接状态：
            
           
          
          
           
            
            
             110
             
            
             120
             
            
             201
             
            
             31
             
            
           
           
           
            <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN" "http://www.w3.org/TR/REC-html40/strict.dtd"><html><head><meta name="qrichtext" content="1" /><style type="text/css">p, li { white-space: pre-wrap; }</style></head><body style=" font-family:'SimSun'; font-size:9pt; font-weight:400; font-style:normal;"><p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">未连接</p></body></html>
            
           
          
          
           
            
            
             310
             
            
             40
             
            
             93
             
            
             28
             
            
           
           
           
            关闭连接